handle currently plaing and show title and creator

new-player/src/main/java/net/newpipe/newplayer/NewPlayer.kt

@@ -40,8 +40,8 @@ import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import net.newpipe.newplayer.playerInternals.PlaylistItem
+import net.newpipe.newplayer.playerInternals.fetchPlaylistItem
 import net.newpipe.newplayer.playerInternals.getPlaylistItemsFromExoplayer
-import net.newpipe.newplayer.utils.Thumbnail
 import kotlin.Exception
 import kotlin.random.Random
 
@@ -72,12 +72,12 @@ interface NewPlayer {
     val sharingLinkWithOffsetPossible: Boolean
     var currentPosition: Long
     var fastSeekAmountSec: Int
-    var playBackMode: PlayMode
+    val playBackMode: MutableStateFlow<PlayMode?>
-    var playMode: StateFlow<PlayMode?>
     var shuffle: Boolean
     var repeatMode: RepeatMode
 
     val playlist: StateFlow<List<PlaylistItem>>
+    val currentlyPlaying: StateFlow<PlaylistItem?>
 
     // callbacks
 
@@ -93,7 +93,6 @@ interface NewPlayer {
     fun removePlaylistItem(index: Int)
     fun playStream(item: String, playMode: PlayMode)
     fun playStream(item: String, streamVariant: String, playMode: PlayMode)
-    fun setPlayMode(playMode: PlayMode)
 
     data class Builder(val app: Application, val repository: MediaRepository) {
         private var mediaSourceFactory: MediaSource.Factory? = null
@@ -155,12 +154,10 @@ class NewPlayerImpl(
         }
 
     override var fastSeekAmountSec: Int = 10
-    override var playBackMode: PlayMode = PlayMode.EMBEDDED_VIDEO
 
     private var playerScope = CoroutineScope(Dispatchers.Main + Job())
 
-    var mutablePlayMode = MutableStateFlow<PlayMode?>(null)
+    override var playBackMode = MutableStateFlow<PlayMode?>(null)
-    override var playMode = mutablePlayMode.asStateFlow()
 
     override var shuffle: Boolean
         get() = internalPlayer.shuffleModeEnabled
@@ -183,7 +180,7 @@ class NewPlayerImpl(
             }
         }
 
-    var mutableOnEvent = MutableSharedFlow<Pair<Player, Player.Events>>()
+    private var mutableOnEvent = MutableSharedFlow<Pair<Player, Player.Events>>()
     override val onExoPlayerEvent: SharedFlow<Pair<Player, Player.Events>> =
         mutableOnEvent.asSharedFlow()
 
@@ -197,10 +194,13 @@ class NewPlayerImpl(
     override val duration: Long
         get() = internalPlayer.duration
 
-    val mutablePlaylist = MutableStateFlow<List<PlaylistItem>>(emptyList())
+    private val mutablePlaylist = MutableStateFlow<List<PlaylistItem>>(emptyList())
     override val playlist: StateFlow<List<PlaylistItem>> =
         mutablePlaylist.asStateFlow()
 
+    private val mutableCurrentlyPlaying = MutableStateFlow<PlaylistItem?>(null)
+    override val currentlyPlaying: StateFlow<PlaylistItem?> = mutableCurrentlyPlaying.asStateFlow()
+
     init {
         println("gurken init")
         internalPlayer.addListener(object : Player.Listener {
@@ -227,12 +227,37 @@ class NewPlayerImpl(
                 super.onTimelineChanged(timeline, reason)
                 updatePlaylistItems()
             }
+
+            override fun onMediaItemTransition(mediaItem: MediaItem?, reason: Int) {
+                super.onMediaItemTransition(mediaItem, reason)
+                mediaItem?.let {
+                    val playlistItem = getPlaylistItem(mediaItem.mediaId.toLong())
+                    if (playlistItem != null) {
+                        mutableCurrentlyPlaying.update {
+                            playlistItem
+                        }
+                    } else {
+                        launchJobAndCollectError {
+                            val item = fetchPlaylistItem(
+                                uniqueId = mediaItem.mediaId.toLong(),
+                                mediaRepo = repository,
+                                idLookupTable = uniqueIdToIdLookup
+                            )
+                            mutableCurrentlyPlaying.update { item }
+                        }
+                    }
+
+
+                }
+
+            }
         })
     }
 
