feat : Account Vanishing (#6098)

* feat : Account Vanishing

* Added Comment for SingleWebViewActivity

---------

Co-authored-by: Nicolas Raoul <nicolas.raoul@gmail.com>

app/src/main/java/fr/free/nrw/commons/activity/SingleWebViewActivity.kt

@@ -0,0 +1,181 @@
+package fr.free.nrw.commons.activity
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.content.Intent
+import android.os.Bundle
+import android.webkit.ConsoleMessage
+import android.webkit.WebChromeClient
+import android.webkit.WebResourceRequest
+import android.webkit.WebView
+import android.webkit.WebViewClient
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material3.ExperimentalMaterial3Api
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.material3.TopAppBar
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.viewinterop.AndroidView
+import fr.free.nrw.commons.R
+import timber.log.Timber
+
+/**
+ * SingleWebViewActivity is a reusable activity webView based on a given url(initial url) and
+ * closes itself when a specified success URL is reached to success url.
+ */
+class SingleWebViewActivity : ComponentActivity() {
+    @OptIn(ExperimentalMaterial3Api::class)
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        val url = intent.getStringExtra(VANISH_ACCOUNT_URL)
+        val successUrl = intent.getStringExtra(VANISH_ACCOUNT_SUCCESS_URL)
+        if (url == null || successUrl == null) {
+            finish()
+            return
+        }
+        enableEdgeToEdge()
+        setContent {
+            Scaffold(
+                topBar = {
+                    TopAppBar(
+                        modifier = Modifier,
+                        title = { Text(getString(R.string.vanish_account)) },
+                        navigationIcon = {
+                            IconButton(
+                                onClick = {
+                                    // Close the WebView Activity if the user taps the back button
+                                    finish()
+                                },
+                            ) {
+                                Icon(
+                                    imageVector = Icons.AutoMirrored.Filled.ArrowBack,
+                                    // TODO("Add contentDescription)
+                                    contentDescription = ""
+                                )
+                            }
+                        }
+                    )
+                },
+                content = {
+                    WebViewComponent(
+                        url = url,
+                        successUrl = successUrl,
+                        onSuccess = {
+                            // TODO Redirect the user to login screen like we do when the user logout's
+                            finish()
+                        },
+                        modifier = Modifier
+                            .fillMaxSize()
+                            .padding(it)
+                    )
+                }
+            )
+        }
+    }
+
+
+    /**
+     * @param url The initial URL which we are loading in the WebView.
+     * @param successUrl The URL that, when reached, triggers the `onSuccess` callback.
+     * @param onSuccess A callback that is invoked when the current url of webView is successUrl.
+     * This is used when we want to close when the webView once a success url is hit.
+     * @param modifier An optional [Modifier] to customize the layout or appearance of the WebView.
+     */
+    @SuppressLint("SetJavaScriptEnabled")
+    @Composable
+    private fun WebViewComponent(
+        url: String,
+        successUrl: String,
+        onSuccess: () -> Unit,
+        modifier: Modifier = Modifier
+    ) {
+        val webView = remember { mutableStateOf<WebView?>(null) }
+        AndroidView(
+            modifier = modifier,
+            factory = {
+                WebView(it).apply {
+                    settings.apply {
+                        javaScriptEnabled = true
+                        domStorageEnabled = true
+                        javaScriptCanOpenWindowsAutomatically = true
+
+                    }
+                    webViewClient = object : WebViewClient() {
+                        override fun shouldOverrideUrlLoading(
+                            view: WebView?,
+                            request: WebResourceRequest?
+                        ): Boolean {
+
+                            request?.url?.let { url ->
+                                Timber.d("URL Loading: $url")
+                                if (url.toString() == successUrl) {
+                                    Timber.d("Success URL detected. Closing WebView.")
+                                    onSuccess() // Close the activity
+                                    return true
+                                }
+                                return false
+                            }
+                            return false
+                        }
+
+                        override fun onPageFinished(view: WebView?, url: String?) {
+                            super.onPageFinished(view, url)
+                        }
+
+                    }
+
+                    webChromeClient = object : WebChromeClient() {
+                        override fun onConsoleMessage(message: ConsoleMessage): Boolean {
+                            Timber.d("Console: ${message.message()} -- From line ${message.lineNumber()} of ${message.sourceId()}")
+                            return true
+                        }
+                    }
+
+                    loadUrl(url)
+                }
+            },
+            update = {
+                webView.value = it
+            }
+        )
+
+    }
+
+    companion object {
+        private const val VANISH_ACCOUNT_URL = "VanishAccountUrl"
+        private const val VANISH_ACCOUNT_SUCCESS_URL = "vanishAccountSuccessUrl"
+
+        /**
+         * Launch the WebViewActivity with the specified URL and success URL.
+         * @param context The context from which the activity is launched.
+         * @param url The initial URL to load in the WebView.
+         * @param successUrl The URL that triggers the WebView to close when matched.
+         */
+        fun showWebView(
+            context: Context,
+            url: String,
+            successUrl: String
+        ) {
+            val intent = Intent(
+                context,
+                SingleWebViewActivity::class.java
+            ).apply {
+                putExtra(VANISH_ACCOUNT_URL, url)
+                putExtra(VANISH_ACCOUNT_SUCCESS_URL, successUrl)
+            }
+            context.startActivity(intent)
+        }
+    }
+}
+