♻️ Better current track metadata

lib/providers/audio_provider.dart

@@ -1,4 +1,5 @@
 import 'package:groovybox/logic/audio_handler.dart';
+import 'package:groovybox/logic/metadata_service.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 part 'audio_provider.g.dart';
@@ -15,3 +16,19 @@ AudioHandler audioHandler(Ref ref) {
 void setAudioHandler(AudioHandler handler) {
   _audioHandler = handler;
 }
+
+@Riverpod(keepAlive: true)
+class CurrentTrackMetadataNotifier extends _$CurrentTrackMetadataNotifier {
+  @override
+  TrackMetadata? build() {
+    return null;
+  }
+
+  void setMetadata(TrackMetadata metadata) {
+    state = metadata;
+  }
+
+  void clear() {
+    state = null;
+  }
+}

lib/providers/audio_provider.g.dart

@@ -49,3 +49,58 @@ final class AudioHandlerProvider
 }
 
 String _$audioHandlerHash() => r'65fbd92e049fe4f3a0763516f1e68e1614f7630f';
+
+@ProviderFor(CurrentTrackMetadataNotifier)
+const currentTrackMetadataProvider = CurrentTrackMetadataNotifierProvider._();
+
+final class CurrentTrackMetadataNotifierProvider
+    extends $NotifierProvider<CurrentTrackMetadataNotifier, TrackMetadata?> {
+  const CurrentTrackMetadataNotifierProvider._()
+    : super(
+        from: null,
+        argument: null,
+        retry: null,
+        name: r'currentTrackMetadataProvider',
+        isAutoDispose: false,
+        dependencies: null,
+        $allTransitiveDependencies: null,
+      );
+
+  @override
+  String debugGetCreateSourceHash() => _$currentTrackMetadataNotifierHash();
+
+  @$internal
+  @override
+  CurrentTrackMetadataNotifier create() => CurrentTrackMetadataNotifier();
+
+  /// {@macro riverpod.override_with_value}
+  Override overrideWithValue(TrackMetadata? value) {
+    return $ProviderOverride(
+      origin: this,
+      providerOverride: $SyncValueProvider<TrackMetadata?>(value),
+    );
+  }
+}
+
+String _$currentTrackMetadataNotifierHash() =>
+    r'0a491bd4edda2b010ed3d6f7dd459f4ac8689a5f';
+
+abstract class _$CurrentTrackMetadataNotifier
+    extends $Notifier<TrackMetadata?> {
+  TrackMetadata? build();
+  @$mustCallSuper
+  @override
+  void runBuild() {
+    final created = build();
+    final ref = this.ref as $Ref<TrackMetadata?, TrackMetadata?>;
+    final element =
+        ref.element
+            as $ClassProviderElement<
+              AnyNotifier<TrackMetadata?, TrackMetadata?>,
+              TrackMetadata?,
+              Object?,
+              Object?
+            >;
+    element.handleValue(ref, created);
+  }
+}