     private fun updatePlaylistItems() {
         playerScope.launch {
-            val playlist = getPlaylistItemsFromExoplayer(internalPlayer, repository, uniqueIdToIdLookup)
+            val playlist =
+                getPlaylistItemsFromExoplayer(internalPlayer, repository, uniqueIdToIdLookup)
             var playlistDuration = 0
             for (item in playlist) {
                 playlistDuration += item.lengthInS
@@ -244,6 +269,15 @@ class NewPlayerImpl(
         }
     }
 
+    private fun getPlaylistItem(uniqueId: Long): PlaylistItem? {
+        for (item in playlist.value) {
+            if (item.uniqueId == uniqueId) {
+                return item
+            }
+        }
+        return null
+    }
+
     override fun prepare() {
         internalPlayer.prepare()
     }
@@ -289,15 +323,12 @@ class NewPlayerImpl(
         }
     }
 
-    override fun setPlayMode(playMode: PlayMode) {
-        this.mutablePlayMode.update { playMode }
-    }
 
     private fun internalPlayStream(mediaItem: MediaItem, playMode: PlayMode) {
         if (internalPlayer.playbackState == Player.STATE_IDLE) {
             internalPlayer.prepare()
         }
-        this.mutablePlayMode.update { playMode }
+        this.playBackMode.update { playMode }
         this.internalPlayer.setMediaItem(mediaItem)
         this.internalPlayer.play()
     }
@@ -305,7 +336,7 @@ class NewPlayerImpl(
     private suspend fun toMediaItem(item: String, streamVariant: String): MediaItem {
         val dataStream = repository.getStream(item, streamVariant)
         val uniqueId = Random.nextLong()
-        uniqueIdToIdLookup.set(uniqueId, item)
+        uniqueIdToIdLookup[uniqueId] = item
         val mediaItem = MediaItem.Builder().setMediaId(uniqueId.toString()).setUri(dataStream)
         return mediaItem.build()
     }

new-player/src/main/java/net/newpipe/newplayer/model/VideoPlayerUIState.kt

@@ -20,7 +20,6 @@
 
 package net.newpipe.newplayer.model
 
-import androidx.media3.common.Player
 import net.newpipe.newplayer.Chapter
 import net.newpipe.newplayer.RepeatMode
 import net.newpipe.newplayer.playerInternals.PlaylistItem
@@ -45,14 +44,12 @@ data class VideoPlayerUIState(
     val chapters: List<Chapter>,
     val shuffleEnabled: Boolean,
     val repeatMode: RepeatMode,
-    val playListDurationInS: Int
+    val playListDurationInS: Int,
+    val currentlyPlaying: PlaylistItem
 ) {
     companion object {
         val DEFAULT = VideoPlayerUIState(
-            // TODO: replace this with the placeholder state.
-            // The actual initial state upon starting to play is dictated by the NewPlayer instance
             uiMode = UIModeState.PLACEHOLDER,
-            //uiMode = UIModeState.PLACEHOLDER,
             playing = false,
             contentRatio = 16 / 9f,
             embeddedUiRatio = 16f / 9f,
@@ -70,7 +67,24 @@ data class VideoPlayerUIState(
             chapters = emptyList(),
             shuffleEnabled = false,
             repeatMode = RepeatMode.DONT_REPEAT,
-            playListDurationInS = 0
+            playListDurationInS = 0,
+            currentlyPlaying = PlaylistItem.DEFAULT
+        )
+
+        val DUMMY = DEFAULT.copy(
+            uiMode = UIModeState.EMBEDDED_VIDEO,
+            playing = true,
+            seekerPosition = 0.3f,
+            bufferedPercentage = 0.5f,
+            isLoading = false,
+            durationInMs = 420,
+            playbackPositionInMs = 69,
+            fastSeekSeconds = 10,
+            soundVolume = 0.5f,
+            brightness = 0.2f,
+            shuffleEnabled = true,
+            playListDurationInS = 5493,
+            currentlyPlaying = PlaylistItem.DUMMY
         )
     }
 }

