remove unused activity

Signed-off-by: alperozturk96 <alper_ozturk@proton.me>

Author: alperozturk96

app/src/main/java/com/nextcloud/client/player/media3/Media3PlaybackModel.kt

@@ -29,6 +29,7 @@ import com.nextcloud.client.player.model.file.PlaybackFiles
 import com.nextcloud.client.player.model.state.PlaybackState
 import com.nextcloud.client.player.model.state.RepeatMode
 import com.nextcloud.client.player.util.PeriodicAction
+import com.owncloud.android.datamodel.OCFile
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.SupervisorJob
@@ -209,6 +210,15 @@ class Media3PlaybackModel @Inject constructor(
         }
     }
 
+    override fun stopPlaying(file: OCFile) {
+        controller?.run {
+            val mediaItemIndex = indexOfFirst { it.mediaId == file.localId.toString() }
+            if (mediaItemIndex >= 0) {
+                release()
+            }
+        }
+    }
+
     private fun onPlaybackUpdate() {
         state.ifPresent(modelCompositeListener::onPlaybackUpdate)
     }

app/src/main/java/com/nextcloud/client/player/model/PlaybackModel.kt

@@ -12,6 +12,7 @@ import com.nextcloud.client.player.model.file.PlaybackFile
 import com.nextcloud.client.player.model.file.PlaybackFiles
 import com.nextcloud.client.player.model.state.PlaybackState
 import com.nextcloud.client.player.model.state.RepeatMode
+import com.owncloud.android.datamodel.OCFile
 import kotlinx.coroutines.flow.Flow
 import java.util.Optional
 
@@ -50,6 +51,8 @@ interface PlaybackModel {
 
     fun switchToFile(file: PlaybackFile)
 
+    fun stopPlaying(file: OCFile)
+
     interface Listener {
 
         fun onPlaybackUpdate(state: PlaybackState)

app/src/main/java/com/owncloud/android/ui/activity/FileDisplayActivity.kt

@@ -2106,7 +2106,7 @@ class FileDisplayActivity :
 
         if (result.isSuccess) {
             val removedFile = operation.file
-            tryStopPlaying(removedFile)
+            file?.let { playbackModel.stopPlaying(it) }
             val leftFragment = this.leftFragment
 
             // check if file is still available, if so do nothing
@@ -2167,10 +2167,6 @@ class FileDisplayActivity :
         }
     }
 
-    private fun tryStopPlaying(file: OCFile) {
-        // TODO: STOP PLAYER
-    }
-
     /**
      * Updates the view associated to the activity after the finish of an operation trying to move a file.
      *