582 lines
20 KiB
Dart
582 lines
20 KiB
Dart
import 'package:disk_space/disk_space.dart';
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import 'package:ext_storage/ext_storage.dart';
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import 'package:flutter/services.dart';
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import 'package:path_provider/path_provider.dart';
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import 'package:random_string/random_string.dart';
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import 'package:sqflite/sqflite.dart';
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import 'package:path/path.dart' as p;
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import 'package:dio/dio.dart';
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import 'package:filesize/filesize.dart';
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import 'package:permission_handler/permission_handler.dart';
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import 'package:flutter_local_notifications/flutter_local_notifications.dart';
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import 'dart:io';
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import 'dart:async';
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import 'deezer.dart';
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import '../settings.dart';
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import 'definitions.dart';
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import '../ui/cached_image.dart';
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DownloadManager downloadManager = DownloadManager();
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MethodChannel platformChannel = const MethodChannel('f.f.freezer/native');
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class DownloadManager {
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Database db;
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List<Download> queue = [];
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String _offlinePath;
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Future _download;
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FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
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bool _cancelNotifications = true;
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bool get stopped => queue.length > 0 && _download == null;
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Future init() async {
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//Prepare DB
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String dir = await getDatabasesPath();
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String path = p.join(dir, 'offline.db');
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db = await openDatabase(
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path,
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version: 1,
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onCreate: (Database db, int version) async {
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Batch b = db.batch();
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//Create tables
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b.execute(""" CREATE TABLE downloads (
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id INTEGER PRIMARY KEY AUTOINCREMENT, path TEXT, url TEXT, private INTEGER, state INTEGER, trackId TEXT)""");
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b.execute("""CREATE TABLE tracks (
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id TEXT PRIMARY KEY, title TEXT, album TEXT, artists TEXT, duration INTEGER, albumArt TEXT, trackNumber INTEGER, offline INTEGER, lyrics TEXT, favorite INTEGER)""");
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b.execute("""CREATE TABLE albums (
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id TEXT PRIMARY KEY, title TEXT, artists TEXT, tracks TEXT, art TEXT, fans INTEGER, offline INTEGER, library INTEGER)""");
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b.execute("""CREATE TABLE artists (
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id TEXT PRIMARY KEY, name TEXT, albums TEXT, topTracks TEXT, picture TEXT, fans INTEGER, albumCount INTEGER, offline INTEGER, library INTEGER)""");
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b.execute("""CREATE TABLE playlists (
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id TEXT PRIMARY KEY, title TEXT, tracks TEXT, image TEXT, duration INTEGER, userId TEXT, userName TEXT, fans INTEGER, library INTEGER, description TEXT)""");
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await b.commit();
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}
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);
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//Prepare folders (/sdcard/Android/data/freezer/data/)
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_offlinePath = p.join((await getExternalStorageDirectory()).path, 'offline/');
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await Directory(_offlinePath).create(recursive: true);
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//Notifications
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await _prepareNotifications();
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//Restore
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List<Map> downloads = await db.rawQuery("SELECT * FROM downloads INNER JOIN tracks ON tracks.id = downloads.trackId WHERE downloads.state = 0");
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downloads.forEach((download) => queue.add(Download.fromSQL(download, parseTrack: true)));
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}
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//Initialize flutter local notification plugin
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Future _prepareNotifications() async {
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flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
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AndroidInitializationSettings androidInitializationSettings = AndroidInitializationSettings('@drawable/ic_logo');
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InitializationSettings initializationSettings = InitializationSettings(androidInitializationSettings, null);
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await flutterLocalNotificationsPlugin.initialize(initializationSettings);
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}
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//Show download progress notification, if now/total = null, show intermediate
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Future _startProgressNotification() async {
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_cancelNotifications = false;
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Timer.periodic(Duration(milliseconds: 500), (timer) async {
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//Cancel notifications
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if (_cancelNotifications) {
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flutterLocalNotificationsPlugin.cancel(10);
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timer.cancel();
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return;
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}
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//Not downloading
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if (this.queue.length <= 0) return;
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Download d = queue[0];
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//Prepare and show notification
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AndroidNotificationDetails androidNotificationDetails = AndroidNotificationDetails(
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'download', 'Download', 'Download',
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importance: Importance.Default,
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priority: Priority.Default,
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showProgress: true,
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maxProgress: d.total??1,
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progress: d.received??1,
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playSound: false,
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enableVibration: false,
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autoCancel: true,
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//ongoing: true, //Allow dismissing
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indeterminate: (d.total == null || d.total == d.received),
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onlyAlertOnce: true
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);
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NotificationDetails notificationDetails = NotificationDetails(androidNotificationDetails, null);
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await downloadManager.flutterLocalNotificationsPlugin.show(
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10,
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'Downloading: ${d.track.title}',
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(d.state == DownloadState.POST) ? 'Post processing...' : '${filesize(d.received)} / ${filesize(d.total)} (${queue.length} in queue)',
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notificationDetails
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);
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});
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}
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//Update queue, start new download
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void updateQueue() async {
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if (_download == null && queue.length > 0) {
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_download = queue[0].download(
