Various fixes to screensaver, subtitle order, & playlist modifications (#1104)

## Description
Several small tweaks:

- Always put screensaver logo on left instead of random
- Disable playback speed option if audio is being passed through
- When opening playback settings such as speed or scale, focus on the
current value instead of top of the list; doesn't apply to subtitles so
it's easy to toggle them off
- If the user has a preferred subtitle language, show tracks in that
language first/top
- Add toast message after creating or adding to a playlist

### Related issues
Playback speed audio pass through: #164 

### Testing
Emulator & shield

## Screenshots
N/A

## AI or LLM usage
None

app/src/main/java/com/github/damontecres/wholphin/ui/components/AppScreensaver.kt

@@ -135,7 +135,6 @@ fun AppScreensaverContent(
         )
 
         var logoError by remember(currentItem) { mutableStateOf(false) }
-        val alignment = listOf(Alignment.BottomStart, Alignment.BottomEnd).random()
         if (!logoError) {
             AsyncImage(
                 model =
@@ -150,7 +149,7 @@ fun AppScreensaverContent(
                 },
                 modifier =
                     Modifier
-                        .align(alignment)
+                        .align(Alignment.BottomStart)
                         .size(width = 240.dp, height = 120.dp)
                         .padding(16.dp),
             )
@@ -158,7 +157,7 @@ fun AppScreensaverContent(
             Box(
                 modifier =
                     Modifier
-                        .align(alignment)
+                        .align(Alignment.BottomStart)
                         .padding(16.dp)
                         .fillMaxWidth(.5f)
                         .fillMaxHeight(.3f),
@@ -169,7 +168,7 @@ fun AppScreensaverContent(
                     style = MaterialTheme.typography.displaySmall,
                     maxLines = 2,
                     overflow = TextOverflow.Ellipsis,
-                    modifier = Modifier.align(alignment),
+                    modifier = Modifier.align(Alignment.BottomStart),
                 )
             }
         }

app/src/main/java/com/github/damontecres/wholphin/ui/components/Dialogs.kt

@@ -632,6 +632,7 @@ fun chooseStream(
     streams: List<MediaStream>,
     currentIndex: Int?,
     type: MediaStreamType,
+    preferredSubtitleLanguage: String?,
     onClick: (Int) -> Unit,
 ): DialogParams =
     DialogParams(
@@ -669,7 +670,15 @@ fun chooseStream(
                     )
                 }
                 addAll(
-                    streams.filter { it.type == type }.mapIndexed { index, stream ->
+                    streams
+                        .filter { it.type == type }
+                        .let {
+                            if (type == MediaStreamType.SUBTITLE && preferredSubtitleLanguage.isNotNullOrBlank()) {
+                                it.sortedByDescending { it.language != null && it.language == preferredSubtitleLanguage }
+                            } else {
+                                it
+                            }
+                        }.mapIndexed { index, stream ->
                             val simpleStream = SimpleMediaStream.from(context, stream, true)
                             DialogItem(
                                 selected = currentIndex == stream.index,
@@ -677,7 +686,9 @@ fun chooseStream(
                                     SelectedLeadingContent(currentIndex == stream.index)
                                 },
                                 headlineContent = {
-                                Text(text = simpleStream.streamTitle ?: simpleStream.displayTitle)
+                                    Text(
+                                        text = simpleStream.streamTitle ?: simpleStream.displayTitle,
+                                    )
                                 },
                                 supportingContent = {
                                     if (simpleStream.streamTitle != null) Text(text = simpleStream.displayTitle)

app/src/main/java/com/github/damontecres/wholphin/ui/data/AddPlaylistViewModel.kt

@@ -5,6 +5,7 @@ import android.widget.Toast
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
+import com.github.damontecres.wholphin.R
 import com.github.damontecres.wholphin.services.PlaylistCreator
 import com.github.damontecres.wholphin.ui.detail.PlaylistLoadingState
 import com.github.damontecres.wholphin.ui.launchIO
@@ -14,6 +15,7 @@ import com.github.damontecres.wholphin.util.ExceptionHandler
 import dagger.hilt.android.lifecycle.HiltViewModel
 import dagger.hilt.android.qualifiers.ApplicationContext
 import org.jellyfin.sdk.model.api.MediaType
+import timber.log.Timber
 import java.util.UUID
 import javax.inject.Inject
 
@@ -43,7 +45,13 @@ class AddPlaylistViewModel
             itemId: UUID,
         ) {
             viewModelScope.launchIO(ExceptionHandler(autoToast = true)) {
+                try {
                     playlistCreator.addToServerPlaylist(playlistId, itemId)
+                    showToast(context, context.getString(R.string.success), Toast.LENGTH_SHORT)
+                } catch (ex: Exception) {
+                    Timber.e(ex, "Error adding %s to playlist %s", itemId, playlistId)
+                    showToast(context, "Error: ${ex.localizedMessage}", Toast.LENGTH_SHORT)
+                }
             }
         }
 