new-player/src/main/java/net/newpipe/newplayer/model/VideoPlayerViewModel.kt

@@ -67,4 +67,5 @@ interface VideoPlayerViewModel {
     fun movePlaylistItem(from: Int, to: Int)
     fun removePlaylistItem(index: Int)
     fun onStreamItemDragFinished()
+    fun dialogVisible(visible: Boolean)
 }

new-player/src/main/java/net/newpipe/newplayer/model/VideoPlayerViewModelImpl.kt

@@ -40,12 +40,14 @@ import kotlinx.coroutines.flow.SharedFlow
 import kotlinx.coroutines.flow.asSharedFlow
 import javax.inject.Inject
 import kotlinx.coroutines.flow.asStateFlow
+import kotlinx.coroutines.flow.collect
 import kotlinx.coroutines.flow.update
 import kotlinx.coroutines.launch
 import net.newpipe.newplayer.Chapter
 import net.newpipe.newplayer.utils.VideoSize
 import net.newpipe.newplayer.NewPlayer
 import net.newpipe.newplayer.RepeatMode
+import net.newpipe.newplayer.playerInternals.PlaylistItem
 import net.newpipe.newplayer.ui.ContentScale
 import java.util.LinkedList
 
@@ -179,7 +181,7 @@ class VideoPlayerViewModelImpl @Inject constructor(
         }
         newPlayer?.let { newPlayer ->
             viewModelScope.launch {
-                newPlayer.playMode.collect { newMode ->
+                newPlayer.playBackMode.collect { newMode ->
                     val currentMode = mutableUiState.value.uiMode.toPlayMode()
                     if (currentMode != newMode) {
                         mutableUiState.update {
@@ -196,6 +198,13 @@ class VideoPlayerViewModelImpl @Inject constructor(
                     mutableUiState.update { it.copy(playList = playlist) }
                 }
             }
+            viewModelScope.launch {
+                newPlayer.currentlyPlaying.collect { playlistItem ->
+                    mutableUiState.update {
+                        it.copy(currentlyPlaying = playlistItem ?: PlaylistItem.DEFAULT)
+                    }
+                }
+            }
         }
     }
 
@@ -467,6 +476,14 @@ class VideoPlayerViewModelImpl @Inject constructor(
         playlistItemToBeMoved = null
     }
 
+    override fun dialogVisible(visible: Boolean) {
+        if(visible) {
+            uiVisibilityJob?.cancel()
+        } else {
+            resetHideUiDelayedJob()
+        }
+    }
+
     override fun removePlaylistItem(index: Int) {
         newPlayer?.removePlaylistItem(index)
     }
@@ -476,7 +493,9 @@ class VideoPlayerViewModelImpl @Inject constructor(
         val newPlayMode = newState.toPlayMode()
         val currentPlayMode = mutableUiState.value.uiMode.toPlayMode()
         if (newPlayMode != currentPlayMode) {
-            newPlayer?.setPlayMode(newPlayMode!!)
+            newPlayer?.playBackMode?.update {
+                newPlayMode!!
+            }
         } else {
             mutableUiState.update {
                 it.copy(uiMode = newState)

new-player/src/main/java/net/newpipe/newplayer/model/ViewoPlayerViewModelDummy.kt

@@ -116,6 +116,10 @@ open class VideoPlayerViewModelDummy : VideoPlayerViewModel {
         println("dummy impl")
     }
 
