ui.dart

@riverpod
class EditMovie extends _$EditMovie {
  @override
  AsyncValue<Movie?> build() => const AsyncValue.data(null);

  void setMovie(Movie movie) {
    state = AsyncValue.data(movie);
  }
  
  Future<void> saveChanges(Movie updatedMovie) async {
    if (state.value == null) return;
    
    state = const AsyncValue.loading();
    try {
      await ref.read(movieNotifierProvider.notifier)
          .updateMovie(updatedMovie.id, updatedMovie.toJson());
      state = AsyncValue.data(updatedMovie);
    } catch (e, st) {
      state = AsyncValue.error(e, st);
    }
  }
}