84 lines
2.3 KiB
Dart
84 lines
2.3 KiB
Dart
import 'dart:io';
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import 'package:file_picker/file_picker.dart';
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import 'package:flutter/foundation.dart';
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import 'package:uuid/uuid.dart';
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import 'android_scan.dart';
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import 'database.dart';
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import 'permissions.dart';
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import 'scan_service.dart';
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/// Beschriftung des Hinzufügen-/Scan-Buttons je Plattform.
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String get addMusicLabel =>
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Platform.isAndroid ? 'Musik scannen' : 'Musikordner hinzufügen';
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/// Koordiniert Ordnerwahl und Scans; hält den Scan-Fortschritt für die UI.
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/// Android scannt automatisch über MediaStore (Scoped Storage lässt keinen
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/// direkten Dateizugriff zu); Desktop scannt vom Nutzer gewählte Ordner.
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class LibraryService extends ChangeNotifier {
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LibraryService(this.db);
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final MeloDb db;
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static const _uuid = Uuid();
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bool scanning = false;
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int scanDone = 0;
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int scanTotal = 0;
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bool permissionDenied = false;
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/// Auf Android: automatischer Geräte-Scan. Auf Desktop: Ordner wählen + scannen.
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Future<void> pickFolderAndScan() async {
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if (!await _ensurePermission()) return;
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if (Platform.isAndroid) {
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await _scan();
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return;
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}
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final path = await FilePicker.getDirectoryPath();
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if (path == null) return;
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await db.addFolder(FoldersCompanion.insert(
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id: _uuid.v4(),
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path: path,
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updatedAtMs: DateTime.now().millisecondsSinceEpoch,
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));
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await _scan();
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}
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/// Scannt erneut (Android: ganzes Gerät; Desktop: alle gemerkten Ordner).
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Future<void> rescan() async {
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if (!await _ensurePermission()) return;
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await _scan();
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}
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Future<bool> _ensurePermission() async {
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final granted = await ensureAudioPermission();
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permissionDenied = !granted;
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notifyListeners();
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return granted;
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}
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Future<void> _scan() async {
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if (scanning) return;
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scanning = true;
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scanDone = 0;
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scanTotal = 0;
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notifyListeners();
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try {
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if (Platform.isAndroid) {
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await scanAndroidMediaStore(db, onProgress: _onProgress);
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} else {
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final folders = (await db.activeFolders()).map((f) => f.path).toList();
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await scanFolders(db, folders, onProgress: _onProgress);
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}
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} finally {
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scanning = false;
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notifyListeners();
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}
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}
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void _onProgress(int done, int total) {
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scanDone = done;
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scanTotal = total;
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notifyListeners();
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}
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}
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