+    override fun dialogVisible(visible: Boolean) {
+        println("dummy impl dialog visible: $visible")
+    }
+
     override fun pause() {
         println("dummy pause")
     }

new-player/src/main/java/net/newpipe/newplayer/playerInternals/PlayListItem.kt

@@ -21,6 +21,7 @@
 
 package net.newpipe.newplayer.playerInternals
 
+import androidx.media3.common.MediaItem
 import androidx.media3.common.Player
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.async
@@ -37,12 +38,55 @@ data class PlaylistItem(
     val uniqueId: Long,
     val thumbnail: Thumbnail?,
     val lengthInS: Int
+) {
+    companion object {
+        val DEFAULT = PlaylistItem(
+            title = "",
+            creator = "",
+            id = "",
+            uniqueId = -1L,
+            thumbnail = null,
+            lengthInS = 0
         )
 
-suspend fun getPlaylistItemsFromExoplayer(player: Player, mediaRepo: MediaRepository, idLookupTable: HashMap<Long, String>) =
+        val DUMMY = PlaylistItem(
+            title = "Superawesome Video",
+            creator = "Yours truely",
+            id = "some_id",
+            uniqueId = 12345L,
+            thumbnail = null,
+            lengthInS = 420
+        )
+    }
+}
+
+suspend fun fetchPlaylistItem(
+    uniqueId: Long,
+    mediaRepo: MediaRepository,
+    idLookupTable: HashMap<Long, String>
+) : PlaylistItem {
+    val id = idLookupTable[uniqueId]
+        ?: throw NewPlayerException("Unknown uniqueId: $uniqueId, uniqueId Id mapping error. Something went wrong during datafetching.")
+    val metaInfo = mediaRepo.getMetaInfo(id)
+
+    return PlaylistItem(
+        title = metaInfo.title,
+        creator = metaInfo.channelName,
+        id = id,
+        thumbnail = metaInfo.thumbnail,
+        lengthInS = metaInfo.lengthInS,
+        uniqueId = uniqueId
+    )
+}
+
+
+suspend fun getPlaylistItemsFromExoplayer(
+    player: Player,
+    mediaRepo: MediaRepository,
+    idLookupTable: HashMap<Long, String>
+) =
     with(CoroutineScope(coroutineContext)) {
         (0..player.mediaItemCount - 1).map { index ->
-            println("gurken index: $index")
             val mediaItem = player.getMediaItemAt(index)
             val uniqueId = mediaItem.mediaId.toLong()
             val id = idLookupTable.get(uniqueId)

new-player/src/main/java/net/newpipe/newplayer/ui/videoplayer/BottomUI.kt

@@ -126,7 +126,7 @@ fun VideoPlayerControllerBottomUIPreview() {
             BottomUI(
                 modifier = Modifier,
                 viewModel = VideoPlayerViewModelDummy(),
-                uiState = VideoPlayerUIState.DEFAULT.copy(
+                uiState = VideoPlayerUIState.DUMMY.copy(
                     uiMode = UIModeState.FULLSCREEN_VIDEO_CONTROLLER_UI,
                     seekerPosition = 0.4f,
                     durationInMs = 90 * 60 * 1000,

new-player/src/main/java/net/newpipe/newplayer/ui/videoplayer/CenterUI.kt

@@ -122,7 +122,7 @@ fun VideoPlayerControllerUICenterUIPreview() {
         Surface(color = Color.Black) {
             CenterUI(
                 viewModel = VideoPlayerViewModelDummy(),
-                uiState = VideoPlayerUIState.DEFAULT.copy(
+                uiState = VideoPlayerUIState.DUMMY.copy(
                     isLoading = false,
                     playing = true
                 )

new-player/src/main/java/net/newpipe/newplayer/ui/videoplayer/Menu.kt

@@ -52,13 +52,16 @@ import androidx.compose.ui.tooling.preview.Preview
 import androidx.compose.ui.unit.DpOffset
 import androidx.compose.ui.unit.dp
 import net.newpipe.newplayer.R
+import net.newpipe.newplayer.model.VideoPlayerUIState
+import net.newpipe.newplayer.model.VideoPlayerViewModel
+import net.newpipe.newplayer.model.VideoPlayerViewModelDummy
 import net.newpipe.newplayer.ui.theme.VideoPlayerTheme
 
