fix: autoplay countdown continues although other video selected

app/src/main/java/com/github/libretube/services/AbstractPlayerService.kt

@@ -7,8 +7,10 @@ import android.os.Looper
 import android.view.KeyEvent
 import androidx.annotation.OptIn
 import androidx.core.app.ServiceCompat
+import androidx.core.os.bundleOf
 import androidx.core.os.postDelayed
 import androidx.media3.common.C
+import androidx.media3.common.MediaMetadata
 import androidx.media3.common.PlaybackException
 import androidx.media3.common.Player
 import androidx.media3.common.util.UnstableApi
@@ -22,6 +24,7 @@ import androidx.media3.session.SessionCommand
 import androidx.media3.session.SessionResult
 import com.github.libretube.R
 import com.github.libretube.api.obj.Subtitle
+import com.github.libretube.constants.IntentData
 import com.github.libretube.enums.PlayerCommand
 import com.github.libretube.enums.PlayerEvent
 import com.github.libretube.extensions.parcelable
@@ -47,6 +50,8 @@ abstract class AbstractPlayerService : MediaLibraryService(), MediaLibrarySessio
     var trackSelector: DefaultTrackSelector? = null
 
     lateinit var videoId: String
+        private set
+
     var isTransitioning = true
 
     val handler = Handler(Looper.getMainLooper())
@@ -170,7 +175,7 @@ abstract class AbstractPlayerService : MediaLibraryService(), MediaLibrarySessio
     }
 
     private fun navigateVideo(videoId: String) {
-        this.videoId = videoId
+        setVideoId(videoId)
 
         CoroutineScope(Dispatchers.IO).launch {
             startPlayback()
@@ -185,6 +190,28 @@ abstract class AbstractPlayerService : MediaLibraryService(), MediaLibrarySessio
         }
     }
 
+    /**
+     * Update the [videoId] to the new videoId and change the playlist metadata
+     * to reflect that videoId change
+     */
+    protected fun setVideoId(videoId: String) {
+        this.videoId = videoId
+
+        updatePlaylistMetadata {
+            setExtras(bundleOf(IntentData.videoId to videoId))
+        }
+    }
+
+    protected fun updatePlaylistMetadata(updateAction: MediaMetadata.Builder.() -> Unit) {
+        handler.post {
+            exoPlayer?.playlistMetadata = MediaMetadata.Builder()
+                .apply(updateAction)
+                // send a unique timestamp to notify that the metadata changed, even if playing the same video twice
+                .setTrackNumber(System.currentTimeMillis().mod(Int.MAX_VALUE))
+                .build()
+        }
+    }
+
     private fun handlePlayerAction(event: PlayerEvent) {
         if (PlayerHelper.handlePlayerAction(exoPlayer ?: return, event)) return
 
@@ -303,7 +330,7 @@ abstract class AbstractPlayerService : MediaLibraryService(), MediaLibrarySessio
      */
     abstract suspend fun startPlayback()
 
-    fun saveWatchPosition() {
+    private fun saveWatchPosition() {
         if (isTransitioning || !PlayerHelper.watchPositionsVideo) return
 
         exoPlayer?.let { PlayerHelper.saveWatchPosition(it, videoId) }

app/src/main/java/com/github/libretube/services/OfflinePlayerService.kt

@@ -56,13 +56,14 @@ open class OfflinePlayerService : AbstractPlayerService() {
         shuffle = args.getBoolean(IntentData.shuffle, false)
         noInternetService = args.getBoolean(IntentData.noInternet, false)
 
-        videoId = if (shuffle) {
+        val videoId = if (shuffle) {
             runBlocking(Dispatchers.IO) {
                 Database.downloadDao().getRandomVideoIdByFileType(FileType.AUDIO)
             }
         } else {
             args.getString(IntentData.videoId)
         } ?: return
+        setVideoId(videoId)
 
         PlayingQueue.clear()
 
@@ -131,9 +132,7 @@ open class OfflinePlayerService : AbstractPlayerService() {
     }
 
     private fun playNextVideo(videoId: String) {
-        saveWatchPosition()
-
-        this.videoId = videoId
+        setVideoId(videoId)
 
         scope.launch {
             startPlayback()

app/src/main/java/com/github/libretube/services/OnlinePlayerService.kt

@@ -6,7 +6,6 @@ import androidx.core.net.toUri
 import androidx.core.os.bundleOf
 import androidx.media3.common.MediaItem
 import androidx.media3.common.MediaItem.SubtitleConfiguration
-import androidx.media3.common.MediaMetadata
 import androidx.media3.common.MimeTypes
 import androidx.media3.common.Player
 import androidx.media3.datasource.cronet.CronetDataSource
@@ -106,7 +105,7 @@ open class OnlinePlayerService : AbstractPlayerService() {
         }
 
