Fix restore queueSource

Make queueSource responsive
Fix some warnings

lib/api/player/audio_handler.dart

@@ -1,6 +1,5 @@
 import 'package:audio_service/audio_service.dart';
 import 'package:audio_session/audio_session.dart';
-import 'package:flutter/foundation.dart';
 import 'package:freezer/api/cache.dart';
 import 'package:freezer/api/deezer.dart';
 import 'package:freezer/api/audio_sources/deezer_audio_source.dart';
@@ -802,6 +801,13 @@ class AudioPlayerTask extends BaseAudioHandler {
     _queueAutoIncrement = q.length;
     queue.add(q);
     await _loadQueue(preload: false);
+
+    //Send restored queue source to ui
+    customEvent.add({
+      'action': 'onRestore',
+      'queueSource': queueSource!,
+      'repeatMode': _repeatMode
+    });
   }
 
   @override

lib/api/player/player_helper.dart

@@ -15,7 +15,6 @@ class PlayerHelper {
   late StreamSubscription _customEventSubscription;
   late StreamSubscription _mediaItemSubscription;
   late StreamSubscription _playbackStateStreamSubscription;
-  QueueSource? queueSource;
   AudioServiceRepeatMode repeatType = AudioServiceRepeatMode.none;
   bool equalizerOpen = false;
   bool _shuffleEnabled = false;
@@ -30,6 +29,9 @@ class PlayerHelper {
   // StreamController _visualizerController = StreamController.broadcast();
   // Stream get visualizerStream => _visualizerController.stream;
 
+  final _queueSourceSubject = BehaviorSubject<QueueSource>();
+  ValueStream<QueueSource> get queueSource => _queueSourceSubject.stream;
+
   final _streamInfoSubject = BehaviorSubject<StreamQualityInfo>();
   ValueStream<StreamQualityInfo> get streamInfo => _streamInfoSubject.stream;
 
@@ -92,7 +94,7 @@ class PlayerHelper {
       switch (event['action']) {
         case 'onRestore':
           //Load queueSource from isolate
-          queueSource = event['queueSource'] as QueueSource;
+          _queueSourceSubject.add(event['queueSource'] as QueueSource);
           repeatType = event['repeatMode'] as AudioServiceRepeatMode;
           _queueIndex = getQueueIndex();
           break;
@@ -202,7 +204,7 @@ class PlayerHelper {
 
   //Play mix by track
   Future playMix(String trackId, String trackTitle) async {
-    List<Track> tracks = (await deezerAPI.playMix(trackId))!;
+    List<Track> tracks = await deezerAPI.playMix(trackId);
     await playFromTrackList(
         tracks,
         tracks[0].id,
@@ -277,7 +279,7 @@ class PlayerHelper {
   Future<void> playFromTrackList(
       List<Track> tracks, String? trackId, QueueSource queueSource) async {
     final queue =
-        tracks.map<MediaItem>((track) => track!.toMediaItem()).toList();
+        tracks.map<MediaItem>((track) => track.toMediaItem()).toList();
     await setQueueSource(queueSource);
     await _loadQueuePlay(
         queue, trackId == null ? 0 : queue.indexWhere((m) => m.id == trackId));
@@ -311,7 +313,7 @@ class PlayerHelper {
   }
 
   Future setQueueSource(QueueSource queueSource) async {
-    this.queueSource = queueSource;
+    _queueSourceSubject.add(queueSource);
     await audioHandler.customAction('queueSource', queueSource.toJson());
   }
 

lib/ui/library.dart

@@ -536,7 +536,7 @@ class _LibraryTracksState extends State<LibraryTracks> {
                     ),
                     const SizedBox(height: 8.0),
                     for (final track in allTracks)
-                      TrackTile.fromTrack(track!, onTap: () {
+                      TrackTile.fromTrack(track, onTap: () {
                         playerHelper.playFromTrackList(
                             allTracks,
                             track.id,

lib/ui/player_screen.dart

@@ -787,11 +787,15 @@ class PlaybackControls extends StatelessWidget {
   Widget build(BuildContext context) {
     return Padding(
       padding: const EdgeInsets.symmetric(horizontal: 8.0),
-      child: Row(
+      child: StreamBuilder<QueueSource>(
+          stream: playerHelper.queueSource,
+          builder: (context, snapshot) {
+            final queueSource = snapshot.data;
+            return Row(
               mainAxisAlignment: MainAxisAlignment.spaceBetween,
               mainAxisSize: MainAxisSize.max,
               children: [
-          playerHelper.queueSource?.source != 'show'
+                queueSource?.source != 'show'
                     ? ShuffleButton(iconSize: size * 0.75)
                     : const ForwardReplay30Button(forward: false),
                 PrevNextButton(size, prev: true),
@@ -817,11 +821,12 @@ class PlaybackControls extends StatelessWidget {
                 else
                   PlayPauseButton(size * 1.25),
                 PrevNextButton(size),
-          playerHelper.queueSource?.source != 'show'
+                queueSource?.source != 'show'
                     ? RepeatButton(size * 0.75)
                     : const ForwardReplay30Button(forward: true),
               ],
-      ),
+            );
+          }),
     );
   }
 }
@@ -997,9 +1002,15 @@ class PlayerScreenTopRow extends StatelessWidget {
           iconSize: size,
           splashRadius: size * 1.5,
         ),
-        if (playerHelper.queueSource != null)
         Expanded(
-            child: RichText(
+          child: StreamBuilder<QueueSource>(
+              stream: playerHelper.queueSource,
+              builder: (context, snapshot) {
+                final queueSource = snapshot.data;
+                if (queueSource == null) {
+                  return const SizedBox.shrink();
+                }
+                return RichText(
                     textAlign: TextAlign.center,
                     maxLines: 2,
                     text: TextSpan(children: [
@@ -1010,8 +1021,9 @@ class PlayerScreenTopRow extends StatelessWidget {
                                 fontWeight: FontWeight.bold,
                                 letterSpacing: 1.5,
                                 fontSize: (textSize ?? 38.sp) * 0.85)),
-                  TextSpan(text: playerHelper.queueSource!.text ?? '')
+                      TextSpan(text: queueSource.text ?? '')
-                ], style: TextStyle(fontSize: textSize ?? 38.sp))),
+                    ], style: TextStyle(fontSize: textSize ?? 38.sp)));
+              }),
         ),
         showQueueButton
             ? IconButton(
@@ -1158,7 +1170,7 @@ class BottomBarControls extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     final iconSize = size * 0.9;
-    if (playerHelper.queueSource?.source == 'show') {
+    if (playerHelper.queueSource.valueOrNull?.source == 'show') {
       return Row(
         crossAxisAlignment: CrossAxisAlignment.center,
         mainAxisAlignment: MainAxisAlignment.spaceEvenly,