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onDone: () async {
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//On download finished
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await db.rawUpdate('UPDATE downloads SET state = 1 WHERE trackId = ?', [queue[0].track.id]);
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/*
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if (queue[0].private) {
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await db.rawUpdate('UPDATE downloads SET state = 1 WHERE trackId = ?', [queue[0].track.id]);
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} else {
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//Remove on db if public
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await db.delete('downloads', where: 'trackId = ?', whereArgs: [queue[0].track.id]);
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}
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*/
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queue.removeAt(0);
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_download = null;
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//Remove notification if no more downloads
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if (queue.length == 0) {
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_cancelNotifications = true;
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}
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updateQueue();
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}
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).catchError((err) async {
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//Catch download errors
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_download = null;
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_cancelNotifications = true;
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await _showError();
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});
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//Show download progress notifications
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if (_cancelNotifications == null || _cancelNotifications) _startProgressNotification();
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}
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}
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//Show error notification
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Future _showError() async {
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AndroidNotificationDetails androidNotificationDetails = AndroidNotificationDetails(
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'downloadError', 'Download Error', 'Download Error'
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);
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NotificationDetails notificationDetails = NotificationDetails(androidNotificationDetails, null);
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flutterLocalNotificationsPlugin.show(
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11, 'Error while downloading!', 'Please restart downloads in the library', notificationDetails
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);
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}
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//Returns all offline tracks
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Future<List<Track>> allOfflineTracks() async {
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List data = await db.query('tracks', where: 'offline == 1');
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List<Track> tracks = [];
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//Load track data
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for (var t in data) {
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tracks.add(await getTrack(t['id']));
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}
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return tracks;
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}
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//Get all offline playlists
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Future<List<Playlist>> getOfflinePlaylists() async {
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List data = await db.query('playlists');
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List<Playlist> playlists = [];
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//Load playlists
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for (var p in data) {
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playlists.add(await getPlaylist(p['id']));
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}
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return playlists;
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}
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//Get playlist metadata with tracks
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Future<Playlist> getPlaylist(String id) async {
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if (id == null) return null;
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List data = await db.query('playlists', where: 'id == ?', whereArgs: [id]);
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if (data.length == 0) return null;
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//Load playlist tracks
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Playlist p = Playlist.fromSQL(data[0]);
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for (int i=0; i<p.tracks.length; i++) {
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p.tracks[i] = await getTrack(p.tracks[i].id);
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}
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return p;
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}
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//Gets favorites
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Future<Playlist> getFavorites() async {
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return await getPlaylist('FAVORITES');
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}
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Future<List<Album>> getOfflineAlbums({List albumsData}) async {
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//Load albums
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if (albumsData == null) {
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albumsData = await db.query('albums', where: 'offline == 1');
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}
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List<Album> albums = albumsData.map((alb) => Album.fromSQL(alb)).toList();
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for(int i=0; i<albums.length; i++) {
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albums[i].library = true;
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//Load tracks
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for(int j=0; j<albums[i].tracks.length; j++) {
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albums[i].tracks[j] = await getTrack(albums[i].tracks[j].id, album: albums[i]);
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}
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//Load artists
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List artistsData = await db.rawQuery('SELECT * FROM artists WHERE id IN (${albumsData[i]['artists']})');
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albums[i].artists = artistsData.map<Artist>((a) => Artist.fromSQL(a)).toList();
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}
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return albums;
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}
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//Get track with metadata from db
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Future<Track> getTrack(String id, {Album album, List<Artist> artists}) async {
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List tracks = await db.query('tracks', where: 'id == ?', whereArgs: [id]);
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if (tracks.length == 0) return null;
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Track t = Track.fromSQL(tracks[0]);
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//Load album from DB
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t.album = album ?? Album.fromSQL((await db.query('albums', where: 'id == ?', whereArgs: [t.album.id]))[0]);
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if (artists != null) {
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t.artists = artists;
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return t;
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}
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//Load artists from DB
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for (int i=0; i<t.artists.length; i++) {
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t.artists[i] = Artist.fromSQL(
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(await db.query('artists', where: 'id == ?', whereArgs: [t.artists[i].id]))[0]);
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}
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return t;
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}
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Future removeOfflineTrack(String id) async {
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//Check if track present in albums
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List counter = await db.rawQuery('SELECT COUNT(*) FROM albums WHERE tracks LIKE "%$id%"');
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if (counter[0]['COUNT(*)'] > 0) return;
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//and in playlists
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counter = await db.rawQuery('SELECT COUNT(*) FROM playlists WHERE tracks LIKE "%$id%"');
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if (counter[0]['COUNT(*)'] > 0) return;
