Merge branch 'main' into recent-search

app/build.gradle

@@ -47,18 +47,19 @@ dependencies {
 
     implementation 'com.jakewharton.timber:timber:4.7.1'
     implementation 'com.github.deano2390:MaterialShowcaseView:1.2.0'
-    implementation "com.google.android.material:material:1.9.0"
+    implementation "com.google.android.material:material:1.12.0"
     implementation 'com.karumi:dexter:5.0.0'
     implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0'
 
     // Jetpack Compose
-    def composeBom = platform('androidx.compose:compose-bom:2024.08.00')
+    def composeBom = platform('androidx.compose:compose-bom:2024.11.00')
 
-    implementation "androidx.activity:activity-compose:1.9.1"
+    implementation "androidx.activity:activity-compose:1.9.3"
     implementation "androidx.lifecycle:lifecycle-runtime-ktx:2.8.4"
     implementation (composeBom)
     implementation "androidx.compose.runtime:runtime"
     implementation "androidx.compose.ui:ui"
+    implementation "androidx.compose.ui:ui-viewbinding"
     implementation "androidx.compose.ui:ui-graphics"
     implementation "androidx.compose.ui:ui-tooling"
     implementation "androidx.compose.foundation:foundation"
@@ -138,7 +139,7 @@ dependencies {
     implementation "androidx.browser:browser:1.3.0"
     implementation "androidx.cardview:cardview:1.0.0"
     implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
-    implementation "androidx.exifinterface:exifinterface:1.3.2"
+    implementation 'androidx.exifinterface:exifinterface:1.3.7'
     implementation "androidx.core:core-ktx:$CORE_KTX_VERSION"
     implementation 'com.simplecityapps:recyclerview-fastscroll:2.0.1'
 
@@ -313,6 +314,7 @@ android {
             buildConfigField "String", "SIGNUP_SUCCESS_REDIRECTION_URL", "\"https://commons.m.wikimedia.org/w/index.php?title=Main_Page&welcome=yes\""
             buildConfigField "String", "FORGOT_PASSWORD_URL", "\"https://commons.wikimedia.org/wiki/Special:PasswordReset\""
             buildConfigField "String", "PRIVACY_POLICY_URL", "\"https://github.com/commons-app/commons-app-documentation/blob/master/android/Privacy-policy.md\""
+            buildConfigField "String", "FILE_USAGES_BASE_URL", "\"https://commons.wikimedia.org/w/api.php?action=query&format=json&formatversion=2\""
             buildConfigField "String", "ACCOUNT_TYPE", "\"fr.free.nrw.commons\""
             buildConfigField "String", "CONTRIBUTION_AUTHORITY", "\"fr.free.nrw.commons.contributions.contentprovider\""
             buildConfigField "String", "MODIFICATION_AUTHORITY", "\"fr.free.nrw.commons.modifications.contentprovider\""
@@ -348,6 +350,7 @@ android {
             buildConfigField "String", "SIGNUP_SUCCESS_REDIRECTION_URL", "\"https://commons.m.wikimedia.beta.wmflabs.org/w/index.php?title=Main_Page&welcome=yes\""
             buildConfigField "String", "FORGOT_PASSWORD_URL", "\"https://commons.wikimedia.beta.wmflabs.org/wiki/Special:PasswordReset\""
             buildConfigField "String", "PRIVACY_POLICY_URL", "\"https://github.com/commons-app/commons-app-documentation/blob/master/android/Privacy-policy.md\""
+            buildConfigField "String", "FILE_USAGES_BASE_URL", "\"https://commons.wikimedia.org/w/api.php?action=query&format=json&formatversion=2\""
             buildConfigField "String", "ACCOUNT_TYPE", "\"fr.free.nrw.commons.beta\""
             buildConfigField "String", "CONTRIBUTION_AUTHORITY", "\"fr.free.nrw.commons.beta.contributions.contentprovider\""
             buildConfigField "String", "MODIFICATION_AUTHORITY", "\"fr.free.nrw.commons.beta.modifications.contentprovider\""

app/src/androidTest/java/fr/free/nrw/commons/AboutActivityTest.kt

@@ -105,7 +105,7 @@ class AboutActivityTest {
     fun testLaunchTranslate() {
         Espresso.onView(ViewMatchers.withId(R.id.about_translate)).perform(ViewActions.click())
         Espresso.onView(ViewMatchers.withId(android.R.id.button1)).perform(ViewActions.click())
-        val langCode = CommonsApplication.instance.languageLookUpTable!!.codes[0]
+        val langCode = CommonsApplication.instance.languageLookUpTable!!.getCodes()[0]
         Intents.intended(
             CoreMatchers.allOf(
                 IntentMatchers.hasAction(Intent.ACTION_VIEW),

app/src/main/java/fr/free/nrw/commons/auth/login/LoginClient.kt

@@ -237,7 +237,7 @@ class LoginClient(
         .subscribe({ response: MwQueryResponse? ->
             loginResult.userId = response?.query()?.userInfo()?.id() ?: 0
             loginResult.groups =
-                response?.query()?.getUserResponse(userName)?.groups ?: emptySet()
+                response?.query()?.getUserResponse(userName)?.getGroups() ?: emptySet()
             cb.success(loginResult)
         }, { caught: Throwable ->
             Timber.e(caught, "Login succeeded but getting group information failed. ")

app/src/main/java/fr/free/nrw/commons/campaigns/CampaignsPresenter.kt

@@ -52,12 +52,12 @@ class CampaignsPresenter @Inject constructor(
                 return
             }
 
-            okHttpJsonApiClient.campaigns
+            okHttpJsonApiClient.getCampaigns()
                 .observeOn(mainThreadScheduler)
                 .subscribeOn(ioScheduler)
                 .doOnSubscribe { disposable = it }
                 .subscribe({ campaignResponseDTO ->
-                    val campaigns = campaignResponseDTO.campaigns?.toMutableList()
+                    val campaigns = campaignResponseDTO?.campaigns?.toMutableList()
                     if (campaigns.isNullOrEmpty()) {
                         Timber.e("The campaigns list is empty")
                         view!!.showCampaigns(null)

app/src/main/java/fr/free/nrw/commons/di/NetworkingModule.kt

@@ -44,7 +44,6 @@ import okhttp3.logging.HttpLoggingInterceptor
 import okhttp3.logging.HttpLoggingInterceptor.Level
 import timber.log.Timber
 import java.io.File
-import java.util.Locale
 import java.util.concurrent.TimeUnit
 import javax.inject.Named
 import javax.inject.Singleton
@@ -170,14 +169,13 @@ class NetworkingModule {
     @Named(NAMED_WIKI_DATA_WIKI_SITE)
     fun provideWikidataWikiSite(): WikiSite = WikiSite(BuildConfig.WIKIDATA_URL)
 
-
     /**
      * Gson objects are very heavy. The app should ideally be using just one instance of it instead of creating new instances everywhere.
      * @return returns a singleton Gson instance
      */
     @Provides
     @Singleton
-    fun provideGson(): Gson = GsonUtil.getDefaultGson()
+    fun provideGson(): Gson = GsonUtil.defaultGson
 
     @Provides
     @Singleton
@@ -294,9 +292,8 @@ class NetworkingModule {
     @Provides
     @Singleton
     @Named(NAMED_LANGUAGE_WIKI_PEDIA_WIKI_SITE)
-    fun provideLanguageWikipediaSite(): WikiSite {
+    fun provideLanguageWikipediaSite(): WikiSite =
-        return WikiSite.forLanguageCode(Locale.getDefault().language)
+        WikiSite.forDefaultLocaleLanguageCode()
-    }
 
     companion object {
         private const val WIKIDATA_SPARQL_QUERY_URL = "https://query.wikidata.org/sparql"

app/src/main/java/fr/free/nrw/commons/edit/EditActivity.kt

@@ -6,9 +6,7 @@ import android.animation.ValueAnimator
 import android.content.Intent
 import android.graphics.BitmapFactory
 import android.graphics.Matrix
-import android.media.ExifInterface
 import android.os.Bundle
-import android.util.Log
 import android.view.animation.AccelerateDecelerateInterpolator
 import android.widget.ImageView
 import android.widget.Toast
@@ -16,10 +14,12 @@ import androidx.appcompat.app.AppCompatActivity
 import androidx.core.graphics.rotationMatrix
 import androidx.core.graphics.scaleMatrix
 import androidx.core.net.toUri
+import androidx.exifinterface.media.ExifInterface
 import androidx.lifecycle.ViewModelProvider
 import fr.free.nrw.commons.databinding.ActivityEditBinding
 import timber.log.Timber
 import java.io.File
+import kotlin.math.ceil
 
 /**
  * An activity class for editing and rotating images using LLJTran with EXIF attribute preservation.
@@ -42,11 +42,12 @@ class EditActivity : AppCompatActivity() {
         supportActionBar?.title = ""
         val intent = intent
         imageUri = intent.getStringExtra("image") ?: ""
-        vm = ViewModelProvider(this).get(EditViewModel::class.java)
+        vm = ViewModelProvider(this)[EditViewModel::class.java]
         val sourceExif = imageUri.toUri().path?.let { ExifInterface(it) }
+
         val exifTags =
             arrayOf(
-                ExifInterface.TAG_APERTURE,
+                ExifInterface.TAG_F_NUMBER,
                 ExifInterface.TAG_DATETIME,
                 ExifInterface.TAG_EXPOSURE_TIME,
                 ExifInterface.TAG_FLASH,
@@ -62,13 +63,13 @@ class EditActivity : AppCompatActivity() {
                 ExifInterface.TAG_GPS_TIMESTAMP,
                 ExifInterface.TAG_IMAGE_LENGTH,
                 ExifInterface.TAG_IMAGE_WIDTH,
-                ExifInterface.TAG_ISO,
+                ExifInterface.TAG_PHOTOGRAPHIC_SENSITIVITY,
                 ExifInterface.TAG_MAKE,
                 ExifInterface.TAG_MODEL,
                 ExifInterface.TAG_ORIENTATION,
                 ExifInterface.TAG_WHITE_BALANCE,
-                ExifInterface.WHITEBALANCE_AUTO,
+                ExifInterface.WHITE_BALANCE_AUTO,
-                ExifInterface.WHITEBALANCE_MANUAL,
+                ExifInterface.WHITE_BALANCE_MANUAL,
             )
         for (tag in exifTags) {
             val attribute = sourceExif?.getAttribute(tag.toString())
@@ -88,8 +89,7 @@ class EditActivity : AppCompatActivity() {
     private fun init() {
         binding.iv.adjustViewBounds = true
         binding.iv.scaleType = ImageView.ScaleType.MATRIX
-        binding.iv.post(
+        binding.iv.post {
-            Runnable {
             val options = BitmapFactory.Options()
             options.inJustDecodeBounds = true
             BitmapFactory.decodeFile(imageUri, options)
@@ -118,8 +118,7 @@ class EditActivity : AppCompatActivity() {
                 binding.iv.layoutParams.height = (scale * bitmapHeight).toInt()
                 binding.iv.imageMatrix = scaleMatrix(scale, scale)
             }
-            },
+        }
-        )
         binding.rotateBtn.setOnClickListener {
             animateImageHeight()
         }
@@ -143,15 +142,15 @@ class EditActivity : AppCompatActivity() {
         val drawableWidth: Float =
             binding.iv
                 .getDrawable()
-                .getIntrinsicWidth()
+                .intrinsicWidth
                 .toFloat()
         val drawableHeight: Float =
             binding.iv
                 .getDrawable()
-                .getIntrinsicHeight()
+                .intrinsicHeight
                 .toFloat()
-        val viewWidth: Float = binding.iv.getMeasuredWidth().toFloat()
+        val viewWidth: Float = binding.iv.measuredWidth.toFloat()
-        val viewHeight: Float = binding.iv.getMeasuredHeight().toFloat()
+        val viewHeight: Float = binding.iv.measuredHeight.toFloat()
         val rotation = imageRotation % 360
         val newRotation = rotation + 90
 
@@ -162,16 +161,23 @@ class EditActivity : AppCompatActivity() {
         Timber.d("Rotation $rotation")
         Timber.d("new Rotation $newRotation")
 
-        if (rotation == 0 || rotation == 180) {
+        when (rotation) {
+            0, 180 -> {
                 imageScale = viewWidth / drawableWidth
                 newImageScale = viewWidth / drawableHeight
                 newViewHeight = (drawableWidth * newImageScale).toInt()
-        } else if (rotation == 90 || rotation == 270) {
+            }
+            90, 270 -> {
                 imageScale = viewWidth / drawableHeight
                 newImageScale = viewWidth / drawableWidth
                 newViewHeight = (drawableHeight * newImageScale).toInt()
-        } else {
+            }
-            throw UnsupportedOperationException("rotation can 0, 90, 180 or 270. \${rotation} is unsupported")
+            else -> {
+                throw
+                UnsupportedOperationException(
+                    "rotation can 0, 90, 180 or 270. \${rotation} is unsupported"
+                )
+            }
         }
 
         val animator = ValueAnimator.ofFloat(0f, 1f).setDuration(1000L)
@@ -204,7 +210,7 @@ class EditActivity : AppCompatActivity() {
                 (complementaryAnimVal * viewHeight + animVal * newViewHeight).toInt()
             val animatedScale = complementaryAnimVal * imageScale + animVal * newImageScale
             val animatedRotation = complementaryAnimVal * rotation + animVal * newRotation
-            binding.iv.getLayoutParams().height = animatedHeight
+            binding.iv.layoutParams.height = animatedHeight
             val matrix: Matrix =
                 rotationMatrix(
                     animatedRotation,
@@ -218,8 +224,8 @@ class EditActivity : AppCompatActivity() {
                 drawableHeight / 2,
             )
             matrix.postTranslate(
-                -(drawableWidth - binding.iv.getMeasuredWidth()) / 2,
+                -(drawableWidth - binding.iv.measuredWidth) / 2,
-                -(drawableHeight - binding.iv.getMeasuredHeight()) / 2,
+                -(drawableHeight - binding.iv.measuredHeight) / 2,
             )
             binding.iv.setImageMatrix(matrix)
             binding.iv.requestLayout()
@@ -267,9 +273,9 @@ class EditActivity : AppCompatActivity() {
      */
     private fun copyExifData(editedImageExif: ExifInterface?) {
         for (attr in sourceExifAttributeList) {
-            Log.d("Tag is  ${attr.first}", "Value is ${attr.second}")
+            Timber.d("Value is ${attr.second}")
             editedImageExif!!.setAttribute(attr.first, attr.second)
-            Log.d("Tag is ${attr.first}", "Value is ${attr.second}")
+            Timber.d("Value is ${attr.second}")
         }
 
         editedImageExif?.saveAttributes()
@@ -298,9 +304,10 @@ class EditActivity : AppCompatActivity() {
         var scaleFactor = 1
 
         if (originalWidth > maxSize || originalHeight > maxSize) {
-            // Calculate the largest power of 2 that is less than or equal to the desired width and height
+            // Calculate the largest power of 2 that is less than or equal to the desired
-            val widthRatio = Math.ceil((originalWidth.toDouble() / maxSize.toDouble())).toInt()
+            // width and height
-            val heightRatio = Math.ceil((originalHeight.toDouble() / maxSize.toDouble())).toInt()
+            val widthRatio = ceil((originalWidth.toDouble() / maxSize.toDouble())).toInt()
+            val heightRatio = ceil((originalHeight.toDouble() / maxSize.toDouble())).toInt()
 
             scaleFactor = if (widthRatio > heightRatio) widthRatio else heightRatio
         }

app/src/main/java/fr/free/nrw/commons/explore/media/MediaConverter.kt

@@ -11,7 +11,6 @@ import fr.free.nrw.commons.wikidata.model.Entities
 import fr.free.nrw.commons.wikidata.model.gallery.ExtMetadata
 import fr.free.nrw.commons.wikidata.model.gallery.ImageInfo
 import fr.free.nrw.commons.wikidata.mwapi.MwQueryPage
-import org.apache.commons.lang3.StringUtils
 import java.text.ParseException
 import java.util.Date
 import javax.inject.Inject
@@ -24,7 +23,7 @@ class MediaConverter
             entity: Entities.Entity,
             imageInfo: ImageInfo,
         ): Media {
-            val metadata = imageInfo.metadata
+            val metadata = imageInfo.getMetadata()
             requireNotNull(metadata) { "No metadata" }
             // Stores mapping of title attribute to hidden attribute of each category
             val myMap = mutableMapOf<String, Boolean>()
@@ -32,8 +31,8 @@ class MediaConverter
 
             return Media(
                 page.pageId().toString(),
-                imageInfo.thumbUrl.takeIf { it.isNotBlank() } ?: imageInfo.originalUrl,
+                imageInfo.getThumbUrl().takeIf { it.isNotBlank() } ?: imageInfo.getOriginalUrl(),
-                imageInfo.originalUrl,
+                imageInfo.getOriginalUrl(),
                 page.title(),
                 metadata.imageDescription(),
                 safeParseDate(metadata.dateTime()),
@@ -41,7 +40,7 @@ class MediaConverter
                 metadata.prefixedLicenseUrl,
                 getAuthor(metadata),
                 getAuthor(metadata),
-                MediaDataExtractorUtil.extractCategoriesFromList(metadata.categories),
+                MediaDataExtractorUtil.extractCategoriesFromList(metadata.categories()),
                 metadata.latLng,
                 entity.labels().mapValues { it.value.value() },
                 entity.descriptions().mapValues { it.value.value() },
@@ -104,9 +103,5 @@ private val ExtMetadata.prefixedLicenseUrl: String
         }
 
 private val ExtMetadata.latLng: LatLng?
-    get() =
+    get() = LatLng.latLongOrNull(gpsLatitude(), gpsLongitude())
-        if (!StringUtils.isBlank(gpsLatitude) && !StringUtils.isBlank(gpsLongitude)) {
+
-            LatLng(gpsLatitude.toDouble(), gpsLongitude.toDouble(), 0.0f)
-        } else {
-            null
-        }

app/src/main/java/fr/free/nrw/commons/feedback/FeedbackContentCreator.java

@@ -1,120 +0,0 @@
-package fr.free.nrw.commons.feedback;
-
-import android.content.Context;
-import fr.free.nrw.commons.R;
-import fr.free.nrw.commons.auth.AccountUtilKt;
-import fr.free.nrw.commons.feedback.model.Feedback;
-import fr.free.nrw.commons.utils.LangCodeUtils;
-import java.util.Locale;
-import java.text.SimpleDateFormat;
-import java.util.Date;
-import java.util.TimeZone;
-
-/**
- * Creates a wikimedia recognizable format
- * from feedback information
- */
-public class FeedbackContentCreator {
-    private StringBuilder sectionTextBuilder;
-    private StringBuilder sectionTitleBuilder;
-    private Feedback feedback;
-    private Context context;
-
-    public FeedbackContentCreator(Context context, Feedback feedback) {
-        this.feedback = feedback;
-        this.context = context;
-        init();
-    }
-
-    /**
-     * Initializes the string buffer object to append content from feedback object
-     */
-    public void init() {
-        // Localization is not needed here, because this ends up on a page where developers read the feedback, so English is the most convenient.
-
-        /*
-         * Construct the feedback section title
-         */
-
-        //Get the UTC Date and Time and add it to the Title
-        final SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.ENGLISH);
-        dateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
-        final String UTC_FormattedDate = dateFormat.format(new Date());
-
-        sectionTitleBuilder = new StringBuilder();
-        sectionTitleBuilder.append("Feedback from  ");
-        sectionTitleBuilder.append(AccountUtilKt.getUserName(context));
-        sectionTitleBuilder.append(" for version ");
-        sectionTitleBuilder.append(feedback.getVersion());
-        sectionTitleBuilder.append(" on ");
-        sectionTitleBuilder.append(UTC_FormattedDate);
-
-        /*
-         * Construct the feedback section text
-         */
-        sectionTextBuilder = new StringBuilder();
-        sectionTextBuilder.append("\n");
-        sectionTextBuilder.append(feedback.getTitle());
-        sectionTextBuilder.append("\n");
-        sectionTextBuilder.append("\n");
-        if (feedback.getApiLevel() != null) {
-            sectionTextBuilder.append("* ");
-            sectionTextBuilder.append(LangCodeUtils.getLocalizedResources(context,
-                Locale.ENGLISH).getString(R.string.api_level));
-            sectionTextBuilder.append(": ");
-            sectionTextBuilder.append(feedback.getApiLevel());
-            sectionTextBuilder.append("\n");
-        }
-        if (feedback.getAndroidVersion() != null) {
-            sectionTextBuilder.append("* ");
-            sectionTextBuilder.append(LangCodeUtils.getLocalizedResources(context,
-                Locale.ENGLISH).getString(R.string.android_version));
-            sectionTextBuilder.append(": ");
-            sectionTextBuilder.append(feedback.getAndroidVersion());
-            sectionTextBuilder.append("\n");
-        }
-        if (feedback.getDeviceManufacturer() != null) {
-            sectionTextBuilder.append("* ");
-            sectionTextBuilder.append(LangCodeUtils.getLocalizedResources(context,
-                Locale.ENGLISH).getString(R.string.device_manufacturer));
-            sectionTextBuilder.append(": ");
-            sectionTextBuilder.append(feedback.getDeviceManufacturer());
-            sectionTextBuilder.append("\n");
-        }
-        if (feedback.getDeviceModel() != null) {
-            sectionTextBuilder.append("* ");
-            sectionTextBuilder.append(LangCodeUtils.getLocalizedResources(context,
-                Locale.ENGLISH).getString(R.string.device_model));
-            sectionTextBuilder.append(": ");
-            sectionTextBuilder.append(feedback.getDeviceModel());
-            sectionTextBuilder.append("\n");
-        }
-        if (feedback.getDevice() != null) {
-            sectionTextBuilder.append("* ");
-            sectionTextBuilder.append(LangCodeUtils.getLocalizedResources(context,
-                Locale.ENGLISH).getString(R.string.device_name));
-            sectionTextBuilder.append(": ");
-            sectionTextBuilder.append(feedback.getDevice());
-            sectionTextBuilder.append("\n");
-        }
-        if (feedback.getNetworkType() != null) {
-            sectionTextBuilder.append("* ");
-            sectionTextBuilder.append(LangCodeUtils.getLocalizedResources(context,
-                Locale.ENGLISH).getString(R.string.network_type));
-            sectionTextBuilder.append(": ");
-            sectionTextBuilder.append(feedback.getNetworkType());
-            sectionTextBuilder.append("\n");
-        }
-        sectionTextBuilder.append("~~~~");
-        sectionTextBuilder.append("\n");
-
-    }
-
-    public String getSectionText() {
-        return sectionTextBuilder.toString();
-    }
-
-    public String getSectionTitle() {
-        return sectionTitleBuilder.toString();
-    }
-}

app/src/main/java/fr/free/nrw/commons/feedback/FeedbackContentCreator.kt

@@ -0,0 +1,123 @@
+package fr.free.nrw.commons.feedback
+
+import android.content.Context
+import fr.free.nrw.commons.R
+import fr.free.nrw.commons.auth.getUserName
+import fr.free.nrw.commons.feedback.model.Feedback
+import fr.free.nrw.commons.utils.LangCodeUtils.getLocalizedResources
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+import java.util.TimeZone
+
+class FeedbackContentCreator(context: Context, feedback: Feedback) {
+    private var sectionTitleBuilder = StringBuilder()
+    private var sectionTextBuilder = StringBuilder()
+    init {
+        // Localization is not needed here
+        // because this ends up on a page where developers read the feedback,
+        // so English is the most convenient.
+
+        //Get the UTC Date and Time and add it to the Title
+        val dateFormat = SimpleDateFormat("yyyy/MM/dd HH:mm:ss", Locale.ENGLISH)
+        dateFormat.timeZone = TimeZone.getTimeZone("UTC")
+        val utcFormattedDate = dateFormat.format(Date())
+
+        // Construct the feedback section title
+        sectionTitleBuilder.append("Feedback from  ")
+        sectionTitleBuilder.append(getUserName(context))
+        sectionTitleBuilder.append(" for version ")
+        sectionTitleBuilder.append(feedback.version)
+        sectionTitleBuilder.append(" on ")
+        sectionTitleBuilder.append(utcFormattedDate)
+        
+        // Construct the feedback section text
+        sectionTextBuilder = StringBuilder()
+        sectionTextBuilder.append("\n")
+        sectionTextBuilder.append(feedback.title)
+        sectionTextBuilder.append("\n")
+        sectionTextBuilder.append("\n")
+        if (feedback.apiLevel != null) {
+            sectionTextBuilder.append("* ")
+            sectionTextBuilder.append(
+                getLocalizedResources(
+                    context,
+                    Locale.ENGLISH
+                ).getString(R.string.api_level)
+            )
+            sectionTextBuilder.append(": ")
+            sectionTextBuilder.append(feedback.apiLevel)
+            sectionTextBuilder.append("\n")
+        }
+        if (feedback.androidVersion != null) {
+            sectionTextBuilder.append("* ")
+            sectionTextBuilder.append(
+                getLocalizedResources(
+                    context,
+                    Locale.ENGLISH
+                ).getString(R.string.android_version)
+            )
+            sectionTextBuilder.append(": ")
+            sectionTextBuilder.append(feedback.androidVersion)
+            sectionTextBuilder.append("\n")
+        }
+        if (feedback.deviceManufacturer != null) {
+            sectionTextBuilder.append("* ")
+            sectionTextBuilder.append(
+                getLocalizedResources(
+                    context,
+                    Locale.ENGLISH
+                ).getString(R.string.device_manufacturer)
+            )
+            sectionTextBuilder.append(": ")
+            sectionTextBuilder.append(feedback.deviceManufacturer)
+            sectionTextBuilder.append("\n")
+        }
+        if (feedback.deviceModel != null) {
+            sectionTextBuilder.append("* ")
+            sectionTextBuilder.append(
+                getLocalizedResources(
+                    context,
+                    Locale.ENGLISH
+                ).getString(R.string.device_model)
+            )
+            sectionTextBuilder.append(": ")
+            sectionTextBuilder.append(feedback.deviceModel)
+            sectionTextBuilder.append("\n")
+        }
+        if (feedback.device != null) {
+            sectionTextBuilder.append("* ")
+            sectionTextBuilder.append(
+                getLocalizedResources(
+                    context,
+                    Locale.ENGLISH
+                ).getString(R.string.device_name)
+            )
+            sectionTextBuilder.append(": ")
+            sectionTextBuilder.append(feedback.device)
+            sectionTextBuilder.append("\n")
+        }
+        if (feedback.networkType != null) {
+            sectionTextBuilder.append("* ")
+            sectionTextBuilder.append(
+                getLocalizedResources(
+                    context,
+                    Locale.ENGLISH
+                ).getString(R.string.network_type)
+            )
+            sectionTextBuilder.append(": ")
+            sectionTextBuilder.append(feedback.networkType)
+            sectionTextBuilder.append("\n")
+        }
+        sectionTextBuilder.append("~~~~")
+        sectionTextBuilder.append("\n")
+    }
+
+    fun getSectionText(): String {
+        return sectionTextBuilder.toString()
+    }
+
+    fun getSectionTitle(): String {
+        return sectionTitleBuilder.toString()
+    }
+}

app/src/main/java/fr/free/nrw/commons/feedback/FeedbackDialog.java

@@ -1,75 +0,0 @@
-package fr.free.nrw.commons.feedback;
-
-import android.app.Dialog;
-import android.content.Context;
-import android.os.Bundle;
-import android.text.Html;
-import android.text.Spanned;
-import android.text.method.LinkMovementMethod;
-import android.view.View;
-import android.view.WindowManager.LayoutParams;
-import fr.free.nrw.commons.R;
-import fr.free.nrw.commons.databinding.DialogFeedbackBinding;
-import fr.free.nrw.commons.feedback.model.Feedback;
-import fr.free.nrw.commons.utils.ConfigUtils;
-import fr.free.nrw.commons.utils.DeviceInfoUtil;
-import java.util.Objects;
-
-/**
- * Feedback dialog that asks user for message and
- * other device specifications
- */
-public class FeedbackDialog extends Dialog {
-    DialogFeedbackBinding dialogFeedbackBinding;
-
-    private OnFeedbackSubmitCallback onFeedbackSubmitCallback;
-
-    private Spanned feedbackDestinationHtml;
-
-    public FeedbackDialog(Context context, OnFeedbackSubmitCallback onFeedbackSubmitCallback) {
-        super(context);
-        this.onFeedbackSubmitCallback = onFeedbackSubmitCallback;
-        feedbackDestinationHtml = Html.fromHtml(context.getString(R.string.feedback_destination_note));
-    }
-
-    @Override
-    protected void onCreate(final Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        dialogFeedbackBinding = DialogFeedbackBinding.inflate(getLayoutInflater());
-        dialogFeedbackBinding.feedbackDestination.setText(feedbackDestinationHtml);
-        dialogFeedbackBinding.feedbackDestination.setMovementMethod(LinkMovementMethod.getInstance());
-        Objects.requireNonNull(getWindow()).setSoftInputMode(LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
-        final View view = dialogFeedbackBinding.getRoot();
-        setContentView(view);
-        dialogFeedbackBinding.btnSubmitFeedback.setOnClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                submitFeedback();
-            }
-        });
-    }
-
-    /**
-     * When the button is clicked, it will create a feedback object
-     * and give a callback to calling activity/fragment
-     */
-    void submitFeedback() {
-        if(dialogFeedbackBinding.feedbackItemEditText.getText().toString().equals("")) {
-            dialogFeedbackBinding.feedbackItemEditText.setError(getContext().getString(R.string.enter_description));
-            return;
-        }
-        String appVersion = ConfigUtils.getVersionNameWithSha(getContext());
-        String androidVersion = dialogFeedbackBinding.androidVersionCheckbox.isChecked() ? DeviceInfoUtil.getAndroidVersion() : null;
-        String apiLevel = dialogFeedbackBinding.apiLevelCheckbox.isChecked() ? DeviceInfoUtil.getAPILevel() : null;
-        String deviceManufacturer = dialogFeedbackBinding.deviceManufacturerCheckbox.isChecked() ? DeviceInfoUtil.getDeviceManufacturer() : null;
-        String deviceModel = dialogFeedbackBinding.deviceModelCheckbox.isChecked() ? DeviceInfoUtil.getDeviceModel() : null;
-        String deviceName = dialogFeedbackBinding.deviceNameCheckbox.isChecked() ? DeviceInfoUtil.getDevice() : null;
-        String networkType = dialogFeedbackBinding.networkTypeCheckbox.isChecked() ? DeviceInfoUtil.getConnectionType(getContext()).toString() : null;
-        Feedback feedback = new Feedback(appVersion, apiLevel
-            , dialogFeedbackBinding.feedbackItemEditText.getText().toString()
-            , androidVersion, deviceModel, deviceManufacturer, deviceName, networkType);
-        onFeedbackSubmitCallback.onFeedbackSubmit(feedback);
-        dismiss();
-    }
-
-}

app/src/main/java/fr/free/nrw/commons/feedback/FeedbackDialog.kt

@@ -0,0 +1,82 @@
+package fr.free.nrw.commons.feedback
+
+import android.app.Dialog
+import android.content.Context
+import android.os.Bundle
+import android.text.Html
+import android.text.Spanned
+import android.text.method.LinkMovementMethod
+import android.view.WindowManager
+import fr.free.nrw.commons.R
+import fr.free.nrw.commons.databinding.DialogFeedbackBinding
+import fr.free.nrw.commons.feedback.model.Feedback
+import fr.free.nrw.commons.utils.ConfigUtils.getVersionNameWithSha
+import fr.free.nrw.commons.utils.DeviceInfoUtil.getAPILevel
+import fr.free.nrw.commons.utils.DeviceInfoUtil.getAndroidVersion
+import fr.free.nrw.commons.utils.DeviceInfoUtil.getConnectionType
+import fr.free.nrw.commons.utils.DeviceInfoUtil.getDevice
+import fr.free.nrw.commons.utils.DeviceInfoUtil.getDeviceManufacturer
+import fr.free.nrw.commons.utils.DeviceInfoUtil.getDeviceModel
+
+class FeedbackDialog(
+    context: Context,
+    private val onFeedbackSubmitCallback: OnFeedbackSubmitCallback) : Dialog(context) {
+    private var _binding: DialogFeedbackBinding? = null
+    private val binding get() = _binding!!
+    // TODO("Remove Deprecation") Issue : #6002
+    // 'fromHtml(String!): Spanned!' is deprecated. Deprecated in Java
+    @Suppress("DEPRECATION")
+    private var feedbackDestinationHtml: Spanned = Html.fromHtml(
+        context.getString(R.string.feedback_destination_note))
+
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        _binding = DialogFeedbackBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+        binding.feedbackDestination.text = feedbackDestinationHtml
+        binding.feedbackDestination.movementMethod = LinkMovementMethod.getInstance()
+        // TODO("DEPRECATION") Issue : #6002
+        // 'SOFT_INPUT_ADJUST_RESIZE: Int' is deprecated. Deprecated in Java
+        @Suppress("DEPRECATION")
+        window?.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE)
+        binding.btnSubmitFeedback.setOnClickListener {
+            submitFeedback()
+        }
+
+    }
+
+    fun submitFeedback() {
+        if (binding.feedbackItemEditText.getText().toString() == "") {
+            binding.feedbackItemEditText.error = context.getString(R.string.enter_description)
+            return
+        }
+        val appVersion = context.getVersionNameWithSha()
+        val androidVersion =
+            if (binding.androidVersionCheckbox.isChecked) getAndroidVersion() else null
+        val apiLevel =
+            if (binding.apiLevelCheckbox.isChecked) getAPILevel() else null
+        val deviceManufacturer =
+            if (binding.deviceManufacturerCheckbox.isChecked) getDeviceManufacturer() else null
+        val deviceModel =
+            if (binding.deviceModelCheckbox.isChecked) getDeviceModel() else null
+        val deviceName =
+            if (binding.deviceNameCheckbox.isChecked) getDevice() else null
+        val networkType =
+            if (binding.networkTypeCheckbox.isChecked) getConnectionType(
+                context
+            ).toString() else null
+        val feedback = Feedback(
+            appVersion, apiLevel,
+            binding.feedbackItemEditText.getText().toString(),
+            androidVersion, deviceModel, deviceManufacturer, deviceName, networkType
+        )
+        onFeedbackSubmitCallback.onFeedbackSubmit(feedback)
+        dismiss()
+    }
+
+    override fun dismiss() {
+        super.dismiss()
+        _binding = null
+    }
+}

app/src/main/java/fr/free/nrw/commons/feedback/OnFeedbackSubmitCallback.java

@@ -1,15 +0,0 @@
-package fr.free.nrw.commons.feedback;
-
-import fr.free.nrw.commons.feedback.model.Feedback;
-
-/**
- * This interface is used to provide callback
- * from Feedback dialog whenever submit button is clicked
- */
-public interface OnFeedbackSubmitCallback {
-
-    /**
-     * callback function, called when user clicks on submit
-     */
-    void onFeedbackSubmit(Feedback feedback);
-}

app/src/main/java/fr/free/nrw/commons/feedback/OnFeedbackSubmitCallback.kt

@@ -0,0 +1,7 @@
+package fr.free.nrw.commons.feedback
+
+import fr.free.nrw.commons.feedback.model.Feedback
+
+interface OnFeedbackSubmitCallback {
+    fun onFeedbackSubmit(feedback: Feedback)
+}

app/src/main/java/fr/free/nrw/commons/feedback/model/Feedback.java

@@ -1,171 +0,0 @@
-package fr.free.nrw.commons.feedback.model;
-
-/**
- * Pojo class for storing information that are required while uploading a feedback
- */
-public class Feedback {
-    /**
-     * Version of app
-     */
-    private String version;
-    /**
-     * API level of user's phone
-     */
-    private String apiLevel;
-    /**
-     * Title/Description entered by user
-     */
-    private String title;
-    /**
-     * Android version of user's device
-     */
-    private String androidVersion;
-    /**
-     * Device Model of user's device
-     */
-    private String deviceModel;
-    /**
-     * Device manufacturer name
-     */
-    private String deviceManufacturer;
-    /**
-     * Device name stored on user's device
-     */
-    private String device;
-    /**
-     * network type user is having (Ex: Wifi)
-     */
-    private String networkType;
-
-    public Feedback(final String version, final String apiLevel, final String title, final String androidVersion,
-        final String deviceModel, final String deviceManufacturer, final String device, final String networkType
-        ) {
-        this.version = version;
-        this.apiLevel = apiLevel;
-        this.title = title;
-        this.androidVersion = androidVersion;
-        this.deviceModel = deviceModel;
-        this.deviceManufacturer = deviceManufacturer;
-        this.device = device;
-        this.networkType = networkType;
-    }
-
-    /**
-     * Get the version from which this piece of feedback is being sent.
-     * Ex: 3.0.1
-     */
-    public String getVersion() {
-        return version;
-    }
-
-    /**
-     * Set the version of app to given version
-     */
-    public void setVersion(final String version) {
-        this.version = version;
-    }
-
-    /**
-     * gets api level of device
-     * Ex: 28
-     */
-    public String getApiLevel() {
-        return apiLevel;
-    }
-
-    /**
-     * sets api level value to given value
-     */
-    public void setApiLevel(final String apiLevel) {
-        this.apiLevel = apiLevel;
-    }
-
-    /**
-     * gets feedback text entered by user
-     */
-    public String getTitle() {
-        return title;
-    }
-
-    /**
-     * sets feedback text
-     */
-    public void setTitle(final String title) {
-        this.title = title;
-    }
-
-    /**
-     * gets android version of device
-     * Ex: 9
-     */
-    public String getAndroidVersion() {
-        return androidVersion;
-    }
-
-    /**
-     * sets value of android version
-     */
-    public void setAndroidVersion(final String androidVersion) {
-        this.androidVersion = androidVersion;
-    }
-
-    /**
-     * get device model of current device
-     * Ex: Redmi 6 Pro
-     */
-    public String getDeviceModel() {
-        return deviceModel;
-    }
-
-    /**
-     * sets value of device model to a given value
-     */
-    public void setDeviceModel(final String deviceModel) {
-        this.deviceModel = deviceModel;
-    }
-
-    /**
-     * get device manufacturer of user's device
-     * Ex: Redmi
-     */
-    public String getDeviceManufacturer() {
-        return deviceManufacturer;
-    }
-
-    /**
-     * set device manufacturer value to a given value
-     */
-    public void setDeviceManufacturer(final String deviceManufacturer) {
-        this.deviceManufacturer = deviceManufacturer;
-    }
-
-    /**
-     * get device name of user's device
-     */
-    public String getDevice() {
-        return device;
-    }
-
-    /**
-     * sets device name value to a given value
-     */
-    public void setDevice(final String device) {
-        this.device = device;
-    }
-
-    /**
-     * get network type of user's network
-     * Ex: wifi
-     */
-    public String getNetworkType() {
-        return networkType;
-    }
-
-    /**
-     * sets network type to a given value
-     */
-    public void setNetworkType(final String networkType) {
-        this.networkType = networkType;
-    }
-
-}

app/src/main/java/fr/free/nrw/commons/feedback/model/Feedback.kt

@@ -0,0 +1,30 @@
+package fr.free.nrw.commons.feedback.model
+
+/**
+ * Pojo class for storing information that are required while uploading a feedback
+ */
+data class Feedback (
+    // Version of app
+    var version : String? = null,
+
+    // API level of user's phone
+    var apiLevel: String? = null,
+
+    // Title/Description entered by user
+    var title: String? = null,
+
+    // Android version of user's device
+    var androidVersion: String? = null,
+
+    // Device Model of user's device
+    var deviceModel: String? = null,
+
+    // Device manufacturer name
+    var deviceManufacturer: String? = null,
+
+    // Device name stored on user's device
+    var device: String? = null,
+
+    // network type user is having (Ex: Wifi)
+    var networkType: String? = null
+)

app/src/main/java/fr/free/nrw/commons/filepicker/Constants.java

@@ -1,23 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-public interface Constants {
-    String DEFAULT_FOLDER_NAME = "CommonsContributions";
-
-    /**
-     * Provides the request codes for permission handling
-     */
-    interface RequestCodes {
-        int LOCATION = 1;
-        int STORAGE = 2;
-    }
-
-    /**
-     * Provides locations as string for corresponding operations
-     */
-    interface BundleKeys {
-        String FOLDER_NAME = "fr.free.nrw.commons.folder_name";
-        String ALLOW_MULTIPLE = "fr.free.nrw.commons.allow_multiple";
-        String COPY_TAKEN_PHOTOS = "fr.free.nrw.commons.copy_taken_photos";
-        String COPY_PICKED_IMAGES = "fr.free.nrw.commons.copy_picked_images";
-    }
-}

app/src/main/java/fr/free/nrw/commons/filepicker/Costants.kt

@@ -0,0 +1,29 @@
+package fr.free.nrw.commons.filepicker
+
+interface Constants {
+    companion object {
+        const val DEFAULT_FOLDER_NAME = "CommonsContributions"
+    }
+
+    /**
+     * Provides the request codes for permission handling
+     */
+    interface RequestCodes {
+        companion object {
+            const val LOCATION = 1
+            const val STORAGE = 2
+        }
+    }
+
+    /**
+     * Provides locations as string for corresponding operations
+     */
+    interface BundleKeys {
+        companion object {
+            const val FOLDER_NAME = "fr.free.nrw.commons.folder_name"
+            const val ALLOW_MULTIPLE = "fr.free.nrw.commons.allow_multiple"
+            const val COPY_TAKEN_PHOTOS = "fr.free.nrw.commons.copy_taken_photos"
+            const val COPY_PICKED_IMAGES = "fr.free.nrw.commons.copy_picked_images"
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/filepicker/DefaultCallback.java