@@ -55,6 +63,8 @@ class AddPlaylistViewModel
                 val playlistId = playlistCreator.createServerPlaylist(playlistName, listOf(itemId))
                 if (playlistId == null) {
                     showToast(context, "Error creating playlist", Toast.LENGTH_LONG)
+                } else {
+                    showToast(context, context.getString(R.string.success), Toast.LENGTH_SHORT)
                 }
             }
         }

app/src/main/java/com/github/damontecres/wholphin/ui/detail/episode/EpisodeDetails.kt

@@ -86,6 +86,13 @@ fun EpisodeDetails(
     var showDeleteDialog by remember { mutableStateOf<BaseItem?>(null) }
     val playlistState by playlistViewModel.playlistState.observeAsState(PlaylistLoadingState.Pending)
 
+    val preferredSubtitleLanguage =
+        viewModel.serverRepository.currentUserDto
+            .observeAsState()
+            .value
+            ?.configuration
+            ?.subtitleLanguagePreference
+
     val moreActions =
         MoreDialogActions(
             navigateTo = viewModel::navigateTo,
@@ -200,6 +207,7 @@ fun EpisodeDetails(
                                                                     type,
                                                                 )
                                                             },
+                                                            preferredSubtitleLanguage = preferredSubtitleLanguage,
                                                         )
                                                 }
                                         },

app/src/main/java/com/github/damontecres/wholphin/ui/detail/movie/MovieDetails.kt

@@ -114,6 +114,13 @@ fun MovieDetails(
     val playlistState by playlistViewModel.playlistState.observeAsState(PlaylistLoadingState.Pending)
     var showDeleteDialog by remember { mutableStateOf<BaseItem?>(null) }
 
+    val preferredSubtitleLanguage =
+        viewModel.serverRepository.currentUserDto
+            .observeAsState()
+            .value
+            ?.configuration
+            ?.subtitleLanguagePreference
+
     val moreActions =
         MoreDialogActions(
             navigateTo = viewModel::navigateTo,
@@ -246,6 +253,7 @@ fun MovieDetails(
                                                                     type,
                                                                 )
                                                             },
+                                                            preferredSubtitleLanguage = preferredSubtitleLanguage,
                                                         )
                                                 }
                                         },

app/src/main/java/com/github/damontecres/wholphin/ui/detail/series/SeriesOverview.kt

@@ -138,6 +138,13 @@ fun SeriesOverview(
     }
     val chosenStreams by viewModel.chosenStreams.observeAsState(null)
 
+    val preferredSubtitleLanguage =
+        viewModel.serverRepository.currentUserDto
+            .observeAsState()
+            .value
+            ?.configuration
+            ?.subtitleLanguagePreference
+
     when (val state = loading) {
         is LoadingState.Error -> {
             ErrorMessage(state, modifier)
@@ -252,6 +259,7 @@ fun SeriesOverview(
                                                             type,
                                                         )
                                                     },
+                                                    preferredSubtitleLanguage = preferredSubtitleLanguage,
                                                 )
                                         }
                                 },

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackControls.kt

@@ -8,7 +8,6 @@ import androidx.annotation.OptIn
 import androidx.compose.foundation.background
 import androidx.compose.foundation.focusGroup
 import androidx.compose.foundation.interaction.MutableInteractionSource
-import androidx.compose.foundation.interaction.collectIsFocusedAsState
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
@@ -24,7 +23,6 @@ import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.relocation.BringIntoViewRequester
 import androidx.compose.foundation.relocation.bringIntoViewRequester
-import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.ExperimentalMaterial3Api
 import androidx.compose.runtime.Composable
@@ -37,7 +35,6 @@ import androidx.compose.runtime.rememberCoroutineScope
 import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.draw.clip
 import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.focus.onFocusChanged
@@ -64,6 +61,7 @@ import com.github.damontecres.wholphin.ui.PreviewTvSpec
 import com.github.damontecres.wholphin.ui.components.Button
 import com.github.damontecres.wholphin.ui.components.SelectedLeadingContent
 import com.github.damontecres.wholphin.ui.components.TextButton
+import com.github.damontecres.wholphin.ui.indexOfFirstOrNull
 import com.github.damontecres.wholphin.ui.seekBack
 import com.github.damontecres.wholphin.ui.seekForward
 import com.github.damontecres.wholphin.ui.skipStringRes
@@ -470,6 +468,14 @@ fun <T> BottomDialog(
     gravity: Int,
     currentChoice: BottomDialogItem<T>? = null,
 ) {
+    val focusRequesters = remember(choices.size) { List(choices.size) { FocusRequester() } }
+    if (currentChoice != null) {
+        LaunchedEffect(Unit) {
+            choices.indexOfFirstOrNull { it == currentChoice }?.let {
+                focusRequesters.getOrNull(it)?.tryRequestFocus()
+            }
+        }
+    }
     // TODO enforcing a width ends up ignore the gravity
     Dialog(
         onDismissRequest = onDismissRequest,
@@ -504,6 +510,7 @@ fun <T> BottomDialog(
                     val interactionSource = remember { MutableInteractionSource() }
                     ListItem(
                         selected = choice == currentChoice,
+                        enabled = choice.enabled,
                         onClick = {
                             onDismissRequest()
                             onSelectChoice(index, choice)
@@ -524,6 +531,7 @@ fun <T> BottomDialog(
                             }
                         },
                         interactionSource = interactionSource,
+                        modifier = Modifier.focusRequester(focusRequesters[index]),
                     )
                 }
             }
@@ -539,6 +547,7 @@ data class BottomDialogItem<T>(
     val data: T,
     val headline: String,
     val supporting: String?,
+    val enabled: Boolean = true,
 )
 
