part of '../spotify.dart';

typedef PlaylistInput = ({
  String playlistName,
  bool? public,
  bool? collaborative,
  String? description,
  String? base64Image,
});

class PlaylistNotifier extends FamilyAsyncNotifier<Playlist, String> {
  @override
  FutureOr<Playlist> build(String arg) {
    final spotify = ref.watch(spotifyProvider);
    return spotify.playlists.get(arg);
  }

  Future<void> create(PlaylistInput input) async {
    if (state is AsyncData || state is AsyncLoading) return;
    state = const AsyncLoading();

    final spotify = ref.read(spotifyProvider);
    final me = ref.read(meProvider);

    if (me.value == null) return;

    state = await AsyncValue.guard(() async {
      final playlist = await spotify.playlists.createPlaylist(
        me.value!.id!,
        input.playlistName,
        collaborative: input.collaborative,
        description: input.description,
        public: input.public,
      );

      if (input.base64Image != null) {
        await spotify.playlists.updatePlaylistImage(
          playlist.id!,
          input.base64Image!,
        );
      }

      return playlist;
    });
  }

  Future<void> addTracks(List<String> trackIds) async {
    if (state.value == null) return;

    final spotify = ref.read(spotifyProvider);

    await spotify.playlists.addTracks(
      trackIds.map((id) => 'spotify:track:$id').toList(),
      state.value!.id!,
    );

    ref.refresh(playlistTracksProvider(state.value!.id!));
  }

  Future<void> modify(PlaylistInput input) async {
    if (state.value == null) return;

    final spotify = ref.read(spotifyProvider);

    await update((state) async {
      await spotify.playlists.updatePlaylist(
        state.id!,
        input.playlistName,
        collaborative: input.collaborative,
        description: input.description,
        public: input.public,
      );

      if (input.base64Image != null) {
        await spotify.playlists.updatePlaylistImage(
          state.id!,
          input.base64Image!,
        );
      }

      return spotify.playlists.get(state.id!);
    });
  }
}

final playlistProvider =
    AsyncNotifierProvider.family<PlaylistNotifier, String, PlaylistNotifier>(
  () => PlaylistNotifier(),
);