@@ -1,16 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-/**
- * Provides abstract methods which are overridden while handling Contribution Results
- * inside the ContributionsController 
- */
-public abstract class DefaultCallback implements FilePicker.Callbacks {
-
-    @Override
-    public void onImagePickerError(Exception e, FilePicker.ImageSource source, int type) {
-    }
-
-    @Override
-    public void onCanceled(FilePicker.ImageSource source, int type) {
-    }
-}

app/src/main/java/fr/free/nrw/commons/filepicker/DefaultCallback.kt

@@ -0,0 +1,12 @@
+package fr.free.nrw.commons.filepicker
+
+/**
+ * Provides abstract methods which are overridden while handling Contribution Results
+ * inside the ContributionsController
+ */
+abstract class DefaultCallback: FilePicker.Callbacks {
+
+    override fun onImagePickerError(e: Exception, source: FilePicker.ImageSource, type: Int) {}
+
+    override fun onCanceled(source: FilePicker.ImageSource, type: Int) {}
+}

app/src/main/java/fr/free/nrw/commons/filepicker/ExtendedFileProvider.java

@@ -1,7 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-import androidx.core.content.FileProvider;
-
-public class ExtendedFileProvider extends FileProvider {
-
-}

app/src/main/java/fr/free/nrw/commons/filepicker/ExtendedFileProvider.kt

@@ -0,0 +1,5 @@
+package fr.free.nrw.commons.filepicker
+
+import androidx.core.content.FileProvider
+
+class ExtendedFileProvider: FileProvider() {}

app/src/main/java/fr/free/nrw/commons/filepicker/FilePicker.java

@@ -1,355 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-import static fr.free.nrw.commons.filepicker.PickedFiles.singleFileList;
-
-import android.app.Activity;
-import android.content.ClipData;
-import android.content.Context;
-import android.content.Intent;
-import android.content.SharedPreferences;
-import android.content.pm.PackageManager;
-import android.content.pm.ResolveInfo;
-import android.net.Uri;
-import android.provider.MediaStore;
-import android.text.TextUtils;
-import androidx.activity.result.ActivityResult;
-import androidx.activity.result.ActivityResultLauncher;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.preference.PreferenceManager;
-import fr.free.nrw.commons.customselector.model.Image;
-import fr.free.nrw.commons.customselector.ui.selector.CustomSelectorActivity;
-import java.io.File;
-import java.io.IOException;
-import java.net.URISyntaxException;
-import java.util.ArrayList;
-import java.util.List;
-
-public class FilePicker implements Constants {
-
-    private static final String KEY_PHOTO_URI = "photo_uri";
-    private static final String KEY_VIDEO_URI = "video_uri";
-    private static final String KEY_LAST_CAMERA_PHOTO = "last_photo";
-    private static final String KEY_LAST_CAMERA_VIDEO = "last_video";
-    private static final String KEY_TYPE = "type";
-
-    /**
-     * Returns the uri of the clicked image so that it can be put in MediaStore
-     */
-    private static Uri createCameraPictureFile(@NonNull Context context) throws IOException {
-        File imagePath = PickedFiles.getCameraPicturesLocation(context);
-        Uri uri = PickedFiles.getUriToFile(context, imagePath);
-        SharedPreferences.Editor editor = PreferenceManager.getDefaultSharedPreferences(context).edit();
-        editor.putString(KEY_PHOTO_URI, uri.toString());
-        editor.putString(KEY_LAST_CAMERA_PHOTO, imagePath.toString());
-        editor.apply();
-        return uri;
-    }
-
-    private static Intent createGalleryIntent(@NonNull Context context, int type,
-                                              boolean openDocumentIntentPreferred) {
-        // storing picked image type to shared preferences
-        storeType(context, type);
-        //Supported types are SVG, PNG and JPEG,GIF, TIFF, WebP, XCF
-        final String[] mimeTypes =  { "image/jpg","image/png","image/jpeg", "image/gif", "image/tiff", "image/webp", "image/xcf", "image/svg+xml", "image/webp"};
-        return plainGalleryPickerIntent(openDocumentIntentPreferred)
-                .putExtra(Intent.EXTRA_ALLOW_MULTIPLE, configuration(context).allowsMultiplePickingInGallery())
-            .putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
-    }
-
-    /**
-     * CreateCustomSectorIntent, creates intent for custom selector activity.
-     * @param context
-     * @param type
-     * @return Custom selector intent
-     */
-    private static Intent createCustomSelectorIntent(@NonNull Context context, int type) {
-        storeType(context, type);
-        return new Intent(context, CustomSelectorActivity.class);
-    }
-
-    private static Intent createCameraForImageIntent(@NonNull Context context, int type) {
-        storeType(context, type);
-
-        Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
-        try {
-            Uri capturedImageUri = createCameraPictureFile(context);
-            //We have to explicitly grant the write permission since Intent.setFlag works only on API Level >=20
-            grantWritePermission(context, intent, capturedImageUri);
-            intent.putExtra(MediaStore.EXTRA_OUTPUT, capturedImageUri);
-        } catch (Exception e) {
-            e.printStackTrace();
-        }
-
-        return intent;
-    }
-
-    private static void revokeWritePermission(@NonNull Context context, Uri uri) {
-        context.revokeUriPermission(uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
-    }
-
-    private static void grantWritePermission(@NonNull Context context, Intent intent, Uri uri) {
-        List<ResolveInfo> resInfoList = context.getPackageManager().queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
-        for (ResolveInfo resolveInfo : resInfoList) {
-            String packageName = resolveInfo.activityInfo.packageName;
-            context.grantUriPermission(packageName, uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
-        }
-    }
-
-    private static void storeType(@NonNull Context context, int type) {
-        PreferenceManager.getDefaultSharedPreferences(context).edit().putInt(KEY_TYPE, type).apply();
-    }
-
-    private static int restoreType(@NonNull Context context) {
-        return PreferenceManager.getDefaultSharedPreferences(context).getInt(KEY_TYPE, 0);
-    }
-
-    /**
-     * Opens default galery or a available galleries picker if there is no default
-     *
-     * @param type Custom type of your choice, which will be returned with the images
-     */
-    public static void openGallery(Activity activity, ActivityResultLauncher<Intent> resultLauncher, int type, boolean openDocumentIntentPreferred) {
-        Intent intent = createGalleryIntent(activity, type, openDocumentIntentPreferred);
-        resultLauncher.launch(intent);
-    }
-
-    /**
-     * Opens Custom Selector
-     */
-    public static void openCustomSelector(Activity activity, ActivityResultLauncher<Intent> resultLauncher, int type) {
-        Intent intent = createCustomSelectorIntent(activity, type);
-        resultLauncher.launch(intent);
-    }
-
-    /**
-     * Opens the camera app to pick image clicked by user 
-     */
-    public static void openCameraForImage(Activity activity, ActivityResultLauncher<Intent> resultLauncher, int type) {
-        Intent intent = createCameraForImageIntent(activity, type);
-        resultLauncher.launch(intent);
-    }
-
-    @Nullable
-    private static UploadableFile takenCameraPicture(Context context) throws URISyntaxException {
-        String lastCameraPhoto = PreferenceManager.getDefaultSharedPreferences(context).getString(KEY_LAST_CAMERA_PHOTO, null);
-        if (lastCameraPhoto != null) {
-            return new UploadableFile(new File(lastCameraPhoto));
-        } else {
-            return null;
-        }
-    }
-
-    @Nullable
-    private static UploadableFile takenCameraVideo(Context context) throws URISyntaxException {
-        String lastCameraPhoto = PreferenceManager.getDefaultSharedPreferences(context).getString(KEY_LAST_CAMERA_VIDEO, null);
-        if (lastCameraPhoto != null) {
-            return new UploadableFile(new File(lastCameraPhoto));
-        } else {
-            return null;
-        }
-    }
-
-    public static List<UploadableFile> handleExternalImagesPicked(Intent data, Activity activity) {
-        try {
-            return getFilesFromGalleryPictures(data, activity);
-        } catch (IOException | SecurityException e) {
-            e.printStackTrace();
-        }
-        return new ArrayList<>();
-    }
-
-    private static boolean isPhoto(Intent data) {
-        return data == null || (data.getData() == null && data.getClipData() == null);
-    }
-
-    private static Intent plainGalleryPickerIntent(boolean openDocumentIntentPreferred) {
-        /*
-         * Asking for ACCESS_MEDIA_LOCATION at runtime solved the location-loss issue
-         * in the custom selector in Contributions fragment.
-         * Detailed discussion: https://github.com/commons-app/apps-android-commons/issues/5015
-         *
-         * This permission check, however, was insufficient to fix location-loss in
-         * the regular selector in Contributions fragment and Nearby fragment,
-         * especially on some devices running Android 13 that use the new Photo Picker by default.
-         *
-         * New Photo Picker: https://developer.android.com/training/data-storage/shared/photopicker
-         *
-         * The new Photo Picker introduced by Android redacts location tags from EXIF metadata.
-         * Reported on the Google Issue Tracker: https://issuetracker.google.com/issues/243294058
-         * Status: Won't fix (Intended behaviour)
-         *
-         * Switched intent from ACTION_GET_CONTENT to ACTION_OPEN_DOCUMENT (by default; can
-         * be changed through the Setting page) as:
-         *
-         * ACTION_GET_CONTENT opens the 'best application' for choosing that kind of data
-         * The best application is the new Photo Picker that redacts the location tags
-         *
-         * ACTION_OPEN_DOCUMENT, however,  displays the various DocumentsProvider instances
-         * installed on the device, letting the user interactively navigate through them.
-         *
-         * So, this allows us to use the traditional file picker that does not redact location tags
-         * from EXIF.
-         *
-         */
-        Intent intent;
-        if (openDocumentIntentPreferred) {
-            intent = new Intent(Intent.ACTION_OPEN_DOCUMENT);
-        } else {
-            intent = new Intent(Intent.ACTION_GET_CONTENT);
-        }
-        intent.setType("image/*");
-        return intent;
-    }
-
-    public static void onPictureReturnedFromDocuments(ActivityResult result, Activity activity, @NonNull FilePicker.Callbacks callbacks) {
-        if(result.getResultCode() == Activity.RESULT_OK && !isPhoto(result.getData())){
-            try {
-                Uri photoPath = result.getData().getData();
-                UploadableFile photoFile = PickedFiles.pickedExistingPicture(activity, photoPath);
-                callbacks.onImagesPicked(singleFileList(photoFile), FilePicker.ImageSource.DOCUMENTS, restoreType(activity));
-
-                if (configuration(activity).shouldCopyPickedImagesToPublicGalleryAppFolder()) {
-                    PickedFiles.copyFilesInSeparateThread(activity, singleFileList(photoFile));
-                }
-            } catch (Exception e) {
-                e.printStackTrace();
-                callbacks.onImagePickerError(e, FilePicker.ImageSource.DOCUMENTS, restoreType(activity));
-            }
-        } else {
-            callbacks.onCanceled(FilePicker.ImageSource.DOCUMENTS, restoreType(activity));
-        }
-    }
-
-    /**
-     * onPictureReturnedFromCustomSelector.
-     * Retrieve and forward the images to upload wizard through callback.
-     */
-    public static void onPictureReturnedFromCustomSelector(ActivityResult result, Activity activity, @NonNull FilePicker.Callbacks callbacks) {
-       if(result.getResultCode() == Activity.RESULT_OK){
-           try {
-               List<UploadableFile> files = getFilesFromCustomSelector(result.getData(), activity);
-               callbacks.onImagesPicked(files, ImageSource.CUSTOM_SELECTOR, restoreType(activity));
-           } catch (Exception e) {
-               e.printStackTrace();
-               callbacks.onImagePickerError(e, ImageSource.CUSTOM_SELECTOR, restoreType(activity));
-           }
-       } else {
-           callbacks.onCanceled(ImageSource.CUSTOM_SELECTOR, restoreType(activity));
-       }
-    }
-
-    /**
-     * Get files from custom selector
-     * Retrieve and process the selected images from the custom selector.
-     */
-    private static List<UploadableFile> getFilesFromCustomSelector(Intent data, Activity activity) throws  IOException, SecurityException {
-        List<UploadableFile> files = new ArrayList<>();
-        ArrayList<Image> images = data.getParcelableArrayListExtra("Images");
-        for(Image image : images) {
-            Uri uri = image.getUri();
-            UploadableFile file = PickedFiles.pickedExistingPicture(activity, uri);
-            files.add(file);
-        }
-
-        if (configuration(activity).shouldCopyPickedImagesToPublicGalleryAppFolder()) {
-            PickedFiles.copyFilesInSeparateThread(activity, files);
-        }
-
-        return files;
-    }
-
-    public static void onPictureReturnedFromGallery(ActivityResult result, Activity activity, @NonNull FilePicker.Callbacks callbacks) {
-        if(result.getResultCode() == Activity.RESULT_OK && !isPhoto(result.getData())){
-            try {
-                List<UploadableFile> files = getFilesFromGalleryPictures(result.getData(), activity);
-                callbacks.onImagesPicked(files, FilePicker.ImageSource.GALLERY, restoreType(activity));
-            } catch (Exception e) {
-                e.printStackTrace();
-                callbacks.onImagePickerError(e, FilePicker.ImageSource.GALLERY, restoreType(activity));
-            }
-        } else{
-            callbacks.onCanceled(FilePicker.ImageSource.GALLERY, restoreType(activity));
-        }
-    }
-
-    private static List<UploadableFile> getFilesFromGalleryPictures(Intent data, Activity activity) throws IOException, SecurityException {
-        List<UploadableFile> files = new ArrayList<>();
-        ClipData clipData = data.getClipData();
-        if (clipData == null) {
-            Uri uri = data.getData();
-            UploadableFile file = PickedFiles.pickedExistingPicture(activity, uri);
-            files.add(file);
-        } else {
-            for (int i = 0; i < clipData.getItemCount(); i++) {
-                Uri uri = clipData.getItemAt(i).getUri();
-                UploadableFile file = PickedFiles.pickedExistingPicture(activity, uri);
-                files.add(file);
-            }
-        }
-
-        if (configuration(activity).shouldCopyPickedImagesToPublicGalleryAppFolder()) {
-            PickedFiles.copyFilesInSeparateThread(activity, files);
-        }
-
-        return files;
-    }
-
-    public static void onPictureReturnedFromCamera(ActivityResult activityResult, Activity activity, @NonNull FilePicker.Callbacks callbacks) {
-        if(activityResult.getResultCode() == Activity.RESULT_OK){
-            try {
-                String lastImageUri = PreferenceManager.getDefaultSharedPreferences(activity).getString(KEY_PHOTO_URI, null);
-                if (!TextUtils.isEmpty(lastImageUri)) {
-                    revokeWritePermission(activity, Uri.parse(lastImageUri));
-                }
-
-                UploadableFile photoFile = FilePicker.takenCameraPicture(activity);
-                List<UploadableFile> files = new ArrayList<>();
-                files.add(photoFile);
-
-                if (photoFile == null) {
-                    Exception e = new IllegalStateException("Unable to get the picture returned from camera");
-                    callbacks.onImagePickerError(e, FilePicker.ImageSource.CAMERA_IMAGE, restoreType(activity));
-                } else {
-                    if (configuration(activity).shouldCopyTakenPhotosToPublicGalleryAppFolder()) {
-                        PickedFiles.copyFilesInSeparateThread(activity, singleFileList(photoFile));
-                    }
-
-                    callbacks.onImagesPicked(files, FilePicker.ImageSource.CAMERA_IMAGE, restoreType(activity));
-                }
-
-                PreferenceManager.getDefaultSharedPreferences(activity)
-                    .edit()
-                    .remove(KEY_LAST_CAMERA_PHOTO)
-                    .remove(KEY_PHOTO_URI)
-                    .apply();
-            } catch (Exception e) {
-                e.printStackTrace();
-                callbacks.onImagePickerError(e, FilePicker.ImageSource.CAMERA_IMAGE, restoreType(activity));
-            }
-        } else {
-            callbacks.onCanceled(FilePicker.ImageSource.CAMERA_IMAGE, restoreType(activity));
-        }
-    }
-
-    public static FilePickerConfiguration configuration(@NonNull Context context) {
-        return new FilePickerConfiguration(context);
-    }
-
-
-    public enum ImageSource {
-        GALLERY, DOCUMENTS, CAMERA_IMAGE, CAMERA_VIDEO, CUSTOM_SELECTOR
-    }
-
-    public interface Callbacks {
-        void onImagePickerError(Exception e, FilePicker.ImageSource source, int type);
-
-        void onImagesPicked(@NonNull List<UploadableFile> imageFiles, FilePicker.ImageSource source, int type);
-
-        void onCanceled(FilePicker.ImageSource source, int type);
-    }
-
-    public interface HandleActivityResult{
-        void onHandleActivityResult(FilePicker.Callbacks callbacks);
-    }
-}

app/src/main/java/fr/free/nrw/commons/filepicker/FilePicker.kt

@@ -0,0 +1,441 @@
+package fr.free.nrw.commons.filepicker
+
+import android.app.Activity
+import android.content.Context
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.net.Uri
+import android.provider.MediaStore
+import androidx.activity.result.ActivityResult
+import androidx.activity.result.ActivityResultLauncher
+import androidx.preference.PreferenceManager
+import fr.free.nrw.commons.customselector.model.Image
+import fr.free.nrw.commons.customselector.ui.selector.CustomSelectorActivity
+import fr.free.nrw.commons.filepicker.PickedFiles.singleFileList
+import java.io.File
+import java.io.IOException
+import java.net.URISyntaxException
+
+
+object FilePicker : Constants {
+
+    private const val KEY_PHOTO_URI = "photo_uri"
+    private const val KEY_VIDEO_URI = "video_uri"
+    private const val KEY_LAST_CAMERA_PHOTO = "last_photo"
+    private const val KEY_LAST_CAMERA_VIDEO = "last_video"
+    private const val KEY_TYPE = "type"
+
+    /**
+     * Returns the uri of the clicked image so that it can be put in MediaStore
+     */
+    @Throws(IOException::class)
+    @JvmStatic
+    private fun createCameraPictureFile(context: Context): Uri {
+        val imagePath = PickedFiles.getCameraPicturesLocation(context)
+        val uri = PickedFiles.getUriToFile(context, imagePath)
+        val editor = PreferenceManager.getDefaultSharedPreferences(context).edit()
+        editor.putString(KEY_PHOTO_URI, uri.toString())
+        editor.putString(KEY_LAST_CAMERA_PHOTO, imagePath.toString())
+        editor.apply()
+        return uri
+    }
+
+
+    @JvmStatic
+    private fun createGalleryIntent(
+        context: Context,
+        type: Int,
+        openDocumentIntentPreferred: Boolean
+    ): Intent {
+        // storing picked image type to shared preferences
+        storeType(context, type)
+        // Supported types are SVG, PNG and JPEG, GIF, TIFF, WebP, XCF
+        val mimeTypes = arrayOf(
+            "image/jpg",
+            "image/png",
+            "image/jpeg",
+            "image/gif",
+            "image/tiff",
+            "image/webp",
+            "image/xcf",
+            "image/svg+xml",
+            "image/webp"
+        )
+        return plainGalleryPickerIntent(openDocumentIntentPreferred)
+            .putExtra(
+                Intent.EXTRA_ALLOW_MULTIPLE,
+                configuration(context).allowsMultiplePickingInGallery()
+            )
+            .putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes)
+    }
+
+    /**
+     * CreateCustomSectorIntent, creates intent for custom selector activity.
+     * @param context
+     * @param type
+     * @return Custom selector intent
+     */
+    @JvmStatic
+    private fun createCustomSelectorIntent(context: Context, type: Int): Intent {
+        storeType(context, type)
+        return Intent(context, CustomSelectorActivity::class.java)
+    }
+
+    @JvmStatic
+    private fun createCameraForImageIntent(context: Context, type: Int): Intent {
+        storeType(context, type)
+
+        val intent = Intent(MediaStore.ACTION_IMAGE_CAPTURE)
+        try {
+            val capturedImageUri = createCameraPictureFile(context)
+            // We have to explicitly grant the write permission since Intent.setFlag works only on API Level >=20
+            grantWritePermission(context, intent, capturedImageUri)
+            intent.putExtra(MediaStore.EXTRA_OUTPUT, capturedImageUri)
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+
+        return intent
+    }
+
+    @JvmStatic
+    private fun revokeWritePermission(context: Context, uri: Uri) {
+        context.revokeUriPermission(
+            uri,
+            Intent.FLAG_GRANT_WRITE_URI_PERMISSION or Intent.FLAG_GRANT_READ_URI_PERMISSION
+        )
+    }
+
+    @JvmStatic
+    private fun grantWritePermission(context: Context, intent: Intent, uri: Uri) {
+        val resInfoList =
+            context.packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)
+        for (resolveInfo in resInfoList) {
+            val packageName = resolveInfo.activityInfo.packageName
+            context.grantUriPermission(
+                packageName,
+                uri,
+                Intent.FLAG_GRANT_WRITE_URI_PERMISSION or Intent.FLAG_GRANT_READ_URI_PERMISSION
+            )
+        }
+    }
+
+    @JvmStatic
+    private fun storeType(context: Context, type: Int) {
+        PreferenceManager.getDefaultSharedPreferences(context).edit().putInt(KEY_TYPE, type).apply()
+    }
+
+    @JvmStatic
+    private fun restoreType(context: Context): Int {
+        return PreferenceManager.getDefaultSharedPreferences(context).getInt(KEY_TYPE, 0)
+    }
+
+    /**
+     * Opens default gallery or available galleries picker if there is no default
+     *
+     * @param type Custom type of your choice, which will be returned with the images
+     */
+    @JvmStatic
+    fun openGallery(
+        activity: Activity,
+        resultLauncher: ActivityResultLauncher<Intent>,
+        type: Int,
+        openDocumentIntentPreferred: Boolean
+    ) {
+        val intent = createGalleryIntent(activity, type, openDocumentIntentPreferred)
+        resultLauncher.launch(intent)
+    }
+
+    /**
+     * Opens Custom Selector
+     */
+    @JvmStatic
+    fun openCustomSelector(
+        activity: Activity,
+        resultLauncher: ActivityResultLauncher<Intent>,
+        type: Int
+    ) {
+        val intent = createCustomSelectorIntent(activity, type)
+        resultLauncher.launch(intent)
+    }
+
+    /**
+     * Opens the camera app to pick image clicked by user
+     */
+    @JvmStatic
+    fun openCameraForImage(
+        activity: Activity,
+        resultLauncher: ActivityResultLauncher<Intent>,
+        type: Int
+    ) {
+        val intent = createCameraForImageIntent(activity, type)
+        resultLauncher.launch(intent)
+    }
+
+    @Throws(URISyntaxException::class)
+    @JvmStatic
+    private fun takenCameraPicture(context: Context): UploadableFile? {
+        val lastCameraPhoto = PreferenceManager.getDefaultSharedPreferences(context)
+            .getString(KEY_LAST_CAMERA_PHOTO, null)
+        return if (lastCameraPhoto != null) {
+            UploadableFile(File(lastCameraPhoto))
+        } else {
+            null
+        }
+    }
+
+    @Throws(URISyntaxException::class)
+    @JvmStatic
+    private fun takenCameraVideo(context: Context): UploadableFile? {
+        val lastCameraVideo = PreferenceManager.getDefaultSharedPreferences(context)
+            .getString(KEY_LAST_CAMERA_VIDEO, null)
+        return if (lastCameraVideo != null) {
+            UploadableFile(File(lastCameraVideo))
+        } else {
+            null
+        }
+    }
+
+    @JvmStatic
+    fun handleExternalImagesPicked(data: Intent?, activity: Activity): List<UploadableFile> {
+        return try {
+            getFilesFromGalleryPictures(data, activity)
+        } catch (e: IOException) {
+            e.printStackTrace()
+            emptyList()
+        } catch (e: SecurityException) {
+            e.printStackTrace()
+            emptyList()
+        }
+    }
+
+    @JvmStatic
+    private fun isPhoto(data: Intent?): Boolean {
+        return data == null || (data.data == null && data.clipData == null)
+    }
+
+    @JvmStatic
+    private fun plainGalleryPickerIntent(
+        openDocumentIntentPreferred: Boolean
+    ): Intent {
+        /*
+         * Asking for ACCESS_MEDIA_LOCATION at runtime solved the location-loss issue
+         * in the custom selector in Contributions fragment.
+         * Detailed discussion: https://github.com/commons-app/apps-android-commons/issues/5015
+         *
+         * This permission check, however, was insufficient to fix location-loss in
+         * the regular selector in Contributions fragment and Nearby fragment,
+         * especially on some devices running Android 13 that use the new Photo Picker by default.
+         *
+         * New Photo Picker: https://developer.android.com/training/data-storage/shared/photopicker
+         *
+         * The new Photo Picker introduced by Android redacts location tags from EXIF metadata.
+         * Reported on the Google Issue Tracker: https://issuetracker.google.com/issues/243294058
+         * Status: Won't fix (Intended behaviour)
+         *
+         * Switched intent from ACTION_GET_CONTENT to ACTION_OPEN_DOCUMENT (by default; can
+         * be changed through the Setting page) as:
+         *
+         * ACTION_GET_CONTENT opens the 'best application' for choosing that kind of data
+         * The best application is the new Photo Picker that redacts the location tags
+         *
+         * ACTION_OPEN_DOCUMENT, however,  displays the various DocumentsProvider instances
+         * installed on the device, letting the user interactively navigate through them.
+         *
+         * So, this allows us to use the traditional file picker that does not redact location tags
+         * from EXIF.
+         *
+         */
+        val intent = if (openDocumentIntentPreferred) {
+            Intent(Intent.ACTION_OPEN_DOCUMENT)
+        } else {
+            Intent(Intent.ACTION_GET_CONTENT)
+        }
+        intent.type = "image/*"
+        return intent
+    }
+
+    @JvmStatic
+    fun onPictureReturnedFromDocuments(
+        result: ActivityResult,
+        activity: Activity,
+        callbacks: Callbacks
+    ) {
+        if (result.resultCode == Activity.RESULT_OK && !isPhoto(result.data)) {
+            try {
+                val photoPath = result.data?.data
+                val photoFile = PickedFiles.pickedExistingPicture(activity, photoPath!!)
+                callbacks.onImagesPicked(
+                    singleFileList(photoFile),
+                    ImageSource.DOCUMENTS,
+                    restoreType(activity)
+                )
+
+                if (configuration(activity).shouldCopyPickedImagesToPublicGalleryAppFolder()) {
+                    PickedFiles.copyFilesInSeparateThread(activity, singleFileList(photoFile))
+                }
+            } catch (e: Exception) {
+                e.printStackTrace()
+                callbacks.onImagePickerError(e, ImageSource.DOCUMENTS, restoreType(activity))
+            }
+        } else {
+            callbacks.onCanceled(ImageSource.DOCUMENTS, restoreType(activity))
+        }
+    }
+
+    /**
+     * onPictureReturnedFromCustomSelector.
+     * Retrieve and forward the images to upload wizard through callback.
+     */
+    @JvmStatic
+    fun onPictureReturnedFromCustomSelector(
+        result: ActivityResult,
+        activity: Activity,
+        callbacks: Callbacks
+    ) {
+        if (result.resultCode == Activity.RESULT_OK) {
+            try {
+                val files = getFilesFromCustomSelector(result.data, activity)
+                callbacks.onImagesPicked(files, ImageSource.CUSTOM_SELECTOR, restoreType(activity))
+            } catch (e: Exception) {
+                e.printStackTrace()
+                callbacks.onImagePickerError(e, ImageSource.CUSTOM_SELECTOR, restoreType(activity))
+            }
+        } else {
+            callbacks.onCanceled(ImageSource.CUSTOM_SELECTOR, restoreType(activity))
+        }
+    }
+
+    /**
+     * Get files from custom selector
+     * Retrieve and process the selected images from the custom selector.
+     */
+    @Throws(IOException::class, SecurityException::class)
+    @JvmStatic
+    private fun getFilesFromCustomSelector(
+        data: Intent?,
+        activity: Activity
+    ): List<UploadableFile> {
+        val files = mutableListOf<UploadableFile>()
+        val images = data?.getParcelableArrayListExtra<Image>("Images")
+        images?.forEach { image ->
+            val uri = image.uri
+            val file = PickedFiles.pickedExistingPicture(activity, uri)
+            files.add(file)
+        }
+
+        if (configuration(activity).shouldCopyPickedImagesToPublicGalleryAppFolder()) {
+            PickedFiles.copyFilesInSeparateThread(activity, files)
+        }
+
+        return files
+    }
+
+    @JvmStatic
+    fun onPictureReturnedFromGallery(
+        result: ActivityResult,
+        activity: Activity,
+        callbacks: Callbacks
+    ) {
+        if (result.resultCode == Activity.RESULT_OK && !isPhoto(result.data)) {
+            try {
+                val files = getFilesFromGalleryPictures(result.data, activity)
+                callbacks.onImagesPicked(files, ImageSource.GALLERY, restoreType(activity))
+            } catch (e: Exception) {
+                e.printStackTrace()
+                callbacks.onImagePickerError(e, ImageSource.GALLERY, restoreType(activity))
+            }
+        } else {
+            callbacks.onCanceled(ImageSource.GALLERY, restoreType(activity))
+        }
+    }
+
+    @Throws(IOException::class, SecurityException::class)
+    @JvmStatic
+    private fun getFilesFromGalleryPictures(
+        data: Intent?,
+        activity: Activity
+    ): List<UploadableFile> {
+        val files = mutableListOf<UploadableFile>()
+        val clipData = data?.clipData
+        if (clipData == null) {
+            val uri = data?.data
+            val file = PickedFiles.pickedExistingPicture(activity, uri!!)
+            files.add(file)
+        } else {
+            for (i in 0 until clipData.itemCount) {
+                val uri = clipData.getItemAt(i).uri
+                val file = PickedFiles.pickedExistingPicture(activity, uri)
+                files.add(file)
+            }
+        }
+
+        if (configuration(activity).shouldCopyPickedImagesToPublicGalleryAppFolder()) {
+            PickedFiles.copyFilesInSeparateThread(activity, files)
+        }
+
+        return files
+    }
+
+    @JvmStatic
+    fun onPictureReturnedFromCamera(
+        activityResult: ActivityResult,
+        activity: Activity,
+        callbacks: Callbacks
+    ) {
+        if (activityResult.resultCode == Activity.RESULT_OK) {
+            try {
+                val lastImageUri = PreferenceManager.getDefaultSharedPreferences(activity)
+                    .getString(KEY_PHOTO_URI, null)
+                if (!lastImageUri.isNullOrEmpty()) {
+                    revokeWritePermission(activity, Uri.parse(lastImageUri))
+                }
+
+                val photoFile = takenCameraPicture(activity)
+                val files = mutableListOf<UploadableFile>()
+                photoFile?.let { files.add(it) }
+
+                if (photoFile == null) {
+                    val e = IllegalStateException("Unable to get the picture returned from camera")
+                    callbacks.onImagePickerError(e, ImageSource.CAMERA_IMAGE, restoreType(activity))
+                } else {
+                    if (configuration(activity).shouldCopyTakenPhotosToPublicGalleryAppFolder()) {
+                        PickedFiles.copyFilesInSeparateThread(activity, singleFileList(photoFile))
+                    }
+                    callbacks.onImagesPicked(files, ImageSource.CAMERA_IMAGE, restoreType(activity))
+                }
+
+                PreferenceManager.getDefaultSharedPreferences(activity).edit()
+                    .remove(KEY_LAST_CAMERA_PHOTO)
+                    .remove(KEY_PHOTO_URI)
+                    .apply()
+            } catch (e: Exception) {
+                e.printStackTrace()
+                callbacks.onImagePickerError(e, ImageSource.CAMERA_IMAGE, restoreType(activity))
+            }
+        } else {
+            callbacks.onCanceled(ImageSource.CAMERA_IMAGE, restoreType(activity))
+        }
+    }
+
+    @JvmStatic
+    fun configuration(context: Context): FilePickerConfiguration {
+        return FilePickerConfiguration(context)
+    }
+
+    enum class ImageSource {
+        GALLERY, DOCUMENTS, CAMERA_IMAGE, CAMERA_VIDEO, CUSTOM_SELECTOR
+    }
+
+    interface Callbacks {
+        fun onImagePickerError(e: Exception, source: ImageSource, type: Int)
+
+        fun onImagesPicked(imageFiles: List<UploadableFile>, source: ImageSource, type: Int)
+
+        fun onCanceled(source: ImageSource, type: Int)
+    }
+
+    interface HandleActivityResult {
+        fun onHandleActivityResult(callbacks: Callbacks)
+    }
+}

app/src/main/java/fr/free/nrw/commons/filepicker/FilePickerConfiguration.java

@@ -1,44 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-import android.content.Context;
-import androidx.preference.PreferenceManager;
-
-public class FilePickerConfiguration implements Constants {
-
-    private Context context;
-
-    FilePickerConfiguration(Context context) {
-        this.context = context;
-    }
-
-    public FilePickerConfiguration setAllowMultiplePickInGallery(boolean allowMultiple) {
-        PreferenceManager.getDefaultSharedPreferences(context).edit()
-                .putBoolean(BundleKeys.ALLOW_MULTIPLE, allowMultiple)
-                .apply();
-        return this;
-    }
-
-    public FilePickerConfiguration setCopyTakenPhotosToPublicGalleryAppFolder(boolean copy) {
-        PreferenceManager.getDefaultSharedPreferences(context).edit()
-                .putBoolean(BundleKeys.COPY_TAKEN_PHOTOS, copy)
-                .apply();
-        return this;
-    }
-
-    public String getFolderName() {
-        return PreferenceManager.getDefaultSharedPreferences(context).getString(BundleKeys.FOLDER_NAME, DEFAULT_FOLDER_NAME);
-    }
-
-    public boolean allowsMultiplePickingInGallery() {
-        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(BundleKeys.ALLOW_MULTIPLE, false);
-    }
-
-    public boolean shouldCopyTakenPhotosToPublicGalleryAppFolder() {
-        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(BundleKeys.COPY_TAKEN_PHOTOS, false);
-    }
-
-    public boolean shouldCopyPickedImagesToPublicGalleryAppFolder() {
-        return PreferenceManager.getDefaultSharedPreferences(context).getBoolean(BundleKeys.COPY_PICKED_IMAGES, false);
-    }
-
-}

app/src/main/java/fr/free/nrw/commons/filepicker/FilePickerConfiguration.kt

@@ -0,0 +1,46 @@
+package fr.free.nrw.commons.filepicker
+
+import android.content.Context
+import androidx.preference.PreferenceManager
+
+class FilePickerConfiguration(
+    private val context: Context
+): Constants {
+
+    fun setAllowMultiplePickInGallery(allowMultiple: Boolean): FilePickerConfiguration {
+        PreferenceManager.getDefaultSharedPreferences(context).edit()
+            .putBoolean(Constants.BundleKeys.ALLOW_MULTIPLE, allowMultiple)
+            .apply()
+        return this
+    }
+
+    fun setCopyTakenPhotosToPublicGalleryAppFolder(copy: Boolean): FilePickerConfiguration {
+        PreferenceManager.getDefaultSharedPreferences(context).edit()
+            .putBoolean(Constants.BundleKeys.COPY_TAKEN_PHOTOS, copy)
+            .apply()
+        return this
+    }
+
+    fun getFolderName(): String {
+        return PreferenceManager.getDefaultSharedPreferences(context)
+            .getString(
+                Constants.BundleKeys.FOLDER_NAME,
+                Constants.DEFAULT_FOLDER_NAME
+            ) ?: Constants.DEFAULT_FOLDER_NAME
+    }
+
+    fun allowsMultiplePickingInGallery(): Boolean {
+        return PreferenceManager.getDefaultSharedPreferences(context)
+            .getBoolean(Constants.BundleKeys.ALLOW_MULTIPLE, false)
+    }
+
+    fun shouldCopyTakenPhotosToPublicGalleryAppFolder(): Boolean {
+        return PreferenceManager.getDefaultSharedPreferences(context)
+            .getBoolean(Constants.BundleKeys.COPY_TAKEN_PHOTOS, false)
+    }
+
+    fun shouldCopyPickedImagesToPublicGalleryAppFolder(): Boolean {
+        return PreferenceManager.getDefaultSharedPreferences(context)
+            .getBoolean(Constants.BundleKeys.COPY_PICKED_IMAGES, false)
+    }
+}

app/src/main/java/fr/free/nrw/commons/filepicker/MimeTypeMapWrapper.java

@@ -1,26 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-import android.webkit.MimeTypeMap;
-
-import com.facebook.common.internal.ImmutableMap;
-
-import java.util.Map;
-
-public class MimeTypeMapWrapper {
-
-    private static final MimeTypeMap sMimeTypeMap = MimeTypeMap.getSingleton();
-
-    private static final Map<String, String> sMimeTypeToExtensionMap =
-            ImmutableMap.of(
-                    "image/heif", "heif",
-                    "image/heic", "heic");
-
-    public static String getExtensionFromMimeType(String mimeType) {
-        String result = sMimeTypeToExtensionMap.get(mimeType);
-        if (result != null) {
-            return result;
-        }
-        return sMimeTypeMap.getExtensionFromMimeType(mimeType);
-    }
-
-}

app/src/main/java/fr/free/nrw/commons/filepicker/MimeTypeMapWrapper.kt

@@ -0,0 +1,24 @@
+package fr.free.nrw.commons.filepicker
+
+import android.webkit.MimeTypeMap
+
+class MimeTypeMapWrapper {
+
+    companion object {
+        private val sMimeTypeMap = MimeTypeMap.getSingleton()
+
+        private val sMimeTypeToExtensionMap = mapOf(
+            "image/heif" to "heif",
+            "image/heic" to "heic"
+        )
+
+        @JvmStatic
+        fun getExtensionFromMimeType(mimeType: String): String? {
+            val result = sMimeTypeToExtensionMap[mimeType]
+            if (result != null) {
+                return result
+            }
+            return sMimeTypeMap.getExtensionFromMimeType(mimeType)
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/filepicker/PickedFiles.java

