fix BigAlbumArt desync

fix wakelock

lib/api/player/player_helper.dart

@@ -15,14 +15,13 @@ import 'package:rxdart/rxdart.dart';
 AudioPlayerTask get audioHandler => GetIt.instance<AudioPlayerTask>();
 
 class PlayerHelper {
-  late StreamSubscription _customEventSubscription;
-  late StreamSubscription _mediaItemSubscription;
-  late StreamSubscription _playbackStateStreamSubscription;
+  StreamSubscription? _customEventSubscription;
+  StreamSubscription? _mediaItemSubscription;
+  StreamSubscription? _playbackStateStreamSubscription;
   AudioServiceRepeatMode repeatType = AudioServiceRepeatMode.none;
   bool equalizerOpen = false;
   bool _shuffleEnabled = false;
   int _queueIndex = 0;
-  bool _started = false;
 
   /// Whether this system supports the [Connectivity] plugin or not
   bool _isConnectivityPluginAvailable = true;
@@ -95,10 +94,8 @@ class PlayerHelper {
   }
 
   Future<void> start() async {
-    if (_started) return;
-    _started = true;
     //Subscribe to custom events
-    _customEventSubscription = audioHandler.customEvent.listen((event) async {
+    _customEventSubscription ??= audioHandler.customEvent.listen((event) async {
       if (event is! Map) return;
       Logger('PlayerHelper').fine("event received: ${event['action']}");
       switch (event['action']) {
@@ -124,7 +121,7 @@ class PlayerHelper {
           break;
       }
     });
-    _mediaItemSubscription = audioHandler.mediaItem.listen((mediaItem) async {
+    _mediaItemSubscription ??= audioHandler.mediaItem.listen((mediaItem) async {
       if (mediaItem == null) return;
       _queueIndex = getQueueIndex();
       //Load more flow if last song (not using .last since it iterates through previous elements first)
@@ -138,7 +135,7 @@ class PlayerHelper {
       cache.history.add(Track.fromMediaItem(mediaItem));
       cache.save();
     });
-    _playbackStateStreamSubscription =
+    _playbackStateStreamSubscription ??=
         audioHandler.playbackState.listen((playbackState) {
       if (!_processingStateSubject.hasValue ||
           _processingStateSubject.value != playbackState.processingState) {
@@ -188,11 +185,17 @@ class PlayerHelper {
   }
 
   //Executed before exit
-  Future stop() async {
-    _customEventSubscription.cancel();
-    _playbackStateStreamSubscription.cancel();
-    _mediaItemSubscription.cancel();
-    _started = false;
+  void stop() {
+    pause();
+    _mediaItemSubscription?.cancel();
+    _mediaItemSubscription = null;
+  }
+
+  void pause() {
+    _customEventSubscription?.cancel();
+    _playbackStateStreamSubscription?.cancel();
+
+    _customEventSubscription = _playbackStateStreamSubscription = null;
   }
 
   //Replace queue, play specified track id

lib/main.dart

@@ -172,7 +172,7 @@ class _FreezerAppState extends State<FreezerApp> with WidgetsBindingObserver {
   void didChangeAppLifecycleState(AppLifecycleState state) {
     switch (state) {
       case AppLifecycleState.paused:
-        playerHelper.stop();
+        playerHelper.pause();
         break;
       case AppLifecycleState.resumed:
         playerHelper.start();

lib/ui/player_screen.dart

@@ -909,6 +909,10 @@ class _BigAlbumArtState extends State<BigAlbumArt> with WidgetsBindingObserver {
   void _listenForMediaItemChanges() {
     if (_currentItemSub != null) return;
 
+    if (audioHandler.mediaItem.hasValue) {
+      _pageController.jumpToPage(playerHelper.queueIndex);
+    }
+
     _currentItemSub = audioHandler.mediaItem.listen((event) async {
       if (_initiatedByUser) {
         _initiatedByUser = false;
@@ -950,9 +954,10 @@ class _BigAlbumArtState extends State<BigAlbumArt> with WidgetsBindingObserver {
     super.dispose();
   }
 
-  void _pushLyrics() async {
+  void _pushLyrics() {
     // enable wakelock if not already enabled
-    final wakelockChanged = !(await WakelockPlus.enabled);
+    // ideally we would use WakelockPlus.enabled
+    final wakelockChanged = !cache.wakelock;
     if (wakelockChanged) {
       WakelockPlus.enable();
     }

lib/ui/search.dart

@@ -294,8 +294,8 @@ class _SearchScreenState extends State<SearchScreen> {
                         ),
                         ...List.generate(min(cache.searchHistory.length, 10),
                             (int i) {
-                          switch (cache
-                              .searchHistory[cache.searchHistory.length - i]) {
+                          switch (cache.searchHistory[
+                              cache.searchHistory.length - i - 1]) {
                             case final Track data:
                               return TrackTile.fromTrack(
                                 data,