 @PreviewTvSpec

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackDialog.kt

@@ -14,9 +14,12 @@ import androidx.compose.foundation.lazy.itemsIndexed
 import androidx.compose.foundation.shape.RoundedCornerShape
 import androidx.compose.material3.HorizontalDivider
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.remember
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
+import androidx.compose.ui.focus.FocusRequester
+import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.layout.ContentScale
 import androidx.compose.ui.platform.LocalView
 import androidx.compose.ui.res.stringResource
@@ -32,6 +35,8 @@ import com.github.damontecres.wholphin.R
 import com.github.damontecres.wholphin.data.model.TrackIndex
 import com.github.damontecres.wholphin.ui.AppColors
 import com.github.damontecres.wholphin.ui.components.SelectedLeadingContent
+import com.github.damontecres.wholphin.ui.indexOfFirstOrNull
+import com.github.damontecres.wholphin.ui.tryRequestFocus
 import kotlin.time.Duration
 
 enum class PlaybackDialogType {
@@ -54,6 +59,7 @@ data class PlaybackSettings(
     val contentScale: ContentScale,
     val subtitleDelay: Duration,
     val hasSubtitleDownloadPermission: Boolean,
+    val playbackSpeedEnabled: Boolean,
 )
 
 @Composable
@@ -137,6 +143,7 @@ fun PlaybackDialog(
                             data = PlaybackDialogType.PLAYBACK_SPEED,
                             headline = stringResource(R.string.playback_speed),
                             supporting = settings.playbackSpeed.toString(),
+                            enabled = settings.playbackSpeedEnabled,
                         ),
                     )
                     if (enableVideoScale) {
@@ -395,6 +402,14 @@ fun StreamChoiceBottomDialog(
     gravity: Int,
     currentChoice: Int? = null,
 ) {
+    val focusRequesters = remember(choices.size) { List(choices.size) { FocusRequester() } }
+    if (currentChoice != null) {
+        LaunchedEffect(Unit) {
+            choices.indexOfFirstOrNull { it.index == currentChoice }?.let {
+                focusRequesters.getOrNull(it)?.tryRequestFocus()
+            }
+        }
+    }
     // TODO enforcing a width ends up ignore the gravity
     Dialog(
         onDismissRequest = onDismissRequest,
@@ -445,6 +460,7 @@ fun StreamChoiceBottomDialog(
                             if (choice.streamTitle != null) Text(choice.displayTitle)
                         },
                         interactionSource = interactionSource,
+                        modifier = Modifier.focusRequester(focusRequesters[index]),
                     )
                 }
             }

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackPage.kt

@@ -596,6 +596,9 @@ fun PlaybackPageContent(
                     subtitleDelay = subtitleDelay,
                     hasSubtitleDownloadPermission =
                         remember(userDto) { userDto?.policy?.let { it.isAdministrator || it.enableSubtitleManagement } == true },
+                    // TODO Passing through audio prevents changing playback speed
+                    // See https://github.com/damontecres/Wholphin/issues/164
+                    playbackSpeedEnabled = playerBackend == PlayerBackend.MPV || currentPlayback?.audioDecoder != null,
                 ),
             onDismissRequest = {
                 playbackDialog = null

app/src/main/java/com/github/damontecres/wholphin/ui/playback/PlaybackViewModel.kt

@@ -446,11 +446,20 @@ class PlaybackViewModel
 
                 // Create the correct player for the media
                 createPlayer(videoStream?.hdr == true, videoStream?.is4k == true)
-
+                val subtitleLanguagePreference =
+                    serverRepository.currentUserDto.value
+                        ?.configuration
+                        ?.subtitleLanguagePreference
                 val subtitleStreams =
                     mediaSource.mediaStreams
                         ?.filter { it.type == MediaStreamType.SUBTITLE }
-                        ?.map {
+                        .let {
+                            if (subtitleLanguagePreference.isNotNullOrBlank()) {
+                                it?.sortedByDescending { it.language != null && subtitleLanguagePreference == it.language }
+                            } else {
+                                it
+                            }
+                        }?.map {
                             SimpleMediaStream.from(context, it, true)
                         }.orEmpty()