@@ -1,208 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-import android.content.ContentResolver;
-import android.content.Context;
-import android.media.MediaScannerConnection;
-import android.net.Uri;
-import android.os.Environment;
-import android.webkit.MimeTypeMap;
-
-import androidx.annotation.NonNull;
-import androidx.core.content.FileProvider;
-
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.io.InputStream;
-import java.io.OutputStream;
-import java.text.SimpleDateFormat;
-import java.util.ArrayList;
-import java.util.Calendar;
-import java.util.List;
-import java.util.UUID;
-
-import timber.log.Timber;
-
-/**
- * PickedFiles.
- * Process the upload items.
- */
-public class PickedFiles implements Constants {
-
-    /**
-     * Get Folder Name
-     * @param context
-     * @return default application folder name.
-     */
-    private static String getFolderName(@NonNull Context context) {
-        return FilePicker.configuration(context).getFolderName();
-    }
-
-    /**
-     * tempImageDirectory
-     * @param context
-     * @return temporary image directory to copy and perform exif changes.
-     */
-    private static File tempImageDirectory(@NonNull Context context) {
-        File privateTempDir = new File(context.getCacheDir(), DEFAULT_FOLDER_NAME);
-        if (!privateTempDir.exists()) privateTempDir.mkdirs();
-        return privateTempDir;
-    }
-
-    /**
-     * writeToFile
-     * writes inputStream data to the destination file.
-     * @param in input stream of source file.
-     * @param file destination file
-     */
-    private static void writeToFile(InputStream in, File file) throws IOException {
-        try (OutputStream out = new FileOutputStream(file)) {
-            byte[] buf = new byte[1024];
-            int len;
-            while ((len = in.read(buf)) > 0) {
-                out.write(buf, 0, len);
-            }
-        }
-    }
-
-    /**
-     * Copy file function.
-     * Copies source file to destination file.
-     * @param src source file
-     * @param dst destination file
-     * @throws IOException (File input stream exception)
-     */
-    private static void copyFile(File src, File dst) throws IOException {
-        try (InputStream in = new FileInputStream(src)) {
-            writeToFile(in, dst);
-        }
-    }
-
-    /**
-     * Copy files in separate thread.
-     * Copies all the uploadable files to the temp image folder on background thread.
-     * @param context
-     * @param filesToCopy uploadable file list to be copied.
-     */
-    static void copyFilesInSeparateThread(final Context context, final List<UploadableFile> filesToCopy) {
-        new Thread(() -> {
-            List<File> copiedFiles = new ArrayList<>();
-            int i = 1;
-            for (UploadableFile uploadableFile : filesToCopy) {
-                File fileToCopy = uploadableFile.getFile();
-                File dstDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), getFolderName(context));
-                if (!dstDir.exists()) {
-                    dstDir.mkdirs();
-                }
-
-                String[] filenameSplit = fileToCopy.getName().split("\\.");
-                String extension = "." + filenameSplit[filenameSplit.length - 1];
-                String filename = String.format("IMG_%s_%d.%s", new SimpleDateFormat("yyyyMMdd_HHmmss").format(Calendar.getInstance().getTime()), i, extension);
-
-                File dstFile = new File(dstDir, filename);
-                try {
-                    dstFile.createNewFile();
-                    copyFile(fileToCopy, dstFile);
-                    copiedFiles.add(dstFile);
-                } catch (IOException e) {
-                    e.printStackTrace();
-                }
-                i++;
-            }
-            scanCopiedImages(context, copiedFiles);
-        }).run();
-    }
-
-    /**
-     * singleFileList.
-     * converts a single uploadableFile to list of uploadableFile.
-     * @param file uploadable file
-     * @return
-     */
-    static List<UploadableFile> singleFileList(UploadableFile file) {
-        List<UploadableFile> list = new ArrayList<>();
-        list.add(file);
-        return list;
-    }
-
-    /**
-     * ScanCopiedImages
-     * Scan copied images metadata using media scanner.
-     * @param context
-     * @param copiedImages copied images list.
-     */
-    static void scanCopiedImages(Context context, List<File> copiedImages) {
-        String[] paths = new String[copiedImages.size()];
-        for (int i = 0; i < copiedImages.size(); i++) {
-            paths[i] = copiedImages.get(i).toString();
-        }
-
-        MediaScannerConnection.scanFile(context,
-                paths, null,
-                (path, uri) -> {
-                    Timber.d("Scanned " + path + ":");
-                    Timber.d("-> uri=%s", uri);
-                });
-    }
-
-    /**
-     * pickedExistingPicture
-     * convert the image into uploadable file.
-     * @param photoUri Uri of the image.
-     * @return Uploadable file ready for tag redaction.
-     */
-    public static UploadableFile pickedExistingPicture(@NonNull Context context, Uri photoUri) throws IOException, SecurityException {// SecurityException for those file providers who share URI but forget to grant necessary permissions
-        File directory = tempImageDirectory(context);
-        File photoFile = new File(directory, UUID.randomUUID().toString() + "." + getMimeType(context, photoUri));
-        if (photoFile.createNewFile()) {
-            try (InputStream pictureInputStream = context.getContentResolver().openInputStream(photoUri)) {
-                writeToFile(pictureInputStream, photoFile);
-            }
-        } else {
-            throw new IOException("could not create photoFile to write upon");
-        }
-        return new UploadableFile(photoUri, photoFile);
-    }
-
-    /**
-     * getCameraPictureLocation
-     */
-    static File getCameraPicturesLocation(@NonNull Context context) throws IOException {
-        File dir = tempImageDirectory(context);
-        return File.createTempFile(UUID.randomUUID().toString(), ".jpg", dir);
-    }
-
-    /**
-     * To find out the extension of required object in given uri
-     * Solution by http://stackoverflow.com/a/36514823/1171484
-     */
-    private static String getMimeType(@NonNull Context context, @NonNull Uri uri) {
-        String extension;
-
-        //Check uri format to avoid null
-        if (uri.getScheme().equals(ContentResolver.SCHEME_CONTENT)) {
-            //If scheme is a content
-            extension = MimeTypeMapWrapper.getExtensionFromMimeType(context.getContentResolver().getType(uri));
-        } else {
-            //If scheme is a File
-            //This will replace white spaces with %20 and also other special characters. This will avoid returning null values on file name with spaces and special characters.
-            extension = MimeTypeMap.getFileExtensionFromUrl(Uri.fromFile(new File(uri.getPath())).toString());
-
-        }
-
-        return extension;
-    }
-
-    /**
-     * GetUriToFile
-     * @param file get uri of file
-     * @return uri of requested file.
-     */
-    static Uri getUriToFile(@NonNull Context context, @NonNull File file) {
-        String packageName = context.getApplicationContext().getPackageName();
-        String authority = packageName + ".provider";
-        return FileProvider.getUriForFile(context, authority, file);
-    }
-
-}

app/src/main/java/fr/free/nrw/commons/filepicker/PickedFiles.kt

@@ -0,0 +1,195 @@
+package fr.free.nrw.commons.filepicker
+
+import android.content.ContentResolver
+import android.content.Context
+import android.media.MediaScannerConnection
+import android.net.Uri
+import android.os.Environment
+import android.webkit.MimeTypeMap
+import androidx.core.content.FileProvider
+import fr.free.nrw.commons.filepicker.Constants.Companion.DEFAULT_FOLDER_NAME
+import timber.log.Timber
+import java.io.File
+import java.io.FileInputStream
+import java.io.FileOutputStream
+import java.io.IOException
+import java.io.InputStream
+import java.text.SimpleDateFormat
+import java.util.Date
+import java.util.Locale
+import java.util.UUID
+
+
+/**
+ * PickedFiles.
+ * Process the upload items.
+ */
+object PickedFiles : Constants {
+
+    /**
+     * Get Folder Name
+     * @return default application folder name.
+     */
+    @JvmStatic
+    private fun getFolderName(context: Context): String {
+        return FilePicker.configuration(context).getFolderName()
+    }
+
+    /**
+     * tempImageDirectory
+     * @return temporary image directory to copy and perform exif changes.
+     */
+    @JvmStatic
+    private fun tempImageDirectory(context: Context): File {
+        val privateTempDir = File(context.cacheDir, DEFAULT_FOLDER_NAME)
+        if (!privateTempDir.exists()) privateTempDir.mkdirs()
+        return privateTempDir
+    }
+
+    /**
+     * writeToFile
+     * Writes inputStream data to the destination file.
+     */
+    @JvmStatic
+    @Throws(IOException::class)
+    private fun writeToFile(inputStream: InputStream, file: File) {
+        inputStream.use { input ->
+            FileOutputStream(file).use { output ->
+                val buffer = ByteArray(1024)
+                var length: Int
+                while (input.read(buffer).also { length = it } > 0) {
+                    output.write(buffer, 0, length)
+                }
+            }
+        }
+    }
+
+    /**
+     * Copy file function.
+     * Copies source file to destination file.
+     */
+    @Throws(IOException::class)
+    @JvmStatic
+    private fun copyFile(src: File, dst: File) {
+        FileInputStream(src).use { inputStream ->
+            writeToFile(inputStream, dst)
+        }
+    }
+
+    /**
+     * Copy files in separate thread.
+     * Copies all the uploadable files to the temp image folder on background thread.
+     */
+    @JvmStatic
+    fun copyFilesInSeparateThread(context: Context, filesToCopy: List<UploadableFile>) {
+        Thread {
+            val copiedFiles = mutableListOf<File>()
+            var index = 1
+            filesToCopy.forEach { uploadableFile ->
+                val fileToCopy = uploadableFile.file
+                val dstDir = File(
+                    Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
+                    getFolderName(context)
+                )
+                if (!dstDir.exists()) dstDir.mkdirs()
+
+                val filenameSplit = fileToCopy.name.split(".")
+                val extension = ".${filenameSplit.last()}"
+                val filename = "IMG_${SimpleDateFormat(
+                    "yyyyMMdd_HHmmss",
+                    Locale.getDefault()).format(Date())}_$index$extension"
+                val dstFile = File(dstDir, filename)
+
+                try {
+                    dstFile.createNewFile()
+                    copyFile(fileToCopy, dstFile)
+                    copiedFiles.add(dstFile)
+                } catch (e: IOException) {
+                    e.printStackTrace()
+                }
+                index++
+            }
+            scanCopiedImages(context, copiedFiles)
+        }.start()
+    }
+
+    /**
+     * singleFileList
+     * Converts a single uploadableFile to list of uploadableFile.
+     */
+    @JvmStatic
+    fun singleFileList(file: UploadableFile): List<UploadableFile> {
+        return listOf(file)
+    }
+
+    /**
+     * ScanCopiedImages
+     * Scans copied images metadata using media scanner.
+     */
+    @JvmStatic
+    fun scanCopiedImages(context: Context, copiedImages: List<File>) {
+        val paths = copiedImages.map { it.toString() }.toTypedArray()
+        MediaScannerConnection.scanFile(context, paths, null) { path, uri ->
+            Timber.d("Scanned $path:")
+            Timber.d("-> uri=$uri")
+        }
+    }
+
+    /**
+     * pickedExistingPicture
+     * Convert the image into uploadable file.
+     */
+    @Throws(IOException::class, SecurityException::class)
+    @JvmStatic
+    fun pickedExistingPicture(context: Context, photoUri: Uri): UploadableFile {
+        val directory = tempImageDirectory(context)
+        val mimeType = getMimeType(context, photoUri)
+        val photoFile = File(directory, "${UUID.randomUUID()}.$mimeType")
+
+        if (photoFile.createNewFile()) {
+            context.contentResolver.openInputStream(photoUri)?.use { inputStream ->
+                writeToFile(inputStream, photoFile)
+            }
+        } else {
+            throw IOException("Could not create photoFile to write upon")
+        }
+        return UploadableFile(photoUri, photoFile)
+    }
+
+    /**
+     * getCameraPictureLocation
+     */
+    @Throws(IOException::class)
+    @JvmStatic
+    fun getCameraPicturesLocation(context: Context): File {
+        val dir = tempImageDirectory(context)
+        return File.createTempFile(UUID.randomUUID().toString(), ".jpg", dir)
+    }
+
+    /**
+     * To find out the extension of the required object in a given uri
+     */
+    @JvmStatic
+    private fun getMimeType(context: Context, uri: Uri): String {
+        return if (uri.scheme == ContentResolver.SCHEME_CONTENT) {
+            context.contentResolver.getType(uri)
+                ?.let { MimeTypeMapWrapper.getExtensionFromMimeType(it) }
+        } else {
+            MimeTypeMap.getFileExtensionFromUrl(
+                Uri.fromFile(uri.path?.let { File(it) }).toString()
+            )
+        } ?: "jpg" // Default to jpg if unable to determine type
+    }
+
+    /**
+     * GetUriToFile
+     * @param file get uri of file
+     * @return uri of requested file.
+     */
+    @JvmStatic
+    fun getUriToFile(context: Context, file: File): Uri {
+        val packageName = context.applicationContext.packageName
+        val authority = "$packageName.provider"
+        return FileProvider.getUriForFile(context, authority, file)
+    }
+}

app/src/main/java/fr/free/nrw/commons/filepicker/UploadableFile.java

@@ -1,213 +0,0 @@
-package fr.free.nrw.commons.filepicker;
-
-import android.annotation.SuppressLint;
-import android.content.Context;
-import android.database.Cursor;
-import android.net.Uri;
-import android.os.Parcel;
-import android.os.Parcelable;
-
-import androidx.annotation.Nullable;
-import androidx.exifinterface.media.ExifInterface;
-
-import fr.free.nrw.commons.upload.FileUtils;
-import java.io.File;
-import java.io.IOException;
-import java.util.Date;
-import timber.log.Timber;
-
-public class UploadableFile implements Parcelable {
-    public static final Creator<UploadableFile> CREATOR = new Creator<UploadableFile>() {
-        @Override
-        public UploadableFile createFromParcel(Parcel in) {
-            return new UploadableFile(in);
-        }
-
-        @Override
-        public UploadableFile[] newArray(int size) {
-            return new UploadableFile[size];
-        }
-    };
-
-    private final Uri contentUri;
-    private final File file;
-
-    public UploadableFile(Uri contentUri, File file) {
-        this.contentUri = contentUri;
-        this.file = file;
-    }
-
-    public UploadableFile(File file) {
-        this.file = file;
-        this.contentUri = Uri.fromFile(new File(file.getPath()));
-    }
-
-    public UploadableFile(Parcel in) {
-        this.contentUri = in.readParcelable(Uri.class.getClassLoader());
-        file = (File) in.readSerializable();
-    }
-
-    public Uri getContentUri() {
-        return contentUri;
-    }
-
-    public File getFile() {
-        return file;
-    }
-
-    public String getFilePath() {
-        return file.getPath();
-    }
-
-    public Uri getMediaUri() {
-        return Uri.parse(getFilePath());
-    }
-
-    public String getMimeType(Context context) {
-        return FileUtils.getMimeType(context, getMediaUri());
-    }
-
-    @Override
-    public int describeContents() {
-        return 0;
-    }
-
-    /**
-     * First try to get the file creation date from EXIF else fall back to CP
-     * @param context
-     * @return
-     */
-    @Nullable
-    public DateTimeWithSource getFileCreatedDate(Context context) {
-        DateTimeWithSource dateTimeFromExif = getDateTimeFromExif();
-        if (dateTimeFromExif == null) {
-            return getFileCreatedDateFromCP(context);
-        } else {
-            return dateTimeFromExif;
-        }
-    }
-
-    /**
-     * Get filePath creation date from uri from all possible content providers
-     *
-     * @return
-     */
-    private DateTimeWithSource getFileCreatedDateFromCP(Context context) {
-        try {
-            Cursor cursor = context.getContentResolver().query(contentUri, null, null, null, null);
-            if (cursor == null) {
-                return null;//Could not fetch last_modified
-            }
-            //Content provider contracts for opening gallery from the app and that by sharing from gallery from outside are different and we need to handle both the cases
-            int lastModifiedColumnIndex = cursor.getColumnIndex("last_modified");//If gallery is opened from in app
-            if (lastModifiedColumnIndex == -1) {
-                lastModifiedColumnIndex = cursor.getColumnIndex("datetaken");
-            }
-            //If both the content providers do not give the data, lets leave it to Jesus
-            if (lastModifiedColumnIndex == -1) {
-                cursor.close();
-                return null;
-            }
-            cursor.moveToFirst();
-            return new DateTimeWithSource(cursor.getLong(lastModifiedColumnIndex), DateTimeWithSource.CP_SOURCE);
-        } catch (Exception e) {
-            return null;////Could not fetch last_modified
-        }
-    }
-
-    /**
-     * Indicate whether the EXIF contains the location (both latitude and longitude).
-     *
-     * @return whether the location exists for the file's EXIF
-     */
-    public boolean hasLocation() {
-        try {
-            ExifInterface exif = new ExifInterface(file.getAbsolutePath());
-            final String latitude = exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE);
-            final String longitude = exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE);
-            return latitude != null && longitude != null;
-        } catch (IOException | NumberFormatException | IndexOutOfBoundsException e) {
-            Timber.tag("UploadableFile");
-            Timber.d(e);
-        }
-        return false;
-    }
-
-    /**
-     * Get filePath creation date from uri from EXIF
-     *
-     * @return
-     */
-    private DateTimeWithSource getDateTimeFromExif() {
-        try {
-            ExifInterface exif = new ExifInterface(file.getAbsolutePath());
-            // TAG_DATETIME returns the last edited date, we need TAG_DATETIME_ORIGINAL for creation date
-            // See issue https://github.com/commons-app/apps-android-commons/issues/1971
-            String dateTimeSubString = exif.getAttribute(ExifInterface.TAG_DATETIME_ORIGINAL);
-            if (dateTimeSubString!=null) { //getAttribute may return null
-                String year = dateTimeSubString.substring(0,4);
-                String month = dateTimeSubString.substring(5,7);
-                String day = dateTimeSubString.substring(8,10);
-                // This date is stored as a string (not as a date), the rason is we don't want to include timezones
-                String dateCreatedString = String.format("%04d-%02d-%02d", Integer.parseInt(year), Integer.parseInt(month), Integer.parseInt(day));
-                if (dateCreatedString.length() == 10) { //yyyy-MM-dd format of date is expected
-                    @SuppressLint("RestrictedApi") Long dateTime = exif.getDateTimeOriginal();
-                    if(dateTime != null){
-                        Date date = new Date(dateTime);
-                        return new DateTimeWithSource(date, dateCreatedString, DateTimeWithSource.EXIF_SOURCE);
-                    }
-                }
-            }
-        } catch (IOException | NumberFormatException | IndexOutOfBoundsException e) {
-            Timber.tag("UploadableFile");
-            Timber.d(e);
-        }
-        return null;
-    }
-
-    @Override
-    public void writeToParcel(Parcel parcel, int i) {
-        parcel.writeParcelable(contentUri, 0);
-        parcel.writeSerializable(file);
-    }
-
-    /**
-     * This class contains the epochDate along with the source from which it was extracted
-     */
-    public class DateTimeWithSource {
-        public static final String CP_SOURCE = "contentProvider";
-        public static final String EXIF_SOURCE = "exif";
-
-        private final long epochDate;
-        private String dateString; // this does not includes timezone information
-        private final String source;
-
-        public DateTimeWithSource(long epochDate, String source) {
-            this.epochDate = epochDate;
-            this.source = source;
-        }
-
-        public DateTimeWithSource(Date date, String source) {
-            this.epochDate = date.getTime();
-            this.source = source;
-        }
-
-        public DateTimeWithSource(Date date, String dateString, String source) {
-            this.epochDate = date.getTime();
-            this.dateString = dateString;
-            this.source = source;
-        }
-
-        public long getEpochDate() {
-            return epochDate;
-        }
-
-        public String getDateString() {
-            return dateString;
-        }
-
-        public String getSource() {
-            return source;
-        }
-    }
-}

app/src/main/java/fr/free/nrw/commons/filepicker/UploadableFile.kt

@@ -0,0 +1,168 @@
+package fr.free.nrw.commons.filepicker
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.database.Cursor
+import android.net.Uri
+import android.os.Parcel
+import android.os.Parcelable
+
+import androidx.exifinterface.media.ExifInterface
+
+import fr.free.nrw.commons.upload.FileUtils
+import java.io.File
+import java.io.IOException
+import java.util.Date
+import timber.log.Timber
+
+class UploadableFile : Parcelable {
+
+    val contentUri: Uri
+    val file: File
+
+    constructor(contentUri: Uri, file: File) {
+        this.contentUri = contentUri
+        this.file = file
+    }
+
+    constructor(file: File) {
+        this.file = file
+        this.contentUri = Uri.fromFile(File(file.path))
+    }
+
+    private constructor(parcel: Parcel) {
+        contentUri = parcel.readParcelable(Uri::class.java.classLoader)!!
+        file = parcel.readSerializable() as File
+    }
+
+    fun getFilePath(): String {
+        return file.path
+    }
+
+    fun getMediaUri(): Uri {
+        return Uri.parse(getFilePath())
+    }
+
+    fun getMimeType(context: Context): String? {
+        return FileUtils.getMimeType(context, getMediaUri())
+    }
+
+    override fun describeContents(): Int = 0
+
+    /**
+     * First try to get the file creation date from EXIF, else fall back to Content Provider (CP)
+     */
+    fun getFileCreatedDate(context: Context): DateTimeWithSource? {
+        return getDateTimeFromExif() ?: getFileCreatedDateFromCP(context)
+    }
+
+    /**
+     * Get filePath creation date from URI using all possible content providers
+     */
+    private fun getFileCreatedDateFromCP(context: Context): DateTimeWithSource? {
+        return try {
+            val cursor: Cursor? = context.contentResolver.query(contentUri, null, null, null, null)
+            cursor?.use {
+                val lastModifiedColumnIndex = cursor
+                    .getColumnIndex(
+                        "last_modified"
+                    ).takeIf { it != -1 }
+                    ?: cursor.getColumnIndex("datetaken")
+                if (lastModifiedColumnIndex == -1) return null // No valid column found
+                cursor.moveToFirst()
+                DateTimeWithSource(
+                    cursor.getLong(
+                        lastModifiedColumnIndex
+                    ), DateTimeWithSource.CP_SOURCE)
+            }
+        } catch (e: Exception) {
+            Timber.tag("UploadableFile").d(e)
+            null
+        }
+    }
+
+    /**
+     * Indicates whether the EXIF contains the location (both latitude and longitude).
+     */
+    fun hasLocation(): Boolean {
+        return try {
+            val exif = ExifInterface(file.absolutePath)
+            val latitude = exif.getAttribute(ExifInterface.TAG_GPS_LATITUDE)
+            val longitude = exif.getAttribute(ExifInterface.TAG_GPS_LONGITUDE)
+            latitude != null && longitude != null
+        } catch (e: IOException) {
+            Timber.tag("UploadableFile").d(e)
+            false
+        }
+    }
+
+    /**
+     * Get filePath creation date from URI using EXIF data
+     */
+    private fun getDateTimeFromExif(): DateTimeWithSource? {
+        return try {
+            val exif = ExifInterface(file.absolutePath)
+            val dateTimeSubString = exif.getAttribute(ExifInterface.TAG_DATETIME_ORIGINAL)
+            if (dateTimeSubString != null) {
+                val year = dateTimeSubString.substring(0, 4).toInt()
+                val month = dateTimeSubString.substring(5, 7).toInt()
+                val day = dateTimeSubString.substring(8, 10).toInt()
+                val dateCreatedString = "%04d-%02d-%02d".format(year, month, day)
+                if (dateCreatedString.length == 10) {
+                    @SuppressLint("RestrictedApi")
+                    val dateTime = exif.dateTimeOriginal
+                    if (dateTime != null) {
+                        val date = Date(dateTime)
+                        return DateTimeWithSource(date, dateCreatedString, DateTimeWithSource.EXIF_SOURCE)
+                    }
+                }
+            }
+            null
+        } catch (e: Exception) {
+            Timber.tag("UploadableFile").d(e)
+            null
+        }
+    }
+
+    override fun writeToParcel(parcel: Parcel, flags: Int) {
+        parcel.writeParcelable(contentUri, flags)
+        parcel.writeSerializable(file)
+    }
+
+    class DateTimeWithSource {
+        companion object {
+            const val CP_SOURCE = "contentProvider"
+            const val EXIF_SOURCE = "exif"
+        }
+
+        val epochDate: Long
+        var dateString: String? = null
+        val source: String
+
+        constructor(epochDate: Long, source: String) {
+            this.epochDate = epochDate
+            this.source = source
+        }
+
+        constructor(date: Date, source: String) {
+            epochDate = date.time
+            this.source = source
+        }
+
+        constructor(date: Date, dateString: String, source: String) {
+            epochDate = date.time
+            this.dateString = dateString
+            this.source = source
+        }
+    }
+
+    companion object CREATOR : Parcelable.Creator<UploadableFile> {
+        override fun createFromParcel(parcel: Parcel): UploadableFile {
+            return UploadableFile(parcel)
+        }
+
+        override fun newArray(size: Int): Array<UploadableFile?> {
+            return arrayOfNulls(size)
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/fileusages/FileUsagesResponse.kt

@@ -0,0 +1,35 @@
+package fr.free.nrw.commons.fileusages
+
+import com.google.gson.annotations.SerializedName
+
+/**
+ * Show where file is being used on Commons and oher wikis.
+ */
+data class FileUsagesResponse(
+    @SerializedName("continue") val continueResponse: CommonsContinue?,
+    @SerializedName("batchcomplete") val batchComplete: Boolean,
+    @SerializedName("query") val query: Query,
+)
+
+data class CommonsContinue(
+    @SerializedName("fucontinue") val fuContinue: String,
+    @SerializedName("continue") val continueKey: String
+)
+
+data class Query(
+    @SerializedName("pages") val pages: List<Page>
+)
+
+data class Page(
+    @SerializedName("pageid") val pageId: Int,
+    @SerializedName("ns") val nameSpace: Int,
+    @SerializedName("title") val title: String,
+    @SerializedName("fileusage") val fileUsage: List<FileUsage>
+)
+
+data class FileUsage(
+    @SerializedName("pageid") val pageId: Int,
+    @SerializedName("ns") val nameSpace: Int,
+    @SerializedName("title") val title: String,
+    @SerializedName("redirect") val redirect: Boolean
+)

app/src/main/java/fr/free/nrw/commons/fileusages/FileUsagesUiModel.kt

@@ -0,0 +1,18 @@
+package fr.free.nrw.commons.fileusages
+
+/**
+ * Show where file is being used on Commons and oher wikis.
+ */
+data class FileUsagesUiModel(
+    val title: String,
+    val link: String?
+)
+
+fun FileUsage.toUiModel(): FileUsagesUiModel {
+    return FileUsagesUiModel(title = title, link = "https://commons.wikimedia.org/wiki/$title")
+}
+
+fun GlobalFileUsage.toUiModel(): FileUsagesUiModel {
+    // link is associated with sub items under wiki group (which is not used ATM)
+    return FileUsagesUiModel(title = wiki, link = null)
+}

app/src/main/java/fr/free/nrw/commons/fileusages/GlobalFileUsagesResponse.kt

@@ -0,0 +1,34 @@
+package fr.free.nrw.commons.fileusages
+
+import com.google.gson.annotations.SerializedName
+
+/**
+ * Show where file is being used on Commons and oher wikis.
+ */
+data class GlobalFileUsagesResponse(
+    @SerializedName("continue") val continueResponse: GlobalContinue?,
+    @SerializedName("batchcomplete") val batchComplete: Boolean,
+    @SerializedName("query") val query: GlobalQuery,
+)
+
+data class GlobalContinue(
+    @SerializedName("gucontinue") val guContinue: String,
+    @SerializedName("continue") val continueKey: String
+)
+
+data class GlobalQuery(
+    @SerializedName("pages") val pages: List<GlobalPage>
+)
+
+data class GlobalPage(
+    @SerializedName("pageid") val pageId: Int,
+    @SerializedName("ns") val nameSpace: Int,
+    @SerializedName("title") val title: String,
+    @SerializedName("globalusage") val fileUsage: List<GlobalFileUsage>
+)
+
+data class GlobalFileUsage(
+    @SerializedName("title") val title: String,
+    @SerializedName("wiki") val wiki: String,
+    @SerializedName("url") val url: String
+)

app/src/main/java/fr/free/nrw/commons/location/LatLng.kt

@@ -41,6 +41,13 @@ data class LatLng(
      * Accepts a non-null [Location] and converts it to a [LatLng].
      */
     companion object {
+        fun latLongOrNull(latitude: String?, longitude: String?): LatLng? =
+            if (!latitude.isNullOrBlank() && !longitude.isNullOrBlank()) {
+                LatLng(latitude.toDouble(), longitude.toDouble(), 0.0f)
+            } else {
+                null
+            }
+
         /**
          * gets the latitude and longitude of a given non-null location
          * @param location the non-null location of the user

app/src/main/java/fr/free/nrw/commons/media/MediaDetailViewModel.kt

@@ -0,0 +1,116 @@
+package fr.free.nrw.commons.media
+
+import android.content.Context
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import androidx.lifecycle.viewModelScope
+import fr.free.nrw.commons.R
+import fr.free.nrw.commons.fileusages.FileUsagesUiModel
+import fr.free.nrw.commons.fileusages.toUiModel
+import fr.free.nrw.commons.mwapi.OkHttpJsonApiClient
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.update
+import kotlinx.coroutines.launch
+import timber.log.Timber
+import javax.inject.Inject
+
+/**
+ * Show where file is being used on Commons and oher wikis.
+ */
+class MediaDetailViewModel(
+    private val applicationContext: Context,
+    private val okHttpJsonApiClient: OkHttpJsonApiClient
+) :
+    ViewModel() {
+
+    private val _commonsContainerState =
+        MutableStateFlow<FileUsagesContainerState>(FileUsagesContainerState.Initial)
+    val commonsContainerState = _commonsContainerState.asStateFlow()
+
+    private val _globalContainerState =
+        MutableStateFlow<FileUsagesContainerState>(FileUsagesContainerState.Initial)
+    val globalContainerState = _globalContainerState.asStateFlow()
+
+    fun loadFileUsagesCommons(fileName: String) {
+
+        viewModelScope.launch {
+
+            _commonsContainerState.update { FileUsagesContainerState.Loading }
+
+            try {
+                val result =
+                    okHttpJsonApiClient.getFileUsagesOnCommons(fileName, 10)
+
+                val data = result?.query?.pages?.first()?.fileUsage?.map { it.toUiModel() }
+
+                _commonsContainerState.update { FileUsagesContainerState.Success(data = data) }
+
+            } catch (e: Exception) {
+
+                _commonsContainerState.update {
+                    FileUsagesContainerState.Error(
+                        errorMessage = applicationContext.getString(
+                            R.string.error_while_loading
+                        )
+                    )
+                }
+
+                Timber.e(e, javaClass.simpleName)
+
+            }
+        }
+
+    }
+
+    fun loadGlobalFileUsages(fileName: String) {
+
+        viewModelScope.launch {
+
+            _globalContainerState.update { FileUsagesContainerState.Loading }
+
+            try {
+                val result = okHttpJsonApiClient.getGlobalFileUsages(fileName, 10)
+
+                val data = result?.query?.pages?.first()?.fileUsage?.map { it.toUiModel() }
+
+                _globalContainerState.update { FileUsagesContainerState.Success(data = data) }
+
+            } catch (e: Exception) {
+                _globalContainerState.update {
+                    FileUsagesContainerState.Error(
+                        errorMessage = applicationContext.getString(
+                            R.string.error_while_loading
+                        )
+                    )
+                }
+
+                Timber.e(e, javaClass.simpleName)
+
+            }
+        }
+
+    }
+
+    sealed class FileUsagesContainerState {
+        object Initial : FileUsagesContainerState()
+        object Loading : FileUsagesContainerState()
+        data class Success(val data: List<FileUsagesUiModel>?) : FileUsagesContainerState()
+        data class Error(val errorMessage: String) : FileUsagesContainerState()
+    }
+
+    class MediaDetailViewModelProviderFactory
+    @Inject constructor(
+        private val okHttpJsonApiClient: OkHttpJsonApiClient,
+        private val applicationContext: Context
+    ) :
+        ViewModelProvider.Factory {
+        override fun <T : ViewModel> create(modelClass: Class<T>): T {
+            if (modelClass.isAssignableFrom(MediaDetailViewModel::class.java)) {
+                @Suppress("UNCHECKED_CAST")
+                return MediaDetailViewModel(applicationContext, okHttpJsonApiClient) as T
+            }
+            throw IllegalArgumentException("Unknown ViewModel class")
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/mwapi/CategoryApi.java

@@ -1,99 +0,0 @@
-package fr.free.nrw.commons.mwapi;
-
-import static fr.free.nrw.commons.category.CategoryClientKt.CATEGORY_PREFIX;
-
-import com.google.gson.Gson;
-import fr.free.nrw.commons.BuildConfig;
-import fr.free.nrw.commons.category.CategoryItem;
-import fr.free.nrw.commons.wikidata.mwapi.MwQueryPage;
-import fr.free.nrw.commons.wikidata.mwapi.MwQueryResponse;
-import io.reactivex.Single;
-import java.util.ArrayList;
-import java.util.Collections;
-import java.util.LinkedHashSet;
-import java.util.List;
-import java.util.Set;
-import javax.inject.Inject;
-import okhttp3.HttpUrl;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
-import okhttp3.Response;
-import okhttp3.ResponseBody;
-import timber.log.Timber;
-
-/**
- * Uses the OkHttp library to implement calls to the Commons MediaWiki API to match GPS coordinates
- * with nearby Commons categories. Parses the results using GSON to obtain a list of relevant
- * categories.  Note: that caller is responsible for executing the request() method on a background
- * thread.
- */
-public class CategoryApi {
-
-    private final OkHttpClient okHttpClient;
-    private final Gson gson;
-
-    @Inject
-    public CategoryApi(final OkHttpClient okHttpClient, final Gson gson) {
-        this.okHttpClient = okHttpClient;
-        this.gson = gson;
-    }
-
-    public Single<List<CategoryItem>> request(String coords) {
-        return Single.fromCallable(() -> {
-            HttpUrl apiUrl = buildUrl(coords);
-            Timber.d("URL: %s", apiUrl.toString());
-
-            Request request = new Request.Builder().get().url(apiUrl).build();
-            Response response = okHttpClient.newCall(request).execute();
-            ResponseBody body = response.body();
-            if (body == null) {
-                return Collections.emptyList();
-            }
-
-            MwQueryResponse apiResponse = gson.fromJson(body.charStream(), MwQueryResponse.class);
-            Set<CategoryItem> categories = new LinkedHashSet<>();
-            if (apiResponse != null && apiResponse.query() != null && apiResponse.query().pages() != null) {
-                for (MwQueryPage page : apiResponse.query().pages()) {
-                    if (page.categories() != null) {
-                        for (MwQueryPage.Category category : page.categories()) {
-                            categories.add(new CategoryItem(category.title().replace(CATEGORY_PREFIX, ""), "", "", false));
-                        }
-                    }
-                }
-            }
-            return new ArrayList<>(categories);
-        });
-    }
-
-    /**
-     * Builds URL with image coords for MediaWiki API calls
-     * Example URL: https://commons.wikimedia.org/w/api.php?action=query&prop=categories|coordinates|pageprops&format=json&clshow=!hidden&coprop=type|name|dim|country|region|globe&codistancefrompoint=38.11386944444445|13.356263888888888&generator=geosearch&redirects=&ggscoord=38.11386944444445|1.356263888888888&ggsradius=100&ggslimit=10&ggsnamespace=6&ggsprop=type|name|dim|country|region|globe&ggsprimary=all&formatversion=2
-     *
-     * @param coords Coordinates to build query with
-     * @return URL for API query
-     */
-    private HttpUrl buildUrl(final String coords) {
-        return HttpUrl
-                .parse(BuildConfig.WIKIMEDIA_API_HOST)
-                .newBuilder()
-                .addQueryParameter("action", "query")
-                .addQueryParameter("prop", "categories|coordinates|pageprops")
-                .addQueryParameter("format", "json")
-                .addQueryParameter("clshow", "!hidden")
-                .addQueryParameter("coprop", "type|name|dim|country|region|globe")
-                .addQueryParameter("codistancefrompoint", coords)
-                .addQueryParameter("generator", "geosearch")
-                .addQueryParameter("ggscoord", coords)
-                .addQueryParameter("ggsradius", "10000")
-                .addQueryParameter("ggslimit", "10")
-                .addQueryParameter("ggsnamespace", "6")
-                .addQueryParameter("ggsprop", "type|name|dim|country|region|globe")
-                .addQueryParameter("ggsprimary", "all")
-                .addQueryParameter("formatversion", "2")
-                .build();
-    }
-
-}
-
-
-

app/src/main/java/fr/free/nrw/commons/mwapi/CategoryApi.kt

@@ -0,0 +1,83 @@
+package fr.free.nrw.commons.mwapi
+
+import com.google.gson.Gson
+import fr.free.nrw.commons.BuildConfig
+import fr.free.nrw.commons.category.CATEGORY_PREFIX
+import fr.free.nrw.commons.category.CategoryItem
+import fr.free.nrw.commons.wikidata.mwapi.MwQueryResponse
+import io.reactivex.Single
+import okhttp3.HttpUrl
+import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import timber.log.Timber
+import javax.inject.Inject
+
+/**
+ * Uses the OkHttp library to implement calls to the Commons MediaWiki API to match GPS coordinates
+ * with nearby Commons categories. Parses the results using GSON to obtain a list of relevant
+ * categories.  Note: that caller is responsible for executing the request() method on a background
+ * thread.
+ */
+class CategoryApi @Inject constructor(
+    private val okHttpClient: OkHttpClient,
+    private val gson: Gson
+) {
+    private val apiUrl : HttpUrl by lazy { BuildConfig.WIKIMEDIA_API_HOST.toHttpUrlOrNull()!! }
+
+    fun request(coords: String): Single<List<CategoryItem>> = Single.fromCallable {
+        val apiUrl = buildUrl(coords)
+        Timber.d("URL: %s", apiUrl.toString())
+
+        val request: Request = Request.Builder().get().url(apiUrl).build()
+        val response = okHttpClient.newCall(request).execute()
+        val body = response.body ?: return@fromCallable emptyList<CategoryItem>()
+
+        val apiResponse = gson.fromJson(body.charStream(), MwQueryResponse::class.java)
+        val categories: MutableSet<CategoryItem> = mutableSetOf()
+        if (apiResponse?.query() != null && apiResponse.query()!!.pages() != null) {
+            for (page in apiResponse.query()!!.pages()!!) {
+                if (page.categories() != null) {
+                    for (category in page.categories()!!) {
+                        categories.add(
+                            CategoryItem(
+                                name = category.title().replace(CATEGORY_PREFIX, ""),
+                                description = "",
+                                thumbnail = "",
+                                isSelected = false
+                            )
+                        )
+                    }
+                }
+            }
+        }
+        ArrayList<CategoryItem>(categories)
+    }
+
+    /**
+     * Builds URL with image coords for MediaWiki API calls
+     * Example URL: https://commons.wikimedia.org/w/api.php?action=query&prop=categories|coordinates|pageprops&format=json&clshow=!hidden&coprop=type|name|dim|country|region|globe&codistancefrompoint=38.11386944444445|13.356263888888888&generator=geosearch&redirects=&ggscoord=38.11386944444445|1.356263888888888&ggsradius=100&ggslimit=10&ggsnamespace=6&ggsprop=type|name|dim|country|region|globe&ggsprimary=all&formatversion=2
+     *
+     * @param coords Coordinates to build query with
+     * @return URL for API query
+     */
+    private fun buildUrl(coords: String): HttpUrl = apiUrl.newBuilder()
+        .addQueryParameter("action", "query")
+        .addQueryParameter("prop", "categories|coordinates|pageprops")
+        .addQueryParameter("format", "json")
+        .addQueryParameter("clshow", "!hidden")
+        .addQueryParameter("coprop", "type|name|dim|country|region|globe")
+        .addQueryParameter("codistancefrompoint", coords)
+        .addQueryParameter("generator", "geosearch")
+        .addQueryParameter("ggscoord", coords)
+        .addQueryParameter("ggsradius", "10000")
+        .addQueryParameter("ggslimit", "10")
+        .addQueryParameter("ggsnamespace", "6")
+        .addQueryParameter("ggsprop", "type|name|dim|country|region|globe")
+        .addQueryParameter("ggsprimary", "all")
+        .addQueryParameter("formatversion", "2")
+        .build()
+}
+
+
+

