feat(notification): allow custom intent for notifications

Update `NotificationSys` to support passing a custom `Intent` when
showing notifications. This enables more flexible navigation, such as
opening a web URL for update notifications.

In `PlayerFragment`, use this new capability to trigger a browser
intent for update notifications on non-Android TV devices.

app/src/main/java/com/michatec/radio/NotificationSys.kt

@@ -28,18 +28,18 @@ object NotificationSys {
         }
     }
 
-    fun showNotification(context: Context, title: String, content: String) {
+    fun showNotification(context: Context, title: String, content: String, intent: Intent? = null) {
         val notificationManager = context.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
         createNotificationChannel(context)
 
-        val intent = Intent(context, MainActivity::class.java).apply {
+        val targetIntent = intent ?: Intent(context, MainActivity::class.java).apply {
             flags = Intent.FLAG_ACTIVITY_CLEAR_TOP or Intent.FLAG_ACTIVITY_SINGLE_TOP
         }
 
         val pendingIntent = PendingIntent.getActivity(
             context, 
             0, 
-            intent, 
+            targetIntent, 
             PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
         )
 
@@ -55,9 +55,9 @@ object NotificationSys {
         notificationManager.notify(NOTIFICATION_ID, notification)
     }
 
-    fun showNotification(context: Context, titleResId: Int, contentResId: Int) {
+    fun showNotification(context: Context, titleResId: Int, contentResId: Int, intent: Intent? = null) {
         val title = context.getString(titleResId)
         val content = context.getString(contentResId)
-        showNotification(context, title, content)
+        showNotification(context, title, content, intent)
     }
 }

app/src/main/java/com/michatec/radio/PlayerFragment.kt

@@ -96,6 +96,11 @@ class PlayerFragment : Fragment(),
     private var tempStationUuid: String = String()
     private var itemTouchHelper: ItemTouchHelper? = null
 
+    // Check if the device running the app is an Android TV instance
+    private val isAndroidTV: Boolean by lazy {
+        context?.packageManager?.hasSystemFeature(PackageManager.FEATURE_LEANBACK) == true
+    }
+
 
     /* Overrides onCreate from Fragment */
     override fun onCreate(savedInstanceState: Bundle?) {
@@ -850,6 +855,22 @@ class PlayerFragment : Fragment(),
                                 R.color.default_neutral_white))
                         .show()
                 }
+
+                if (!isAndroidTV) {
+                    val releaseUrl = getString(R.string.snackbar_url_app_home_page)
+    
+                    // Create the clean browser intent that will trigger ONLY when the notification is tapped
+                    val updateIntent = Intent(Intent.ACTION_VIEW, Uri.parse(releaseUrl)).apply {
+                        putExtra("SOURCE", "SELF")
+                    }
+
+                    NotificationSys.showNotification(
+                        requireContext(),
+                        "${getString(R.string.app_name)} $latestVersion",
+                        getString(R.string.snackbar_update_available),
+                        intent = updateIntent
+                    )
+                }
             }
         }, { error ->
             Log.w(TAG, "Update check failed", error)