         // get the intent arguments
-        videoId = playerData.videoId
+        setVideoId(playerData.videoId)
         playlistId = playerData.playlistId
         channelId = playerData.channelId
         startTimestamp = playerData.timestamp
@@ -178,8 +177,6 @@ open class OnlinePlayerService : AbstractPlayerService() {
      * Plays the next video from the queue
      */
     private fun playNextVideo(nextId: String? = null) {
-        saveWatchPosition()
-
         if (nextId == null) {
             if (PlayingQueue.repeatMode == Player.REPEAT_MODE_ONE) {
                 exoPlayer?.seekTo(0)
@@ -192,7 +189,7 @@ open class OnlinePlayerService : AbstractPlayerService() {
         val nextVideo = nextId ?: PlayingQueue.getNext() ?: return
 
         // play new video on background
-        this.videoId = nextVideo
+        setVideoId(nextVideo)
         this.streams = null
         this.sponsorBlockSegments = emptyList()
 
@@ -214,9 +211,9 @@ open class OnlinePlayerService : AbstractPlayerService() {
             ).segments
 
             withContext(Dispatchers.Main) {
-                exoPlayer?.playlistMetadata = MediaMetadata.Builder()
-                    .setExtras(bundleOf(IntentData.segments to ArrayList(sponsorBlockSegments)))
-                    .build()
+                updatePlaylistMetadata {
+                    setExtras(bundleOf(IntentData.segments to ArrayList(sponsorBlockSegments)))
+                }
 
                 checkForSegments()
             }

app/src/main/java/com/github/libretube/ui/fragments/PlayerFragment.kt

@@ -305,16 +305,6 @@ class PlayerFragment : Fragment(), OnlinePlayerOptions {
         override fun onMediaMetadataChanged(mediaMetadata: MediaMetadata) {
             super.onMediaMetadataChanged(mediaMetadata)
 
-            mediaMetadata.extras?.getString(IntentData.videoId)?.let {
-                videoId = it
-                // fix: if the fragment is recreated, play the current video, and not the initial one
-                arguments?.run {
-                    val playerData =
-                        parcelable<PlayerData>(IntentData.playerData)!!.copy(videoId = videoId)
-                    putParcelable(IntentData.playerData, playerData)
-                }
-            }
-
             val maybeStreams: Streams? = mediaMetadata.extras?.parcelable(IntentData.streams)
             maybeStreams?.let { streams ->
                 this@PlayerFragment.streams = streams
@@ -327,6 +317,18 @@ class PlayerFragment : Fragment(), OnlinePlayerOptions {
         override fun onPlaylistMetadataChanged(mediaMetadata: MediaMetadata) {
             super.onPlaylistMetadataChanged(mediaMetadata)
 
+            mediaMetadata.extras?.getString(IntentData.videoId)?.let {
+                videoId = it
+                _binding?.autoplayCountdown?.cancelAndHideCountdown()
+
+                // fix: if the fragment is recreated, play the current video, and not the initial one
+                arguments?.run {
+                    val playerData =
+                        parcelable<PlayerData>(IntentData.playerData)!!.copy(videoId = videoId)
+                    putParcelable(IntentData.playerData, playerData)
+                }
+            }
+
             val segments: List<Segment>? = mediaMetadata.extras?.parcelableList(IntentData.segments)
             viewModel.segments.postValue(segments.orEmpty())
         }

app/src/main/java/com/github/libretube/ui/views/AutoplayCountdownView.kt

@@ -34,8 +34,7 @@ class AutoplayCountdownView(
 
     init {
         binding.cancel.setOnClickListener {
-            handler.removeCallbacksAndMessages(TIMER_RUNNABLE_TOKEN)
-            hideSelf.invoke()
+            cancelAndHideCountdown()
         }
     }
 
@@ -78,6 +77,11 @@ class AutoplayCountdownView(
         handler.postDelayed(1000, TIMER_RUNNABLE_TOKEN, this::updateCountdown)
     }
 
+    fun cancelAndHideCountdown() {
+        handler.removeCallbacksAndMessages(TIMER_RUNNABLE_TOKEN)
+        hideSelf.invoke()
+    }
+
     companion object {
         private const val COUNTDOWN_SECONDS = 5
         private const val TIMER_RUNNABLE_TOKEN = "timer_runnable"