app/src/main/java/fr/free/nrw/commons/mwapi/OkHttpJsonApiClient.java

@@ -1,677 +0,0 @@
-package fr.free.nrw.commons.mwapi;
-
-import static fr.free.nrw.commons.profile.leaderboard.LeaderboardConstants.LEADERBOARD_END_POINT;
-import static fr.free.nrw.commons.profile.leaderboard.LeaderboardConstants.UPDATE_AVATAR_END_POINT;
-
-import android.text.TextUtils;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import com.google.gson.Gson;
-import fr.free.nrw.commons.campaigns.CampaignResponseDTO;
-import fr.free.nrw.commons.explore.depictions.DepictsClient;
-import fr.free.nrw.commons.location.LatLng;
-import fr.free.nrw.commons.nearby.Place;
-import fr.free.nrw.commons.nearby.model.ItemsClass;
-import fr.free.nrw.commons.nearby.model.NearbyResponse;
-import fr.free.nrw.commons.nearby.model.NearbyResultItem;
-import fr.free.nrw.commons.nearby.model.PlaceBindings;
-import fr.free.nrw.commons.profile.achievements.FeaturedImages;
-import fr.free.nrw.commons.profile.achievements.FeedbackResponse;
-import fr.free.nrw.commons.profile.leaderboard.LeaderboardResponse;
-import fr.free.nrw.commons.profile.leaderboard.UpdateAvatarResponse;
-import fr.free.nrw.commons.upload.FileUtils;
-import fr.free.nrw.commons.upload.structure.depictions.DepictedItem;
-import fr.free.nrw.commons.utils.ConfigUtils;
-import fr.free.nrw.commons.wikidata.model.GetWikidataEditCountResponse;
-import io.reactivex.Observable;
-import io.reactivex.Single;
-import java.io.IOException;
-import java.util.ArrayList;
-import java.util.List;
-import java.util.Locale;
-import java.util.regex.Matcher;
-import java.util.regex.Pattern;
-import javax.inject.Inject;
-import javax.inject.Singleton;
-import okhttp3.HttpUrl;
-import okhttp3.OkHttpClient;
-import okhttp3.Request;
-import okhttp3.Response;
-import okhttp3.ResponseBody;
-import org.jetbrains.annotations.NotNull;
-import timber.log.Timber;
-
-/**
- * Test methods in ok http api client
- */
-@Singleton
-public class OkHttpJsonApiClient {
-
-    private final OkHttpClient okHttpClient;
-    private final DepictsClient depictsClient;
-    private final HttpUrl wikiMediaToolforgeUrl;
-    private final String sparqlQueryUrl;
-    private final String campaignsUrl;
-    private final Gson gson;
-
-
-    @Inject
-    public OkHttpJsonApiClient(OkHttpClient okHttpClient,
-        DepictsClient depictsClient,
-        HttpUrl wikiMediaToolforgeUrl,
-        String sparqlQueryUrl,
-        String campaignsUrl,
-        Gson gson) {
-        this.okHttpClient = okHttpClient;
-        this.depictsClient = depictsClient;
-        this.wikiMediaToolforgeUrl = wikiMediaToolforgeUrl;
-        this.sparqlQueryUrl = sparqlQueryUrl;
-        this.campaignsUrl = campaignsUrl;
-        this.gson = gson;
-    }
-
-    /**
-     * The method will gradually calls the leaderboard API and fetches the leaderboard
-     *
-     * @param userName username of leaderboard user
-     * @param duration duration for leaderboard
-     * @param category category for leaderboard
-     * @param limit    page size limit for list
-     * @param offset   offset for the list
-     * @return LeaderboardResponse object
-     */
-    @NonNull
-    public Observable<LeaderboardResponse> getLeaderboard(String userName, String duration,
-        String category, String limit, String offset) {
-        final String fetchLeaderboardUrlTemplate = wikiMediaToolforgeUrl
-            + LEADERBOARD_END_POINT;
-        String url = String.format(Locale.ENGLISH,
-            fetchLeaderboardUrlTemplate,
-            userName,
-            duration,
-            category,
-            limit,
-            offset);
-        HttpUrl.Builder urlBuilder = HttpUrl.parse(url).newBuilder();
-        urlBuilder.addQueryParameter("user", userName);
-        urlBuilder.addQueryParameter("duration", duration);
-        urlBuilder.addQueryParameter("category", category);
-        urlBuilder.addQueryParameter("limit", limit);
-        urlBuilder.addQueryParameter("offset", offset);
-        Timber.i("Url %s", urlBuilder.toString());
-        Request request = new Request.Builder()
-            .url(urlBuilder.toString())
-            .build();
-        return Observable.fromCallable(() -> {
-            Response response = okHttpClient.newCall(request).execute();
-            if (response != null && response.body() != null && response.isSuccessful()) {
-                String json = response.body().string();
-                if (json == null) {
-                    return new LeaderboardResponse();
-                }
-                Timber.d("Response for leaderboard is %s", json);
-                try {
-                    return gson.fromJson(json, LeaderboardResponse.class);
-                } catch (Exception e) {
-                    return new LeaderboardResponse();
-                }
-            }
-            return new LeaderboardResponse();
-        });
-    }
-
-    /**
-     * This method will update the leaderboard user avatar
-     *
-     * @param username username to update
-     * @param avatar   url of the new avatar
-     * @return UpdateAvatarResponse object
-     */
-    @NonNull
-    public Single<UpdateAvatarResponse> setAvatar(String username, String avatar) {
-        final String urlTemplate = wikiMediaToolforgeUrl
-            + UPDATE_AVATAR_END_POINT;
-        return Single.fromCallable(() -> {
-            String url = String.format(Locale.ENGLISH,
-                urlTemplate,
-                username,
-                avatar);
-            HttpUrl.Builder urlBuilder = HttpUrl.parse(url).newBuilder();
-            urlBuilder.addQueryParameter("user", username);
-            urlBuilder.addQueryParameter("avatar", avatar);
-            Timber.i("Url %s", urlBuilder.toString());
-            Request request = new Request.Builder()
-                .url(urlBuilder.toString())
-                .build();
-            Response response = okHttpClient.newCall(request).execute();
-            if (response != null && response.body() != null && response.isSuccessful()) {
-                String json = response.body().string();
-                if (json == null) {
-                    return null;
-                }
-                try {
-                    return gson.fromJson(json, UpdateAvatarResponse.class);
-                } catch (Exception e) {
-                    return new UpdateAvatarResponse();
-                }
-            }
-            return null;
-        });
-    }
-
-    @NonNull
-    public Single<Integer> getUploadCount(String userName) {
-        HttpUrl.Builder urlBuilder = wikiMediaToolforgeUrl.newBuilder();
-        urlBuilder
-            .addPathSegments("uploadsbyuser.py")
-            .addQueryParameter("user", userName);
-
-        if (ConfigUtils.isBetaFlavour()) {
-            urlBuilder.addQueryParameter("labs", "commonswiki");
-        }
-
-        Request request = new Request.Builder()
-            .url(urlBuilder.build())
-            .build();
-
-        return Single.fromCallable(() -> {
-            Response response = okHttpClient.newCall(request).execute();
-            if (response != null && response.isSuccessful()) {
-                ResponseBody responseBody = response.body();
-                if (null != responseBody) {
-                    String responseBodyString = responseBody.string().trim();
-                    if (!TextUtils.isEmpty(responseBodyString)) {
-                        try {
-                            return Integer.parseInt(responseBodyString);
-                        } catch (NumberFormatException e) {
-                            Timber.e(e);
-                        }
-                    }
-                }
-            }
-            return 0;
-        });
-    }
-
-    @NonNull
-    public Single<Integer> getWikidataEdits(String userName) {
-        HttpUrl.Builder urlBuilder = wikiMediaToolforgeUrl.newBuilder();
-        urlBuilder
-            .addPathSegments("wikidataedits.py")
-            .addQueryParameter("user", userName);
-
-        if (ConfigUtils.isBetaFlavour()) {
-            urlBuilder.addQueryParameter("labs", "commonswiki");
-        }
-
-        Request request = new Request.Builder()
-            .url(urlBuilder.build())
-            .build();
-
-        return Single.fromCallable(() -> {
-            Response response = okHttpClient.newCall(request).execute();
-            if (response != null &&
-                response.isSuccessful() && response.body() != null) {
-                String json = response.body().string();
-                if (json == null) {
-                    return 0;
-                }
-                // Extract JSON from response
-                json = json.substring(json.indexOf('{'));
-                GetWikidataEditCountResponse countResponse = gson
-                    .fromJson(json, GetWikidataEditCountResponse.class);
-                if (null != countResponse) {
-                    return countResponse.getWikidataEditCount();
-                }
-            }
-            return 0;
-        });
-    }
-
-    /**
-     * This takes userName as input, which is then used to fetch the feedback/achievements
-     * statistics using OkHttp and JavaRx. This function return JSONObject
-     *
-     * @param userName MediaWiki user name
-     * @return
-     */
-    public Single<FeedbackResponse> getAchievements(String userName) {
-        final String fetchAchievementUrlTemplate =
-            wikiMediaToolforgeUrl + (ConfigUtils.isBetaFlavour() ? "/feedback.py?labs=commonswiki"
-                : "/feedback.py");
-        return Single.fromCallable(() -> {
-            String url = String.format(
-                Locale.ENGLISH,
-                fetchAchievementUrlTemplate,
-                userName);
-            HttpUrl.Builder urlBuilder = HttpUrl.parse(url).newBuilder();
-            urlBuilder.addQueryParameter("user", userName);
-            Request request = new Request.Builder()
-                .url(urlBuilder.toString())
-                .build();
-            Response response = okHttpClient.newCall(request).execute();
-            if (response != null && response.body() != null && response.isSuccessful()) {
-                String json = response.body().string();
-                if (json == null) {
-                    return null;
-                }
-                // Extract JSON from response
-                json = json.substring(json.indexOf('{'));
-                Timber.d("Response for achievements is %s", json);
-                try {
-                    return gson.fromJson(json, FeedbackResponse.class);
-                } catch (Exception e) {
-                    return new FeedbackResponse(0, 0, 0, new FeaturedImages(0, 0), 0, "");
-                }
-
-
-            }
-            return null;
-        });
-    }
-
-    /**
-     * Make API Call to get Nearby Places
-     *
-     * @param cur      Search lat long
-     * @param language Language
-     * @param radius   Search Radius
-     * @return
-     * @throws Exception
-     */
-    @Nullable
-    public List<Place> getNearbyPlaces(final LatLng cur, final String language, final double radius,
-        final String customQuery)
-        throws Exception {
-
-        Timber.d("Fetching nearby items at radius %s", radius);
-        Timber.d("CUSTOM_SPARQL: %s", String.valueOf(customQuery != null));
-        final String wikidataQuery;
-        if (customQuery != null) {
-            wikidataQuery = customQuery;
-        } else {
-            wikidataQuery = FileUtils.readFromResource(
-                "/queries/radius_query_for_upload_wizard.rq");
-        }
-        final String query = wikidataQuery
-            .replace("${RAD}", String.format(Locale.ROOT, "%.2f", radius))
-            .replace("${LAT}", String.format(Locale.ROOT, "%.4f", cur.getLatitude()))
-            .replace("${LONG}", String.format(Locale.ROOT, "%.4f", cur.getLongitude()))
-            .replace("${LANG}", language);
-
-        final HttpUrl.Builder urlBuilder = HttpUrl
-            .parse(sparqlQueryUrl)
-            .newBuilder()
-            .addQueryParameter("query", query)
-            .addQueryParameter("format", "json");
-
-        final Request request = new Request.Builder()
-            .url(urlBuilder.build())
-            .build();
-
-        final Response response = okHttpClient.newCall(request).execute();
-        if (response.body() != null && response.isSuccessful()) {
-            final String json = response.body().string();
-            final NearbyResponse nearbyResponse = gson.fromJson(json, NearbyResponse.class);
-            final List<NearbyResultItem> bindings = nearbyResponse.getResults().getBindings();
-            final List<Place> places = new ArrayList<>();
-            for (final NearbyResultItem item : bindings) {
-                final Place placeFromNearbyItem = Place.from(item);
-                placeFromNearbyItem.setMonument(false);
-                places.add(placeFromNearbyItem);
-            }
-            return places;
-        }
-        throw new Exception(response.message());
-    }
-
-    /**
-     * Retrieves nearby places based on screen coordinates and optional query parameters.
-     *
-     * @param screenTopRight          The top right corner of the screen (latitude, longitude).
-     * @param screenBottomLeft        The bottom left corner of the screen (latitude, longitude).
-     * @param language                The language for the query.
-     * @param shouldQueryForMonuments Flag indicating whether to include monuments in the query.
-     * @param customQuery             Optional custom SPARQL query to use instead of default
-     *                                queries.
-     * @return A list of nearby places.
-     * @throws Exception If an error occurs during the retrieval process.
-     */
-    @Nullable
-    public List<Place> getNearbyPlaces(
-        final fr.free.nrw.commons.location.LatLng screenTopRight,
-        final fr.free.nrw.commons.location.LatLng screenBottomLeft, final String language,
-        final boolean shouldQueryForMonuments, final String customQuery)
-        throws Exception {
-
-        Timber.d("CUSTOM_SPARQL: %s", String.valueOf(customQuery != null));
-
-        final String wikidataQuery;
-        if (customQuery != null) {
-            wikidataQuery = customQuery;
-        } else if (!shouldQueryForMonuments) {
-            wikidataQuery = FileUtils.readFromResource("/queries/rectangle_query_for_nearby.rq");
-        } else {
-            wikidataQuery = FileUtils.readFromResource(
-                "/queries/rectangle_query_for_nearby_monuments.rq");
-        }
-
-        final double westCornerLat = screenTopRight.getLatitude();
-        final double westCornerLong = screenTopRight.getLongitude();
-        final double eastCornerLat = screenBottomLeft.getLatitude();
-        final double eastCornerLong = screenBottomLeft.getLongitude();
-
-        final String query = wikidataQuery
-            .replace("${LAT_WEST}", String.format(Locale.ROOT, "%.4f", westCornerLat))
-            .replace("${LONG_WEST}", String.format(Locale.ROOT, "%.4f", westCornerLong))
-            .replace("${LAT_EAST}", String.format(Locale.ROOT, "%.4f", eastCornerLat))
-            .replace("${LONG_EAST}", String.format(Locale.ROOT, "%.4f", eastCornerLong))
-            .replace("${LANG}", language);
-        final HttpUrl.Builder urlBuilder = HttpUrl
-            .parse(sparqlQueryUrl)
-            .newBuilder()
-            .addQueryParameter("query", query)
-            .addQueryParameter("format", "json");
-
-        final Request request = new Request.Builder()
-            .url(urlBuilder.build())
-            .build();
-
-        final Response response = okHttpClient.newCall(request).execute();
-        if (response.body() != null && response.isSuccessful()) {
-            final String json = response.body().string();
-            final NearbyResponse nearbyResponse = gson.fromJson(json, NearbyResponse.class);
-            final List<NearbyResultItem> bindings = nearbyResponse.getResults().getBindings();
-            final List<Place> places = new ArrayList<>();
-            for (final NearbyResultItem item : bindings) {
-                final Place placeFromNearbyItem = Place.from(item);
-                if (shouldQueryForMonuments && item.getMonument() != null) {
-                    placeFromNearbyItem.setMonument(true);
-                } else {
-                    placeFromNearbyItem.setMonument(false);
-                }
-                places.add(placeFromNearbyItem);
-            }
-            return places;
-        }
-        throw new Exception(response.message());
-    }
-
-    /**
-     * Retrieves a list of places based on the provided list of places and language.
-     *
-     * @param placeList A list of Place objects for which to fetch information.
-     * @param language  The language code to use for the query.
-     * @return A list of Place objects with additional information retrieved from Wikidata, or null
-     * if an error occurs.
-     * @throws IOException If there is an issue with reading the resource file or executing the HTTP
-     *                     request.
-     */
-    @Nullable
-    public List<Place> getPlaces(
-        final List<Place> placeList, final String language) throws IOException {
-        final String wikidataQuery = FileUtils.readFromResource("/queries/query_for_item.rq");
-        String qids = "";
-        for (final Place place : placeList) {
-            qids += "\n" + ("wd:" + place.getWikiDataEntityId());
-        }
-        final String query = wikidataQuery
-            .replace("${ENTITY}", qids)
-            .replace("${LANG}", language);
-        final HttpUrl.Builder urlBuilder = HttpUrl
-            .parse(sparqlQueryUrl)
-            .newBuilder()
-            .addQueryParameter("query", query)
-            .addQueryParameter("format", "json");
-
-        final Request request = new Request.Builder()
-            .url(urlBuilder.build())
-            .build();
-
-        try (Response response = okHttpClient.newCall(request).execute()) {
-            if (response.isSuccessful()) {
-                final String json = response.body().string();
-                final NearbyResponse nearbyResponse = gson.fromJson(json, NearbyResponse.class);
-                final List<NearbyResultItem> bindings = nearbyResponse.getResults().getBindings();
-                final List<Place> places = new ArrayList<>();
-                for (final NearbyResultItem item : bindings) {
-                    final Place placeFromNearbyItem = Place.from(item);
-                    places.add(placeFromNearbyItem);
-                }
-                return places;
-            } else {
-                throw new IOException("Unexpected response code: " + response.code());
-            }
-        }
-    }
-
-    /**
-     * Make API Call to get Places
-     *
-     * @param leftLatLng  Left lat long
-     * @param rightLatLng Right lat long
-     * @return
-     * @throws Exception
-     */
-    @Nullable
-    public String getPlacesAsKML(final LatLng leftLatLng, final LatLng rightLatLng)
-        throws Exception {
-        String kmlString = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n" +
-            "<!--Created by Wikimedia Commons Android app -->\n" +
-            "<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n" +
-            "    <Document>";
-        List<PlaceBindings> placeBindings = runQuery(leftLatLng,
-            rightLatLng);
-        if (placeBindings != null) {
-            for (PlaceBindings item : placeBindings) {
-                if (item.getItem() != null && item.getLabel() != null && item.getClas() != null) {
-                    String input = item.getLocation().getValue();
-                    Pattern pattern = Pattern.compile(
-                        "Point\\(([-+]?[0-9]*\\.?[0-9]+) ([-+]?[0-9]*\\.?[0-9]+)\\)");
-                    Matcher matcher = pattern.matcher(input);
-
-                    if (matcher.find()) {
-                        String longStr = matcher.group(1);
-                        String latStr = matcher.group(2);
-                        String itemUrl = item.getItem().getValue();
-                        String itemName = item.getLabel().getValue().replace("&", "&amp;");
-                        String itemLatitude = latStr;
-                        String itemLongitude = longStr;
-                        String itemClass = item.getClas().getValue();
-
-                        String formattedItemName =
-                            !itemClass.isEmpty() ? itemName + " (" + itemClass + ")"
-                                : itemName;
-
-                        String kmlEntry = "\n        <Placemark>\n" +
-                            "            <name>" + formattedItemName + "</name>\n" +
-                            "            <description>" + itemUrl + "</description>\n" +
-                            "            <Point>\n" +
-                            "                <coordinates>" + itemLongitude + ","
-                            + itemLatitude
-                            + "</coordinates>\n" +
-                            "            </Point>\n" +
-                            "        </Placemark>";
-                        kmlString = kmlString + kmlEntry;
-                    } else {
-                        Timber.e("No match found");
-                    }
-                }
-            }
-        }
-        kmlString = kmlString + "\n    </Document>\n" +
-            "</kml>\n";
-        return kmlString;
-    }
-
-    /**
-     * Make API Call to get Places
-     *
-     * @param leftLatLng  Left lat long
-     * @param rightLatLng Right lat long
-     * @return
-     * @throws Exception
-     */
-    @Nullable
-    public String getPlacesAsGPX(final LatLng leftLatLng, final LatLng rightLatLng)
-        throws Exception {
-        String gpxString = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n" +
-            "<gpx\n" +
-            " version=\"1.0\"\n" +
-            " creator=\"Wikimedia Commons Android app\"\n" +
-            " xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\"\n" +
-            " xmlns=\"http://www.topografix.com/GPX/1/0\"\n" +
-            " xsi:schemaLocation=\"http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd\">"
-            + "\n<bounds minlat=\"$MIN_LATITUDE\" minlon=\"$MIN_LONGITUDE\" maxlat=\"$MAX_LATITUDE\" maxlon=\"$MAX_LONGITUDE\"/>";
-
-        List<PlaceBindings> placeBindings = runQuery(leftLatLng, rightLatLng);
-        if (placeBindings != null) {
-            for (PlaceBindings item : placeBindings) {
-                if (item.getItem() != null && item.getLabel() != null && item.getClas() != null) {
-                    String input = item.getLocation().getValue();
-                    Pattern pattern = Pattern.compile(
-                        "Point\\(([-+]?[0-9]*\\.?[0-9]+) ([-+]?[0-9]*\\.?[0-9]+)\\)");
-                    Matcher matcher = pattern.matcher(input);
-
-                    if (matcher.find()) {
-                        String longStr = matcher.group(1);
-                        String latStr = matcher.group(2);
-                        String itemUrl = item.getItem().getValue();
-                        String itemName = item.getLabel().getValue().replace("&", "&amp;");
-                        String itemLatitude = latStr;
-                        String itemLongitude = longStr;
-                        String itemClass = item.getClas().getValue();
-
-                        String formattedItemName =
-                            !itemClass.isEmpty() ? itemName + " (" + itemClass + ")"
-                                : itemName;
-
-                        String gpxEntry =
-                            "\n    <wpt lat=\"" + itemLatitude + "\" lon=\"" + itemLongitude
-                                + "\">\n" +
-                                "        <name>" + itemName + "</name>\n" +
-                                "        <url>" + itemUrl + "</url>\n" +
-                                "    </wpt>";
-                        gpxString = gpxString + gpxEntry;
-
-                    } else {
-                        Timber.e("No match found");
-                    }
-                }
-            }
-
-        }
-        gpxString = gpxString + "\n</gpx>";
-        return gpxString;
-    }
-
-    private List<PlaceBindings> runQuery(final LatLng currentLatLng, final LatLng nextLatLng)
-        throws IOException {
-
-        final String wikidataQuery = FileUtils.readFromResource("/queries/places_query.rq");
-        final String query = wikidataQuery
-            .replace("${LONGITUDE}",
-                String.format(Locale.ROOT, "%.2f", currentLatLng.getLongitude()))
-            .replace("${LATITUDE}", String.format(Locale.ROOT, "%.4f", currentLatLng.getLatitude()))
-            .replace("${NEXT_LONGITUDE}",
-                String.format(Locale.ROOT, "%.4f", nextLatLng.getLongitude()))
-            .replace("${NEXT_LATITUDE}",
-                String.format(Locale.ROOT, "%.4f", nextLatLng.getLatitude()));
-
-        final HttpUrl.Builder urlBuilder = HttpUrl
-            .parse(sparqlQueryUrl)
-            .newBuilder()
-            .addQueryParameter("query", query)
-            .addQueryParameter("format", "json");
-
-        final Request request = new Request.Builder()
-            .url(urlBuilder.build())
-            .build();
-
-        final Response response = okHttpClient.newCall(request).execute();
-        if (response.body() != null && response.isSuccessful()) {
-            final String json = response.body().string();
-            final ItemsClass item = gson.fromJson(json, ItemsClass.class);
-            return item.getResults().getBindings();
-        } else {
-            return null;
-        }
-    }
-
-    /**
-     * Make API Call to get Nearby Places Implementation does not expects a custom query
-     *
-     * @param cur      Search lat long
-     * @param language Language
-     * @param radius   Search Radius
-     * @return
-     * @throws Exception
-     */
-    @Nullable
-    public List<Place> getNearbyPlaces(final LatLng cur, final String language, final double radius)
-        throws Exception {
-        return getNearbyPlaces(cur, language, radius, null);
-    }
-
-    /**
-     * Get the QIDs of all Wikidata items that are subclasses of the given Wikidata item. Example:
-     * bridge -> suspended bridge, aqueduct, etc
-     */
-    public Single<List<DepictedItem>> getChildDepictions(String qid, int startPosition,
-        int limit) throws IOException {
-        return depictedItemsFrom(
-            sparqlQuery(qid, startPosition, limit, "/queries/subclasses_query.rq"));
-    }
-
-    /**
-     * Get the QIDs of all Wikidata items that are subclasses of the given Wikidata item. Example:
-     * bridge -> suspended bridge, aqueduct, etc
-     */
-    public Single<List<DepictedItem>> getParentDepictions(String qid, int startPosition,
-        int limit) throws IOException {
-        return depictedItemsFrom(sparqlQuery(qid, startPosition, limit,
-            "/queries/parentclasses_query.rq"));
-    }
-
-    private Single<List<DepictedItem>> depictedItemsFrom(Request request) {
-        return depictsClient.toDepictions(Single.fromCallable(() -> {
-            try (ResponseBody body = okHttpClient.newCall(request).execute().body()) {
-                return gson.fromJson(body.string(), SparqlResponse.class);
-            }
-        }).doOnError(Timber::e));
-    }
-
-    @NotNull
-    private Request sparqlQuery(String qid, int startPosition, int limit, String fileName)
-        throws IOException {
-        String query = FileUtils.readFromResource(fileName)
-            .replace("${QID}", qid)
-            .replace("${LANG}", "\"" + Locale.getDefault().getLanguage() + "\"")
-            .replace("${LIMIT}", "" + limit)
-            .replace("${OFFSET}", "" + startPosition);
-        HttpUrl.Builder urlBuilder = HttpUrl
-            .parse(sparqlQueryUrl)
-            .newBuilder()
-            .addQueryParameter("query", query)
-            .addQueryParameter("format", "json");
-        return new Request.Builder()
-            .url(urlBuilder.build())
-            .build();
-    }
-
-    public Single<CampaignResponseDTO> getCampaigns() {
-        return Single.fromCallable(() -> {
-            Request request = new Request.Builder().url(campaignsUrl)
-                .build();
-            Response response = okHttpClient.newCall(request).execute();
-            if (response != null && response.body() != null && response.isSuccessful()) {
-                String json = response.body().string();
-                if (json == null) {
-                    return null;
-                }
-                return gson.fromJson(json, CampaignResponseDTO.class);
-            }
-            return null;
-        });
-    }
-}

app/src/main/java/fr/free/nrw/commons/mwapi/OkHttpJsonApiClient.kt

@@ -0,0 +1,624 @@
+package fr.free.nrw.commons.mwapi
+
+import android.text.TextUtils
+import com.google.gson.Gson
+import fr.free.nrw.commons.BuildConfig
+import fr.free.nrw.commons.campaigns.CampaignResponseDTO
+import fr.free.nrw.commons.explore.depictions.DepictsClient
+import fr.free.nrw.commons.fileusages.FileUsagesResponse
+import fr.free.nrw.commons.fileusages.GlobalFileUsagesResponse
+import fr.free.nrw.commons.location.LatLng
+import fr.free.nrw.commons.nearby.Place
+import fr.free.nrw.commons.nearby.model.ItemsClass
+import fr.free.nrw.commons.nearby.model.NearbyResponse
+import fr.free.nrw.commons.nearby.model.PlaceBindings
+import fr.free.nrw.commons.profile.achievements.FeaturedImages
+import fr.free.nrw.commons.profile.achievements.FeedbackResponse
+import fr.free.nrw.commons.profile.leaderboard.LeaderboardConstants
+import fr.free.nrw.commons.profile.leaderboard.LeaderboardResponse
+import fr.free.nrw.commons.profile.leaderboard.UpdateAvatarResponse
+import fr.free.nrw.commons.upload.FileUtils
+import fr.free.nrw.commons.upload.structure.depictions.DepictedItem
+import fr.free.nrw.commons.utils.ConfigUtils.isBetaFlavour
+import fr.free.nrw.commons.wikidata.model.GetWikidataEditCountResponse
+import io.reactivex.Observable
+import io.reactivex.Single
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import okhttp3.HttpUrl
+import okhttp3.HttpUrl.Companion.toHttpUrlOrNull
+import okhttp3.OkHttpClient
+import okhttp3.Request
+import okhttp3.Response
+import timber.log.Timber
+import java.io.IOException
+import java.util.Locale
+import java.util.regex.Pattern
+import javax.inject.Inject
+import javax.inject.Singleton
+
+/**
+ * Test methods in ok http api client
+ */
+@Singleton
+class OkHttpJsonApiClient @Inject constructor(
+    private val okHttpClient: OkHttpClient,
+    private val depictsClient: DepictsClient,
+    private val wikiMediaToolforgeUrl: HttpUrl,
+    private val sparqlQueryUrl: String,
+    private val campaignsUrl: String,
+    private val gson: Gson
+) {
+    fun getLeaderboard(
+        userName: String?, duration: String?,
+        category: String?, limit: String?, offset: String?
+    ): Observable<LeaderboardResponse> {
+        val fetchLeaderboardUrlTemplate =
+            wikiMediaToolforgeUrl.toString() + LeaderboardConstants.LEADERBOARD_END_POINT
+        val url = String.format(
+            Locale.ENGLISH,
+            fetchLeaderboardUrlTemplate, userName, duration, category, limit, offset
+        )
+        val urlBuilder: HttpUrl.Builder = url.toHttpUrlOrNull()!!.newBuilder()
+            .addQueryParameter("user", userName)
+            .addQueryParameter("duration", duration)
+            .addQueryParameter("category", category)
+            .addQueryParameter("limit", limit)
+            .addQueryParameter("offset", offset)
+        Timber.i("Url %s", urlBuilder.toString())
+        val request: Request = Request.Builder()
+            .url(urlBuilder.toString())
+            .build()
+        return Observable.fromCallable({
+            val response: Response = okHttpClient.newCall(request).execute()
+            if (response.body != null && response.isSuccessful) {
+                val json: String = response.body!!.string()
+                Timber.d("Response for leaderboard is %s", json)
+                try {
+                    return@fromCallable gson.fromJson<LeaderboardResponse>(
+                        json,
+                        LeaderboardResponse::class.java
+                    )
+                } catch (e: Exception) {
+                    return@fromCallable LeaderboardResponse()
+                }
+            }
+            LeaderboardResponse()
+        })
+    }
+
+    /**
+     * Show where file is being used on Commons.
+     */
+    suspend fun getFileUsagesOnCommons(
+        fileName: String?,
+        pageSize: Int
+    ): FileUsagesResponse? {
+        return withContext(Dispatchers.IO) {
+
+            return@withContext try {
+
+                val urlBuilder = BuildConfig.FILE_USAGES_BASE_URL.toHttpUrlOrNull()!!.newBuilder()
+                urlBuilder.addQueryParameter("prop", "fileusage")
+                urlBuilder.addQueryParameter("titles", fileName)
+                urlBuilder.addQueryParameter("fulimit", pageSize.toString())
+
+                Timber.i("Url %s", urlBuilder.toString())
+                val request: Request = Request.Builder()
+                    .url(urlBuilder.toString())
+                    .build()
+
+                val response: Response = okHttpClient.newCall(request).execute()
+                if (response.body != null && response.isSuccessful) {
+                    val json: String = response.body!!.string()
+                    gson.fromJson<FileUsagesResponse>(
+                        json,
+                        FileUsagesResponse::class.java
+                    )
+                } else null
+            } catch (e: Exception) {
+                Timber.e(e)
+                null
+            }
+        }
+    }
+
+    /**
+     * Show where file is being used on non-Commons wikis, typically the Wikipedias in various languages.
+     */
+    suspend fun getGlobalFileUsages(
+        fileName: String?,
+        pageSize: Int
+    ): GlobalFileUsagesResponse? {
+
+        return withContext(Dispatchers.IO) {
+
+            return@withContext try {
+
+                val urlBuilder = BuildConfig.FILE_USAGES_BASE_URL.toHttpUrlOrNull()!!.newBuilder()
+                urlBuilder.addQueryParameter("prop", "globalusage")
+                urlBuilder.addQueryParameter("titles", fileName)
+                urlBuilder.addQueryParameter("gulimit", pageSize.toString())
+
+                Timber.i("Url %s", urlBuilder.toString())
+                val request: Request = Request.Builder()
+                    .url(urlBuilder.toString())
+                    .build()
+
+                val response: Response = okHttpClient.newCall(request).execute()
+                if (response.body != null && response.isSuccessful) {
+                    val json: String = response.body!!.string()
+
+                    gson.fromJson<GlobalFileUsagesResponse>(
+                        json,
+                        GlobalFileUsagesResponse::class.java
+                    )
+                } else null
+            } catch (e: Exception) {
+                Timber.e(e)
+                null
+            }
+        }
+    }
+
+    fun setAvatar(username: String?, avatar: String?): Single<UpdateAvatarResponse?> {
+        val urlTemplate = wikiMediaToolforgeUrl
+            .toString() + LeaderboardConstants.UPDATE_AVATAR_END_POINT
+        return Single.fromCallable<UpdateAvatarResponse?>({
+            val url = String.format(Locale.ENGLISH, urlTemplate, username, avatar)
+            val urlBuilder: HttpUrl.Builder = url.toHttpUrlOrNull()!!.newBuilder()
+                .addQueryParameter("user", username)
+                .addQueryParameter("avatar", avatar)
+            Timber.i("Url %s", urlBuilder.toString())
+            val request: Request = Request.Builder()
+                .url(urlBuilder.toString())
+                .build()
+            val response: Response = okHttpClient.newCall(request).execute()
+            if (response.body != null && response.isSuccessful) {
+                val json: String = response.body!!.string() ?: return@fromCallable null
+                try {
+                    return@fromCallable gson.fromJson<UpdateAvatarResponse>(
+                        json,
+                        UpdateAvatarResponse::class.java
+                    )
+                } catch (e: Exception) {
+                    return@fromCallable UpdateAvatarResponse()
+                }
+            }
+            null
+        })
+    }
+
+    fun getUploadCount(userName: String?): Single<Int> {
+        val urlBuilder: HttpUrl.Builder = wikiMediaToolforgeUrl.newBuilder()
+            .addPathSegments("uploadsbyuser.py")
+            .addQueryParameter("user", userName)
+
+        if (isBetaFlavour) {
+            urlBuilder.addQueryParameter("labs", "commonswiki")
+        }
+
+        val request: Request = Request.Builder()
+            .url(urlBuilder.build())
+            .build()
+
+        return Single.fromCallable<Int>({
+            val response: Response = okHttpClient.newCall(request).execute()
+            if (response != null && response.isSuccessful) {
+                val responseBody = response.body
+                if (null != responseBody) {
+                    val responseBodyString = responseBody.string().trim { it <= ' ' }
+                    if (!TextUtils.isEmpty(responseBodyString)) {
+                        try {
+                            return@fromCallable responseBodyString.toInt()
+                        } catch (e: NumberFormatException) {
+                            Timber.e(e)
+                        }
+                    }
+                }
+            }
+            0
+        })
+    }
+
+    fun getWikidataEdits(userName: String?): Single<Int> {
+        val urlBuilder: HttpUrl.Builder = wikiMediaToolforgeUrl.newBuilder()
+            .addPathSegments("wikidataedits.py")
+            .addQueryParameter("user", userName)
+
+        if (isBetaFlavour) {
+            urlBuilder.addQueryParameter("labs", "commonswiki")
+        }
+
+        val request: Request = Request.Builder()
+            .url(urlBuilder.build())
+            .build()
+
+        return Single.fromCallable<Int>({
+            val response: Response = okHttpClient.newCall(request).execute()
+            if (response != null && response.isSuccessful && response.body != null) {
+                var json: String = response.body!!.string()
+                // Extract JSON from response
+                json = json.substring(json.indexOf('{'))
+                val countResponse = gson
+                    .fromJson(
+                        json,
+                        GetWikidataEditCountResponse::class.java
+                    )
+                if (null != countResponse) {
+                    return@fromCallable countResponse.wikidataEditCount
+                }
+            }
+            0
+        })
+    }
+
+    fun getAchievements(userName: String?): Single<FeedbackResponse?> {
+        val suffix = if (isBetaFlavour) "/feedback.py?labs=commonswiki" else "/feedback.py"
+        val fetchAchievementUrlTemplate = wikiMediaToolforgeUrl.toString() + suffix
+        return Single.fromCallable<FeedbackResponse?>({
+            val url = String.format(
+                Locale.ENGLISH,
+                fetchAchievementUrlTemplate,
+                userName
+            )
+            val urlBuilder: HttpUrl.Builder = url.toHttpUrlOrNull()!!.newBuilder()
+                .addQueryParameter("user", userName)
+            val request: Request = Request.Builder()
+                .url(urlBuilder.toString())
+                .build()
+            val response: Response = okHttpClient.newCall(request).execute()
+            if (response.body != null && response.isSuccessful) {
+                var json: String = response.body!!.string()
+                // Extract JSON from response
+                json = json.substring(json.indexOf('{'))
+                Timber.d("Response for achievements is %s", json)
+                try {
+                    return@fromCallable gson.fromJson<FeedbackResponse>(
+                        json,
+                        FeedbackResponse::class.java
+                    )
+                } catch (e: Exception) {
+                    return@fromCallable FeedbackResponse(0, 0, 0, FeaturedImages(0, 0), 0, "")
+                }
+            }
+            null
+        })
+    }
+
+    @JvmOverloads
+    @Throws(Exception::class)
+    fun getNearbyPlaces(
+        cur: LatLng, language: String, radius: Double,
+        customQuery: String? = null
+    ): List<Place>? {
+        Timber.d("Fetching nearby items at radius %s", radius)
+        Timber.d("CUSTOM_SPARQL: %s", (customQuery != null).toString())
+        val wikidataQuery: String = if (customQuery != null) {
+            customQuery
+        } else {
+            FileUtils.readFromResource("/queries/radius_query_for_upload_wizard.rq")
+        }
+        val query = wikidataQuery
+            .replace("\${RAD}", String.format(Locale.ROOT, "%.2f", radius))
+            .replace("\${LAT}", String.format(Locale.ROOT, "%.4f", cur.latitude))
+            .replace("\${LONG}", String.format(Locale.ROOT, "%.4f", cur.longitude))
+            .replace("\${LANG}", language)
+
+        val urlBuilder: HttpUrl.Builder = sparqlQueryUrl.toHttpUrlOrNull()!!
+            .newBuilder()
+            .addQueryParameter("query", query)
+            .addQueryParameter("format", "json")
+
+        val request: Request = Request.Builder()
+            .url(urlBuilder.build())
+            .build()
+
+        val response = okHttpClient.newCall(request).execute()
+        if (response.body != null && response.isSuccessful) {
+            val json = response.body!!.string()
+            val nearbyResponse = gson.fromJson(json, NearbyResponse::class.java)
+            val bindings = nearbyResponse.results.bindings
+            val places: MutableList<Place> = ArrayList()
+            for (item in bindings) {
+                val placeFromNearbyItem = Place.from(item)
+                placeFromNearbyItem.isMonument = false
+                places.add(placeFromNearbyItem)
+            }
+            return places
+        }
+        throw Exception(response.message)
+    }
+
+    @Throws(Exception::class)
+    fun getNearbyPlaces(
+        screenTopRight: LatLng,
+        screenBottomLeft: LatLng, language: String,
+        shouldQueryForMonuments: Boolean, customQuery: String?
+    ): List<Place>? {
+        Timber.d("CUSTOM_SPARQL: %s", (customQuery != null).toString())
+
+        val wikidataQuery: String = if (customQuery != null) {
+            customQuery
+        } else if (!shouldQueryForMonuments) {
+            FileUtils.readFromResource("/queries/rectangle_query_for_nearby.rq")
+        } else {
+            FileUtils.readFromResource("/queries/rectangle_query_for_nearby_monuments.rq")
+        }
+
+        val westCornerLat = screenTopRight.latitude
+        val westCornerLong = screenTopRight.longitude
+        val eastCornerLat = screenBottomLeft.latitude
+        val eastCornerLong = screenBottomLeft.longitude
+
+        val query = wikidataQuery
+            .replace("\${LAT_WEST}", String.format(Locale.ROOT, "%.4f", westCornerLat))
+            .replace("\${LONG_WEST}", String.format(Locale.ROOT, "%.4f", westCornerLong))
+            .replace("\${LAT_EAST}", String.format(Locale.ROOT, "%.4f", eastCornerLat))
+            .replace("\${LONG_EAST}", String.format(Locale.ROOT, "%.4f", eastCornerLong))
+            .replace("\${LANG}", language)
+        val urlBuilder: HttpUrl.Builder = sparqlQueryUrl.toHttpUrlOrNull()!!
+            .newBuilder()
+            .addQueryParameter("query", query)
+            .addQueryParameter("format", "json")
+
+        val request: Request = Request.Builder()
+            .url(urlBuilder.build())
+            .build()
+
+        val response = okHttpClient.newCall(request).execute()
+        if (response.body != null && response.isSuccessful) {
+            val json = response.body!!.string()
+            val nearbyResponse = gson.fromJson(json, NearbyResponse::class.java)
+            val bindings = nearbyResponse.results.bindings
+            val places: MutableList<Place> = ArrayList()
+            for (item in bindings) {
+                val placeFromNearbyItem = Place.from(item)
+                if (shouldQueryForMonuments && item.getMonument() != null) {
+                    placeFromNearbyItem.isMonument = true
+                } else {
+                    placeFromNearbyItem.isMonument = false
+                }
+                places.add(placeFromNearbyItem)
+            }
+            return places
+        }
+        throw Exception(response.message)
+    }
+
+    @Throws(IOException::class)
+    fun getPlaces(
+        placeList: List<Place>, language: String
+    ): List<Place>? {
+        val wikidataQuery = FileUtils.readFromResource("/queries/query_for_item.rq")
+        var qids = ""
+        for (place in placeList) {
+            qids += """
+${"wd:" + place.wikiDataEntityId}"""
+        }
+        val query = wikidataQuery
+            .replace("\${ENTITY}", qids)
+            .replace("\${LANG}", language)
+        val urlBuilder: HttpUrl.Builder = sparqlQueryUrl.toHttpUrlOrNull()!!
+            .newBuilder()
+            .addQueryParameter("query", query)
+            .addQueryParameter("format", "json")
+
+        val request: Request = Request.Builder().url(urlBuilder.build()).build()
+
+        okHttpClient.newCall(request).execute().use { response ->
+            if (response.isSuccessful) {
+                val json = response.body!!.string()
+                val nearbyResponse = gson.fromJson(json, NearbyResponse::class.java)
+                val bindings = nearbyResponse.results.bindings
+                val places: MutableList<Place> = ArrayList()
+                for (item in bindings) {
+                    val placeFromNearbyItem = Place.from(item)
+                    places.add(placeFromNearbyItem)
+                }
+                return places
+            } else {
+                throw IOException("Unexpected response code: " + response.code)
+            }
+        }
+    }
+
+    @Throws(Exception::class)
+    fun getPlacesAsKML(leftLatLng: LatLng, rightLatLng: LatLng): String? {
+        var kmlString = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<!--Created by Wikimedia Commons Android app -->
+<kml xmlns="http://www.opengis.net/kml/2.2">
+    <Document>"""
+        val placeBindings = runQuery(
+            leftLatLng,
+            rightLatLng
+        )
+        if (placeBindings != null) {
+            for ((item1, label, location, clas) in placeBindings) {
+                if (item1 != null && label != null && clas != null) {
+                    val input = location.value
+                    val pattern = Pattern.compile(
+                        "Point\\(([-+]?[0-9]*\\.?[0-9]+) ([-+]?[0-9]*\\.?[0-9]+)\\)"
+                    )
+                    val matcher = pattern.matcher(input)
+
+                    if (matcher.find()) {
+                        val longStr = matcher.group(1)
+                        val latStr = matcher.group(2)
+                        val itemUrl = item1.value
+                        val itemName = label.value.replace("&", "&amp;")
+                        val itemLatitude = latStr
+                        val itemLongitude = longStr
+                        val itemClass = clas.value
+
+                        val formattedItemName =
+                            if (!itemClass.isEmpty())
+                                "$itemName ($itemClass)"
+                            else
+                                itemName
+
+                        val kmlEntry = ("""
+        <Placemark>
+            <name>$formattedItemName</name>
+            <description>$itemUrl</description>
+            <Point>
+                <coordinates>$itemLongitude,$itemLatitude</coordinates>
+            </Point>
+        </Placemark>""")
+                        kmlString = kmlString + kmlEntry
+                    } else {
+                        Timber.e("No match found")
+                    }
+                }
+            }
+        }
+        kmlString = """$kmlString
+    </Document>
+</kml>
+"""
+        return kmlString
+    }
+
+    @Throws(Exception::class)
+    fun getPlacesAsGPX(leftLatLng: LatLng, rightLatLng: LatLng): String? {
+        var gpxString = ("""<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<gpx
+ version="1.0"
+ creator="Wikimedia Commons Android app"
+ xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+ xmlns="http://www.topografix.com/GPX/1/0"
+ xsi:schemaLocation="http://www.topografix.com/GPX/1/0 http://www.topografix.com/GPX/1/0/gpx.xsd">
+<bounds minlat="${"$"}MIN_LATITUDE" minlon="${"$"}MIN_LONGITUDE" maxlat="${"$"}MAX_LATITUDE" maxlon="${"$"}MAX_LONGITUDE"/>""")
+
+        val placeBindings = runQuery(leftLatLng, rightLatLng)
+        if (placeBindings != null) {
+            for ((item1, label, location, clas) in placeBindings) {
+                if (item1 != null && label != null && clas != null) {
+                    val input = location.value
+                    val pattern = Pattern.compile(
+                        "Point\\(([-+]?[0-9]*\\.?[0-9]+) ([-+]?[0-9]*\\.?[0-9]+)\\)"
+                    )
+                    val matcher = pattern.matcher(input)
+
+                    if (matcher.find()) {
+                        val longStr = matcher.group(1)
+                        val latStr = matcher.group(2)
+                        val itemUrl = item1.value
+                        val itemName = label.value.replace("&", "&amp;")
+                        val itemLatitude = latStr
+                        val itemLongitude = longStr
+                        val itemClass = clas.value
+
+                        val formattedItemName = if (!itemClass.isEmpty())
+                            "$itemName ($itemClass)"
+                        else
+                            itemName
+
+                        val gpxEntry =
+                            ("""
+    <wpt lat="$itemLatitude" lon="$itemLongitude">
+        <name>$itemName</name>
+        <url>$itemUrl</url>
+    </wpt>""")
+                        gpxString = gpxString + gpxEntry
+                    } else {
+                        Timber.e("No match found")
+                    }
+                }
+            }
+        }
+        gpxString = "$gpxString\n</gpx>"
+        return gpxString
+    }
+
+    @Throws(IOException::class)
+    fun getChildDepictions(
+        qid: String, startPosition: Int,
+        limit: Int
+    ): Single<List<DepictedItem>> =
+        depictedItemsFrom(sparqlQuery(qid, startPosition, limit, "/queries/subclasses_query.rq"))
+
+    @Throws(IOException::class)
+    fun getParentDepictions(
+        qid: String, startPosition: Int,
+        limit: Int
+    ): Single<List<DepictedItem>> = depictedItemsFrom(
+        sparqlQuery(
+            qid,
+            startPosition,
+            limit,
+            "/queries/parentclasses_query.rq"
+        )
+    )
+
+    fun getCampaigns(): Single<CampaignResponseDTO> {
+        return Single.fromCallable<CampaignResponseDTO?>({
+            val request: Request = Request.Builder().url(campaignsUrl).build()
+            val response: Response = okHttpClient.newCall(request).execute()
+            if (response.body != null && response.isSuccessful) {
+                val json: String = response.body!!.string()
+                return@fromCallable gson.fromJson<CampaignResponseDTO>(
+                    json,
+                    CampaignResponseDTO::class.java
+                )
+            }
+            null
+        })
+    }
+
+    private fun depictedItemsFrom(request: Request): Single<List<DepictedItem>> {
+        return depictsClient.toDepictions(Single.fromCallable({
+            okHttpClient.newCall(request).execute().body.use { body ->
+                return@fromCallable gson.fromJson<SparqlResponse>(
+                    body!!.string(),
+                    SparqlResponse::class.java
+                )
+            }
+        }).doOnError({ t: Throwable? -> Timber.e(t) }))
+    }
+
+    @Throws(IOException::class)
+    private fun sparqlQuery(
+        qid: String,
+        startPosition: Int,
+        limit: Int,
+        fileName: String
+    ): Request {
+        val query = FileUtils.readFromResource(fileName)
+            .replace("\${QID}", qid)
+            .replace("\${LANG}", "\"" + Locale.getDefault().language + "\"")
+            .replace("\${LIMIT}", "" + limit)
+            .replace("\${OFFSET}", "" + startPosition)
+        val urlBuilder: HttpUrl.Builder = sparqlQueryUrl.toHttpUrlOrNull()!!
+            .newBuilder()
+            .addQueryParameter("query", query)
+            .addQueryParameter("format", "json")
+        return Request.Builder().url(urlBuilder.build()).build()
+    }
+
+    @Throws(IOException::class)
+    private fun runQuery(currentLatLng: LatLng, nextLatLng: LatLng): List<PlaceBindings>? {
+        val wikidataQuery = FileUtils.readFromResource("/queries/places_query.rq")
+        val query = wikidataQuery
+            .replace("\${LONGITUDE}", String.format(Locale.ROOT, "%.2f", currentLatLng.longitude))
+            .replace("\${LATITUDE}", String.format(Locale.ROOT, "%.4f", currentLatLng.latitude))
+            .replace("\${NEXT_LONGITUDE}", String.format(Locale.ROOT, "%.4f", nextLatLng.longitude))
+            .replace("\${NEXT_LATITUDE}", String.format(Locale.ROOT, "%.4f", nextLatLng.latitude))
+
+        val urlBuilder: HttpUrl.Builder = sparqlQueryUrl.toHttpUrlOrNull()!!
+            .newBuilder()
+            .addQueryParameter("query", query)
+            .addQueryParameter("format", "json")
+
+        val request: Request = Request.Builder().url(urlBuilder.build()).build()
+
+        val response = okHttpClient.newCall(request).execute()
+        if (response.body != null && response.isSuccessful) {
+            val json = response.body!!.string()
+            val item = gson.fromJson(json, ItemsClass::class.java)
+            return item.results.bindings
+        } else {
+            return null
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/navtab/MoreBottomSheetFragment.kt

