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melo-app/lib/main.dart
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Dustin 6ed416c8b1 v2.37 — Issue #6: Auto-Scan beim Start + Timer.periodic alle 3h
- MusikScanner().scanneMusikOrdner() wird direkt nach Auth-Init aufgerufen
- Timer.periodic alle 3 Stunden für periodischen Scan
- androidStopForegroundOnPause=false für persistente Notification (Issue #8)
Build: ✓ flutter analyze
2026-08-02 15:56:13 +02:00

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import 'dart:async';
import 'package:flutter/material.dart';
import 'dart:io' show Platform;
import 'package:audio_service/audio_service.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:permission_handler/permission_handler.dart';
import 'database/db_helper.dart';
import 'services/favoriten_service.dart';
import 'services/auth_service.dart';
import 'services/cloud_service.dart';
import 'services/melo_logger.dart';
import 'services/audio_handler.dart';
import 'services/musik_scanner.dart';
import 'utils/farb_theme.dart';
import 'screens/home_screen.dart';
import 'screens/login_screen.dart';
void main() async {
WidgetsFlutterBinding.ensureInitialized();
// Logger startet sofort zeichnet ALLES auf
MeloLogger().init('2.35');
try {
await DbHelper().db;
await FavoritenService().init();
// Hintergrund-Audio-Service starten
await AudioService.init(
builder: () => MeloAudioHandler(),
config: const AudioServiceConfig(
androidNotificationChannelId: 'de.baka.melo.audio',
androidNotificationChannelName: 'Melo Wiedergabe',
androidStopForegroundOnPause: false,
),
);
MeloLogger().zustand('start_ok', {'db': 'ok', 'audio': 'ok'});
} catch (e, stack) {
MeloLogger().fehler('App-Start', e, stack);
}
// Auth initialisieren (Token aus SharedPreferences laden + online validieren)
await AuthService().initialisieren();
// Android-Berechtigungen beim Start abfragen (Issue #4)
// Speicherzugriff für Musik-Scan (READ_MEDIA_AUDIO / Storage)
await MusikScanner().frageSpeicherZugriff();
// Auto-Scan: Musikordner beim Start scannen + periodisch alle 3h (Issue #6)
_starteAutoScan();
// POST_NOTIFICATIONS für Android 13+ (Notifications für Downloads, Player)
if (Platform.isAndroid) {
await Permission.notification.request();
}
// Auto-Sync beim Start (wenn eingeloggt und Auto-Sync aktiv)
_starteAutoSyncFallsNoetig();
runApp(const MeloApp());
}
/// Führt Musik-Scan beim Start aus + Timer.periodic alle 3 Stunden (Issue #6)
void _starteAutoScan() {
// Sofort beim Start scannen (asynchron, blockiert nicht)
MusikScanner().scanneMusikOrdner().then((songs) {
MeloLogger().zustand('auto_scan_start', {'gefunden': songs.length});
}).catchError((e) {
MeloLogger().fehler('auto_scan_start', e);
});
// Periodischer Scan alle 3 Stunden
Timer.periodic(const Duration(hours: 3), (_) {
MusikScanner().scanneMusikOrdner().then((songs) {
MeloLogger().zustand('auto_scan_periodisch', {'gefunden': songs.length});
}).catchError((e) {
MeloLogger().fehler('auto_scan_periodisch', e);
});
});
}
/// Führt Cloud-Auto-Sync beim App-Start aus, falls konfiguriert
Future<void> _starteAutoSyncFallsNoetig() async {
try {
final auth = AuthService();
if (!auth.istEingeloggt) return;
// Prüfen, ob Auto-Sync aktiviert ist
final SharedPreferences prefs =
await SharedPreferences.getInstance();
final autoSync = prefs.getBool('cloud_auto') ?? true;
if (!autoSync) return;
final cloud = CloudService();
final ok = await cloud.login(auth.benutzer);
if (!ok) return;
// Letzten Sync prüfen — nur syncen wenn nötig
final lastSync = prefs.getString('cloud_last_sync_ts');
final now = DateTime.now();
if (lastSync != null) {
final last = DateTime.tryParse(lastSync);
if (last != null) {
final interval = prefs.getInt('cloud_interval') ?? 6;
if (now.difference(last).inHours < interval) {
return; // Noch nicht fällig
}
}
}
// Sync ausführen
MeloLogger().aktion('auto_sync_start', {});
final st = await cloud.status();
if (st != null) {
final serverSongs = await cloud.listSongs();
MeloLogger().aktion('auto_sync_done',
{'songs': serverSongs.length});
}
await prefs.setString('cloud_last_sync_ts', now.toIso8601String());
} catch (e) {
MeloLogger().fehler('auto_sync_init', e);
}
}
class MeloApp extends StatelessWidget {
const MeloApp({super.key});
@override
Widget build(BuildContext context) {
final auth = AuthService();
return MaterialApp(
title: 'Melo',
debugShowCheckedModeBanner: false,
theme: MeloTheme.theme,
home: auth.istEingeloggt
? const Scaffold(body: MeloHome())
: const LoginScreen(),
);
}
}