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melo-app/lib/models/song.dart
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class Song {
final int? id;
final String titel;
final String kuenstler;
final String album;
final int dauerSekunden;
final String dateiPfad;
final String? coverPfad;
final int groesseBytes;
final bool istHeruntergeladen;
final bool istKorrupt; // true wenn Datei defekt (Magic-Byte-Check, ffprobe, Playback-Fehler)
final String hinzugefuegtAm;
final String downloadQuelle; // "local", "youtube", "server"
final String? streamUrl; // Für Server-Streaming (Navidrome) wird bewusst NICHT in der DB persistiert (Auth-Token-Schutz)
int? zuletztPosition; // Sekunden, für Wiederaufnahme
Set<int>? tagIds; // Cache für Tag-Filterung (nicht in DB gespeichert)
Song({
this.id,
required this.titel,
required this.kuenstler,
this.album = '',
required this.dauerSekunden,
required this.dateiPfad,
this.coverPfad,
this.groesseBytes = 0,
this.istHeruntergeladen = false,
this.istKorrupt = false,
String? hinzugefuegtAm,
this.downloadQuelle = 'local',
this.streamUrl,
this.zuletztPosition,
}) : hinzugefuegtAm = hinzugefuegtAm ?? DateTime.now().toIso8601String();
Map<String, dynamic> toMap() => {
'id': id,
'titel': titel,
'kuenstler': kuenstler,
'album': album,
'dauer_sekunden': dauerSekunden,
'datei_pfad': dateiPfad,
'cover_pfad': coverPfad,
'groesse_bytes': groesseBytes,
'ist_heruntergeladen': istHeruntergeladen ? 1 : 0,
'ist_korrupt': istKorrupt ? 1 : 0,
'hinzugefuegt_am': hinzugefuegtAm,
'download_quelle': downloadQuelle,
'stream_url': null, // Token-haltige Stream-URLs nie persistieren (Sicherheit)
'zuletzt_position': zuletztPosition,
};
factory Song.fromMap(Map<String, dynamic> m) => Song(
id: m['id'] as int?,
titel: m['titel'] as String,
kuenstler: m['kuenstler'] as String,
album: m['album'] as String? ?? '',
dauerSekunden: m['dauer_sekunden'] as int,
dateiPfad: m['datei_pfad'] as String,
coverPfad: m['cover_pfad'] as String?,
groesseBytes: m['groesse_bytes'] as int? ?? 0,
istHeruntergeladen: (m['ist_heruntergeladen'] as int?) == 1,
istKorrupt: (m['ist_korrupt'] as int?) == 1,
hinzugefuegtAm: m['hinzugefuegt_am'] as String?,
downloadQuelle: m['download_quelle'] as String? ?? 'local',
streamUrl: m['stream_url'] as String?,
zuletztPosition: m['zuletzt_position'] as int?,
);
String get dauerFormatiert {
final min = dauerSekunden ~/ 60;
final sek = dauerSekunden % 60;
return '$min:${sek.toString().padLeft(2, '0')}';
}
String get groesseFormatiert {
if (groesseBytes < 1048576) return '${(groesseBytes / 1024).toStringAsFixed(0)} KB';
return '${(groesseBytes / 1048576).toStringAsFixed(1)} MB';
}
}