@@ -10,7 +10,6 @@ import android.os.Bundle
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
-import android.widget.TextView
 import android.widget.Toast
 import androidx.appcompat.app.AlertDialog
 import com.google.android.material.bottomsheet.BottomSheetDialogFragment
@@ -25,6 +24,7 @@ import fr.free.nrw.commons.databinding.FragmentMoreBottomSheetBinding
 import fr.free.nrw.commons.di.ApplicationlessInjection
 import fr.free.nrw.commons.feedback.FeedbackContentCreator
 import fr.free.nrw.commons.feedback.FeedbackDialog
+import fr.free.nrw.commons.feedback.OnFeedbackSubmitCallback
 import fr.free.nrw.commons.feedback.model.Feedback
 import fr.free.nrw.commons.kvstore.BasicKvStore
 import fr.free.nrw.commons.kvstore.JsonKvStore
@@ -111,10 +111,18 @@ class MoreBottomSheetFragment : BottomSheetDialogFragment() {
     private fun setUserName() {
         val store = BasicKvStore(requireContext(), getUserName())
         val level = store.getString("userAchievementsLevel", "0")
-        binding?.moreProfile?.text = if (level == "0") {
+        if (level == "0"){
-            "${getUserName()} (${getString(R.string.see_your_achievements)})"
+            binding?.moreProfile?.text = getString(
+                R.string.profileLevel,
+                getUserName(),
+                getString(R.string.see_your_achievements) // Second argument
+            )
         } else {
-            "${getUserName()} (${getString(R.string.level)} $level)"
+            binding?.moreProfile?.text = getString(
+                R.string.profileLevel,
+                getUserName(),
+                level
+            )
         }
     }
 
@@ -148,7 +156,11 @@ class MoreBottomSheetFragment : BottomSheetDialogFragment() {
      * Creates and shows a dialog asking feedback from users
      */
     private fun showFeedbackDialog() {
-        FeedbackDialog(requireContext()) { uploadFeedback(it) }.show()
+        FeedbackDialog(requireContext(), object : OnFeedbackSubmitCallback{
+            override fun onFeedbackSubmit(feedback: Feedback) {
+                uploadFeedback(feedback)
+            }
+        }).show()
     }
 
     /**
@@ -160,8 +172,8 @@ class MoreBottomSheetFragment : BottomSheetDialogFragment() {
 
         val single = pageEditClient.createNewSection(
             "Commons:Mobile_app/Feedback",
-            feedbackContentCreator.sectionTitle,
+            feedbackContentCreator.getSectionTitle(),
-            feedbackContentCreator.sectionText,
+            feedbackContentCreator.getSectionText(),
             "New feedback on version ${feedback.version} of the app"
         )
             .flatMapSingle { Single.just(it) }

app/src/main/java/fr/free/nrw/commons/notification/NotificationClient.kt

@@ -64,8 +64,8 @@ class NotificationClient
                 return Notification(
                     notificationType = notificationType,
                     notificationText = notificationText,
-                    date = DateUtil.getMonthOnlyDateString(timestamp),
+                    date = DateUtil.getMonthOnlyDateString(getTimestamp()),
-                    link = contents?.links?.primary?.url ?: "",
+                    link = contents?.links?.getPrimary()?.url ?: "",
                     iconUrl = "",
                     notificationId = id().toString(),
                 )

app/src/main/java/fr/free/nrw/commons/profile/ProfileActivity.java

@@ -16,7 +16,6 @@ import androidx.annotation.NonNull;
 import androidx.core.content.FileProvider;
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentManager;
-import com.google.android.material.tabs.TabLayout;
 import fr.free.nrw.commons.R;
 import fr.free.nrw.commons.Utils;
 import fr.free.nrw.commons.ViewPagerAdapter;

app/src/main/java/fr/free/nrw/commons/profile/achievements/AchievementsFragment.java

@@ -1,492 +0,0 @@
-package fr.free.nrw.commons.profile.achievements;
-
-import android.accounts.Account;
-import android.content.Context;
-import android.net.Uri;
-import android.os.Bundle;
-import android.util.DisplayMetrics;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.widget.Toast;
-import androidx.annotation.Nullable;
-import androidx.appcompat.view.ContextThemeWrapper;
-import androidx.constraintlayout.widget.ConstraintLayout;
-import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat;
-import fr.free.nrw.commons.R;
-import fr.free.nrw.commons.Utils;
-import fr.free.nrw.commons.auth.SessionManager;
-import fr.free.nrw.commons.databinding.FragmentAchievementsBinding;
-import fr.free.nrw.commons.di.CommonsDaggerSupportFragment;
-import fr.free.nrw.commons.kvstore.BasicKvStore;
-import fr.free.nrw.commons.mwapi.OkHttpJsonApiClient;
-import fr.free.nrw.commons.utils.ConfigUtils;
-import fr.free.nrw.commons.utils.DialogUtil;
-import fr.free.nrw.commons.utils.ViewUtil;
-import fr.free.nrw.commons.profile.ProfileActivity;
-import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.disposables.CompositeDisposable;
-import io.reactivex.schedulers.Schedulers;
-import java.util.Locale;
-import java.util.Objects;
-import javax.inject.Inject;
-import org.apache.commons.lang3.StringUtils;
-import timber.log.Timber;
-
-/**
- * fragment for sharing feedback on uploaded activity
- */
-public class AchievementsFragment extends CommonsDaggerSupportFragment {
-
-    private static final double BADGE_IMAGE_WIDTH_RATIO = 0.4;
-    private static final double BADGE_IMAGE_HEIGHT_RATIO = 0.3;
-
-    /**
-     * Help link URLs
-     */
-    private static final String IMAGES_UPLOADED_URL = "https://commons.wikimedia.org/wiki/Commons:Project_scope";
-    private static final String IMAGES_REVERT_URL = "https://commons.wikimedia.org/wiki/Commons:Deletion_policy#Reasons_for_deletion";
-    private static final String IMAGES_USED_URL = "https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/Images";
-    private static final String IMAGES_NEARBY_PLACES_URL = "https://www.wikidata.org/wiki/Property:P18";
-    private static final String IMAGES_FEATURED_URL = "https://commons.wikimedia.org/wiki/Commons:Featured_pictures";
-    private static final String QUALITY_IMAGE_URL = "https://commons.wikimedia.org/wiki/Commons:Quality_images";
-    private static final String THANKS_URL = "https://www.mediawiki.org/wiki/Extension:Thanks";
-
-    private LevelController.LevelInfo levelInfo;
-
-    @Inject
-    SessionManager sessionManager;
-
-    @Inject
-    OkHttpJsonApiClient okHttpJsonApiClient;
-
-    private FragmentAchievementsBinding binding;
-
-    private CompositeDisposable compositeDisposable = new CompositeDisposable();
-
-    // To keep track of the number of wiki edits made by a user
-    private int numberOfEdits = 0;
-
-    private String userName;
-
-    @Override
-    public void onCreate(@Nullable final Bundle savedInstanceState) {
-        super.onCreate(savedInstanceState);
-        if (getArguments() != null) {
-            userName = getArguments().getString(ProfileActivity.KEY_USERNAME);
-        }
-    }
-
-    /**
-     * This method helps in the creation Achievement screen and
-     * dynamically set the size of imageView
-     *
-     * @param savedInstanceState Data bundle
-     */
-    @Override
-    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
-        binding = FragmentAchievementsBinding.inflate(inflater, container, false);
-        View rootView = binding.getRoot();
-
-        binding.achievementInfo.setOnClickListener(view -> showInfoDialog());
-        binding.imagesUploadInfo.setOnClickListener(view -> showUploadInfo());
-        binding.imagesRevertedInfo.setOnClickListener(view -> showRevertedInfo());
-        binding.imagesUsedByWikiInfo.setOnClickListener(view -> showUsedByWikiInfo());
-        binding.imagesNearbyInfo.setOnClickListener(view -> showImagesViaNearbyInfo());
-        binding.imagesFeaturedInfo.setOnClickListener(view -> showFeaturedImagesInfo());
-        binding.thanksReceivedInfo.setOnClickListener(view -> showThanksReceivedInfo());
-        binding.qualityImagesInfo.setOnClickListener(view -> showQualityImagesInfo());
-
-        // DisplayMetrics used to fetch the size of the screen
-        DisplayMetrics displayMetrics = new DisplayMetrics();
-        getActivity().getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
-        int height = displayMetrics.heightPixels;
-        int width = displayMetrics.widthPixels;
-
-        // Used for the setting the size of imageView at runtime
-        ConstraintLayout.LayoutParams params = (ConstraintLayout.LayoutParams)
-            binding.achievementBadgeImage.getLayoutParams();
-        params.height = (int) (height * BADGE_IMAGE_HEIGHT_RATIO);
-        params.width = (int) (width * BADGE_IMAGE_WIDTH_RATIO);
-        binding.achievementBadgeImage.requestLayout();
-        binding.progressBar.setVisibility(View.VISIBLE);
-
-        setHasOptionsMenu(true);
-
-        // Set the initial value of WikiData edits to 0
-        binding.wikidataEdits.setText("0");
-        if(sessionManager.getUserName() == null || sessionManager.getUserName().equals(userName)){
-            binding.tvAchievementsOfUser.setVisibility(View.GONE);
-        }else{
-            binding.tvAchievementsOfUser.setVisibility(View.VISIBLE);
-            binding.tvAchievementsOfUser.setText(getString(R.string.achievements_of_user,userName));
-        }
-
-        // Achievements currently unimplemented in Beta flavor. Skip all API calls.
-        if(ConfigUtils.isBetaFlavour()) {
-            binding.progressBar.setVisibility(View.GONE);
-            binding.imagesUsedByWikiText.setText(R.string.no_image);
-            binding.imagesRevertedText.setText(R.string.no_image_reverted);
-            binding.imagesUploadTextParam.setText(R.string.no_image_uploaded);
-            binding.wikidataEdits.setText("0");
-            binding.imageFeatured.setText("0");
-            binding.qualityImages.setText("0");
-            binding.achievementLevel.setText("0");
-            setMenuVisibility(true);
-            return rootView;
-        }
-        setWikidataEditCount();
-        setAchievements();
-        return rootView;
-    }
-
-    @Override
-    public void onDestroyView() {
-        binding = null;
-        super.onDestroyView();
-    }
-
-    @Override
-    public void setMenuVisibility(boolean visible) {
-        super.setMenuVisibility(visible);
-
-        // Whenever this fragment is revealed in a menu,
-        // notify Beta users the page data is unavailable
-        if(ConfigUtils.isBetaFlavour() && visible) {
-            Context ctx = null;
-            if(getContext() != null) {
-                ctx = getContext();
-            } else if(getView() != null && getView().getContext() != null) {
-                ctx = getView().getContext();
-            }
-            if(ctx != null) {
-                Toast.makeText(ctx,
-                    R.string.achievements_unavailable_beta,
-                    Toast.LENGTH_LONG).show();
-            }
-        }
-    }
-
-    /**
-     * To invoke the AlertDialog on clicking info button
-     */
-    protected void showInfoDialog(){
-        launchAlert(
-            getResources().getString(R.string.Achievements),
-            getResources().getString(R.string.achievements_info_message));
-    }
-
-    /**
-     * To call the API to get results in form Single<JSONObject>
-     * which then calls parseJson when results are fetched
-     */
-    private void setAchievements() {
-        binding.progressBar.setVisibility(View.VISIBLE);
-        if (checkAccount()) {
-            try{
-
-                compositeDisposable.add(okHttpJsonApiClient
-                    .getAchievements(Objects.requireNonNull(userName))
-                    .subscribeOn(Schedulers.io())
-                    .observeOn(AndroidSchedulers.mainThread())
-                    .subscribe(
-                        response -> {
-                            if (response != null) {
-                                setUploadCount(Achievements.from(response));
-                            } else {
-                                Timber.d("success");
-                                binding.layoutImageReverts.setVisibility(View.INVISIBLE);
-                                binding.achievementBadgeImage.setVisibility(View.INVISIBLE);
-                                // If the number of edits made by the user are more than 150,000
-                                // in some cases such high number of wiki edit counts cause the
-                                // achievements calculator to fail in some cases, for more details
-                                // refer Issue: #3295
-                                if (numberOfEdits <= 150000) {
-                                    showSnackBarWithRetry(false);
-                                } else {
-                                    showSnackBarWithRetry(true);
-                                }
-                            }
-                        },
-                        t -> {
-                            Timber.e(t, "Fetching achievements statistics failed");
-                            if (numberOfEdits <= 150000) {
-                                showSnackBarWithRetry(false);
-                            } else {
-                                showSnackBarWithRetry(true);
-                            }
-                        }
-                    ));
-            }
-            catch (Exception e){
-                Timber.d(e+"success");
-            }
-        }
-    }
-
-    /**
-     * To call the API to fetch the count of wiki data edits
-     *  in the form of JavaRx Single object<JSONobject>
-     */
-    private void setWikidataEditCount() {
-        if (StringUtils.isBlank(userName)) {
-            return;
-        }
-        compositeDisposable.add(okHttpJsonApiClient
-            .getWikidataEdits(userName)
-            .subscribeOn(Schedulers.io())
-            .observeOn(AndroidSchedulers.mainThread())
-            .subscribe(edits -> {
-                numberOfEdits = edits;
-                binding.wikidataEdits.setText(String.valueOf(edits));
-            }, e -> {
-                Timber.e("Error:" + e);
-            }));
-    }
-
-    /**
-     * Shows a snack bar which has an action button which on click dismisses the snackbar and invokes the
-     * listener passed
-     * @param tooManyAchievements if this value is true it means that the number of achievements of the
-     * user are so high that it wrecks havoc with the Achievements calculator due to which request may time
-     * out. Well this is the Ultimate Achievement
-     */
-    private void showSnackBarWithRetry(boolean tooManyAchievements) {
-        if (tooManyAchievements) {
-            binding.progressBar.setVisibility(View.GONE);
-            ViewUtil.showDismissibleSnackBar(getActivity().findViewById(android.R.id.content),
-                R.string.achievements_fetch_failed_ultimate_achievement, R.string.retry, view -> setAchievements());
-        } else {
-            binding.progressBar.setVisibility(View.GONE);
-            ViewUtil.showDismissibleSnackBar(getActivity().findViewById(android.R.id.content),
-                R.string.achievements_fetch_failed, R.string.retry, view -> setAchievements());
-        }
-    }
-
-    /**
-     * Shows a generic error toast when error occurs while loading achievements or uploads
-     */
-    private void onError() {
-        ViewUtil.showLongToast(getActivity(), getResources().getString(R.string.error_occurred));
-        binding.progressBar.setVisibility(View.GONE);
-    }
-
-    /**
-     * used to the count of images uploaded by user
-     */
-    private void setUploadCount(Achievements achievements) {
-        if (checkAccount()) {
-            compositeDisposable.add(okHttpJsonApiClient
-                .getUploadCount(Objects.requireNonNull(userName))
-                .subscribeOn(Schedulers.io())
-                .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(
-                    uploadCount -> setAchievementsUploadCount(achievements, uploadCount),
-                    t -> {
-                        Timber.e(t, "Fetching upload count failed");
-                        onError();
-                    }
-                ));
-        }
-    }
-
-    /**
-     * used to set achievements upload count and call hideProgressbar
-     * @param uploadCount
-     */
-    private void setAchievementsUploadCount(Achievements achievements, int uploadCount) {
-        // Create a new instance of Achievements with updated imagesUploaded
-        Achievements updatedAchievements = new Achievements(
-            achievements.getUniqueUsedImages(),
-            achievements.getArticlesUsingImages(),
-            achievements.getThanksReceived(),
-            achievements.getFeaturedImages(),
-            achievements.getQualityImages(),
-            uploadCount,  // Update imagesUploaded with new value
-            achievements.getRevertCount()
-        );
-
-        hideProgressBar(updatedAchievements);
-    }
-
-    /**
-     * used to the uploaded images progressbar
-     * @param uploadCount
-     */
-    private void setUploadProgress(int uploadCount){
-        if (uploadCount==0){
-            setZeroAchievements();
-        }else {
-            binding.imagesUploadedProgressbar.setVisibility(View.VISIBLE);
-            binding.imagesUploadedProgressbar.setProgress
-                (100*uploadCount/levelInfo.getMaxUploadCount());
-            binding.tvUploadedImages.setText
-                (uploadCount + "/" + levelInfo.getMaxUploadCount());
-        }
-
-    }
-
-    private void setZeroAchievements() {
-        String message = !Objects.equals(sessionManager.getUserName(), userName) ?
-            getString(R.string.no_achievements_yet, userName) :
-            getString(R.string.you_have_no_achievements_yet);
-        DialogUtil.showAlertDialog(getActivity(),
-            null,
-            message,
-            getString(R.string.ok),
-            () -> {},
-            true);
-//        binding.imagesUploadedProgressbar.setVisibility(View.INVISIBLE);
-//        binding.imageRevertsProgressbar.setVisibility(View.INVISIBLE);
-//        binding.imagesUsedByWikiProgressBar.setVisibility(View.INVISIBLE);
-        binding.achievementBadgeImage.setVisibility(View.INVISIBLE);
-        binding.imagesUsedByWikiText.setText(R.string.no_image);
-        binding.imagesRevertedText.setText(R.string.no_image_reverted);
-        binding.imagesUploadTextParam.setText(R.string.no_image_uploaded);
-        binding.achievementBadgeImage.setVisibility(View.INVISIBLE);
-    }
-
-    /**
-     * used to set the non revert image percentage
-     * @param notRevertPercentage
-     */
-    private void setImageRevertPercentage(int notRevertPercentage){
-        binding.imageRevertsProgressbar.setVisibility(View.VISIBLE);
-        binding.imageRevertsProgressbar.setProgress(notRevertPercentage);
-        final String revertPercentage = Integer.toString(notRevertPercentage);
-        binding.tvRevertedImages.setText(revertPercentage + "%");
-        binding.imagesRevertLimitText.setText(getResources().getString(R.string.achievements_revert_limit_message)+ levelInfo.getMinNonRevertPercentage() + "%");
-    }
-
-    /**
-     * Used the inflate the fetched statistics of the images uploaded by user
-     * and assign badge and level. Also stores the achievements level of the user in BasicKvStore to display in menu
-     * @param achievements
-     */
-    private void inflateAchievements(Achievements achievements) {
-//        binding.imagesUsedByWikiProgressBar.setVisibility(View.VISIBLE);
-        binding.thanksReceived.setText(String.valueOf(achievements.getThanksReceived()));
-        binding.imagesUsedByWikiProgressBar.setProgress
-            (100 * achievements.getUniqueUsedImages() / levelInfo.getMaxUniqueImages());
-        binding.tvWikiPb.setText(achievements.getUniqueUsedImages() + "/"
-            + levelInfo.getMaxUniqueImages());
-        binding.imageFeatured.setText(String.valueOf(achievements.getFeaturedImages()));
-        binding.qualityImages.setText(String.valueOf(achievements.getQualityImages()));
-        String levelUpInfoString = getString(R.string.level).toUpperCase(Locale.ROOT);
-        levelUpInfoString += " " + levelInfo.getLevelNumber();
-        binding.achievementLevel.setText(levelUpInfoString);
-        binding.achievementBadgeImage.setImageDrawable(VectorDrawableCompat.create(getResources(), R.drawable.badge,
-            new ContextThemeWrapper(getActivity(), levelInfo.getLevelStyle()).getTheme()));
-        binding.achievementBadgeText.setText(Integer.toString(levelInfo.getLevelNumber()));
-        BasicKvStore store = new BasicKvStore(this.getContext(), userName);
-        store.putString("userAchievementsLevel", Integer.toString(levelInfo.getLevelNumber()));
-    }
-
-    /**
-     * to hide progressbar
-     */
-    private void hideProgressBar(Achievements achievements) {
-        if (binding.progressBar != null) {
-            levelInfo = LevelController.LevelInfo.from(achievements.getImagesUploaded(),
-                achievements.getUniqueUsedImages(),
-                achievements.getNotRevertPercentage());
-            inflateAchievements(achievements);
-            setUploadProgress(achievements.getImagesUploaded());
-            setImageRevertPercentage(achievements.getNotRevertPercentage());
-            binding.progressBar.setVisibility(View.GONE);
-        }
-    }
-
-    protected void showUploadInfo(){
-        launchAlertWithHelpLink(
-            getResources().getString(R.string.images_uploaded),
-            getResources().getString(R.string.images_uploaded_explanation),
-            IMAGES_UPLOADED_URL);
-    }
-
-    protected void showRevertedInfo(){
-        launchAlertWithHelpLink(
-            getResources().getString(R.string.image_reverts),
-            getResources().getString(R.string.images_reverted_explanation),
-            IMAGES_REVERT_URL);
-    }
-
-    protected void showUsedByWikiInfo(){
-        launchAlertWithHelpLink(
-            getResources().getString(R.string.images_used_by_wiki),
-            getResources().getString(R.string.images_used_explanation),
-            IMAGES_USED_URL);
-    }
-
-    protected void showImagesViaNearbyInfo(){
-        launchAlertWithHelpLink(
-            getResources().getString(R.string.statistics_wikidata_edits),
-            getResources().getString(R.string.images_via_nearby_explanation),
-            IMAGES_NEARBY_PLACES_URL);
-    }
-
-    protected void showFeaturedImagesInfo(){
-        launchAlertWithHelpLink(
-            getResources().getString(R.string.statistics_featured),
-            getResources().getString(R.string.images_featured_explanation),
-            IMAGES_FEATURED_URL);
-    }
-
-    protected void showThanksReceivedInfo(){
-        launchAlertWithHelpLink(
-            getResources().getString(R.string.statistics_thanks),
-            getResources().getString(R.string.thanks_received_explanation),
-            THANKS_URL);
-    }
-
-    public void showQualityImagesInfo() {
-        launchAlertWithHelpLink(
-            getResources().getString(R.string.statistics_quality),
-            getResources().getString(R.string.quality_images_info),
-            QUALITY_IMAGE_URL);
-    }
-
-    /**
-     * takes title and message as input to display alerts
-     * @param title
-     * @param message
-     */
-    private void launchAlert(String title, String message){
-        DialogUtil.showAlertDialog(getActivity(),
-            title,
-            message,
-            getString(R.string.ok),
-            () -> {},
-            true);
-    }
-
-    /**
-     *  Launch Alert with a READ MORE button and clicking it open a custom webpage
-     */
-    private void launchAlertWithHelpLink(String title, String message, String helpLinkUrl) {
-        DialogUtil.showAlertDialog(getActivity(),
-            title,
-            message,
-            getString(R.string.ok),
-            getString(R.string.read_help_link),
-            () -> {},
-            () -> Utils.handleWebUrl(requireContext(), Uri.parse(helpLinkUrl)),
-            null,
-            true);
-    }
-
-    /**
-     * check to ensure that user is logged in
-     * @return
-     */
-    private boolean checkAccount(){
-        Account currentAccount = sessionManager.getCurrentAccount();
-        if (currentAccount == null) {
-            Timber.d("Current account is null");
-            ViewUtil.showLongToast(getActivity(), getResources().getString(R.string.user_not_logged_in));
-            sessionManager.forceLogin(getActivity());
-            return false;
-        }
-        return true;
-    }
-}

app/src/main/java/fr/free/nrw/commons/profile/achievements/AchievementsFragment.kt

@@ -0,0 +1,566 @@
+package fr.free.nrw.commons.profile.achievements
+
+import android.net.Uri
+import android.os.Bundle
+import android.util.DisplayMetrics
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.view.ViewTreeObserver
+import android.widget.Toast
+import androidx.appcompat.view.ContextThemeWrapper
+import androidx.constraintlayout.widget.ConstraintLayout
+import androidx.vectordrawable.graphics.drawable.VectorDrawableCompat
+import com.google.android.material.badge.BadgeDrawable
+import com.google.android.material.badge.BadgeUtils
+import com.google.android.material.badge.ExperimentalBadgeUtils
+import fr.free.nrw.commons.R
+import fr.free.nrw.commons.Utils
+import fr.free.nrw.commons.auth.SessionManager
+import fr.free.nrw.commons.databinding.FragmentAchievementsBinding
+import fr.free.nrw.commons.di.CommonsDaggerSupportFragment
+import fr.free.nrw.commons.kvstore.BasicKvStore
+import fr.free.nrw.commons.mwapi.OkHttpJsonApiClient
+import fr.free.nrw.commons.profile.ProfileActivity
+import fr.free.nrw.commons.profile.achievements.LevelController.LevelInfo.Companion.from
+import fr.free.nrw.commons.utils.ConfigUtils.isBetaFlavour
+import fr.free.nrw.commons.utils.DialogUtil.showAlertDialog
+import fr.free.nrw.commons.utils.ViewUtil.showDismissibleSnackBar
+import fr.free.nrw.commons.utils.ViewUtil.showLongToast
+import io.reactivex.android.schedulers.AndroidSchedulers
+import io.reactivex.schedulers.Schedulers
+import org.apache.commons.lang3.StringUtils
+import timber.log.Timber
+import java.util.Objects
+import javax.inject.Inject
+
+class AchievementsFragment : CommonsDaggerSupportFragment(){
+    private lateinit var levelInfo: LevelController.LevelInfo
+
+    @Inject
+    lateinit var sessionManager: SessionManager
+
+    @Inject
+    lateinit var okHttpJsonApiClient: OkHttpJsonApiClient
+
+    private var _binding: FragmentAchievementsBinding? = null
+    private val binding get() = _binding!!
+    // To keep track of the number of wiki edits made by a user
+    private var numberOfEdits: Int = 0
+
+    private var userName: String? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        arguments?.let {
+            userName = it.getString(ProfileActivity.KEY_USERNAME)
+        }
+    }
+
+    override fun onCreateView(
+        inflater: LayoutInflater,
+        container: ViewGroup?,
+        savedInstanceState: Bundle?
+    ): View {
+        _binding = FragmentAchievementsBinding.inflate(inflater, container, false)
+
+        binding.achievementInfo.setOnClickListener { showInfoDialog() }
+        binding.imagesUploadInfoIcon.setOnClickListener { showUploadInfo() }
+        binding.imagesRevertedInfoIcon.setOnClickListener { showRevertedInfo() }
+        binding.imagesUsedByWikiInfoIcon.setOnClickListener { showUsedByWikiInfo() }
+        binding.wikidataEditsIcon.setOnClickListener { showImagesViaNearbyInfo() }
+        binding.featuredImageIcon.setOnClickListener { showFeaturedImagesInfo() }
+        binding.thanksImageIcon.setOnClickListener { showThanksReceivedInfo() }
+        binding.qualityImageIcon.setOnClickListener { showQualityImagesInfo() }
+
+        // DisplayMetrics used to fetch the size of the screen
+        val displayMetrics = DisplayMetrics()
+        requireActivity().windowManager.defaultDisplay.getMetrics(displayMetrics)
+        val height = displayMetrics.heightPixels
+        val width = displayMetrics.widthPixels
+
+        // Used for the setting the size of imageView at runtime
+        // TODO REMOVE
+        val params = binding.achievementBadgeImage.layoutParams as ConstraintLayout.LayoutParams
+        params.height = (height * BADGE_IMAGE_HEIGHT_RATIO).toInt()
+        params.width = (width * BADGE_IMAGE_WIDTH_RATIO).toInt()
+        binding.achievementBadgeImage.requestLayout()
+        binding.progressBar.visibility = View.VISIBLE
+
+        setHasOptionsMenu(true)
+        if (sessionManager.userName == null || sessionManager.userName == userName) {
+            binding.tvAchievementsOfUser.visibility = View.GONE
+        } else {
+            binding.tvAchievementsOfUser.visibility = View.VISIBLE
+            binding.tvAchievementsOfUser.text = getString(R.string.achievements_of_user, userName)
+        }
+        if (isBetaFlavour) {
+            binding.layout.visibility = View.GONE
+            setMenuVisibility(true)
+            return binding.root
+        }
+
+
+        setWikidataEditCount()
+        setAchievements()
+        return binding.root
+
+    }
+
+
+    override fun onDestroyView() {
+        super.onDestroyView()
+        _binding = null
+    }
+
+
+    override fun setMenuVisibility(visible: Boolean) {
+        super.setMenuVisibility(visible)
+
+        // Whenever this fragment is revealed in a menu,
+        // notify Beta users the page data is unavailable
+        if (isBetaFlavour && visible) {
+            val ctx = context ?: view?.context
+            ctx?.let {
+                Toast.makeText(it, R.string.achievements_unavailable_beta, Toast.LENGTH_LONG).show()
+            }
+        }
+    }
+
+    /**
+     * To invoke the AlertDialog on clicking info button
+     */
+    fun showInfoDialog() {
+        launchAlert(
+            resources.getString(R.string.Achievements),
+            resources.getString(R.string.achievements_info_message)
+        )
+    }
+
+
+
+
+    /**
+     * To call the API to get results in form Single<JSONObject>
+     * which then calls parseJson when results are fetched
+     */
+
+    private fun setAchievements() {
+        binding.progressBar.visibility = View.VISIBLE
+        if (checkAccount()) {
+            try {
+                compositeDisposable.add(
+                    okHttpJsonApiClient
+                        .getAchievements(userName ?: return)
+                        .subscribeOn(Schedulers.io())
+                        .observeOn(AndroidSchedulers.mainThread())
+                        .subscribe(
+                            { response ->
+                                if (response != null) {
+                                    setUploadCount(Achievements.from(response))
+                                } else {
+                                    Timber.d("Success")
+                                    // TODO Create a Method to Hide all the Statistics
+//                                    binding.layoutImageReverts.visibility = View.INVISIBLE
+//                                    binding.achievementBadgeImage.visibility = View.INVISIBLE
+                                    // If the number of edits made by the user are more than 150,000
+                                    // in some cases such high number of wiki edit counts cause the
+                                    // achievements calculator to fail in some cases, for more details
+                                    // refer Issue: #3295
+                                    if (numberOfEdits <= 150_000) {
+                                        showSnackBarWithRetry(false)
+                                    } else {
+                                        showSnackBarWithRetry(true)
+                                    }
+                                }
+                            },
+                            { throwable ->
+                                Timber.e(throwable, "Fetching achievements statistics failed")
+                                if (numberOfEdits <= 150_000) {
+                                    showSnackBarWithRetry(false)
+                                } else {
+                                    showSnackBarWithRetry(true)
+                                }
+                            }
+                        )
+                )
+            } catch (e: Exception) {
+                Timber.d("Exception: ${e.message}")
+            }
+        }
+    }
+
+    /**
+     * To call the API to fetch the count of wiki data edits
+     * in the form of JavaRx Single object<JSONobject>
+    </JSONobject> */
+
+    private fun setWikidataEditCount() {
+        if (StringUtils.isBlank(userName)) {
+            return
+        }
+        compositeDisposable.add(
+            okHttpJsonApiClient
+                .getWikidataEdits(userName)
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe({ edits: Int ->
+                    numberOfEdits = edits
+                    showBadgesWithCount(view = binding.wikidataEditsIcon, count = edits)
+                }, { e: Throwable ->
+                    Timber.e("Error:$e")
+                })
+        )
+    }
+
+    /**
+     * Shows a snack bar which has an action button which on click dismisses the snackbar and invokes the
+     * listener passed
+     * @param tooManyAchievements if this value is true it means that the number of achievements of the
+     * user are so high that it wrecks havoc with the Achievements calculator due to which request may time
+     * out. Well this is the Ultimate Achievement
+     */
+    private fun showSnackBarWithRetry(tooManyAchievements: Boolean) {
+        if (tooManyAchievements) {
+            if (view == null) {
+                return
+            }
+            else {
+                binding.progressBar.visibility = View.GONE
+                showDismissibleSnackBar(
+                    requireView().findViewById(android.R.id.content),
+                    R.string.achievements_fetch_failed_ultimate_achievement, R.string.retry
+                ) { setAchievements() }
+            }
+
+        } else {
+            if (view == null) {
+                return
+            }
+            binding.progressBar.visibility = View.GONE
+            showDismissibleSnackBar(
+                requireView().findViewById(android.R.id.content),
+                R.string.achievements_fetch_failed, R.string.retry
+            ) { setAchievements() }
+        }
+    }
+
+    /**
+     * Shows a generic error toast when error occurs while loading achievements or uploads
+     */
+    private fun onError() {
+        showLongToast(requireActivity(), resources.getString(R.string.error_occurred))
+        binding.progressBar.visibility = View.GONE
+    }
+
+    /**
+     * used to the count of images uploaded by user
+     */
+
+    private fun setUploadCount(achievements: Achievements) {
+        if (checkAccount()) {
+            compositeDisposable.add(okHttpJsonApiClient
+                .getUploadCount(Objects.requireNonNull<String>(userName))
+                .subscribeOn(Schedulers.io())
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(
+                    { uploadCount: Int? ->
+                        setAchievementsUploadCount(
+                            achievements,
+                            uploadCount ?:0
+                        )
+                    },
+                    { t: Throwable? ->
+                        Timber.e(t, "Fetching upload count failed")
+                        onError()
+                    }
+                ))
+        }
+    }
+
+    /**
+     * used to set achievements upload count and call hideProgressbar
+     * @param uploadCount
+     */
+    private fun setAchievementsUploadCount(achievements: Achievements, uploadCount: Int) {
+        // Create a new instance of Achievements with updated imagesUploaded
+        val updatedAchievements = Achievements(
+            achievements.uniqueUsedImages,
+            achievements.articlesUsingImages,
+            achievements.thanksReceived,
+            achievements.featuredImages,
+            achievements.qualityImages,
+            uploadCount,  // Update imagesUploaded with new value
+            achievements.revertCount
+        )
+
+        hideProgressBar(updatedAchievements)
+    }
+
+    /**
+     * used to the uploaded images progressbar
+     * @param uploadCount
+     */
+    private fun setUploadProgress(uploadCount: Int) {
+        if (uploadCount == 0) {
+            setZeroAchievements()
+        } else {
+            binding.imagesUploadedProgressbar.visibility = View.VISIBLE
+            binding.imagesUploadedProgressbar.progress =
+                100 * uploadCount / levelInfo.maxUploadCount
+            binding.imageUploadedTVCount.text = uploadCount.toString() + "/" + levelInfo.maxUploadCount
+        }
+    }
+
+    private fun setZeroAchievements() {
+        val message = if (sessionManager.userName != userName) {
+            getString(R.string.no_achievements_yet, userName )
+        } else {
+            getString(R.string.you_have_no_achievements_yet)
+        }
+        showAlertDialog(
+            requireActivity(),
+            null,
+            message,
+            getString(R.string.ok),
+            {},
+            true
+        )
+
+//        binding.imagesUploadedProgressbar.setVisibility(View.INVISIBLE);
+//        binding.imageRevertsProgressbar.setVisibility(View.INVISIBLE);
+//        binding.imagesUsedByWikiProgressBar.setVisibility(View.INVISIBLE);
+        //binding.achievementBadgeImage.visibility = View.INVISIBLE // TODO
+        binding.imagesUsedCount.setText(R.string.no_image)
+        binding.imagesRevertedText.setText(R.string.no_image_reverted)
+        binding.imagesUploadTextParam.setText(R.string.no_image_uploaded)
+    }
+
+    /**
+     * used to set the non revert image percentage
+     * @param notRevertPercentage
+     */
+    private fun setImageRevertPercentage(notRevertPercentage: Int) {
+        binding.imageRevertsProgressbar.visibility = View.VISIBLE
+        binding.imageRevertsProgressbar.progress = notRevertPercentage
+        val revertPercentage = notRevertPercentage.toString()
+        binding.imageRevertTVCount.text = "$revertPercentage%"
+        binding.imagesRevertLimitText.text =
+            resources.getString(R.string.achievements_revert_limit_message) + levelInfo.minNonRevertPercentage + "%"
+    }
+
+    /**
+     * Used the inflate the fetched statistics of the images uploaded by user
+     * and assign badge and level. Also stores the achievements level of the user in BasicKvStore to display in menu
+     * @param achievements
+     */
+    private fun inflateAchievements(achievements: Achievements) {
+
+        // Thanks Received Badge
+        showBadgesWithCount(view = binding.thanksImageIcon, count =  achievements.thanksReceived)
+
+        // Featured Images Badge
+        showBadgesWithCount(view = binding.featuredImageIcon, count =  achievements.featuredImages)
+
+        // Quality Images Badge
+        showBadgesWithCount(view = binding.qualityImageIcon, count =  achievements.qualityImages)
+
+        binding.imagesUsedByWikiProgressBar.progress =
+            100 * achievements.uniqueUsedImages / levelInfo.maxUniqueImages
+        binding.imagesUsedCount.text = (achievements.uniqueUsedImages.toString() + "/"
+                + levelInfo.maxUniqueImages)
+
+        binding.achievementLevel.text = getString(R.string.level,levelInfo.levelNumber)
+        binding.achievementBadgeImage.setImageDrawable(
+            VectorDrawableCompat.create(
+                resources, R.drawable.badge,
+                ContextThemeWrapper(activity, levelInfo.levelStyle).theme
+            )
+        )
+        binding.achievementBadgeText.text = levelInfo.levelNumber.toString()
+        val store = BasicKvStore(requireContext(), userName)
+        store.putString("userAchievementsLevel", levelInfo.levelNumber.toString())
+    }
+
+    /**
+     * This function is used to show badge on any view (button, imageView, etc)
+     * @param view The View on which the badge will be displayed eg (button, imageView, etc)
+     * @param count The number to be displayed inside the badge.
+     * @param backgroundColor The badge background color. Default is R.attr.colorPrimary
+     * @param badgeTextColor The badge text color. Default is R.attr.colorPrimary
+     * @param badgeGravity The position of the badge [TOP_END,TOP_START,BOTTOM_END,BOTTOM_START]. Default is TOP_END
+     * @return if the number is 0, then it will not create badge for it and hide the view
+     * @see https://developer.android.com/reference/com/google/android/material/badge/BadgeDrawable
+     */
+
+    private fun showBadgesWithCount(
+        view: View,
+        count: Int,
+        backgroundColor: Int = R.attr.colorPrimary,
+        badgeTextColor: Int = R.attr.textEnabled,
+        badgeGravity: Int = BadgeDrawable.TOP_END
+    ) {
+        //https://stackoverflow.com/a/67742035
+        if (count == 0) {
+            view.visibility = View.GONE
+            return
+        }
+
+        view.viewTreeObserver.addOnGlobalLayoutListener(object :
+            ViewTreeObserver.OnGlobalLayoutListener {
+            /**
+             * Callback method to be invoked when the global layout state or the visibility of views
+             * within the view tree changes
+             */
+            @ExperimentalBadgeUtils
+            override fun onGlobalLayout() {
+                view.visibility = View.VISIBLE
+                val badgeDrawable = BadgeDrawable.create(requireActivity())
+                badgeDrawable.number = count
+                badgeDrawable.badgeGravity = badgeGravity
+                badgeDrawable.badgeTextColor = badgeTextColor
+                badgeDrawable.backgroundColor = backgroundColor
+                BadgeUtils.attachBadgeDrawable(badgeDrawable, view)
+                view.getViewTreeObserver().removeOnGlobalLayoutListener(this)
+            }
+        })
+    }
+
+    /**
+     * to hide progressbar
+     */
+    private fun hideProgressBar(achievements: Achievements) {
+        if (binding.progressBar != null) {
+            levelInfo = from(
+                achievements.imagesUploaded,
+                achievements.uniqueUsedImages,
+                achievements.notRevertPercentage
+            )
+            inflateAchievements(achievements)
+            setUploadProgress(achievements.imagesUploaded)
+            setImageRevertPercentage(achievements.notRevertPercentage)
+            binding.progressBar.visibility = View.GONE
+        }
+    }
+
+    fun showUploadInfo() {
+        launchAlertWithHelpLink(
+            resources.getString(R.string.images_uploaded),
+            resources.getString(R.string.images_uploaded_explanation),
+            IMAGES_UPLOADED_URL
+        )
+    }
+
+    fun showRevertedInfo() {
+        launchAlertWithHelpLink(
+            resources.getString(R.string.image_reverts),
+            resources.getString(R.string.images_reverted_explanation),
+            IMAGES_REVERT_URL
+        )
+    }
+
+    fun showUsedByWikiInfo() {
+        launchAlertWithHelpLink(
+            resources.getString(R.string.images_used_by_wiki),
+            resources.getString(R.string.images_used_explanation),
+            IMAGES_USED_URL
+        )
+    }
+
+    fun showImagesViaNearbyInfo() {
+        launchAlertWithHelpLink(
+            resources.getString(R.string.statistics_wikidata_edits),
+            resources.getString(R.string.images_via_nearby_explanation),
+            IMAGES_NEARBY_PLACES_URL
+        )
+    }
+
+    fun showFeaturedImagesInfo() {
+        launchAlertWithHelpLink(
+            resources.getString(R.string.statistics_featured),
+            resources.getString(R.string.images_featured_explanation),
+            IMAGES_FEATURED_URL
+        )
+    }
+
+    fun showThanksReceivedInfo() {
+        launchAlertWithHelpLink(
+            resources.getString(R.string.statistics_thanks),
+            resources.getString(R.string.thanks_received_explanation),
+            THANKS_URL
+        )
+    }
+
+    fun showQualityImagesInfo() {
+        launchAlertWithHelpLink(
+            resources.getString(R.string.statistics_quality),
+            resources.getString(R.string.quality_images_info),
+            QUALITY_IMAGE_URL
+        )
+    }
+
+    /**
+     * takes title and message as input to display alerts
+     * @param title
+     * @param message
+     */
+    private fun launchAlert(title: String, message: String) {
+        showAlertDialog(
+            requireActivity(),
+            title,
+            message,
+            getString(R.string.ok),
+            {},
+            true
+        )
+    }
+
+    /**
+     * Launch Alert with a READ MORE button and clicking it open a custom webpage
+     */
+    private fun launchAlertWithHelpLink(title: String, message: String, helpLinkUrl: String) {
+        showAlertDialog(
+            requireActivity(),
+            title,
+            message,
+            getString(R.string.ok),
+            getString(R.string.read_help_link),
+            {},
+            { Utils.handleWebUrl(requireContext(), Uri.parse(helpLinkUrl)) },
+            null,
+            true
+        )
+    }
+    /**
+     * check to ensure that user is logged in
+     * @return
+     */
+    private fun checkAccount(): Boolean {
+        val currentAccount = sessionManager.currentAccount
+        if (currentAccount == null) {
+            Timber.d("Current account is null")
+            showLongToast(requireActivity(), resources.getString(R.string.user_not_logged_in))
+            sessionManager.forceLogin(activity)
+            return false
+        }
+        return true
+    }
+
+
+
+    companion object{
+        private const val BADGE_IMAGE_WIDTH_RATIO = 0.4
+        private const val BADGE_IMAGE_HEIGHT_RATIO = 0.3
+
+        /**
+         * Help link URLs
+         */
+        private const val IMAGES_UPLOADED_URL = "https://commons.wikimedia.org/wiki/Commons:Project_scope"
+        private const val IMAGES_REVERT_URL = "https://commons.wikimedia.org/wiki/Commons:Deletion_policy#Reasons_for_deletion"
+        private const val IMAGES_USED_URL = "https://en.wikipedia.org/wiki/Wikipedia:Manual_of_Style/Images"
+        private const val IMAGES_NEARBY_PLACES_URL = "https://www.wikidata.org/wiki/Property:P18"
+        private const val IMAGES_FEATURED_URL = "https://commons.wikimedia.org/wiki/Commons:Featured_pictures"
+        private const val QUALITY_IMAGE_URL = "https://commons.wikimedia.org/wiki/Commons:Quality_images"
+        private const val THANKS_URL = "https://www.mediawiki.org/wiki/Extension:Thanks"
+    }
+}

app/src/main/java/fr/free/nrw/commons/review/ReviewActivity.kt

@@ -201,7 +201,7 @@ class ReviewActivity : BaseActivity() {
                     val caption = getString(
                         R.string.review_is_uploaded_by,
                         fileName,
-                        revision.user
+                        revision.user()
                     )
                     binding.tvImageCaption.text = caption
                     binding.pbReviewImage.visibility = View.GONE

app/src/main/java/fr/free/nrw/commons/review/ReviewController.kt

@@ -12,7 +12,6 @@ import fr.free.nrw.commons.auth.csrf.InvalidLoginTokenException
 import fr.free.nrw.commons.wikidata.mwapi.MwQueryPage
 
 import java.util.ArrayList
-import java.util.concurrent.Callable
 
 import javax.inject.Inject
 import javax.inject.Named
@@ -27,7 +26,6 @@ import fr.free.nrw.commons.delete.DeleteHelper
 import fr.free.nrw.commons.di.ApplicationlessInjection
 import fr.free.nrw.commons.utils.ViewUtil
 import io.reactivex.Observable
-import io.reactivex.ObservableSource
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.schedulers.Schedulers
 import timber.log.Timber
@@ -175,7 +173,7 @@ class ReviewController @Inject constructor(
         if (firstRevision == null) return
 
