fix: cached currently playing track infinite loading

lib/provider/proxy_playlist/proxy_playlist_provider.dart

@@ -15,6 +15,7 @@ import 'package:spotube/provider/proxy_playlist/proxy_playlist.dart';
 import 'package:spotube/provider/user_preferences_provider.dart';
 import 'package:spotube/services/audio_player/audio_player.dart';
 import 'package:spotube/services/audio_services/audio_services.dart';
+import 'package:spotube/services/youtube.dart';
 import 'package:spotube/utils/persisted_state_notifier.dart';
 import 'package:spotube/utils/type_conversion_utils.dart';
 
@@ -215,12 +216,15 @@ class ProxyPlaylistNotifier extends PersistedStateNotifier<ProxyPlaylist>
     int initialIndex = 0,
     bool autoPlay = false,
   }) async {
+    try {
       tracks = blacklist.filter(tracks).toList() as List<Track>;
       final addableTrack = await SpotubeTrack.fetchFromTrack(
         tracks.elementAt(initialIndex),
         preferences,
       );
 
+      print('addableTrack: $addableTrack');
+
       state = state.copyWith(
         tracks: mergeTracks([addableTrack], tracks),
         active: initialIndex,
@@ -238,6 +242,9 @@ class ProxyPlaylistNotifier extends PersistedStateNotifier<ProxyPlaylist>
         tracks.elementAt(initialIndex),
         addableTrack,
       );
+    } catch (e) {
+      print('Error: $e');
+    }
   }
 
   Future<void> jumpTo(int index) async {
@@ -404,15 +411,17 @@ class ProxyPlaylistNotifier extends PersistedStateNotifier<ProxyPlaylist>
   }
 
   @override
-  onInit() {
+  onInit() async {
     if (state.tracks.isEmpty) return null;
 
-    return load(
+    if (await PipedSpotube.initialized) {
+      await load(
         state.tracks,
         initialIndex: state.active ?? 0,
         autoPlay: false,
       );
     }
+  }
 
   @override
   FutureOr<ProxyPlaylist> fromJson(Map<String, dynamic> json) {

lib/services/youtube.dart

@@ -1,8 +1,13 @@
+import 'dart:async';
+
 import 'package:piped_client/piped_client.dart';
 
 PipedClient _defaultClient = PipedClient();
 
 class PipedSpotube {
+  static final Completer<bool> _initialized = Completer();
+  static Future<bool> get initialized => _initialized.future;
+
   /// Checks for a working instance of piped.video
   ///
   /// To distribute the load, in each startup it randomizes public instances
@@ -15,6 +20,7 @@ class PipedSpotube {
       try {
         await client.streams("dQw4w9WgXcQ");
         _defaultClient = client;
+        _initialized.complete(true);
         break;
       } catch (e) {
         continue;