 @Composable
-fun DropDownMenu() {
+fun DropDownMenu(viewModel: VideoPlayerViewModel, uiState: VideoPlayerUIState) {
     var showMainMenu: Boolean by remember { mutableStateOf(false) }
 
-    var pixel_density = LocalDensity.current
+    val pixel_density = LocalDensity.current
 
     var offsetY by remember {
         mutableStateOf(0.dp)
@@ -141,7 +144,7 @@ fun DropDownMenu() {
 fun VideoPlayerControllerDropDownPreview() {
     VideoPlayerTheme {
         Box(Modifier.fillMaxSize()) {
-            DropDownMenu()
+            DropDownMenu(VideoPlayerViewModelDummy(), VideoPlayerUIState.DUMMY)
         }
     }
 }

new-player/src/main/java/net/newpipe/newplayer/ui/videoplayer/StreamSelectUI.kt

@@ -201,7 +201,7 @@ fun VideoPlayerStreamSelectUIPreview() {
             StreamSelectUI(
                 isChapterSelect = false,
                 viewModel = VideoPlayerViewModelDummy(),
-                uiState = VideoPlayerUIState.DEFAULT.copy(
+                uiState = VideoPlayerUIState.DUMMY.copy(
                     playList = arrayListOf(
                         PlaylistItem(
                             id = "6502",

new-player/src/main/java/net/newpipe/newplayer/ui/videoplayer/TopUI.kt

@@ -51,6 +51,7 @@ import net.newpipe.newplayer.R
 import net.newpipe.newplayer.model.VideoPlayerUIState
 import net.newpipe.newplayer.model.VideoPlayerViewModel
 import net.newpipe.newplayer.model.VideoPlayerViewModelDummy
+import net.newpipe.newplayer.playerInternals.PlaylistItem
 import net.newpipe.newplayer.ui.theme.VideoPlayerTheme
 import net.newpipe.newplayer.ui.theme.video_player_onSurface
 import net.newpipe.newplayer.utils.getEmbeddedUiConfig
@@ -67,14 +68,17 @@ fun TopUI(
     ) {
         Column(horizontalAlignment = Alignment.Start, modifier = Modifier.weight(1F)) {
             Text(
-                "The Title",
+                uiState.currentlyPlaying.title,
                 fontSize = 15.sp,
                 fontWeight = FontWeight.Bold,
                 maxLines = 1,
                 overflow = TextOverflow.Ellipsis
             )
             Text(
-                "The Channel", fontSize = 12.sp, maxLines = 1, overflow = TextOverflow.Ellipsis
+                uiState.currentlyPlaying.creator,
+                fontSize = 12.sp,
+                maxLines = 1,
+                overflow = TextOverflow.Ellipsis
             )
         }
         Button(
@@ -105,9 +109,14 @@ fun TopUI(
                 )
             }
         }
-        androidx.compose.animation.AnimatedVisibility(visible = 1 < uiState.playList.size) {
+        AnimatedVisibility(visible = 1 < uiState.playList.size) {
             IconButton(
-                onClick = { viewModel.openStreamSelection(selectChapter = false, embeddedUiConfig) },
+                onClick = {
+                    viewModel.openStreamSelection(
+                        selectChapter = false,
+                        embeddedUiConfig
+                    )
+                },
             ) {
                 Icon(
                     imageVector = Icons.AutoMirrored.Filled.List,
@@ -115,7 +124,7 @@ fun TopUI(
                 )
             }
         }
-        DropDownMenu()
+        DropDownMenu(viewModel, uiState)
     }
 }
 
@@ -128,7 +137,9 @@ fun TopUI(
 fun VideoPlayerControllerTopUIPreview() {
     VideoPlayerTheme {
         Surface(color = Color.Black) {
-            TopUI(modifier = Modifier, VideoPlayerViewModelDummy(), VideoPlayerUIState.DEFAULT)
+            TopUI(
+                modifier = Modifier, VideoPlayerViewModelDummy(), VideoPlayerUIState.DUMMY
+            )
         }
     }
 }