         Observable.defer {
-            thanksClient.thank(firstRevision!!.revisionId)
+            thanksClient.thank(firstRevision!!.revisionId())
         }
             .subscribeOn(Schedulers.io())
             .observeOn(AndroidSchedulers.mainThread())

app/src/main/java/fr/free/nrw/commons/review/ReviewHelper.kt

@@ -34,7 +34,7 @@ class ReviewHelper
             reviewInterface
                 .getRecentChanges()
                 .map { it.query()?.pages() }
-                .map(MutableList<MwQueryPage>::shuffled)
+                .map { it.shuffled() }
                 .flatMapIterable { changes: List<MwQueryPage>? -> changes }
                 .filter { isChangeReviewable(it) }
 

app/src/main/java/fr/free/nrw/commons/review/ReviewImageFragment.kt

@@ -3,18 +3,15 @@ package fr.free.nrw.commons.review
 import android.graphics.Color
 import android.os.Bundle
 import android.text.Html
-import android.text.TextUtils
 import android.view.LayoutInflater
 import android.view.View
 import android.view.ViewGroup
 import fr.free.nrw.commons.CommonsApplication
-import fr.free.nrw.commons.Media
 import fr.free.nrw.commons.R
 import fr.free.nrw.commons.auth.SessionManager
 import fr.free.nrw.commons.auth.csrf.InvalidLoginTokenException
 import fr.free.nrw.commons.databinding.FragmentReviewImageBinding
 import fr.free.nrw.commons.di.CommonsDaggerSupportFragment
-import java.util.ArrayList
 import javax.inject.Inject
 
 
@@ -126,7 +123,7 @@ class ReviewImageFragment : CommonsDaggerSupportFragment() {
                 enableButtons()
                 question = getString(R.string.review_thanks)
 
-                user = reviewActivity.reviewController.firstRevision?.user
+                user = reviewActivity.reviewController.firstRevision?.user()
                     ?: savedInstanceState?.getString(SAVED_USER)
 
                 //if the user is null because of whatsoever reason, review will not be sent anyways

app/src/main/java/fr/free/nrw/commons/settings/SettingsFragment.kt

@@ -38,6 +38,7 @@ import fr.free.nrw.commons.campaigns.CampaignView
 import fr.free.nrw.commons.contributions.ContributionController
 import fr.free.nrw.commons.contributions.MainActivity
 import fr.free.nrw.commons.di.ApplicationlessInjection
+import fr.free.nrw.commons.filepicker.FilePicker
 import fr.free.nrw.commons.kvstore.JsonKvStore
 import fr.free.nrw.commons.location.LocationServiceManager
 import fr.free.nrw.commons.logging.CommonsLogSender
@@ -83,9 +84,17 @@ class SettingsFragment : PreferenceFragmentCompat() {
 
     private val cameraPickLauncherForResult: ActivityResultLauncher<Intent> =
         registerForActivityResult(StartActivityForResult()) { result ->
-        contributionController.handleActivityResultWithCallback(requireActivity()) { callbacks ->
+        contributionController.handleActivityResultWithCallback(
-            contributionController.onPictureReturnedFromCamera(result, requireActivity(), callbacks)
+            requireActivity(),
+            object: FilePicker.HandleActivityResult {
+                override fun onHandleActivityResult(callbacks: FilePicker.Callbacks) {
+                    contributionController.onPictureReturnedFromCamera(
+                        result,
+                        requireActivity(),
+                        callbacks
+                    )
                 }
+        })
     }
 
     /**

app/src/main/java/fr/free/nrw/commons/upload/FileProcessor.kt

@@ -194,7 +194,7 @@ class FileProcessor
             requireNotNull(imageCoordinates.decimalCoords)
             compositeDisposable.add(
                 apiCall
-                    .request(imageCoordinates.decimalCoords)
+                    .request(imageCoordinates.decimalCoords!!)
                     .subscribeOn(Schedulers.io())
                     .observeOn(Schedulers.io())
                     .subscribe(
@@ -220,7 +220,7 @@ class FileProcessor
                 .concatMap {
                     Observable.fromCallable {
                         okHttpJsonApiClient.getNearbyPlaces(
-                            imageCoordinates.latLng,
+                            imageCoordinates.latLng!!,
                             Locale.getDefault().language,
                             it,
                         )

app/src/main/java/fr/free/nrw/commons/upload/UploadClient.kt

@@ -270,7 +270,7 @@ class UploadClient
                         if (uploadResult.upload == null) {
                             val exception = gson.fromJson(uploadResponse, MwException::class.java)
                             Timber.e(exception, "Error in uploading file from stash")
-                            throw Exception(exception.getErrorCode())
+                            throw Exception(exception.errorCode)
                         }
                         uploadResult.upload
                     }

app/src/main/java/fr/free/nrw/commons/upload/worker/UploadWorker.kt

@@ -496,14 +496,14 @@ class UploadWorker(
 
                 withContext(Dispatchers.Main) {
                     wikidataEditService.handleImageClaimResult(
-                        contribution.wikidataPlace,
+                        contribution.wikidataPlace!!,
                         revisionID,
                     )
                 }
             } else {
                 withContext(Dispatchers.Main) {
                     wikidataEditService.handleImageClaimResult(
-                        contribution.wikidataPlace,
+                        contribution.wikidataPlace!!,
                         null,
                     )
                 }

app/src/main/java/fr/free/nrw/commons/utils/CustomSelectorUtils.kt

@@ -63,7 +63,7 @@ class CustomSelectorUtils {
                 fileProcessor.redactExifTags(exifInterface, fileProcessor.getExifTagsToRedact())
                 val sha1 =
                     fileUtilsWrapper.getSHA1(
-                        fileUtilsWrapper.getFileInputStream(uploadableFile.filePath),
+                        fileUtilsWrapper.getFileInputStream(uploadableFile.getFilePath()),
                     )
                 uploadableFile.file.delete()
                 sha1

app/src/main/java/fr/free/nrw/commons/wikidata/CommonsServiceFactory.kt

@@ -10,11 +10,10 @@ class CommonsServiceFactory(
 ) {
     val builder: Retrofit.Builder by lazy {
         // All instances of retrofit share this configuration, but create it lazily
-        Retrofit
+        Retrofit.Builder()
-            .Builder()
             .client(okHttpClient)
             .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
-            .addConverterFactory(GsonConverterFactory.create(GsonUtil.getDefaultGson()))
+            .addConverterFactory(GsonConverterFactory.create(GsonUtil.defaultGson))
     }
 
     val retrofitCache: MutableMap<String, Retrofit> = mutableMapOf()

app/src/main/java/fr/free/nrw/commons/wikidata/GsonUtil.java

@@ -1,34 +0,0 @@
-package fr.free.nrw.commons.wikidata;
-
-import android.net.Uri;
-import com.google.gson.Gson;
-import com.google.gson.GsonBuilder;
-import fr.free.nrw.commons.wikidata.json.RequiredFieldsCheckOnReadTypeAdapterFactory;
-import fr.free.nrw.commons.wikidata.model.DataValue;
-import fr.free.nrw.commons.wikidata.model.WikiSite;
-import fr.free.nrw.commons.wikidata.json.NamespaceTypeAdapter;
-import fr.free.nrw.commons.wikidata.json.PostProcessingTypeAdapter;
-import fr.free.nrw.commons.wikidata.json.UriTypeAdapter;
-import fr.free.nrw.commons.wikidata.json.WikiSiteTypeAdapter;
-import fr.free.nrw.commons.wikidata.model.page.Namespace;
-
-public final class GsonUtil {
-    private static final String DATE_FORMAT = "MMM dd, yyyy HH:mm:ss";
-
-    private static final GsonBuilder DEFAULT_GSON_BUILDER = new GsonBuilder()
-            .setDateFormat(DATE_FORMAT)
-            .registerTypeAdapterFactory(DataValue.getPolymorphicTypeAdapter())
-            .registerTypeHierarchyAdapter(Uri.class, new UriTypeAdapter().nullSafe())
-            .registerTypeHierarchyAdapter(Namespace.class, new NamespaceTypeAdapter().nullSafe())
-            .registerTypeAdapter(WikiSite.class, new WikiSiteTypeAdapter().nullSafe())
-            .registerTypeAdapterFactory(new RequiredFieldsCheckOnReadTypeAdapterFactory())
-            .registerTypeAdapterFactory(new PostProcessingTypeAdapter());
-
-    private static final Gson DEFAULT_GSON = DEFAULT_GSON_BUILDER.create();
-
-    public static Gson getDefaultGson() {
-        return DEFAULT_GSON;
-    }
-
-    private GsonUtil() { }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/GsonUtil.kt

@@ -0,0 +1,29 @@
+package fr.free.nrw.commons.wikidata
+
+import android.net.Uri
+import com.google.gson.Gson
+import com.google.gson.GsonBuilder
+import fr.free.nrw.commons.wikidata.json.NamespaceTypeAdapter
+import fr.free.nrw.commons.wikidata.json.PostProcessingTypeAdapter
+import fr.free.nrw.commons.wikidata.json.RequiredFieldsCheckOnReadTypeAdapterFactory
+import fr.free.nrw.commons.wikidata.json.UriTypeAdapter
+import fr.free.nrw.commons.wikidata.json.WikiSiteTypeAdapter
+import fr.free.nrw.commons.wikidata.model.DataValue.Companion.polymorphicTypeAdapter
+import fr.free.nrw.commons.wikidata.model.WikiSite
+import fr.free.nrw.commons.wikidata.model.page.Namespace
+
+object GsonUtil {
+    private const val DATE_FORMAT = "MMM dd, yyyy HH:mm:ss"
+
+    private val DEFAULT_GSON_BUILDER: GsonBuilder by lazy {
+        GsonBuilder().setDateFormat(DATE_FORMAT)
+            .registerTypeAdapterFactory(polymorphicTypeAdapter)
+            .registerTypeHierarchyAdapter(Uri::class.java, UriTypeAdapter().nullSafe())
+            .registerTypeHierarchyAdapter(Namespace::class.java, NamespaceTypeAdapter().nullSafe())
+            .registerTypeAdapter(WikiSite::class.java, WikiSiteTypeAdapter().nullSafe())
+            .registerTypeAdapterFactory(RequiredFieldsCheckOnReadTypeAdapterFactory())
+            .registerTypeAdapterFactory(PostProcessingTypeAdapter())
+    }
+
+    val defaultGson: Gson by lazy { DEFAULT_GSON_BUILDER.create() }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataConstants.java

@@ -1,11 +0,0 @@
-package fr.free.nrw.commons.wikidata;
-
-public class WikidataConstants {
-    public static final String PLACE_OBJECT = "place";
-    public static final String BOOKMARKS_ITEMS = "bookmarks.items";
-    public static final String SELECTED_NEARBY_PLACE = "selected.nearby.place";
-    public static final String SELECTED_NEARBY_PLACE_CATEGORY = "selected.nearby.place.category";
-
-    public static final String MW_API_PREFIX = "w/api.php?format=json&formatversion=2&errorformat=plaintext&";
-    public static final String WIKIPEDIA_URL = "https://wikipedia.org/";
-}

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataConstants.kt

@@ -0,0 +1,11 @@
+package fr.free.nrw.commons.wikidata
+
+object WikidataConstants {
+    const val PLACE_OBJECT: String = "place"
+    const val BOOKMARKS_ITEMS: String = "bookmarks.items"
+    const val SELECTED_NEARBY_PLACE: String = "selected.nearby.place"
+    const val SELECTED_NEARBY_PLACE_CATEGORY: String = "selected.nearby.place.category"
+
+    const val MW_API_PREFIX: String = "w/api.php?format=json&formatversion=2&errorformat=plaintext&"
+    const val WIKIPEDIA_URL: String = "https://wikipedia.org/"
+}

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataEditListener.java

@@ -1,16 +0,0 @@
-package fr.free.nrw.commons.wikidata;
-
-public abstract class WikidataEditListener {
-
-    protected WikidataP18EditListener wikidataP18EditListener;
-
-    public abstract void onSuccessfulWikidataEdit();
-
-    public void setAuthenticationStateListener(WikidataP18EditListener wikidataP18EditListener) {
-        this.wikidataP18EditListener = wikidataP18EditListener;
-    }
-
-    public interface WikidataP18EditListener {
-        void onWikidataEditSuccessful();
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataEditListener.kt

@@ -0,0 +1,11 @@
+package fr.free.nrw.commons.wikidata
+
+abstract class WikidataEditListener {
+    var authenticationStateListener: WikidataP18EditListener? = null
+
+    abstract fun onSuccessfulWikidataEdit()
+
+    interface WikidataP18EditListener {
+        fun onWikidataEditSuccessful()
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataEditListenerImpl.java

@@ -1,20 +0,0 @@
-package fr.free.nrw.commons.wikidata;
-
-/**
- * Listener for wikidata edits
- */
-public class WikidataEditListenerImpl extends WikidataEditListener {
-
-    public WikidataEditListenerImpl() {
-    }
-
-    /**
-     * Fired when wikidata P18 edit is successful. If there's an active listener, then it is fired
-     */
-    @Override
-    public void onSuccessfulWikidataEdit() {
-        if (wikidataP18EditListener != null) {
-            wikidataP18EditListener.onWikidataEditSuccessful();
-        }
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataEditListenerImpl.kt

@@ -0,0 +1,13 @@
+package fr.free.nrw.commons.wikidata
+
+/**
+ * Listener for wikidata edits
+ */
+class WikidataEditListenerImpl : WikidataEditListener() {
+    /**
+     * Fired when wikidata P18 edit is successful. If there's an active listener, then it is fired
+     */
+    override fun onSuccessfulWikidataEdit() {
+        authenticationStateListener?.onWikidataEditSuccessful()
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataEditService.java

@@ -1,271 +0,0 @@
-package fr.free.nrw.commons.wikidata;
-
-
-import static fr.free.nrw.commons.media.MediaClientKt.PAGE_ID_PREFIX;
-
-import android.annotation.SuppressLint;
-import android.content.Context;
-import androidx.annotation.Nullable;
-import com.google.gson.Gson;
-import fr.free.nrw.commons.R;
-import fr.free.nrw.commons.contributions.Contribution;
-import fr.free.nrw.commons.kvstore.JsonKvStore;
-import fr.free.nrw.commons.upload.UploadResult;
-import fr.free.nrw.commons.upload.WikidataItem;
-import fr.free.nrw.commons.upload.WikidataPlace;
-import fr.free.nrw.commons.utils.ConfigUtils;
-import fr.free.nrw.commons.utils.ViewUtil;
-import fr.free.nrw.commons.wikidata.model.DataValue;
-import fr.free.nrw.commons.wikidata.model.DataValue.ValueString;
-import fr.free.nrw.commons.wikidata.model.EditClaim;
-import fr.free.nrw.commons.wikidata.model.RemoveClaim;
-import fr.free.nrw.commons.wikidata.model.SnakPartial;
-import fr.free.nrw.commons.wikidata.model.StatementPartial;
-import fr.free.nrw.commons.wikidata.model.WikiBaseMonolingualTextValue;
-import fr.free.nrw.commons.wikidata.mwapi.MwPostResponse;
-import io.reactivex.Observable;
-import io.reactivex.schedulers.Schedulers;
-import java.util.ArrayList;
-import java.util.Arrays;
-import java.util.Collections;
-import java.util.List;
-import java.util.Locale;
-import java.util.Map;
-import java.util.UUID;
-import javax.inject.Inject;
-import javax.inject.Named;
-import javax.inject.Singleton;
-import timber.log.Timber;
-
-/**
- * This class is meant to handle the Wikidata edits made through the app It will talk with MediaWiki
- * Apis to make the necessary calls, log the edits and fire listeners on successful edits
- */
-@Singleton
-public class WikidataEditService {
-
-    public static final String COMMONS_APP_TAG = "wikimedia-commons-app";
-
-    private final Context context;
-    private final WikidataEditListener wikidataEditListener;
-    private final JsonKvStore directKvStore;
-    private final WikiBaseClient wikiBaseClient;
-    private final WikidataClient wikidataClient;
-    private final Gson gson;
-
-    @Inject
-    public WikidataEditService(final Context context,
-        final WikidataEditListener wikidataEditListener,
-        @Named("default_preferences") final JsonKvStore directKvStore,
-        final WikiBaseClient wikiBaseClient,
-        final WikidataClient wikidataClient, final Gson gson) {
-        this.context = context;
-        this.wikidataEditListener = wikidataEditListener;
-        this.directKvStore = directKvStore;
-        this.wikiBaseClient = wikiBaseClient;
-        this.wikidataClient = wikidataClient;
-        this.gson = gson;
-    }
-
-    /**
-     * Edits the wikibase entity by adding DEPICTS property. Adding DEPICTS property requires call
-     * to the wikibase API to set tag against the entity.
-     */
-    @SuppressLint("CheckResult")
-    private Observable<Boolean> addDepictsProperty(
-        final String fileEntityId,
-        final List<String> depictedItems
-    ) {
-        final EditClaim data = editClaim(
-            ConfigUtils.isBetaFlavour() ? Collections.singletonList("Q10")
-                // Wikipedia:Sandbox (Q10)
-                : depictedItems
-        );
-
-        return wikiBaseClient.postEditEntity(PAGE_ID_PREFIX + fileEntityId, gson.toJson(data))
-            .doOnNext(success -> {
-                if (success) {
-                    Timber.d("DEPICTS property was set successfully for %s", fileEntityId);
-                } else {
-                    Timber.d("Unable to set DEPICTS property for %s", fileEntityId);
-                }
-            })
-            .doOnError(throwable -> {
-                Timber.e(throwable, "Error occurred while setting DEPICTS property");
-                ViewUtil.showLongToast(context, throwable.toString());
-            })
-            .subscribeOn(Schedulers.io());
-    }
-
-    /**
-     * Takes depicts ID as a parameter and create a uploadable data with the Id
-     * and send the data for POST operation
-     *
-     * @param fileEntityId ID of the file
-     * @param depictedItems IDs of the selected depict item
-     * @return Observable<Boolean>
-     */
-    @SuppressLint("CheckResult")
-    public Observable<Boolean> updateDepictsProperty(
-        final String fileEntityId,
-        final List<String> depictedItems
-    ) {
-        final String entityId = PAGE_ID_PREFIX + fileEntityId;
-        final List<String> claimIds = getDepictionsClaimIds(entityId);
-
-        final RemoveClaim data = removeClaim( /* Please consider removeClaim scenario for BetaDebug */
-            ConfigUtils.isBetaFlavour() ? Collections.singletonList("Q10")
-                // Wikipedia:Sandbox (Q10)
-                : claimIds
-        );
-
-        return wikiBaseClient.postDeleteClaims(entityId, gson.toJson(data))
-            .doOnError(throwable -> {
-                Timber.e(throwable, "Error occurred while removing existing claims for DEPICTS property");
-                ViewUtil.showLongToast(context, context.getString(R.string.wikidata_edit_failure));
-            }).switchMap(success-> {
-                if(success) {
-                    Timber.d("DEPICTS property was deleted successfully");
-                    return addDepictsProperty(fileEntityId, depictedItems);
-                } else {
-                    Timber.d("Unable to delete DEPICTS property");
-                    return Observable.empty();
-                }
-            });
-    }
-
-    @SuppressLint("CheckResult")
-    private List<String> getDepictionsClaimIds(final String entityId) {
-        return wikiBaseClient.getClaimIdsByProperty(entityId, WikidataProperties.DEPICTS.getPropertyName())
-            .subscribeOn(Schedulers.io())
-            .blockingFirst();
-    }
-
-    private EditClaim editClaim(final List<String> entityIds) {
-        return EditClaim.from(entityIds, WikidataProperties.DEPICTS.getPropertyName());
-    }
-
-    private RemoveClaim removeClaim(final List<String> claimIds) {
-        return RemoveClaim.from(claimIds);
-    }
-
-    /**
-     * Show a success toast when the edit is made successfully
-     */
-    private void showSuccessToast(final String wikiItemName) {
-        final String successStringTemplate = context.getString(R.string.successful_wikidata_edit);
-        final String successMessage = String
-            .format(Locale.getDefault(), successStringTemplate, wikiItemName);
-        ViewUtil.showLongToast(context, successMessage);
-    }
-
-    /**
-     * Adds label to Wikidata using the fileEntityId and the edit token, obtained from
-     * csrfTokenClient
-     *
-     * @param fileEntityId
-     * @return
-     */
-    @SuppressLint("CheckResult")
-    private Observable<Boolean> addCaption(final long fileEntityId, final String languageCode,
-        final String captionValue) {
-        return wikiBaseClient.addLabelsToWikidata(fileEntityId, languageCode, captionValue)
-            .doOnNext(mwPostResponse -> onAddCaptionResponse(fileEntityId, mwPostResponse))
-            .doOnError(throwable -> {
-                Timber.e(throwable, "Error occurred while setting Captions");
-                ViewUtil.showLongToast(context, context.getString(R.string.wikidata_edit_failure));
-            })
-            .map(mwPostResponse -> mwPostResponse != null);
-    }
-
-    private void onAddCaptionResponse(Long fileEntityId, MwPostResponse response) {
-        if (response != null) {
-            Timber.d("Caption successfully set, revision id = %s", response);
-        } else {
-            Timber.d("Error occurred while setting Captions, fileEntityId = %s", fileEntityId);
-        }
-    }
-
-    public Long createClaim(@Nullable final WikidataPlace wikidataPlace, final String fileName,
-        final Map<String, String> captions) {
-        if (!(directKvStore.getBoolean("Picture_Has_Correct_Location", true))) {
-            Timber
-                .d("Image location and nearby place location mismatched, so Wikidata item won't be edited");
-            return null;
-        }
-        return addImageAndMediaLegends(wikidataPlace, fileName, captions);
-    }
-
-    public Long addImageAndMediaLegends(final WikidataItem wikidataItem, final String fileName,
-        final Map<String, String> captions) {
-        final SnakPartial p18 = new SnakPartial("value",
-            WikidataProperties.IMAGE.getPropertyName(),
-            new ValueString(fileName.replace("File:", "")));
-
-        final List<SnakPartial> snaks = new ArrayList<>();
-        for (final Map.Entry<String, String> entry : captions.entrySet()) {
-            snaks.add(new SnakPartial("value",
-                WikidataProperties.MEDIA_LEGENDS.getPropertyName(), new DataValue.MonoLingualText(
-                new WikiBaseMonolingualTextValue(entry.getValue(), entry.getKey()))));
-        }
-
-        final String id = wikidataItem.getId() + "$" + UUID.randomUUID().toString();
-        final StatementPartial claim = new StatementPartial(p18, "statement", "normal", id,
-            Collections.singletonMap(WikidataProperties.MEDIA_LEGENDS.getPropertyName(), snaks),
-            Arrays.asList(WikidataProperties.MEDIA_LEGENDS.getPropertyName()));
-
-        return wikidataClient.setClaim(claim, COMMONS_APP_TAG).blockingSingle();
-    }
-
-    public void handleImageClaimResult(final WikidataItem wikidataItem, final Long revisionId) {
-        if (revisionId != null) {
-            if (wikidataEditListener != null) {
-                wikidataEditListener.onSuccessfulWikidataEdit();
-            }
-            showSuccessToast(wikidataItem.getName());
-        } else {
-            Timber.d("Unable to make wiki data edit for entity %s", wikidataItem);
-            ViewUtil.showLongToast(context, context.getString(R.string.wikidata_edit_failure));
-        }
-    }
-
-    public Observable<Boolean> addDepictionsAndCaptions(
-        final UploadResult uploadResult,
-        final Contribution contribution
-    ) {
-        return wikiBaseClient.getFileEntityId(uploadResult)
-            .doOnError(throwable -> {
-                Timber
-                    .e(throwable, "Error occurred while getting EntityID to set DEPICTS property");
-                ViewUtil.showLongToast(context, context.getString(R.string.wikidata_edit_failure));
-            })
-            .switchMap(fileEntityId -> {
-                    if (fileEntityId != null) {
-                        Timber.d("EntityId for image was received successfully: %s", fileEntityId);
-                        return Observable.concat(
-                            depictionEdits(contribution, fileEntityId),
-                            captionEdits(contribution, fileEntityId)
-                        );
-                    } else {
-                        Timber.d("Error acquiring EntityId for image: %s", uploadResult);
-                        return Observable.empty();
-                    }
-                }
-            );
-    }
-
-    private Observable<Boolean> captionEdits(Contribution contribution, Long fileEntityId) {
-        return Observable.fromIterable(contribution.getMedia().getCaptions().entrySet())
-            .concatMap(entry -> addCaption(fileEntityId, entry.getKey(), entry.getValue()));
-    }
-
-    private Observable<Boolean> depictionEdits(Contribution contribution, Long fileEntityId) {
-        final List<String> depictIDs = new ArrayList<>();
-        for (final WikidataItem wikidataItem :
-            contribution.getDepictedItems()) {
-            depictIDs.add(wikidataItem.getId());
-        }
-        return addDepictsProperty(fileEntityId.toString(), depictIDs);
-    }
-}
-

app/src/main/java/fr/free/nrw/commons/wikidata/WikidataEditService.kt

@@ -0,0 +1,252 @@
+package fr.free.nrw.commons.wikidata
+
+import android.annotation.SuppressLint
+import android.content.Context
+import com.google.gson.Gson
+import fr.free.nrw.commons.R
+import fr.free.nrw.commons.contributions.Contribution
+import fr.free.nrw.commons.kvstore.JsonKvStore
+import fr.free.nrw.commons.media.PAGE_ID_PREFIX
+import fr.free.nrw.commons.upload.UploadResult
+import fr.free.nrw.commons.upload.WikidataItem
+import fr.free.nrw.commons.upload.WikidataPlace
+import fr.free.nrw.commons.utils.ConfigUtils.isBetaFlavour
+import fr.free.nrw.commons.utils.ViewUtil.showLongToast
+import fr.free.nrw.commons.wikidata.WikidataProperties.DEPICTS
+import fr.free.nrw.commons.wikidata.WikidataProperties.IMAGE
+import fr.free.nrw.commons.wikidata.WikidataProperties.MEDIA_LEGENDS
+import fr.free.nrw.commons.wikidata.model.DataValue.MonoLingualText
+import fr.free.nrw.commons.wikidata.model.DataValue.ValueString
+import fr.free.nrw.commons.wikidata.model.EditClaim
+import fr.free.nrw.commons.wikidata.model.RemoveClaim
+import fr.free.nrw.commons.wikidata.model.SnakPartial
+import fr.free.nrw.commons.wikidata.model.StatementPartial
+import fr.free.nrw.commons.wikidata.model.WikiBaseMonolingualTextValue
+import fr.free.nrw.commons.wikidata.mwapi.MwPostResponse
+import io.reactivex.Observable
+import io.reactivex.schedulers.Schedulers
+import timber.log.Timber
+import java.util.Arrays
+import java.util.Collections
+import java.util.Locale
+import java.util.Objects
+import java.util.UUID
+import javax.inject.Inject
+import javax.inject.Named
+import javax.inject.Singleton
+
+
+/**
+ * This class is meant to handle the Wikidata edits made through the app It will talk with MediaWiki
+ * Apis to make the necessary calls, log the edits and fire listeners on successful edits
+ */
+@Singleton
+class WikidataEditService @Inject constructor(
+    private val context: Context,
+    private val wikidataEditListener: WikidataEditListener?,
+    @param:Named("default_preferences") private val directKvStore: JsonKvStore,
+    private val wikiBaseClient: WikiBaseClient,
+    private val wikidataClient: WikidataClient, private val gson: Gson
+) {
+    @SuppressLint("CheckResult")
+    private fun addDepictsProperty(
+        fileEntityId: String,
+        depictedItems: List<String>
+    ): Observable<Boolean> {
+        val data = EditClaim.from(
+            if (isBetaFlavour) listOf("Q10") else depictedItems, DEPICTS.propertyName
+        )
+
+        return wikiBaseClient.postEditEntity(PAGE_ID_PREFIX + fileEntityId, gson.toJson(data))
+            .doOnNext { success: Boolean ->
+                if (success) {
+                    Timber.d("DEPICTS property was set successfully for %s", fileEntityId)
+                } else {
+                    Timber.d("Unable to set DEPICTS property for %s", fileEntityId)
+                }
+            }
+            .doOnError { throwable: Throwable ->
+                Timber.e(throwable, "Error occurred while setting DEPICTS property")
+                showLongToast(context, throwable.toString())
+            }
+            .subscribeOn(Schedulers.io())
+    }
+
+    @SuppressLint("CheckResult")
+    fun updateDepictsProperty(
+        fileEntityId: String?,
+        depictedItems: List<String>
+    ): Observable<Boolean> {
+        val entityId: String = PAGE_ID_PREFIX + fileEntityId
+        val claimIds = getDepictionsClaimIds(entityId)
+
+        /* Please consider removeClaim scenario for BetaDebug */
+        val data = RemoveClaim.from(if (isBetaFlavour) listOf("Q10") else claimIds)
+
+        return wikiBaseClient.postDeleteClaims(entityId, gson.toJson(data))
+            .doOnError { throwable: Throwable? ->
+                Timber.e(
+                    throwable,
+                    "Error occurred while removing existing claims for DEPICTS property"
+                )
+                showLongToast(
+                    context,
+                    context.getString(R.string.wikidata_edit_failure)
+                )
+            }.switchMap { success: Boolean ->
+                if (success) {
+                    Timber.d("DEPICTS property was deleted successfully")
+                    return@switchMap addDepictsProperty(fileEntityId!!, depictedItems)
+                } else {
+                    Timber.d("Unable to delete DEPICTS property")
+                    return@switchMap Observable.empty<Boolean>()
+                }
+            }
+    }
+
+    @SuppressLint("CheckResult")
+    private fun getDepictionsClaimIds(entityId: String): List<String> {
+        return wikiBaseClient.getClaimIdsByProperty(entityId, DEPICTS.propertyName)
+            .subscribeOn(Schedulers.io())
+            .blockingFirst()
+    }
+
+    private fun showSuccessToast(wikiItemName: String) {
+        val successStringTemplate = context.getString(R.string.successful_wikidata_edit)
+        val successMessage = String.format(Locale.getDefault(), successStringTemplate, wikiItemName)
+        showLongToast(context, successMessage)
+    }
+
+    @SuppressLint("CheckResult")
+    private fun addCaption(
+        fileEntityId: Long, languageCode: String,
+        captionValue: String
+    ): Observable<Boolean> {
+        return wikiBaseClient.addLabelsToWikidata(fileEntityId, languageCode, captionValue)
+            .doOnNext { mwPostResponse: MwPostResponse? ->
+                onAddCaptionResponse(
+                    fileEntityId,
+                    mwPostResponse
+                )
+            }
+            .doOnError { throwable: Throwable? ->
+                Timber.e(throwable, "Error occurred while setting Captions")
+                showLongToast(
+                    context,
+                    context.getString(R.string.wikidata_edit_failure)
+                )
+            }
+            .map(Objects::nonNull)
+    }
+
+    private fun onAddCaptionResponse(fileEntityId: Long, response: MwPostResponse?) {
+        if (response != null) {
+            Timber.d("Caption successfully set, revision id = %s", response)
+        } else {
+            Timber.d("Error occurred while setting Captions, fileEntityId = %s", fileEntityId)
+        }
+    }
+
+    fun createClaim(
+        wikidataPlace: WikidataPlace?, fileName: String,
+        captions: Map<String, String>
+    ): Long? {
+        if (!(directKvStore.getBoolean("Picture_Has_Correct_Location", true))) {
+            Timber.d(
+                "Image location and nearby place location mismatched, so Wikidata item won't be edited"
+            )
+            return null
+        }
+        return addImageAndMediaLegends(wikidataPlace!!, fileName, captions)
+    }
+
+    fun addImageAndMediaLegends(
+        wikidataItem: WikidataItem, fileName: String,
+        captions: Map<String, String>
+    ): Long {
+        val p18 = SnakPartial(
+            "value",
+            IMAGE.propertyName,
+            ValueString(fileName.replace("File:", ""))
+        )
+
+        val snaks: MutableList<SnakPartial> = ArrayList()
+        for ((key, value) in captions) {
+            snaks.add(
+                SnakPartial(
+                    "value",
+                    MEDIA_LEGENDS.propertyName, MonoLingualText(
+                        WikiBaseMonolingualTextValue(value!!, key!!)
+                    )
+                )
+            )
+        }
+
+        val id = wikidataItem.id + "$" + UUID.randomUUID().toString()
+        val claim = StatementPartial(
+            p18, "statement", "normal", id, Collections.singletonMap<String, List<SnakPartial>>(
+                MEDIA_LEGENDS.propertyName, snaks
+            ), Arrays.asList(MEDIA_LEGENDS.propertyName)
+        )
+
+        return wikidataClient.setClaim(claim, COMMONS_APP_TAG).blockingSingle()
+    }
+
+    fun handleImageClaimResult(wikidataItem: WikidataItem, revisionId: Long?) {
+        if (revisionId != null) {
+            wikidataEditListener?.onSuccessfulWikidataEdit()
+            showSuccessToast(wikidataItem.name)
+        } else {
+            Timber.d("Unable to make wiki data edit for entity %s", wikidataItem)
+            showLongToast(context, context.getString(R.string.wikidata_edit_failure))
+        }
+    }
+
+    fun addDepictionsAndCaptions(
+        uploadResult: UploadResult,
+        contribution: Contribution
+    ): Observable<Boolean> {
+        return wikiBaseClient.getFileEntityId(uploadResult)
+            .doOnError { throwable: Throwable? ->
+                Timber.e(
+                    throwable,
+                    "Error occurred while getting EntityID to set DEPICTS property"
+                )
+                showLongToast(
+                    context,
+                    context.getString(R.string.wikidata_edit_failure)
+                )
+            }
+            .switchMap { fileEntityId: Long? ->
+                if (fileEntityId != null) {
+                    Timber.d("EntityId for image was received successfully: %s", fileEntityId)
+                    return@switchMap Observable.concat<Boolean>(
+                        depictionEdits(contribution, fileEntityId),
+                        captionEdits(contribution, fileEntityId)
+                    )
+                } else {
+                    Timber.d("Error acquiring EntityId for image: %s", uploadResult)
+                    return@switchMap Observable.empty<Boolean>()
+                }
+            }
+    }
+
+    private fun captionEdits(contribution: Contribution, fileEntityId: Long): Observable<Boolean> {
+        return Observable.fromIterable(contribution.media.captions.entries)
+            .concatMap { addCaption(fileEntityId, it.key, it.value) }
+    }
+
+    private fun depictionEdits(
+        contribution: Contribution,
+        fileEntityId: Long
+    ): Observable<Boolean> = addDepictsProperty(fileEntityId.toString(), buildList {
+        for ((_, _, _, _, _, _, id) in contribution.depictedItems) {
+            add(id)
+        }
+    })
+
+    companion object {
+        const val COMMONS_APP_TAG: String = "wikimedia-commons-app"
+    }
+}
+

app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.java

@@ -1,29 +0,0 @@
-package fr.free.nrw.commons.wikidata.json;
-
-import com.google.gson.TypeAdapter;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonToken;
-import com.google.gson.stream.JsonWriter;
-
-import fr.free.nrw.commons.wikidata.model.page.Namespace;
-
-import java.io.IOException;
-
-public class NamespaceTypeAdapter extends TypeAdapter<Namespace> {
-
-    @Override
-    public void write(JsonWriter out, Namespace namespace) throws IOException {
-        out.value(namespace.code());
-    }
-
-    @Override
-    public Namespace read(JsonReader in) throws IOException {
-        if (in.peek() == JsonToken.STRING) {
-            // Prior to 3210ce44, we marshaled Namespace as the name string of the enum, instead of
-            // the code number. This introduces a backwards-compatible check for the string value.
-            // TODO: remove after April 2017, when all older namespaces have been deserialized.
-            return Namespace.valueOf(in.nextString());
-        }
-        return Namespace.of(in.nextInt());
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/json/NamespaceTypeAdapter.kt

@@ -0,0 +1,26 @@
+package fr.free.nrw.commons.wikidata.json
+
+import com.google.gson.TypeAdapter
+import com.google.gson.stream.JsonReader
+import com.google.gson.stream.JsonToken
+import com.google.gson.stream.JsonWriter
+import fr.free.nrw.commons.wikidata.model.page.Namespace
+import java.io.IOException
+
+class NamespaceTypeAdapter : TypeAdapter<Namespace>() {
+    @Throws(IOException::class)
+    override fun write(out: JsonWriter, namespace: Namespace) {
+        out.value(namespace.code().toLong())
+    }
+
+    @Throws(IOException::class)
+    override fun read(reader: JsonReader): Namespace {
+        if (reader.peek() == JsonToken.STRING) {
+            // Prior to 3210ce44, we marshaled Namespace as the name string of the enum, instead of
+            // the code number. This introduces a backwards-compatible check for the string value.
+            // TODO: remove after April 2017, when all older namespaces have been deserialized.
+            return Namespace.valueOf(reader.nextString())
+        }
+        return Namespace.of(reader.nextInt())
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.java

@@ -1,34 +0,0 @@
-package fr.free.nrw.commons.wikidata.json;
-
-import com.google.gson.Gson;
-import com.google.gson.TypeAdapter;
-import com.google.gson.TypeAdapterFactory;
-import com.google.gson.reflect.TypeToken;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonWriter;
-
-import java.io.IOException;
-
-public class PostProcessingTypeAdapter implements TypeAdapterFactory {
-    public interface PostProcessable {
-        void postProcess();
-    }
-
-    public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
-        final TypeAdapter<T> delegate = gson.getDelegateAdapter(this, type);
-
-        return new TypeAdapter<T>() {
-            public void write(JsonWriter out, T value) throws IOException {
-                delegate.write(out, value);
-            }
-
-            public T read(JsonReader in) throws IOException {
-                T obj = delegate.read(in);
-                if (obj instanceof PostProcessable) {
-                    ((PostProcessable)obj).postProcess();
-                }
-                return obj;
-            }
-        };
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/json/PostProcessingTypeAdapter.kt

@@ -0,0 +1,35 @@
+package fr.free.nrw.commons.wikidata.json
+
+import com.google.gson.Gson
+import com.google.gson.TypeAdapter
+import com.google.gson.TypeAdapterFactory
+import com.google.gson.reflect.TypeToken
+import com.google.gson.stream.JsonReader
+import com.google.gson.stream.JsonWriter
+import java.io.IOException
+
+class PostProcessingTypeAdapter : TypeAdapterFactory {
+    interface PostProcessable {
+        fun postProcess()
+    }
+
+    override fun <T> create(gson: Gson, type: TypeToken<T>): TypeAdapter<T> {
+        val delegate = gson.getDelegateAdapter(this, type)
+
+        return object : TypeAdapter<T>() {
+            @Throws(IOException::class)
+            override fun write(out: JsonWriter, value: T) {
+                delegate.write(out, value)
+            }
+
+            @Throws(IOException::class)
+            override fun read(reader: JsonReader): T {
+                val obj = delegate.read(reader)
+                if (obj is PostProcessable) {
+                    (obj as PostProcessable).postProcess()
+                }
+                return obj
+            }
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/json/RequiredFieldsCheckOnReadTypeAdapterFactory.java

