Initial commit

2026-07-23 14:31:28 +02:00
commit 94a4063070
152 changed files with 8500 additions and 0 deletions
@@ -0,0 +1,54 @@
+import '../database/db_helper.dart';
+import '../models/song.dart';
+
+class FavoritenService {
+  static final FavoritenService _instanz = FavoritenService._();
+  factory FavoritenService() => _instanz;
+  FavoritenService._();
+
+  final DbHelper _db = DbHelper();
+  int? _favoritenPlaylistId;
+
+  int? get favoritenId => _favoritenPlaylistId;
+
+  Future<void> init() async {
+    final playlists = await _db.allePlaylists();
+    final vorhanden = playlists.where((p) => p['name'] == '⭐ Favoriten').toList();
+    if (vorhanden.isNotEmpty) {
+      _favoritenPlaylistId = vorhanden.first['id'] as int;
+    } else {
+      _favoritenPlaylistId = await _db.playlistErstellen('⭐ Favoriten');
+    }
+  }
+
+  Future<bool> istFavorit(int songId) async {
+    if (_favoritenPlaylistId == null) return false;
+    final songs = await _db.songsDerPlaylist(_favoritenPlaylistId!);
+    return songs.any((s) => s.id == songId);
+  }
+
+  Future<void> umschalten(int songId) async {
+    if (_favoritenPlaylistId == null) return;
+    if (await istFavorit(songId)) {
+      await _db.songAusPlaylistEntfernen(_favoritenPlaylistId!, songId);
+    } else {
+      final songs = await _db.songsDerPlaylist(_favoritenPlaylistId!);
+      await _db.songZurPlaylist(_favoritenPlaylistId!, songId, songs.length);
+    }
+  }
+
+  Future<List<Song>> alleFavoriten() async {
+    if (_favoritenPlaylistId == null) return [];
+    return _db.songsDerPlaylist(_favoritenPlaylistId!);
+  }
+
+  Future<Set<int>> favoritenIds() async {
+    if (_favoritenPlaylistId == null) return {};
+    final d = await _db.db;
+    final rows = await d.rawQuery(
+      'SELECT song_id FROM playlist_songs WHERE playlist_id = ?',
+      [_favoritenPlaylistId],
+    );
+    return rows.map((r) => r['song_id'] as int).toSet();
+  }
+}