Changed to data classes, and added immutability (#5905)

Co-authored-by: Jinniu Du <127721018+Donutcheese@users.noreply.github.com>

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

@@ -1,104 +1,45 @@
 package fr.free.nrw.commons.profile.achievements
 
 /**
- * Represents Achievements class and stores all the parameters
+ * Represents Achievements data class and stores all the parameters.
+ * Immutable version with default values for optional properties.
  */
-class Achievements {
+data class Achievements(
+    val uniqueUsedImages: Int = 0,
+    val articlesUsingImages: Int = 0,
+    val thanksReceived: Int = 0,
+    val featuredImages: Int = 0,
+    val qualityImages: Int = 0,
+    val imagesUploaded: Int = 0,
+    val revertCount: Int = 0
+) {
     /**
-     * The count of unique images used by the wiki.
-     * @return The count of unique images used.
-     * @param uniqueUsedImages The count to set for unique images used.
-     */
-    var uniqueUsedImages = 0
-    private var articlesUsingImages = 0
-
-    /**
-     * The count of thanks received.
-     * @return The count of thanks received.
-     * @param thanksReceived The count to set for thanks received.
-     */
-    var thanksReceived = 0
-
-    /**
-     * The count of featured images.
-     * @return The count of featured images.
-     * @param featuredImages The count to set for featured images.
-     */
-    var featuredImages = 0
-
-    /**
-     * The count of quality images.
-     * @return The count of quality images.
-     * @param qualityImages The count to set for quality images.
-     */
-    var qualityImages = 0
-
-    /**
-     * The count of images uploaded.
-     * @return The count of images uploaded.
-     * @param imagesUploaded The count to set for images uploaded.
-     */
-    var imagesUploaded = 0
-    private var revertCount = 0
-
-    constructor() {}
-
-    /**
-     * constructor for achievements class to set its data members
-     * @param uniqueUsedImages
-     * @param articlesUsingImages
-     * @param thanksReceived
-     * @param featuredImages
-     * @param imagesUploaded
-     * @param revertCount
-     */
-    constructor(
-        uniqueUsedImages: Int,
-        articlesUsingImages: Int,
-        thanksReceived: Int,
-        featuredImages: Int,
-        qualityImages: Int,
-        imagesUploaded: Int,
-        revertCount: Int,
-    ) {
-        this.uniqueUsedImages = uniqueUsedImages
-        this.articlesUsingImages = articlesUsingImages
-        this.thanksReceived = thanksReceived
-        this.featuredImages = featuredImages
-        this.qualityImages = qualityImages
-        this.imagesUploaded = imagesUploaded
-        this.revertCount = revertCount
-    }
-
-    /**
-     * used to calculate the percentages of images that haven't been reverted
-     * @return
+     * Used to calculate the percentages of images that haven't been reverted.
+     * Returns 100 if imagesUploaded is 0 to avoid division by zero.
      */
     val notRevertPercentage: Int
-        get() =
-            try {
+        get() = if (imagesUploaded > 0) {
             (imagesUploaded - revertCount) * 100 / imagesUploaded
-            } catch (divideByZero: ArithmeticException) {
+        } else {
             100
         }
 
     companion object {
         /**
-         * Get Achievements object from FeedbackResponse
+         * Get Achievements object from FeedbackResponse.
          *
-         * @param response
-         * @return
+         * @param response The feedback response to convert.
+         * @return An Achievements object with values from the response.
          */
         @JvmStatic
-        fun from(response: FeedbackResponse): Achievements =
-            Achievements(
-                response.uniqueUsedImages,
-                response.articlesUsingImages,
-                response.thanksReceived,
-                response.featuredImages.featuredPicturesOnWikimediaCommons,
-                response.featuredImages.qualityImages,
-                0,
-                response.deletedUploads,
+        fun from(response: FeedbackResponse): Achievements = Achievements(
+            uniqueUsedImages = response.uniqueUsedImages,
+            articlesUsingImages = response.articlesUsingImages,
+            thanksReceived = response.thanksReceived,
+            featuredImages = response.featuredImages.featuredPicturesOnWikimediaCommons,
+            qualityImages = response.featuredImages.qualityImages,
+            imagesUploaded = 0,  // Assuming imagesUploaded should be 0
+            revertCount = response.deletedUploads
         )
     }
 }

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

@@ -295,8 +295,18 @@ public class AchievementsFragment extends CommonsDaggerSupportFragment {
      * @param uploadCount
      */
     private void setAchievementsUploadCount(Achievements achievements, int uploadCount) {
-        achievements.setImagesUploaded(uploadCount);
-        hideProgressBar(achievements);
+        // 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);
     }
 
     /**

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

@@ -6,7 +6,7 @@ import com.google.gson.annotations.SerializedName
  * Represents Featured Images on WikiMedia Commons platform
  * Used by Achievements and FeedbackResponse (objects) of the user
  */
-class FeaturedImages(
+data class FeaturedImages(
     @field:SerializedName("Quality_images") val qualityImages: Int,
     @field:SerializedName("Featured_pictures_on_Wikimedia_Commons") val featuredPicturesOnWikimediaCommons: Int,
 )