@@ -1,94 +0,0 @@
-package fr.free.nrw.commons.wikidata.json;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import androidx.collection.ArraySet;
-
-import com.google.gson.Gson;
-import com.google.gson.JsonParseException;
-import com.google.gson.TypeAdapter;
-import com.google.gson.TypeAdapterFactory;
-import com.google.gson.reflect.TypeToken;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonWriter;
-
-import fr.free.nrw.commons.wikidata.json.annotations.Required;
-
-import java.io.IOException;
-import java.lang.reflect.Field;
-import java.util.Collections;
-import java.util.Set;
-
-/**
- * TypeAdapterFactory that provides TypeAdapters that return null values for objects that are
- * missing fields annotated with @Required.
- *
- * BEWARE: This means that a List or other Collection of objects that have @Required fields can
- * contain null elements after deserialization!
- *
- * TODO: Handle null values in lists during deserialization, perhaps with a new @RequiredElements
- * annotation and another corresponding TypeAdapter(Factory).
- */
-public class RequiredFieldsCheckOnReadTypeAdapterFactory implements TypeAdapterFactory {
-    @Nullable @Override public final <T> TypeAdapter<T> create(@NonNull Gson gson, @NonNull TypeToken<T> typeToken) {
-        Class<?> rawType = typeToken.getRawType();
-        Set<Field> requiredFields = collectRequiredFields(rawType);
-
-        if (requiredFields.isEmpty()) {
-            return null;
-        }
-
-        setFieldsAccessible(requiredFields, true);
-        return new Adapter<>(gson.getDelegateAdapter(this, typeToken), requiredFields);
-    }
-
-    @NonNull private Set<Field> collectRequiredFields(@NonNull Class<?> clazz) {
-        Field[] fields = clazz.getDeclaredFields();
-        Set<Field> required = new ArraySet<>();
-        for (Field field : fields) {
-            if (field.isAnnotationPresent(Required.class)) {
-                required.add(field);
-            }
-        }
-        return Collections.unmodifiableSet(required);
-    }
-
-    private void setFieldsAccessible(Iterable<Field> fields, boolean accessible) {
-        for (Field field : fields) {
-            field.setAccessible(accessible);
-        }
-    }
-
-    private static final class Adapter<T> extends TypeAdapter<T> {
-        @NonNull private final TypeAdapter<T> delegate;
-        @NonNull private final Set<Field> requiredFields;
-
-        private Adapter(@NonNull TypeAdapter<T> delegate, @NonNull final Set<Field> requiredFields) {
-            this.delegate = delegate;
-            this.requiredFields = requiredFields;
-        }
-
-        @Override public void write(JsonWriter out, T value) throws IOException {
-            delegate.write(out, value);
-        }
-
-        @Override @Nullable public T read(JsonReader in) throws IOException {
-            T deserialized = delegate.read(in);
-            return allRequiredFieldsPresent(deserialized, requiredFields) ? deserialized : null;
-        }
-
-        private boolean allRequiredFieldsPresent(@NonNull T deserialized,
-                                                 @NonNull Set<Field> required) {
-            for (Field field : required) {
-                try {
-                    if (field.get(deserialized) == null) {
-                        return false;
-                    }
-                } catch (IllegalArgumentException | IllegalAccessException e) {
-                    throw new JsonParseException(e);
-                }
-            }
-            return true;
-        }
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/json/RequiredFieldsCheckOnReadTypeAdapterFactory.kt

@@ -0,0 +1,75 @@
+package fr.free.nrw.commons.wikidata.json
+
+import com.google.gson.Gson
+import com.google.gson.JsonParseException
+import com.google.gson.TypeAdapter
+import com.google.gson.TypeAdapterFactory
+import com.google.gson.reflect.TypeToken
+import com.google.gson.stream.JsonReader
+import com.google.gson.stream.JsonWriter
+import fr.free.nrw.commons.wikidata.json.annotations.Required
+import java.io.IOException
+import java.lang.reflect.Field
+
+/**
+ * TypeAdapterFactory that provides TypeAdapters that return null values for objects that are
+ * missing fields annotated with @Required.
+ *
+ * BEWARE: This means that a List or other Collection of objects that have @Required fields can
+ * contain null elements after deserialization!
+ *
+ * TODO: Handle null values in lists during deserialization, perhaps with a new @RequiredElements
+ * annotation and another corresponding TypeAdapter(Factory).
+ */
+class RequiredFieldsCheckOnReadTypeAdapterFactory : TypeAdapterFactory {
+    override fun <T> create(gson: Gson, typeToken: TypeToken<T>): TypeAdapter<T>? {
+        val rawType: Class<*> = typeToken.rawType
+        val requiredFields = collectRequiredFields(rawType)
+
+        if (requiredFields.isEmpty()) {
+            return null
+        }
+
+        for (field in requiredFields) {
+            field.isAccessible = true
+        }
+
+        return Adapter(gson.getDelegateAdapter(this, typeToken), requiredFields)
+    }
+
+    private fun collectRequiredFields(clazz: Class<*>): Set<Field> = buildSet {
+        for (field in clazz.declaredFields) {
+            if (field.isAnnotationPresent(Required::class.java)) add(field)
+        }
+    }
+
+    private class Adapter<T>(
+        private val delegate: TypeAdapter<T>,
+        private val requiredFields: Set<Field>
+    ) : TypeAdapter<T>() {
+
+        @Throws(IOException::class)
+        override fun write(out: JsonWriter, value: T?) =
+            delegate.write(out, value)
+
+        @Throws(IOException::class)
+        override fun read(reader: JsonReader): T? =
+            if (allRequiredFieldsPresent(delegate.read(reader), requiredFields))
+                delegate.read(reader)
+            else
+                null
+
+        fun allRequiredFieldsPresent(deserialized: T, required: Set<Field>): Boolean {
+            for (field in required) {
+                try {
+                    if (field[deserialized] == null) return false
+                } catch (e: IllegalArgumentException) {
+                    throw JsonParseException(e)
+                } catch (e: IllegalAccessException) {
+                    throw JsonParseException(e)
+                }
+            }
+            return true
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.java

@@ -1,280 +0,0 @@
-package fr.free.nrw.commons.wikidata.json;
-
-/*
- * Copyright (C) 2011 Google Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-import android.util.Log;
-import java.io.IOException;
-import java.util.LinkedHashMap;
-import java.util.Map;
-
-import com.google.gson.Gson;
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.google.gson.JsonParseException;
-import com.google.gson.JsonPrimitive;
-import com.google.gson.TypeAdapter;
-import com.google.gson.TypeAdapterFactory;
-import com.google.gson.internal.Streams;
-import com.google.gson.reflect.TypeToken;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonWriter;
-
-/**
- * Adapts values whose runtime type may differ from their declaration type. This
- * is necessary when a field's type is not the same type that GSON should create
- * when deserializing that field. For example, consider these types:
- * <pre>   {@code
- *   abstract class Shape {
- *     int x;
- *     int y;
- *   }
- *   class Circle extends Shape {
- *     int radius;
- *   }
- *   class Rectangle extends Shape {
- *     int width;
- *     int height;
- *   }
- *   class Diamond extends Shape {
- *     int width;
- *     int height;
- *   }
- *   class Drawing {
- *     Shape bottomShape;
- *     Shape topShape;
- *   }
- * }</pre>
- * <p>Without additional type information, the serialized JSON is ambiguous. Is
- * the bottom shape in this drawing a rectangle or a diamond? <pre>   {@code
- *   {
- *     "bottomShape": {
- *       "width": 10,
- *       "height": 5,
- *       "x": 0,
- *       "y": 0
- *     },
- *     "topShape": {
- *       "radius": 2,
- *       "x": 4,
- *       "y": 1
- *     }
- *   }}</pre>
- * This class addresses this problem by adding type information to the
- * serialized JSON and honoring that type information when the JSON is
- * deserialized: <pre>   {@code
- *   {
- *     "bottomShape": {
- *       "type": "Diamond",
- *       "width": 10,
- *       "height": 5,
- *       "x": 0,
- *       "y": 0
- *     },
- *     "topShape": {
- *       "type": "Circle",
- *       "radius": 2,
- *       "x": 4,
- *       "y": 1
- *     }
- *   }}</pre>
- * Both the type field name ({@code "type"}) and the type labels ({@code
- * "Rectangle"}) are configurable.
- *
- * <h3>Registering Types</h3>
- * Create a {@code RuntimeTypeAdapterFactory} by passing the base type and type field
- * name to the {@link #of} factory method. If you don't supply an explicit type
- * field name, {@code "type"} will be used. <pre>   {@code
- *   RuntimeTypeAdapterFactory<Shape> shapeAdapterFactory
- *       = RuntimeTypeAdapterFactory.of(Shape.class, "type");
- * }</pre>
- * Next register all of your subtypes. Every subtype must be explicitly
- * registered. This protects your application from injection attacks. If you
- * don't supply an explicit type label, the type's simple name will be used.
- * <pre>   {@code
- *   shapeAdapterFactory.registerSubtype(Rectangle.class, "Rectangle");
- *   shapeAdapterFactory.registerSubtype(Circle.class, "Circle");
- *   shapeAdapterFactory.registerSubtype(Diamond.class, "Diamond");
- * }</pre>
- * Finally, register the type adapter factory in your application's GSON builder:
- * <pre>   {@code
- *   Gson gson = new GsonBuilder()
- *       .registerTypeAdapterFactory(shapeAdapterFactory)
- *       .create();
- * }</pre>
- * Like {@code GsonBuilder}, this API supports chaining: <pre>   {@code
- *   RuntimeTypeAdapterFactory<Shape> shapeAdapterFactory = RuntimeTypeAdapterFactory.of(Shape.class)
- *       .registerSubtype(Rectangle.class)
- *       .registerSubtype(Circle.class)
- *       .registerSubtype(Diamond.class);
- * }</pre>
- *
- * <h3>Serialization and deserialization</h3>
- * In order to serialize and deserialize a polymorphic object,
- * you must specify the base type explicitly.
- * <pre>   {@code
- *   Diamond diamond = new Diamond();
- *   String json = gson.toJson(diamond, Shape.class);
- * }</pre>
- * And then:
- * <pre>   {@code
- *   Shape shape = gson.fromJson(json, Shape.class);
- * }</pre>
- */
-public final class RuntimeTypeAdapterFactory<T> implements TypeAdapterFactory {
-  private final Class<?> baseType;
-  private final String typeFieldName;
-  private final Map<String, Class<?>> labelToSubtype = new LinkedHashMap<String, Class<?>>();
-  private final Map<Class<?>, String> subtypeToLabel = new LinkedHashMap<Class<?>, String>();
-  private final boolean maintainType;
-
-  private RuntimeTypeAdapterFactory(Class<?> baseType, String typeFieldName, boolean maintainType) {
-    if (typeFieldName == null || baseType == null) {
-      throw new NullPointerException();
-    }
-    this.baseType = baseType;
-    this.typeFieldName = typeFieldName;
-    this.maintainType = maintainType;
-  }
-
-  /**
-   * Creates a new runtime type adapter using for {@code baseType} using {@code
-   * typeFieldName} as the type field name. Type field names are case sensitive.
-   * {@code maintainType} flag decide if the type will be stored in pojo or not.
-   */
-  public static <T> RuntimeTypeAdapterFactory<T> of(Class<T> baseType, String typeFieldName, boolean maintainType) {
-    return new RuntimeTypeAdapterFactory<T>(baseType, typeFieldName, maintainType);
-  }
-
-  /**
-   * Creates a new runtime type adapter using for {@code baseType} using {@code
-   * typeFieldName} as the type field name. Type field names are case sensitive.
-   */
-  public static <T> RuntimeTypeAdapterFactory<T> of(Class<T> baseType, String typeFieldName) {
-    return new RuntimeTypeAdapterFactory<T>(baseType, typeFieldName, false);
-  }
-
-  /**
-   * Creates a new runtime type adapter for {@code baseType} using {@code "type"} as
-   * the type field name.
-   */
-  public static <T> RuntimeTypeAdapterFactory<T> of(Class<T> baseType) {
-    return new RuntimeTypeAdapterFactory<T>(baseType, "type", false);
-  }
-
-  /**
-   * Registers {@code type} identified by {@code label}. Labels are case
-   * sensitive.
-   *
-   * @throws IllegalArgumentException if either {@code type} or {@code label}
-   *     have already been registered on this type adapter.
-   */
-  public RuntimeTypeAdapterFactory<T> registerSubtype(Class<? extends T> type, String label) {
-    if (type == null || label == null) {
-      throw new NullPointerException();
-    }
-    if (subtypeToLabel.containsKey(type) || labelToSubtype.containsKey(label)) {
-      throw new IllegalArgumentException("types and labels must be unique");
-    }
-    labelToSubtype.put(label, type);
-    subtypeToLabel.put(type, label);
-    return this;
-  }
-
-  /**
-   * Registers {@code type} identified by its {@link Class#getSimpleName simple
-   * name}. Labels are case sensitive.
-   *
-   * @throws IllegalArgumentException if either {@code type} or its simple name
-   *     have already been registered on this type adapter.
-   */
-  public RuntimeTypeAdapterFactory<T> registerSubtype(Class<? extends T> type) {
-    return registerSubtype(type, type.getSimpleName());
-  }
-
-  public <R> TypeAdapter<R> create(Gson gson, TypeToken<R> type) {
-    if (type.getRawType() != baseType) {
-      return null;
-    }
-
-    final Map<String, TypeAdapter<?>> labelToDelegate
-        = new LinkedHashMap<String, TypeAdapter<?>>();
-    final Map<Class<?>, TypeAdapter<?>> subtypeToDelegate
-        = new LinkedHashMap<Class<?>, TypeAdapter<?>>();
-    for (Map.Entry<String, Class<?>> entry : labelToSubtype.entrySet()) {
-      TypeAdapter<?> delegate = gson.getDelegateAdapter(this, TypeToken.get(entry.getValue()));
-      labelToDelegate.put(entry.getKey(), delegate);
-      subtypeToDelegate.put(entry.getValue(), delegate);
-    }
-
-    return new TypeAdapter<R>() {
-      @Override public R read(JsonReader in) throws IOException {
-        JsonElement jsonElement = Streams.parse(in);
-        JsonElement labelJsonElement;
-        if (maintainType) {
-          labelJsonElement = jsonElement.getAsJsonObject().get(typeFieldName);
-        } else {
-          labelJsonElement = jsonElement.getAsJsonObject().remove(typeFieldName);
-        }
-
-        if (labelJsonElement == null) {
-          throw new JsonParseException("cannot deserialize " + baseType
-              + " because it does not define a field named " + typeFieldName);
-        }
-        String label = labelJsonElement.getAsString();
-        @SuppressWarnings("unchecked") // registration requires that subtype extends T
-            TypeAdapter<R> delegate = (TypeAdapter<R>) labelToDelegate.get(label);
-        if (delegate == null) {
-
-          Log.e("RuntimeTypeAdapter", "cannot deserialize " + baseType + " subtype named "
-              + label + "; did you forget to register a subtype? " +jsonElement);
-          return null;
-        }
-        return delegate.fromJsonTree(jsonElement);
-      }
-
-      @Override public void write(JsonWriter out, R value) throws IOException {
-        Class<?> srcType = value.getClass();
-        String label = subtypeToLabel.get(srcType);
-        @SuppressWarnings("unchecked") // registration requires that subtype extends T
-            TypeAdapter<R> delegate = (TypeAdapter<R>) subtypeToDelegate.get(srcType);
-        if (delegate == null) {
-          throw new JsonParseException("cannot serialize " + srcType.getName()
-              + "; did you forget to register a subtype?");
-        }
-        JsonObject jsonObject = delegate.toJsonTree(value).getAsJsonObject();
-
-        if (maintainType) {
-          Streams.write(jsonObject, out);
-          return;
-        }
-
-        JsonObject clone = new JsonObject();
-
-        if (jsonObject.has(typeFieldName)) {
-          throw new JsonParseException("cannot serialize " + srcType.getName()
-              + " because it already defines a field named " + typeFieldName);
-        }
-        clone.add(typeFieldName, new JsonPrimitive(label));
-
-        for (Map.Entry<String, JsonElement> e : jsonObject.entrySet()) {
-          clone.add(e.getKey(), e.getValue());
-        }
-        Streams.write(clone, out);
-      }
-    }.nullSafe();
-  }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/json/RuntimeTypeAdapterFactory.kt

@@ -0,0 +1,273 @@
+package fr.free.nrw.commons.wikidata.json
+
+import com.google.gson.Gson
+import com.google.gson.JsonObject
+import com.google.gson.JsonParseException
+import com.google.gson.JsonPrimitive
+import com.google.gson.TypeAdapter
+import com.google.gson.TypeAdapterFactory
+import com.google.gson.internal.Streams
+import com.google.gson.reflect.TypeToken
+import com.google.gson.stream.JsonReader
+import com.google.gson.stream.JsonWriter
+import timber.log.Timber
+import java.io.IOException
+
+/*
+* Copyright (C) 2011 Google Inc.
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*      http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+
+/**
+ * Adapts values whose runtime type may differ from their declaration type. This
+ * is necessary when a field's type is not the same type that GSON should create
+ * when deserializing that field. For example, consider these types:
+ * <pre>   `abstract class Shape {
+ * int x;
+ * int y;
+ * }
+ * class Circle extends Shape {
+ * int radius;
+ * }
+ * class Rectangle extends Shape {
+ * int width;
+ * int height;
+ * }
+ * class Diamond extends Shape {
+ * int width;
+ * int height;
+ * }
+ * class Drawing {
+ * Shape bottomShape;
+ * Shape topShape;
+ * }
+`</pre> *
+ *
+ * Without additional type information, the serialized JSON is ambiguous. Is
+ * the bottom shape in this drawing a rectangle or a diamond? <pre>   `{
+ * "bottomShape": {
+ * "width": 10,
+ * "height": 5,
+ * "x": 0,
+ * "y": 0
+ * },
+ * "topShape": {
+ * "radius": 2,
+ * "x": 4,
+ * "y": 1
+ * }
+ * }`</pre>
+ * This class addresses this problem by adding type information to the
+ * serialized JSON and honoring that type information when the JSON is
+ * deserialized: <pre>   `{
+ * "bottomShape": {
+ * "type": "Diamond",
+ * "width": 10,
+ * "height": 5,
+ * "x": 0,
+ * "y": 0
+ * },
+ * "topShape": {
+ * "type": "Circle",
+ * "radius": 2,
+ * "x": 4,
+ * "y": 1
+ * }
+ * }`</pre>
+ * Both the type field name (`"type"`) and the type labels (`"Rectangle"`) are configurable.
+ *
+ * <h3>Registering Types</h3>
+ * Create a `RuntimeTypeAdapterFactory` by passing the base type and type field
+ * name to the [.of] factory method. If you don't supply an explicit type
+ * field name, `"type"` will be used. <pre>   `RuntimeTypeAdapterFactory<Shape> shapeAdapterFactory
+ * = RuntimeTypeAdapterFactory.of(Shape.class, "type");
+`</pre> *
+ * Next register all of your subtypes. Every subtype must be explicitly
+ * registered. This protects your application from injection attacks. If you
+ * don't supply an explicit type label, the type's simple name will be used.
+ * <pre>   `shapeAdapterFactory.registerSubtype(Rectangle.class, "Rectangle");
+ * shapeAdapterFactory.registerSubtype(Circle.class, "Circle");
+ * shapeAdapterFactory.registerSubtype(Diamond.class, "Diamond");
+`</pre> *
+ * Finally, register the type adapter factory in your application's GSON builder:
+ * <pre>   `Gson gson = new GsonBuilder()
+ * .registerTypeAdapterFactory(shapeAdapterFactory)
+ * .create();
+`</pre> *
+ * Like `GsonBuilder`, this API supports chaining: <pre>   `RuntimeTypeAdapterFactory<Shape> shapeAdapterFactory = RuntimeTypeAdapterFactory.of(Shape.class)
+ * .registerSubtype(Rectangle.class)
+ * .registerSubtype(Circle.class)
+ * .registerSubtype(Diamond.class);
+`</pre> *
+ *
+ * <h3>Serialization and deserialization</h3>
+ * In order to serialize and deserialize a polymorphic object,
+ * you must specify the base type explicitly.
+ * <pre>   `Diamond diamond = new Diamond();
+ * String json = gson.toJson(diamond, Shape.class);
+`</pre> *
+ * And then:
+ * <pre>   `Shape shape = gson.fromJson(json, Shape.class);
+`</pre> *
+ */
+class RuntimeTypeAdapterFactory<T>(
+    baseType: Class<*>?,
+    typeFieldName: String?,
+    maintainType: Boolean
+) : TypeAdapterFactory {
+
+    private val baseType: Class<*>
+    private val typeFieldName: String
+    private val labelToSubtype = mutableMapOf<String, Class<*>>()
+    private val subtypeToLabel = mutableMapOf<Class<*>, String>()
+    private val maintainType: Boolean
+
+    init {
+        if (typeFieldName == null || baseType == null) {
+            throw NullPointerException()
+        }
+        this.baseType = baseType
+        this.typeFieldName = typeFieldName
+        this.maintainType = maintainType
+    }
+
+    /**
+     * Registers `type` identified by `label`. Labels are case
+     * sensitive.
+     *
+     * @throws IllegalArgumentException if either `type` or `label`
+     * have already been registered on this type adapter.
+     */
+    fun registerSubtype(type: Class<out T>?, label: String?): RuntimeTypeAdapterFactory<T> {
+        if (type == null || label == null) {
+            throw NullPointerException()
+        }
+        require(!(subtypeToLabel.containsKey(type) || labelToSubtype.containsKey(label))) {
+            "types and labels must be unique"
+        }
+
+        labelToSubtype[label] = type
+        subtypeToLabel[type] = label
+        return this
+    }
+
+    /**
+     * Registers `type` identified by its [simple][Class.getSimpleName]. Labels are case sensitive.
+     *
+     * @throws IllegalArgumentException if either `type` or its simple name
+     * have already been registered on this type adapter.
+     */
+    fun registerSubtype(type: Class<out T>): RuntimeTypeAdapterFactory<T> {
+        return registerSubtype(type, type.simpleName)
+    }
+
+    override fun <R : Any> create(gson: Gson, type: TypeToken<R>): TypeAdapter<R>? {
+        if (type.rawType != baseType) {
+            return null
+        }
+
+        val labelToDelegate = mutableMapOf<String, TypeAdapter<*>>()
+        val subtypeToDelegate = mutableMapOf<Class<*>, TypeAdapter<*>>()
+        for ((key, value) in labelToSubtype) {
+            val delegate = gson.getDelegateAdapter(
+                this, TypeToken.get(
+                    value
+                )
+            )
+            labelToDelegate[key] = delegate
+            subtypeToDelegate[value] = delegate
+        }
+
+        return object : TypeAdapter<R>() {
+            @Throws(IOException::class)
+            override fun read(reader: JsonReader): R? {
+                val jsonElement = Streams.parse(reader)
+                val labelJsonElement = if (maintainType) {
+                    jsonElement.asJsonObject[typeFieldName]
+                } else {
+                    jsonElement.asJsonObject.remove(typeFieldName)
+                }
+
+                if (labelJsonElement == null) {
+                    throw JsonParseException(
+                        "cannot deserialize $baseType because it does not define a field named $typeFieldName"
+                    )
+                }
+                val label = labelJsonElement.asString
+                val delegate = labelToDelegate[label] as TypeAdapter<R>?
+                if (delegate == null) {
+                    Timber.tag("RuntimeTypeAdapter").e(
+                        "cannot deserialize $baseType subtype named $label; did you forget to register a subtype? $jsonElement"
+                    )
+                    return null
+                }
+                return delegate.fromJsonTree(jsonElement)
+            }
+
+            @Throws(IOException::class)
+            override fun write(out: JsonWriter, value: R) {
+                val srcType: Class<*> = value::class.java.javaClass
+                val delegate =
+                    subtypeToDelegate[srcType] as TypeAdapter<R?>? ?: throw JsonParseException(
+                        "cannot serialize ${srcType.name}; did you forget to register a subtype?"
+                    )
+
+                val jsonObject = delegate.toJsonTree(value).asJsonObject
+                if (maintainType) {
+                    Streams.write(jsonObject, out)
+                    return
+                }
+
+                if (jsonObject.has(typeFieldName)) {
+                    throw JsonParseException(
+                        "cannot serialize ${srcType.name} because it already defines a field named $typeFieldName"
+                    )
+                }
+                val clone = JsonObject()
+                val label = subtypeToLabel[srcType]
+                clone.add(typeFieldName, JsonPrimitive(label))
+                for ((key, value1) in jsonObject.entrySet()) {
+                    clone.add(key, value1)
+                }
+                Streams.write(clone, out)
+            }
+        }.nullSafe()
+    }
+
+    companion object {
+        /**
+         * Creates a new runtime type adapter using for `baseType` using `typeFieldName` as the type field name. Type field names are case sensitive.
+         * `maintainType` flag decide if the type will be stored in pojo or not.
+         */
+        fun <T> of(
+            baseType: Class<T>,
+            typeFieldName: String,
+            maintainType: Boolean
+        ): RuntimeTypeAdapterFactory<T> =
+            RuntimeTypeAdapterFactory(baseType, typeFieldName, maintainType)
+
+        /**
+         * Creates a new runtime type adapter using for `baseType` using `typeFieldName` as the type field name. Type field names are case sensitive.
+         */
+        fun <T> of(baseType: Class<T>, typeFieldName: String): RuntimeTypeAdapterFactory<T> =
+            RuntimeTypeAdapterFactory(baseType, typeFieldName, false)
+
+        /**
+         * Creates a new runtime type adapter for `baseType` using `"type"` as
+         * the type field name.
+         */
+        fun <T> of(baseType: Class<T>): RuntimeTypeAdapterFactory<T> =
+            RuntimeTypeAdapterFactory(baseType, "type", false)
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.java

@@ -1,22 +0,0 @@
-package fr.free.nrw.commons.wikidata.json;
-
-import android.net.Uri;
-
-import com.google.gson.TypeAdapter;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonWriter;
-
-import java.io.IOException;
-
-public class UriTypeAdapter extends TypeAdapter<Uri> {
-    @Override
-    public void write(JsonWriter out, Uri value) throws IOException {
-        out.value(value.toString());
-    }
-
-    @Override
-    public Uri read(JsonReader in) throws IOException {
-        String url = in.nextString();
-        return Uri.parse(url);
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/json/UriTypeAdapter.kt

@@ -0,0 +1,19 @@
+package fr.free.nrw.commons.wikidata.json
+
+import android.net.Uri
+import com.google.gson.TypeAdapter
+import com.google.gson.stream.JsonReader
+import com.google.gson.stream.JsonWriter
+import java.io.IOException
+
+class UriTypeAdapter : TypeAdapter<Uri>() {
+    @Throws(IOException::class)
+    override fun write(out: JsonWriter, value: Uri) {
+        out.value(value.toString())
+    }
+
+    @Throws(IOException::class)
+    override fun read(reader: JsonReader): Uri {
+        return Uri.parse(reader.nextString())
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/json/WikiSiteTypeAdapter.java

@@ -1,63 +0,0 @@
-package fr.free.nrw.commons.wikidata.json;
-
-import android.net.Uri;
-
-import com.google.gson.JsonParseException;
-import com.google.gson.TypeAdapter;
-import com.google.gson.stream.JsonReader;
-import com.google.gson.stream.JsonToken;
-import com.google.gson.stream.JsonWriter;
-
-import fr.free.nrw.commons.wikidata.model.WikiSite;
-
-import java.io.IOException;
-
-public class WikiSiteTypeAdapter extends TypeAdapter<WikiSite> {
-    private static final String DOMAIN = "domain";
-    private static final String LANGUAGE_CODE = "languageCode";
-
-    @Override public void write(JsonWriter out, WikiSite value) throws IOException {
-        out.beginObject();
-        out.name(DOMAIN);
-        out.value(value.url());
-
-        out.name(LANGUAGE_CODE);
-        out.value(value.languageCode());
-        out.endObject();
-    }
-
-    @Override public WikiSite read(JsonReader in) throws IOException {
-        // todo: legacy; remove in June 2018
-        if (in.peek() == JsonToken.STRING) {
-            return new WikiSite(Uri.parse(in.nextString()));
-        }
-
-        String domain = null;
-        String languageCode = null;
-        in.beginObject();
-        while (in.hasNext()) {
-            String field = in.nextName();
-            String val = in.nextString();
-            switch (field) {
-                case DOMAIN:
-                    domain = val;
-                    break;
-                case LANGUAGE_CODE:
-                    languageCode = val;
-                    break;
-                default: break;
-            }
-        }
-        in.endObject();
-
-        if (domain == null) {
-            throw new JsonParseException("Missing domain");
-        }
-
-        // todo: legacy; remove in June 2018
-        if (languageCode == null) {
-            return new WikiSite(domain);
-        }
-        return new WikiSite(domain, languageCode);
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/json/WikiSiteTypeAdapter.kt

@@ -0,0 +1,61 @@
+package fr.free.nrw.commons.wikidata.json
+
+import android.net.Uri
+import com.google.gson.JsonParseException
+import com.google.gson.TypeAdapter
+import com.google.gson.stream.JsonReader
+import com.google.gson.stream.JsonToken
+import com.google.gson.stream.JsonWriter
+import fr.free.nrw.commons.wikidata.model.WikiSite
+import java.io.IOException
+
+class WikiSiteTypeAdapter : TypeAdapter<WikiSite>() {
+    @Throws(IOException::class)
+    override fun write(out: JsonWriter, value: WikiSite) {
+        out.beginObject()
+        out.name(DOMAIN)
+        out.value(value.url())
+
+        out.name(LANGUAGE_CODE)
+        out.value(value.languageCode())
+        out.endObject()
+    }
+
+    @Throws(IOException::class)
+    override fun read(reader: JsonReader): WikiSite {
+        // todo: legacy; remove reader June 2018
+        if (reader.peek() == JsonToken.STRING) {
+            return WikiSite(Uri.parse(reader.nextString()))
+        }
+
+        var domain: String? = null
+        var languageCode: String? = null
+        reader.beginObject()
+        while (reader.hasNext()) {
+            val field = reader.nextName()
+            val value = reader.nextString()
+            when (field) {
+                DOMAIN -> domain = value
+                LANGUAGE_CODE -> languageCode = value
+                else -> {}
+            }
+        }
+        reader.endObject()
+
+        if (domain == null) {
+            throw JsonParseException("Missing domain")
+        }
+
+        // todo: legacy; remove reader June 2018
+        return if (languageCode == null) {
+            WikiSite(domain)
+        } else {
+            WikiSite(domain, languageCode)
+        }
+    }
+
+    companion object {
+        private const val DOMAIN = "domain"
+        private const val LANGUAGE_CODE = "languageCode"
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/json/annotations/Required.java

@@ -1,21 +0,0 @@
-package fr.free.nrw.commons.wikidata.json.annotations;
-
-
-import java.lang.annotation.Documented;
-import java.lang.annotation.Retention;
-import java.lang.annotation.RetentionPolicy;
-import java.lang.annotation.Target;
-
-import static java.lang.annotation.ElementType.FIELD;
-
-/**
- * Annotate fields in Retrofit POJO classes with this to enforce their presence in order to return
- * an instantiated object.
- *
- * E.g.: @NonNull @Required private String title;
- */
-@Documented
-@Retention(RetentionPolicy.RUNTIME)
-@Target(FIELD)
-public @interface Required {
-}

app/src/main/java/fr/free/nrw/commons/wikidata/json/annotations/Required.kt

@@ -0,0 +1,12 @@
+package fr.free.nrw.commons.wikidata.json.annotations
+
+
+/**
+ * Annotate fields in Retrofit POJO classes with this to enforce their presence in order to return
+ * an instantiated object.
+ *
+ * E.g.: @NonNull @Required private String title;
+ */
+@Retention(AnnotationRetention.RUNTIME)
+@Target(AnnotationTarget.FIELD)
+annotation class Required 

app/src/main/java/fr/free/nrw/commons/wikidata/model/DepictSearchResponse.java

@@ -1,24 +0,0 @@
-package fr.free.nrw.commons.wikidata.model;
-
-import java.util.List;
-
-/**
- * Model class for API response obtained from search for depictions
- */
-public class DepictSearchResponse {
-    private final List<DepictSearchItem> search;
-
-    /**
-     * Constructor to initialise value of the search object
-     */
-    public DepictSearchResponse(List<DepictSearchItem> search) {
-        this.search = search;
-    }
-
-    /**
-     * @return List<DepictSearchItem> for the DepictSearchResponse
-     */
-    public List<DepictSearchItem> getSearch() {
-        return search;
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/DepictSearchResponse.kt

@@ -0,0 +1,12 @@
+package fr.free.nrw.commons.wikidata.model
+
+/**
+ * Model class for API response obtained from search for depictions
+ */
+class DepictSearchResponse(
+    /**
+     * @return List<DepictSearchItem> for the DepictSearchResponse
+    </DepictSearchItem>
+     */
+    val search: List<DepictSearchItem>
+)

app/src/main/java/fr/free/nrw/commons/wikidata/model/Entities.java

@@ -1,106 +0,0 @@
-package fr.free.nrw.commons.wikidata.model;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-import com.google.gson.annotations.SerializedName;
-import java.util.Collections;
-import java.util.List;
-import java.util.Map;
-import org.apache.commons.lang3.StringUtils;
-import org.jetbrains.annotations.NotNull;
-import fr.free.nrw.commons.wikidata.mwapi.MwResponse;
-
-
-public class Entities extends MwResponse {
-    @Nullable private Map<String, Entity> entities;
-    private int success;
-
-    @NotNull
-    public Map<String, Entity> entities() {
-        return entities != null ? entities : Collections.emptyMap();
-    }
-
-    public int getSuccess() {
-        return success;
-    }
-
-    @Nullable public Entity getFirst() {
-        if (entities == null) {
-            return null;
-        }
-        return entities.values().iterator().next();
-    }
-
-    @Override
-    public void postProcess() {
-        if (getFirst() != null && getFirst().isMissing()) {
-            throw new RuntimeException("The requested entity was not found.");
-        }
-    }
-
-    public static class Entity {
-        @Nullable private String type;
-        @Nullable private String id;
-        @Nullable private Map<String, Label> labels;
-        @Nullable private Map<String, Label> descriptions;
-        @Nullable private Map<String, SiteLink> sitelinks;
-        @Nullable @SerializedName(value = "statements", alternate = "claims") private Map<String, List<StatementPartial>> statements;
-        @Nullable private String missing;
-
-        @NonNull public String id() {
-            return StringUtils.defaultString(id);
-        }
-
-        @NonNull public Map<String, Label> labels() {
-            return labels != null ? labels : Collections.emptyMap();
-        }
-
-        @NonNull public Map<String, Label> descriptions() {
-            return descriptions != null ? descriptions : Collections.emptyMap();
-        }
-
-        @NonNull public Map<String, SiteLink> sitelinks() {
-            return sitelinks != null ? sitelinks : Collections.emptyMap();
-        }
-
-        @Nullable
-        public Map<String, List<StatementPartial>> getStatements() {
-            return statements;
-        }
-
-        boolean isMissing() {
-            return "-1".equals(id) && missing != null;
-        }
-    }
-
-    public static class Label {
-        @Nullable private String language;
-        @Nullable private String value;
-
-        public Label(@Nullable final String language, @Nullable final String value) {
-            this.language = language;
-            this.value = value;
-        }
-
-        @NonNull public String language() {
-            return StringUtils.defaultString(language);
-        }
-
-        @NonNull public String value() {
-            return StringUtils.defaultString(value);
-        }
-    }
-
-    public static class SiteLink {
-        @Nullable private String site;
-        @Nullable private String title;
-
-        @NonNull public String getSite() {
-            return StringUtils.defaultString(site);
-        }
-
-        @NonNull public String getTitle() {
-            return StringUtils.defaultString(title);
-        }
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/Entities.kt

@@ -0,0 +1,64 @@
+package fr.free.nrw.commons.wikidata.model
+
+import com.google.gson.annotations.SerializedName
+import fr.free.nrw.commons.wikidata.mwapi.MwResponse
+import org.apache.commons.lang3.StringUtils
+
+class Entities : MwResponse() {
+    private val entities: Map<String, Entity>? = null
+    val success: Int = 0
+
+    fun entities(): Map<String, Entity> = entities ?: emptyMap()
+
+    private val first : Entity?
+        get() = entities?.values?.iterator()?.next()
+
+    override fun postProcess() {
+        first?.let {
+            if (it.isMissing()) throw RuntimeException("The requested entity was not found.")
+        }
+    }
+
+    class Entity {
+        private val type: String? = null
+        private val id: String? = null
+        private val labels: Map<String, Label>? = null
+        private val descriptions: Map<String, Label>? = null
+        private val sitelinks: Map<String, SiteLink>? = null
+
+        @SerializedName(value = "statements", alternate = ["claims"])
+        val statements: Map<String, List<StatementPartial>>? = null
+        private val missing: String? = null
+
+        fun id(): String =
+            StringUtils.defaultString(id)
+
+        fun labels(): Map<String, Label> =
+            labels ?: emptyMap()
+
+        fun descriptions(): Map<String, Label> =
+            descriptions ?: emptyMap()
+
+        fun sitelinks(): Map<String, SiteLink> =
+            sitelinks ?: emptyMap()
+
+        fun isMissing(): Boolean =
+            "-1" == id && missing != null
+    }
+
+    class Label(private val language: String?, private val value: String?) {
+        fun language(): String =
+            StringUtils.defaultString(language)
+
+        fun value(): String =
+            StringUtils.defaultString(value)
+    }
+
+    class SiteLink {
+        val site: String? = null
+            get() = StringUtils.defaultString(field)
+
+        private val title: String? = null
+            get() = StringUtils.defaultString(field)
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/model/WikiSite.java

