mucke/lib/presentation/state/music_store.dart
2020-04-03 15:51:43 +02:00

72 lines
1.9 KiB
Dart

import 'package:dartz/dartz.dart';
import 'package:mobx/mobx.dart';
import '../../core/error/failures.dart';
import '../../domain/entities/album.dart';
import '../../domain/entities/song.dart';
import '../../domain/repositories/music_data_repository.dart';
import '../../domain/usecases/get_albums.dart';
import '../../domain/usecases/get_songs.dart';
import '../../domain/usecases/update_database.dart';
part 'music_store.g.dart';
class MusicStore extends _MusicStore with _$MusicStore {
MusicStore(MusicDataRepository musicDataRepository)
: super(musicDataRepository);
}
abstract class _MusicStore with Store {
_MusicStore(MusicDataRepository _musicDataRepository)
: _updateDatabase = UpdateDatabase(_musicDataRepository),
_getAlbums = GetAlbums(_musicDataRepository),
_getSongs = GetSongs(_musicDataRepository);
final UpdateDatabase _updateDatabase;
final GetAlbums _getAlbums;
final GetSongs _getSongs;
@observable
ObservableFuture<List<Album>> albumsFuture;
@observable
ObservableList<Song> songs = <Song>[].asObservable();
@observable
bool isFetchingSongs = false;
@observable
bool isUpdatingDatabase = false;
@action
Future<void> updateDatabase() async {
isUpdatingDatabase = true;
await _updateDatabase();
isUpdatingDatabase = false;
fetchAlbums();
fetchSongs();
}
@action
Future<void> fetchAlbums() async {
albumsFuture = ObservableFuture<List<Album>>(
_getAlbums().then(
(Either<Failure, List<Album>> either) => either.fold(
(_) => [],
(List<Album> a) => a,
),
),
);
}
@action
Future<void> fetchSongs() async {
isFetchingSongs = true;
final result = await _getSongs();
result.fold(
(_) => songs = <Song>[].asObservable(),
(songList) => songs = songList.asObservable(),
);
isFetchingSongs = false;
}
}