mucke/lib/system/datasources/music_data_source_contract.dart

import '../models/album_model.dart';
import '../models/artist_model.dart';
import '../models/song_model.dart';

abstract class MusicDataSource {
  Future<List<AlbumModel>> getAlbums();

  /// Insert album into the database. Return the ID of the inserted album.
  Future<int> insertAlbum(AlbumModel albumModel);

  Future<List<SongModel>> getSongs();
  Future<List<SongModel>> getSongsFromAlbum(AlbumModel album);
  Future<void> insertSong(SongModel songModel);


  Future<SongModel> getSongByPath(String path);

  Future<void> deleteAllArtists();
  Future<int> insertArtist(ArtistModel artistModel);

  Future<void> deleteAllAlbums();
  Future<void> deleteAllSongs();

  Future<List<ArtistModel>> getArtists();
}