@@ -1,292 +0,0 @@
-package fr.free.nrw.commons.wikidata.model;
-
-import android.net.Uri;
-import android.os.Parcel;
-import android.os.Parcelable;
-import android.text.TextUtils;
-
-import androidx.annotation.NonNull;
-
-import com.google.gson.annotations.SerializedName;
-
-import org.apache.commons.lang3.StringUtils;
-import fr.free.nrw.commons.language.AppLanguageLookUpTable;
-
-/**
- * The base URL and Wikipedia language code for a MediaWiki site. Examples:
- *
- * <ul>
- *     <lh>Name: scheme / authority / language code</lh>
- *     <li>English Wikipedia: HTTPS / en.wikipedia.org / en</li>
- *     <li>Chinese Wikipedia: HTTPS / zh.wikipedia.org / zh-hans or zh-hant</li>
- *     <li>Meta-Wiki: HTTPS / meta.wikimedia.org / (none)</li>
- *     <li>Test Wikipedia: HTTPS / test.wikipedia.org / test</li>
- *     <li>Võro Wikipedia: HTTPS / fiu-vro.wikipedia.org / fiu-vro</li>
- *     <li>Simple English Wikipedia: HTTPS / simple.wikipedia.org / simple</li>
- *     <li>Simple English Wikipedia (beta cluster mirror): HTTP / simple.wikipedia.beta.wmflabs.org / simple</li>
- *     <li>Development: HTTP / 192.168.1.11:8080 / (none)</li>
- * </ul>
- *
- * <strong>As shown above, the language code or mapping is part of the authority:</strong>
- * <ul>
- *     <lh>Validity: authority / language code</lh>
- *     <li>Correct: "test.wikipedia.org" / "test"</li>
- *     <li>Correct: "wikipedia.org", ""</li>
- *     <li>Correct: "no.wikipedia.org", "nb"</li>
- *     <li>Incorrect: "wikipedia.org", "test"</li>
- * </ul>
- */
-public class WikiSite implements Parcelable {
-    private static String WIKIPEDIA_URL = "https://wikipedia.org/";
-
-    public static final String DEFAULT_SCHEME = "https";
-    private static String DEFAULT_BASE_URL = WIKIPEDIA_URL;
-
-    public static final Parcelable.Creator<WikiSite> CREATOR = new Parcelable.Creator<WikiSite>() {
-        @Override
-        public WikiSite createFromParcel(Parcel in) {
-            return new WikiSite(in);
-        }
-
-        @Override
-        public WikiSite[] newArray(int size) {
-            return new WikiSite[size];
-        }
-    };
-
-    // todo: remove @SerializedName. this is now in the TypeAdapter and a "uri" case may be added
-    @SerializedName("domain") @NonNull private final Uri uri;
-    @NonNull private String languageCode;
-
-    public static WikiSite forLanguageCode(@NonNull String languageCode) {
-        Uri uri = ensureScheme(Uri.parse(DEFAULT_BASE_URL));
-        return new WikiSite((languageCode.isEmpty()
-                ? "" : (languageCodeToSubdomain(languageCode) + ".")) + uri.getAuthority(),
-                languageCode);
-    }
-
-    public WikiSite(@NonNull Uri uri) {
-        Uri tempUri = ensureScheme(uri);
-        String authority = tempUri.getAuthority();
-        if (("wikipedia.org".equals(authority) || "www.wikipedia.org".equals(authority))
-                && tempUri.getPath() != null && tempUri.getPath().startsWith("/wiki")) {
-            // Special case for Wikipedia only: assume English subdomain when none given.
-            authority = "en.wikipedia.org";
-        }
-        String langVariant = getLanguageVariantFromUri(tempUri);
-        if (!TextUtils.isEmpty(langVariant)) {
-            languageCode = langVariant;
-        } else {
-            languageCode = authorityToLanguageCode(authority);
-        }
-        this.uri = new Uri.Builder()
-                .scheme(tempUri.getScheme())
-                .encodedAuthority(authority)
-                .build();
-    }
-
-    /** Get language variant code from a Uri, e.g. "zh-*", otherwise returns empty string. */
-    @NonNull
-    private String getLanguageVariantFromUri(@NonNull Uri uri) {
-        if (TextUtils.isEmpty(uri.getPath())) {
-            return "";
-        }
-        String[] parts = StringUtils.split(StringUtils.defaultString(uri.getPath()), '/');
-        return parts.length > 1 && !parts[0].equals("wiki") ? parts[0] : "";
-    }
-
-    public WikiSite(@NonNull String url) {
-        this(url.startsWith("http") ? Uri.parse(url) : url.startsWith("//")
-                ? Uri.parse(DEFAULT_SCHEME + ":" + url) : Uri.parse(DEFAULT_SCHEME + "://" + url));
-    }
-
-    public WikiSite(@NonNull String authority, @NonNull String languageCode) {
-        this(authority);
-        this.languageCode = languageCode;
-    }
-
-    @NonNull
-    public String scheme() {
-        return TextUtils.isEmpty(uri.getScheme()) ? DEFAULT_SCHEME : uri.getScheme();
-    }
-
-    /**
-     * @return The complete wiki authority including language subdomain but not including scheme,
-     *         authentication, port, nor trailing slash.
-     *
-     * @see <a href='https://en.wikipedia.org/wiki/Uniform_Resource_Locator#Syntax'>URL syntax</a>
-     */
-    @NonNull
-    public String authority() {
-        return uri.getAuthority();
-    }
-
-    /**
-     * Like {@link #authority()} but with a "m." between the language subdomain and the rest of the host.
-     * Examples:
-     *
-     * <ul>
-     *     <li>English Wikipedia: en.m.wikipedia.org</li>
-     *     <li>Chinese Wikipedia: zh.m.wikipedia.org</li>
-     *     <li>Meta-Wiki: meta.m.wikimedia.org</li>
-     *     <li>Test Wikipedia: test.m.wikipedia.org</li>
-     *     <li>Võro Wikipedia: fiu-vro.m.wikipedia.org</li>
-     *     <li>Simple English Wikipedia: simple.m.wikipedia.org</li>
-     *     <li>Simple English Wikipedia (beta cluster mirror): simple.m.wikipedia.beta.wmflabs.org</li>
-     *     <li>Development: m.192.168.1.11</li>
-     * </ul>
-     */
-    @NonNull
-    public String mobileAuthority() {
-        return authorityToMobile(authority());
-    }
-
-    /**
-     * Get wiki's mobile URL
-     * Eg. https://en.m.wikipedia.org
-     * @return
-     */
-    public String mobileUrl() {
-        return String.format("%1$s://%2$s", scheme(), mobileAuthority());
-    }
-
-    @NonNull
-    public String subdomain() {
-        return languageCodeToSubdomain(languageCode);
-    }
-
-    /**
-     * @return A path without an authority for the segment including a leading "/".
-     */
-    @NonNull
-    public String path(@NonNull String segment) {
-        return "/w/" + segment;
-    }
-
-
-    @NonNull public Uri uri() {
-        return uri;
-    }
-
-    /**
-     * @return The canonical URL. e.g., https://en.wikipedia.org.
-     */
-    @NonNull public String url() {
-        return uri.toString();
-    }
-
-    /**
-     * @return The canonical URL for segment. e.g., https://en.wikipedia.org/w/foo.
-     */
-    @NonNull public String url(@NonNull String segment) {
-        return url() + path(segment);
-    }
-
-    /**
-     * @return The wiki language code which may differ from the language subdomain. Empty if
-     *         language code is unknown. Ex: "en", "zh-hans", ""
-     *
-     * @see AppLanguageLookUpTable
-     */
-    @NonNull
-    public String languageCode() {
-        return languageCode;
-    }
-
-    // Auto-generated
-    @Override
-    public boolean equals(Object o) {
-        if (this == o) {
-            return true;
-        }
-        if (o == null || getClass() != o.getClass()) {
-            return false;
-        }
-
-        WikiSite wiki = (WikiSite) o;
-
-        if (!uri.equals(wiki.uri)) {
-            return false;
-        }
-        return languageCode.equals(wiki.languageCode);
-    }
-
-    // Auto-generated
-    @Override
-    public int hashCode() {
-        int result = uri.hashCode();
-        result = 31 * result + languageCode.hashCode();
-        return result;
-    }
-
-    // Auto-generated
-    @Override
-    public String toString() {
-        return "WikiSite{"
-                + "uri=" + uri
-                + ", languageCode='" + languageCode + '\''
-                + '}';
-    }
-
-    @Override
-    public int describeContents() {
-        return 0;
-    }
-
-    @Override
-    public void writeToParcel(@NonNull Parcel dest, int flags) {
-        dest.writeParcelable(uri, 0);
-        dest.writeString(languageCode);
-    }
-
-    protected WikiSite(@NonNull Parcel in) {
-        this.uri = in.readParcelable(Uri.class.getClassLoader());
-        this.languageCode = in.readString();
-    }
-
-    @NonNull
-    private static String languageCodeToSubdomain(@NonNull String languageCode) {
-        switch (languageCode) {
-            case AppLanguageLookUpTable.SIMPLIFIED_CHINESE_LANGUAGE_CODE:
-            case AppLanguageLookUpTable.TRADITIONAL_CHINESE_LANGUAGE_CODE:
-            case AppLanguageLookUpTable.CHINESE_CN_LANGUAGE_CODE:
-            case AppLanguageLookUpTable.CHINESE_HK_LANGUAGE_CODE:
-            case AppLanguageLookUpTable.CHINESE_MO_LANGUAGE_CODE:
-            case AppLanguageLookUpTable.CHINESE_SG_LANGUAGE_CODE:
-            case AppLanguageLookUpTable.CHINESE_TW_LANGUAGE_CODE:
-                return AppLanguageLookUpTable.CHINESE_LANGUAGE_CODE;
-            case AppLanguageLookUpTable.NORWEGIAN_BOKMAL_LANGUAGE_CODE:
-                return AppLanguageLookUpTable.NORWEGIAN_LEGACY_LANGUAGE_CODE; // T114042
-            default:
-                return languageCode;
-        }
-    }
-
-    @NonNull private static String authorityToLanguageCode(@NonNull String authority) {
-        String[] parts = authority.split("\\.");
-        final int minLengthForSubdomain = 3;
-        if (parts.length < minLengthForSubdomain
-                || parts.length == minLengthForSubdomain && parts[0].equals("m")) {
-            // ""
-            // wikipedia.org
-            // m.wikipedia.org
-            return "";
-        }
-        return parts[0];
-    }
-
-    @NonNull private static Uri ensureScheme(@NonNull Uri uri) {
-        if (TextUtils.isEmpty(uri.getScheme())) {
-            return uri.buildUpon().scheme(DEFAULT_SCHEME).build();
-        }
-        return uri;
-    }
-
-    /** @param authority Host and optional port. */
-    @NonNull private String authorityToMobile(@NonNull String authority) {
-        if (authority.startsWith("m.") || authority.contains(".m.")) {
-            return authority;
-        }
-        return authority.replaceFirst("^" + subdomain() + "\\.?", "$0m.");
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/WikiSite.kt

@@ -0,0 +1,269 @@
+package fr.free.nrw.commons.wikidata.model
+
+import android.net.Uri
+import android.os.Parcel
+import android.os.Parcelable
+import android.text.TextUtils
+import com.google.gson.annotations.SerializedName
+import fr.free.nrw.commons.language.AppLanguageLookUpTable
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.CHINESE_CN_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.CHINESE_HK_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.CHINESE_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.CHINESE_MO_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.CHINESE_SG_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.CHINESE_TW_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.NORWEGIAN_BOKMAL_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.NORWEGIAN_LEGACY_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.SIMPLIFIED_CHINESE_LANGUAGE_CODE
+import fr.free.nrw.commons.language.AppLanguageLookUpTable.Companion.TRADITIONAL_CHINESE_LANGUAGE_CODE
+import org.apache.commons.lang3.StringUtils
+import java.util.Locale
+
+/**
+ * The base URL and Wikipedia language code for a MediaWiki site. Examples:
+ *
+ *
+ * <lh>Name: scheme / authority / language code</lh>
+ *  * English Wikipedia: HTTPS / en.wikipedia.org / en
+ *  * Chinese Wikipedia: HTTPS / zh.wikipedia.org / zh-hans or zh-hant
+ *  * Meta-Wiki: HTTPS / meta.wikimedia.org / (none)
+ *  * Test Wikipedia: HTTPS / test.wikipedia.org / test
+ *  * Võro Wikipedia: HTTPS / fiu-vro.wikipedia.org / fiu-vro
+ *  * Simple English Wikipedia: HTTPS / simple.wikipedia.org / simple
+ *  * Simple English Wikipedia (beta cluster mirror): HTTP / simple.wikipedia.beta.wmflabs.org / simple
+ *  * Development: HTTP / 192.168.1.11:8080 / (none)
+ *
+ *
+ * **As shown above, the language code or mapping is part of the authority:**
+ *
+ * <lh>Validity: authority / language code</lh>
+ *  * Correct: "test.wikipedia.org" / "test"
+ *  * Correct: "wikipedia.org", ""
+ *  * Correct: "no.wikipedia.org", "nb"
+ *  * Incorrect: "wikipedia.org", "test"
+ *
+ */
+class WikiSite : Parcelable {
+    //TODO: remove @SerializedName. this is now in the TypeAdapter and a "uri" case may be added
+    @SerializedName("domain")
+    private val uri: Uri
+
+    private var languageCode: String? = null
+
+    constructor(uri: Uri) {
+        val tempUri = ensureScheme(uri)
+        var authority = tempUri.authority
+
+        if (authority.isWikipedia && tempUri.path?.startsWith("/wiki") == true) {
+            // Special case for Wikipedia only: assume English subdomain when none given.
+            authority = "en.wikipedia.org"
+        }
+
+        val langVariant = getLanguageVariantFromUri(tempUri)
+        languageCode = if (!TextUtils.isEmpty(langVariant)) {
+            langVariant
+        } else {
+            authorityToLanguageCode(authority!!)
+        }
+
+        this.uri = Uri.Builder()
+            .scheme(tempUri.scheme)
+            .encodedAuthority(authority)
+            .build()
+    }
+
+    private val String?.isWikipedia: Boolean get() =
+        (this == "wikipedia.org" || this == "www.wikipedia.org")
+
+    /** Get language variant code from a Uri, e.g. "zh-*", otherwise returns empty string.  */
+    private fun getLanguageVariantFromUri(uri: Uri): String {
+        if (TextUtils.isEmpty(uri.path)) {
+            return ""
+        }
+        val parts = StringUtils.split(StringUtils.defaultString(uri.path), '/')
+        return if (parts.size > 1 && parts[0] != "wiki") parts[0] else ""
+    }
+
+    constructor(url: String) : this(
+        if (url.startsWith("http")) Uri.parse(url) else if (url.startsWith("//"))
+            Uri.parse("$DEFAULT_SCHEME:$url")
+        else
+            Uri.parse("$DEFAULT_SCHEME://$url")
+    )
+
+    constructor(authority: String, languageCode: String) : this(authority) {
+        this.languageCode = languageCode
+    }
+
+    fun scheme(): String =
+        if (TextUtils.isEmpty(uri.scheme)) DEFAULT_SCHEME else uri.scheme!!
+
+    /**
+     * @return The complete wiki authority including language subdomain but not including scheme,
+     * authentication, port, nor trailing slash.
+     *
+     * @see [URL syntax](https://en.wikipedia.org/wiki/Uniform_Resource_Locator.Syntax)
+     */
+    fun authority(): String = uri.authority!!
+
+    /**
+     * Like [.authority] but with a "m." between the language subdomain and the rest of the host.
+     * Examples:
+     *
+     *
+     *  * English Wikipedia: en.m.wikipedia.org
+     *  * Chinese Wikipedia: zh.m.wikipedia.org
+     *  * Meta-Wiki: meta.m.wikimedia.org
+     *  * Test Wikipedia: test.m.wikipedia.org
+     *  * Võro Wikipedia: fiu-vro.m.wikipedia.org
+     *  * Simple English Wikipedia: simple.m.wikipedia.org
+     *  * Simple English Wikipedia (beta cluster mirror): simple.m.wikipedia.beta.wmflabs.org
+     *  * Development: m.192.168.1.11
+     *
+     */
+    fun mobileAuthority(): String = authorityToMobile(authority())
+
+    /**
+     * Get wiki's mobile URL
+     * Eg. https://en.m.wikipedia.org
+     * @return
+     */
+    fun mobileUrl(): String = String.format("%1\$s://%2\$s", scheme(), mobileAuthority())
+
+    fun subdomain(): String = languageCodeToSubdomain(languageCode!!)
+
+    /**
+     * @return A path without an authority for the segment including a leading "/".
+     */
+    fun path(segment: String): String = "/w/$segment"
+
+
+    fun uri(): Uri = uri
+
+    /**
+     * @return The canonical URL. e.g., https://en.wikipedia.org.
+     */
+    fun url(): String = uri.toString()
+
+    /**
+     * @return The canonical URL for segment. e.g., https://en.wikipedia.org/w/foo.
+     */
+    fun url(segment: String): String = url() + path(segment)
+
+    /**
+     * @return The wiki language code which may differ from the language subdomain. Empty if
+     * language code is unknown. Ex: "en", "zh-hans", ""
+     *
+     * @see AppLanguageLookUpTable
+     */
+    fun languageCode(): String = languageCode!!
+
+    // Auto-generated
+    override fun equals(o: Any?): Boolean {
+        if (this === o) {
+            return true
+        }
+        if (o == null || javaClass != o.javaClass) {
+            return false
+        }
+
+        val wiki = o as WikiSite
+
+        if (uri != wiki.uri) {
+            return false
+        }
+        return languageCode == wiki.languageCode
+    }
+
+    // Auto-generated
+    override fun hashCode(): Int {
+        var result = uri.hashCode()
+        result = 31 * result + languageCode.hashCode()
+        return result
+    }
+
+    // Auto-generated
+    override fun toString(): String {
+        return ("WikiSite{"
+                + "uri=" + uri
+                + ", languageCode='" + languageCode + '\''
+                + '}')
+    }
+
+    override fun describeContents(): Int = 0
+
+    override fun writeToParcel(dest: Parcel, flags: Int) {
+        dest.writeParcelable(uri, 0)
+        dest.writeString(languageCode)
+    }
+
+    protected constructor(`in`: Parcel) {
+        uri = `in`.readParcelable(Uri::class.java.classLoader)!!
+        languageCode = `in`.readString()
+    }
+
+    /** @param authority Host and optional port.
+     */
+    private fun authorityToMobile(authority: String): String {
+        if (authority.startsWith("m.") || authority.contains(".m.")) {
+            return authority
+        }
+        return authority.replaceFirst(("^" + subdomain() + "\\.?").toRegex(), "$0m.")
+    }
+
+    companion object {
+        const val WIKIPEDIA_URL = "https://wikipedia.org/"
+        const val DEFAULT_SCHEME: String = "https"
+
+        @JvmField
+        val CREATOR: Parcelable.Creator<WikiSite> = object : Parcelable.Creator<WikiSite> {
+            override fun createFromParcel(parcel: Parcel): WikiSite {
+                return WikiSite(parcel)
+            }
+
+            override fun newArray(size: Int): Array<WikiSite?> {
+                return arrayOfNulls(size)
+            }
+        }
+
+        fun forDefaultLocaleLanguageCode(): WikiSite {
+            val languageCode: String = Locale.getDefault().language
+            val subdomain = if (languageCode.isEmpty()) "" else languageCodeToSubdomain(languageCode) + "."
+            val uri = ensureScheme(Uri.parse(WIKIPEDIA_URL))
+            return WikiSite(subdomain + uri.authority, languageCode)
+        }
+
+        private fun languageCodeToSubdomain(languageCode: String): String = when (languageCode) {
+            SIMPLIFIED_CHINESE_LANGUAGE_CODE,
+            TRADITIONAL_CHINESE_LANGUAGE_CODE,
+            CHINESE_CN_LANGUAGE_CODE,
+            CHINESE_HK_LANGUAGE_CODE,
+            CHINESE_MO_LANGUAGE_CODE,
+            CHINESE_SG_LANGUAGE_CODE,
+            CHINESE_TW_LANGUAGE_CODE -> CHINESE_LANGUAGE_CODE
+
+            NORWEGIAN_BOKMAL_LANGUAGE_CODE -> NORWEGIAN_LEGACY_LANGUAGE_CODE // T114042
+
+            else -> languageCode
+        }
+
+        private fun authorityToLanguageCode(authority: String): String {
+            val parts = authority.split("\\.".toRegex()).dropLastWhile { it.isEmpty() }.toTypedArray()
+            val minLengthForSubdomain = 3
+            if (parts.size < minLengthForSubdomain || parts.size == minLengthForSubdomain && parts[0] == "m") {
+                // ""
+                // wikipedia.org
+                // m.wikipedia.org
+                return ""
+            }
+            return parts[0]
+        }
+
+        private fun ensureScheme(uri: Uri): Uri {
+            if (TextUtils.isEmpty(uri.scheme)) {
+                return uri.buildUpon().scheme(DEFAULT_SCHEME).build()
+            }
+            return uri
+        }
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/model/edit/Edit.java

@@ -1,36 +0,0 @@
-package fr.free.nrw.commons.wikidata.model.edit;
-
-import androidx.annotation.Nullable;
-import fr.free.nrw.commons.wikidata.mwapi.MwPostResponse;
-
-public class Edit extends MwPostResponse {
-    @Nullable private Result edit;
-
-    @Nullable public Result edit() {
-    return edit;
-    }
-
-    public class Result {
-        @Nullable private String result;
-        @Nullable private String code;
-        @Nullable private String info;
-        @Nullable private String warning;
-
-        public boolean editSucceeded() {
-            return "Success".equals(result);
-        }
-
-        @Nullable public String code() {
-            return code;
-        }
-
-        @Nullable public String info() {
-            return info;
-        }
-
-        @Nullable public String warning() {
-            return warning;
-        }
-
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/edit/Edit.kt

@@ -0,0 +1,25 @@
+package fr.free.nrw.commons.wikidata.model.edit
+
+import fr.free.nrw.commons.wikidata.mwapi.MwPostResponse
+
+class Edit : MwPostResponse() {
+    private val edit: Result? = null
+
+    fun edit(): Result? = edit
+
+    class Result {
+        private val result: String? = null
+        private val code: String? = null
+        private val info: String? = null
+        private val warning: String? = null
+
+        fun editSucceeded(): Boolean =
+            "Success" == result
+
+        fun code(): String? = code
+
+        fun info(): String? = info
+
+        fun warning(): String? = warning
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/model/edit/EditResult.java

@@ -1,31 +0,0 @@
-package fr.free.nrw.commons.wikidata.model.edit;
-
-import android.os.Parcel;
-import android.os.Parcelable;
-import fr.free.nrw.commons.wikidata.model.BaseModel;
-
-public abstract class EditResult extends BaseModel implements Parcelable {
-    private final String result;
-
-    public EditResult(String result) {
-        this.result = result;
-    }
-
-    protected EditResult(Parcel in) {
-        this.result = in.readString();
-    }
-
-    public String getResult() {
-        return result;
-    }
-
-    @Override
-    public int describeContents() {
-        return 0;
-    }
-
-    @Override
-    public void writeToParcel(Parcel dest, int flags) {
-        dest.writeString(result);
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/gallery/ExtMetadata.java

@@ -1,102 +0,0 @@
-package fr.free.nrw.commons.wikidata.model.gallery;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import com.google.gson.annotations.SerializedName;
-
-import org.apache.commons.lang3.StringUtils;
-
-
-public class ExtMetadata {
-    @SerializedName("DateTime") @Nullable private Values dateTime;
-    @SerializedName("ObjectName") @Nullable private Values objectName;
-    @SerializedName("CommonsMetadataExtension") @Nullable private Values commonsMetadataExtension;
-    @SerializedName("Categories") @Nullable private Values categories;
-    @SerializedName("Assessments") @Nullable private Values assessments;
-    @SerializedName("GPSLatitude") @Nullable private Values gpsLatitude;
-    @SerializedName("GPSLongitude") @Nullable private Values gpsLongitude;
-    @SerializedName("ImageDescription") @Nullable private Values imageDescription;
-    @SerializedName("DateTimeOriginal") @Nullable private Values dateTimeOriginal;
-    @SerializedName("Artist") @Nullable private Values artist;
-    @SerializedName("Credit") @Nullable private Values credit;
-    @SerializedName("Permission") @Nullable private Values permission;
-    @SerializedName("AuthorCount") @Nullable private Values authorCount;
-    @SerializedName("LicenseShortName") @Nullable private Values licenseShortName;
-    @SerializedName("UsageTerms") @Nullable private Values usageTerms;
-    @SerializedName("LicenseUrl") @Nullable private Values licenseUrl;
-    @SerializedName("AttributionRequired") @Nullable private Values attributionRequired;
-    @SerializedName("Copyrighted") @Nullable private Values copyrighted;
-    @SerializedName("Restrictions") @Nullable private Values restrictions;
-    @SerializedName("License") @Nullable private Values license;
-
-    @NonNull public String licenseShortName() {
-        return StringUtils.defaultString(licenseShortName == null ? null : licenseShortName.value());
-    }
-
-    @NonNull public String licenseUrl() {
-        return StringUtils.defaultString(licenseUrl == null ? null : licenseUrl.value());
-    }
-
-    @NonNull public String license() {
-        return StringUtils.defaultString(license == null ? null : license.value());
-    }
-
-    @NonNull public String imageDescription() {
-        return StringUtils.defaultString(imageDescription == null ? null : imageDescription.value());
-    }
-
-    @NonNull public String imageDescriptionSource() {
-        return StringUtils.defaultString(imageDescription == null ? null : imageDescription.source());
-    }
-
-    @NonNull public String objectName() {
-        return StringUtils.defaultString(objectName == null ? null : objectName.value());
-    }
-
-    @NonNull public String usageTerms() {
-        return StringUtils.defaultString(usageTerms == null ? null : usageTerms.value());
-    }
-
-    @NonNull public String dateTimeOriginal() {
-        return StringUtils.defaultString(dateTimeOriginal == null ? null : dateTimeOriginal.value());
-    }
-
-    @NonNull public String dateTime() {
-        return StringUtils.defaultString(dateTime == null ? null : dateTime.value());
-    }
-
-    @NonNull public String artist() {
-        return StringUtils.defaultString(artist == null ? null : artist.value());
-    }
-
-    @NonNull public String getCategories() {
-        return StringUtils.defaultString(categories == null ? null : categories.value());
-    }
-
-    @NonNull public String getGpsLatitude() {
-        return StringUtils.defaultString(gpsLatitude == null ? null : gpsLatitude.value());
-    }
-
-    @NonNull public String getGpsLongitude() {
-        return StringUtils.defaultString(gpsLongitude == null ? null : gpsLongitude.value());
-    }
-
-    @NonNull public String credit() {
-        return StringUtils.defaultString(credit == null ? null : credit.value());
-    }
-
-    public class Values {
-        @Nullable private String value;
-        @Nullable private String source;
-        @Nullable private String hidden;
-
-        @Nullable public String value() {
-            return value;
-        }
-
-        @Nullable public String source() {
-            return source;
-        }
-    }
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/gallery/ExtMetadata.kt

@@ -0,0 +1,61 @@
+package fr.free.nrw.commons.wikidata.model.gallery
+
+import com.google.gson.annotations.SerializedName
+import org.apache.commons.lang3.StringUtils
+
+class ExtMetadata {
+    @SerializedName("DateTime") private val dateTime: Values? = null
+    @SerializedName("ObjectName") private val objectName: Values? = null
+    @SerializedName("CommonsMetadataExtension") private val commonsMetadataExtension: Values? = null
+    @SerializedName("Categories") private val categories: Values? = null
+    @SerializedName("Assessments") private val assessments: Values? = null
+    @SerializedName("GPSLatitude") private val gpsLatitude: Values? = null
+    @SerializedName("GPSLongitude") private val gpsLongitude: Values? = null
+    @SerializedName("ImageDescription") private val imageDescription: Values? = null
+    @SerializedName("DateTimeOriginal") private val dateTimeOriginal: Values? = null
+    @SerializedName("Artist") private val artist: Values? = null
+    @SerializedName("Credit") private val credit: Values? = null
+    @SerializedName("Permission") private val permission: Values? = null
+    @SerializedName("AuthorCount") private val authorCount: Values? = null
+    @SerializedName("LicenseShortName") private val licenseShortName: Values? = null
+    @SerializedName("UsageTerms") private val usageTerms: Values? = null
+    @SerializedName("LicenseUrl") private val licenseUrl: Values? = null
+    @SerializedName("AttributionRequired") private val attributionRequired: Values? = null
+    @SerializedName("Copyrighted") private val copyrighted: Values? = null
+    @SerializedName("Restrictions") private val restrictions: Values? = null
+    @SerializedName("License") private val license: Values? = null
+
+    fun licenseShortName(): String = licenseShortName?.value ?: ""
+
+    fun licenseUrl(): String = licenseUrl?.value ?: ""
+
+    fun license(): String = license?.value ?: ""
+
+    fun imageDescription(): String = imageDescription?.value ?: ""
+
+    fun imageDescriptionSource(): String = imageDescription?.source ?: ""
+
+    fun objectName(): String = objectName?.value ?: ""
+
+    fun usageTerms(): String = usageTerms?.value ?: ""
+
+    fun dateTimeOriginal(): String = dateTimeOriginal?.value ?: ""
+
+    fun dateTime(): String = dateTime?.value ?: ""
+
+    fun artist(): String = artist?.value ?: ""
+
+    fun categories(): String = categories?.value ?: ""
+
+    fun gpsLatitude(): String = gpsLatitude?.value ?: ""
+
+    fun gpsLongitude(): String = gpsLongitude?.value ?: ""
+
+    fun credit(): String = credit?.value ?: ""
+
+    class Values {
+        val value: String? = null
+        val source: String? = null
+        val hidden: String? = null
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/model/gallery/ImageInfo.java

@@ -1,121 +0,0 @@
-package fr.free.nrw.commons.wikidata.model.gallery;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import com.google.gson.annotations.SerializedName;
-
-import org.apache.commons.lang3.StringUtils;
-
-import java.io.Serializable;
-
-/**
- * Gson POJO for a standard image info object as returned by the API ImageInfo module
- */
-
-public class ImageInfo implements Serializable {
-    private int size;
-    private int width;
-    private int height;
-    @Nullable private String source;
-    @SerializedName("thumburl") @Nullable private String thumbUrl;
-    @SerializedName("thumbwidth") private int thumbWidth;
-    @SerializedName("thumbheight") private int thumbHeight;
-    @SerializedName("url") @Nullable private String originalUrl;
-    @SerializedName("descriptionurl") @Nullable private String descriptionUrl;
-    @SerializedName("descriptionshorturl") @Nullable private String descriptionShortUrl;
-    @SerializedName("mime") @Nullable private String mimeType;
-    @SerializedName("extmetadata")@Nullable private ExtMetadata metadata;
-    @Nullable private String user;
-    @Nullable private String timestamp;
-
-    /**
-     * Query width, default width parameter of the API query in pixels.
-     */
-    final private static int QUERY_WIDTH = 640;
-
-    /**
-     * Threshold height, the minimum height of the image in pixels.
-     */
-    final private static int THRESHOLD_HEIGHT = 220;
-
-    @NonNull
-    public String getSource() {
-        return StringUtils.defaultString(source);
-    }
-
-    public void setSource(@Nullable String source) {
-        this.source = source;
-    }
-
-    public int getSize() {
-        return size;
-    }
-
-    public int getWidth() {
-        return width;
-    }
-
-    public int getHeight() {
-        return height;
-    }
-
-    /**
-     * Get the thumbnail width.
-     * @return
-     */
-    public int getThumbWidth() { return thumbWidth; }
-
-    /**
-     * Get the thumbnail height.
-     * @return
-     */
-    public int getThumbHeight() { return thumbHeight; }
-
-    @NonNull public String getMimeType() {
-        return StringUtils.defaultString(mimeType, "*/*");
-    }
-
-    @NonNull public String getThumbUrl() {
-        updateThumbUrl();
-        return StringUtils.defaultString(thumbUrl);
-    }
-
-    @NonNull public String getOriginalUrl() {
-        return StringUtils.defaultString(originalUrl);
-    }
-
-    @NonNull public String getUser() {
-        return StringUtils.defaultString(user);
-    }
-
-    @NonNull public String getTimestamp() {
-        return StringUtils.defaultString(timestamp);
-    }
-
-    @Nullable public ExtMetadata getMetadata() {
-        return metadata;
-    }
-
-    /**
-     * Updates the ThumbUrl if image dimensions are not sufficient.
-     * Specifically, in panoramic images the height retrieved is less than required due to large width to height ratio,
-     * so we update the thumb url keeping a minimum height threshold.
-     */
-    private void updateThumbUrl() {
-        // If thumbHeight retrieved from API is less than THRESHOLD_HEIGHT
-        if(getThumbHeight() < THRESHOLD_HEIGHT){
-            // If thumbWidthRetrieved is same as queried width ( If not tells us that the image has no larger dimensions. )
-            if(getThumbWidth() == QUERY_WIDTH){
-                // Calculate new width depending on the aspect ratio.
-                final int finalWidth = (int)(THRESHOLD_HEIGHT * getThumbWidth() * 1.0 / getThumbHeight());
-                thumbHeight = THRESHOLD_HEIGHT;
-                thumbWidth = finalWidth;
-                final String toReplace = "/" + QUERY_WIDTH + "px";
-                final int position = thumbUrl.lastIndexOf(toReplace);
-                thumbUrl = (new StringBuilder(thumbUrl)).replace(position, position + toReplace.length(), "/" + thumbWidth + "px").toString();
-            }
-        }
-    }
-
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/gallery/ImageInfo.kt

@@ -0,0 +1,129 @@
+package fr.free.nrw.commons.wikidata.model.gallery
+
+import com.google.gson.annotations.SerializedName
+import org.apache.commons.lang3.StringUtils
+import java.io.Serializable
+
+/**
+ * Gson POJO for a standard image info object as returned by the API ImageInfo module
+ */
+open class ImageInfo : Serializable {
+    private val size = 0
+    private val width = 0
+    private val height = 0
+    private var source: String? = null
+
+    @SerializedName("thumburl")
+    private var thumbUrl: String? = null
+
+    @SerializedName("thumbwidth")
+    private var thumbWidth = 0
+
+    @SerializedName("thumbheight")
+    private var thumbHeight = 0
+
+    @SerializedName("url")
+    private val originalUrl: String? = null
+
+    @SerializedName("descriptionurl")
+    private val descriptionUrl: String? = null
+
+    @SerializedName("descriptionshorturl")
+    private val descriptionShortUrl: String? = null
+
+    @SerializedName("mime")
+    private val mimeType: String? = null
+
+    @SerializedName("extmetadata")
+    private val metadata: ExtMetadata? = null
+    private val user: String? = null
+    private val timestamp: String? = null
+
+    fun getSource(): String {
+        return source ?: ""
+    }
+
+    fun setSource(source: String?) {
+        this.source = source
+    }
+
+    fun getSize(): Int {
+        return size
+    }
+
+    fun getWidth(): Int {
+        return width
+    }
+
+    fun getHeight(): Int {
+        return height
+    }
+
+    fun getThumbWidth(): Int {
+        return thumbWidth
+    }
+
+    fun getThumbHeight(): Int {
+        return thumbHeight
+    }
+
+    fun getMimeType(): String {
+        return mimeType ?: "*/*"
+    }
+
+    fun getThumbUrl(): String {
+        updateThumbUrl()
+        return thumbUrl ?: ""
+    }
+
+    fun getOriginalUrl(): String {
+        return originalUrl ?: ""
+    }
+
+    fun getUser(): String {
+        return user ?: ""
+    }
+
+    fun getTimestamp(): String {
+        return timestamp ?: ""
+    }
+
+    fun getMetadata(): ExtMetadata? = metadata
+
+    /**
+     * Updates the ThumbUrl if image dimensions are not sufficient. Specifically, in panoramic
+     * images the height retrieved is less than required due to large width to height ratio, so we
+     * update the thumb url keeping a minimum height threshold.
+     */
+    private fun updateThumbUrl() {
+        // If thumbHeight retrieved from API is less than THRESHOLD_HEIGHT
+        if (getThumbHeight() < THRESHOLD_HEIGHT) {
+            // If thumbWidthRetrieved is same as queried width ( If not tells us that the image has no larger dimensions. )
+            if (getThumbWidth() == QUERY_WIDTH) {
+                // Calculate new width depending on the aspect ratio.
+                val finalWidth = (THRESHOLD_HEIGHT * getThumbWidth() * 1.0
+                        / getThumbHeight()).toInt()
+                thumbHeight = THRESHOLD_HEIGHT
+                thumbWidth = finalWidth
+                val toReplace = "/" + QUERY_WIDTH + "px"
+                val position = thumbUrl!!.lastIndexOf(toReplace)
+                thumbUrl = (StringBuilder(thumbUrl ?: "")).replace(
+                    position,
+                    position + toReplace.length, "/" + thumbWidth + "px"
+                ).toString()
+            }
+        }
+    }
+
+    companion object {
+        /**
+         * Query width, default width parameter of the API query in pixels.
+         */
+        private const val QUERY_WIDTH = 640
+
+        /**
+         * Threshold height, the minimum height of the image in pixels.
+         */
+        private const val THRESHOLD_HEIGHT = 220
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/model/gallery/VideoInfo.java

@@ -1,16 +0,0 @@
-package fr.free.nrw.commons.wikidata.model.gallery;
-
-import androidx.annotation.Nullable;
-
-import com.google.gson.annotations.SerializedName;
-
-import java.util.List;
-
-/**
- * Gson POJO for a standard video info object as returned by the API VideoInfo module
- */
-public class VideoInfo extends ImageInfo {
-     @Nullable private List<String> codecs;
-    @SuppressWarnings("unused,NullableProblems") @Nullable private String name;
-    @SuppressWarnings("unused,NullableProblems") @Nullable @SerializedName("short_name") private String shortName;
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/notifications/Notification.java

@@ -1,190 +0,0 @@
-package fr.free.nrw.commons.wikidata.model.notifications;
-
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
-
-import com.google.gson.JsonElement;
-import com.google.gson.JsonObject;
-import com.google.gson.annotations.SerializedName;
-
-import fr.free.nrw.commons.utils.DateUtil;
-import org.apache.commons.lang3.StringUtils;
-import fr.free.nrw.commons.wikidata.GsonUtil;
-
-import java.text.ParseException;
-import java.util.Date;
-import timber.log.Timber;
-
-public class Notification {
-    @Nullable private String wiki;
-     private long id;
-    @Nullable private String type;
-    @Nullable private String category;
-
-    @Nullable private Title title;
-    @Nullable private Timestamp timestamp;
-    @SerializedName("*") @Nullable private Contents contents;
-
-    @NonNull public String wiki() {
-        return StringUtils.defaultString(wiki);
-    }
-
-    public long id() {
-        return id;
-    }
-
-    public void setId(final long id) {
-        this.id = id;
-    }
-
-    public long key() {
-        return id + wiki().hashCode();
-    }
-
-    @NonNull public String type() {
-        return StringUtils.defaultString(type);
-    }
-
-    @Nullable public Title title() {
-        return title;
-    }
-
-    @Nullable public Contents getContents() {
-        return contents;
-    }
-
-    public void setContents(@Nullable final Contents contents) {
-        this.contents = contents;
-    }
-
-    @NonNull public Date getTimestamp() {
-        return timestamp != null ? timestamp.date() : new Date();
-    }
-
-    public void setTimestamp(@Nullable final Timestamp timestamp) {
-        this.timestamp = timestamp;
-    }
-
-    @NonNull String getUtcIso8601() {
-        return StringUtils.defaultString(timestamp != null ? timestamp.utciso8601 : null);
-    }
-
-    public boolean isFromWikidata() {
-        return wiki().equals("wikidatawiki");
-    }
-
-    @Override public String toString() {
-        return Long.toString(id);
-    }
-
-    public static class Title {
-        @Nullable private String full;
-        @Nullable private String text;
-
-        @NonNull public String text() {
-            return StringUtils.defaultString(text);
-        }
-
-        @NonNull public String full() {
-            return StringUtils.defaultString(full);
-        }
-    }
-
-    public static class Timestamp {
-        @Nullable private String utciso8601;
-
-        public void setUtciso8601(@Nullable final String utciso8601) {
-            this.utciso8601 = utciso8601;
-        }
-
-        public Date date() {
-            try {
-                return DateUtil.iso8601DateParse(utciso8601);
-            } catch (ParseException e) {
-                Timber.e(e);
-                return new Date();
-            }
-        }
-    }
-
-    public static class Link {
-        @Nullable private String url;
-        @Nullable private String label;
-        @Nullable private String tooltip;
-        @Nullable private String description;
-        @Nullable private String icon;
-
-        @NonNull public String getUrl() {
-            return StringUtils.defaultString(url);
-        }
-
-        public void setUrl(@Nullable final String url) {
-            this.url = url;
-        }
-
-        @NonNull public String getTooltip() {
-            return StringUtils.defaultString(tooltip);
-        }
-
-        @NonNull public String getLabel() {
-            return StringUtils.defaultString(label);
-        }
-
-        @NonNull public String getIcon() {
-            return StringUtils.defaultString(icon);
-        }
-    }
-
-    public static class Links {
-        @Nullable private JsonElement primary;
-        private Link primaryLink;
-
-        public void setPrimary(@Nullable final JsonElement primary) {
-            this.primary = primary;
-        }
-
-        @Nullable public Link getPrimary() {
-            if (primary == null) {
-                return null;
-            }
-            if (primaryLink == null && primary instanceof JsonObject) {
-                primaryLink = GsonUtil.getDefaultGson().fromJson(primary, Link.class);
-            }
-            return primaryLink;
-        }
-
-    }
-
-    public static class Contents {
-        @Nullable private String header;
-        @Nullable private String compactHeader;
-        @Nullable private String body;
-        @Nullable private String icon;
-        @Nullable private Links links;
-
-        @NonNull public String getHeader() {
-            return StringUtils.defaultString(header);
-        }
-
-        @NonNull public String getCompactHeader() {
-            return StringUtils.defaultString(compactHeader);
-        }
-
-        public void setCompactHeader(@Nullable final String compactHeader) {
-            this.compactHeader = compactHeader;
-        }
-
-        @NonNull public String getBody() {
-            return StringUtils.defaultString(body);
-        }
-
-        @Nullable public Links getLinks() {
-            return links;
-        }
-
-        public void setLinks(@Nullable final Links links) {
-            this.links = links;
-        }
-    }
-
-}

app/src/main/java/fr/free/nrw/commons/wikidata/model/notifications/Notification.kt

@@ -0,0 +1,124 @@
+package fr.free.nrw.commons.wikidata.model.notifications
+
+import com.google.gson.JsonElement
+import com.google.gson.JsonObject
+import com.google.gson.annotations.SerializedName
+import fr.free.nrw.commons.utils.DateUtil.iso8601DateParse
+import fr.free.nrw.commons.wikidata.GsonUtil.defaultGson
+import org.apache.commons.lang3.StringUtils
+import timber.log.Timber
+import java.text.ParseException
+import java.util.Date
+
+class Notification {
+    private val wiki: String? = null
+    private var id: Long = 0
+    private val type: String? = null
+    private val category: String? = null
+
+    private val title: Title? = null
+    private var timestamp: Timestamp? = null
+
+    @SerializedName("*")
+    var contents: Contents? = null
+
+    fun wiki(): String = wiki ?: ""
+
+    fun id(): Long = id
+
+    fun setId(id: Long) {
+        this.id = id
+    }
+
+    fun key(): Long =
+        id + wiki().hashCode()
+
+    fun type(): String =
+        type ?: ""
+
+    fun title(): Title? = title
+
+    fun getTimestamp(): Date =
+        timestamp?.date() ?: Date()
+
+    fun setTimestamp(timestamp: Timestamp?) {
+        this.timestamp = timestamp
+    }
+
+    val utcIso8601: String
+        get() = timestamp?.utciso8601 ?: ""
+
+    val isFromWikidata: Boolean
+        get() = wiki() == "wikidatawiki"
+
+    override fun toString(): String =
+        id.toString()
+
+    class Title {
+        private val full: String? = null
+        private val text: String? = null
+
+        fun text(): String = text ?: ""
+
+        fun full(): String = full ?: ""
+    }
+
+    class Timestamp {
+        internal var utciso8601: String? = null
+
+        fun setUtciso8601(utciso8601: String?) {
+            this.utciso8601 = utciso8601
+        }
+
+        fun date(): Date {
+            try {
+                return iso8601DateParse(utciso8601 ?: "")
+            } catch (e: ParseException) {
+                Timber.e(e)
+                return Date()
+            }
+        }
+    }
+
+    class Link {
+        var url: String? = null
+            get() = field ?: ""
+        val label: String? = null
+            get() = field ?: ""
+        val tooltip: String? = null
+            get() = field ?: ""
+        private val description: String? = null
+        val icon: String? = null
+            get() = field ?: ""
+    }
+
+    class Links {
+        private var primary: JsonElement? = null
+        private var primaryLink: Link? = null
+
+        fun setPrimary(primary: JsonElement?) {
+            this.primary = primary
+        }
+
+        fun getPrimary(): Link? {
+            if (primary == null) {
+                return null
+            }
+            if (primaryLink == null && primary is JsonObject) {
+                primaryLink = defaultGson.fromJson(primary, Link::class.java)
+            }
+            return primaryLink
+        }
+    }
+
+    class Contents {
+        val header: String? = null
+            get() = field ?: ""
+        var compactHeader: String? = null
+            get() = field ?: ""
+        val body: String? = null
+            get() = field ?: ""
+        private val icon: String? = null
+        var links: Links? = null
+    }
+}

app/src/main/java/fr/free/nrw/commons/wikidata/model/page/GeoMarshaller.java

@@ -1,28 +0,0 @@
-package fr.free.nrw.commons.wikidata.model.page;
-
-import android.location.Location;
-
-import androidx.annotation.Nullable;
-
-import org.json.JSONException;
-import org.json.JSONObject;
-
-public final class GeoMarshaller {
-    @Nullable
-    public static String marshal(@Nullable Location object) {
-        if (object == null) {
-            return null;
-        }
-
-        JSONObject jsonObj = new JSONObject();
-        try {
-            jsonObj.put(GeoUnmarshaller.LATITUDE, object.getLatitude());
-            jsonObj.put(GeoUnmarshaller.LONGITUDE, object.getLongitude());
-        } catch (JSONException e) {
-            throw new RuntimeException(e);
-        }
-        return jsonObj.toString();
-    }
-
-    private GeoMarshaller() { }
-}