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//Remove file
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List download = await db.query('downloads', where: 'trackId == ?', whereArgs: [id]);
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await File(download[0]['path']).delete();
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//Delete from db
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await db.delete('tracks', where: 'id == ?', whereArgs: [id]);
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await db.delete('downloads', where: 'trackId == ?', whereArgs: [id]);
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}
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//Delete offline album
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Future removeOfflineAlbum(String id) async {
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List data = await db.rawQuery('SELECT * FROM albums WHERE id == ? AND offline == 1', [id]);
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if (data.length == 0) return;
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Map<String, dynamic> album = Map.from(data[0]); //make writable
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//Remove DB
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album['offline'] = 0;
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await db.update('albums', album, where: 'id == ?', whereArgs: [id]);
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//Get track ids
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List<String> tracks = album['tracks'].split(',');
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for (String t in tracks) {
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//Remove tracks
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await removeOfflineTrack(t);
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}
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}
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Future removeOfflinePlaylist(String id) async {
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List data = await db.query('playlists', where: 'id == ?', whereArgs: [id]);
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if (data.length == 0) return;
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Playlist p = Playlist.fromSQL(data[0]);
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//Remove db
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await db.delete('playlists', where: 'id == ?', whereArgs: [id]);
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//Remove tracks
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for(Track t in p.tracks) {
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await removeOfflineTrack(t.id);
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}
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}
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//Get path to offline track
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Future<String> getOfflineTrackPath(String id) async {
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List<Map> tracks = await db.rawQuery('SELECT path FROM downloads WHERE state == 1 AND trackId == ?', [id]);
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if (tracks.length < 1) {
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return null;
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}
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Download d = Download.fromSQL(tracks[0]);
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return d.path;
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}
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Future addOfflineTrack(Track track, {private = true}) async {
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//Paths
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String path = p.join(_offlinePath, track.id);
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if (track.playbackDetails == null) {
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//Get track from API if download info missing
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track = await deezerAPI.track(track.id);
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}
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//Load lyrics
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try {
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Lyrics l = await deezerAPI.lyrics(track.id);
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track.lyrics = l;
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} catch (e) {}
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String url = track.getUrl(settings.getQualityInt(settings.offlineQuality));
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if (!private) {
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//Check permissions
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if (!(await Permission.storage.request().isGranted)) {
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return;
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}
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//If saving to external
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url = track.getUrl(settings.getQualityInt(settings.downloadQuality));
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//Save just extension to path, will be generated before download
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path = 'mp3';
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if (settings.downloadQuality == AudioQuality.FLAC) {
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path = 'flac';
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}
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}
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Download download = Download(track: track, path: path, url: url, private: private);
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//Database
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Batch b = db.batch();
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b.insert('downloads', download.toSQL());
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b.insert('tracks', track.toSQL(off: false), conflictAlgorithm: ConflictAlgorithm.ignore);
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if (private) {
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//Duplicate check
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List<Map> duplicate = await db.rawQuery('SELECT * FROM downloads WHERE trackId == ?', [track.id]);
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if (duplicate.length != 0) return;
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//Save art
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//await imagesDatabase.getImage(track.albumArt.full);
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imagesDatabase.saveImage(track.albumArt.full);
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//Save to db
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b.insert('tracks', track.toSQL(off: true), conflictAlgorithm: ConflictAlgorithm.replace);
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b.insert('albums', track.album.toSQL(), conflictAlgorithm: ConflictAlgorithm.ignore);
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track.artists.forEach((art) => b.insert('artists', art.toSQL(), conflictAlgorithm: ConflictAlgorithm.ignore));
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}
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await b.commit();
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queue.add(download);
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updateQueue();
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}
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Future addOfflineAlbum(Album album, {private = true}) async {
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//Get full album from API if tracks are missing
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if (album.tracks == null || album.tracks.length == 0) {
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album = await deezerAPI.album(album.id);
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}
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//Update album in database
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if (private) {
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await db.insert('albums', album.toSQL(off: true), conflictAlgorithm: ConflictAlgorithm.replace);
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}
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//Save all tracks
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for (Track track in album.tracks) {
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await addOfflineTrack(track, private: private);
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}
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}
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//Add offline playlist, can be also used as update
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Future addOfflinePlaylist(Playlist playlist, {private = true}) async {
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//Load full playlist if missing tracks
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if (playlist.tracks == null || playlist.tracks.length != playlist.trackCount) {
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playlist = await deezerAPI.fullPlaylist(playlist.id);
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}
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playlist.library = true;
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//To DB
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if (private) {
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await db.insert('playlists', playlist.toSQL(), conflictAlgorithm: ConflictAlgorithm.replace);
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}
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//Download all tracks
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for (Track t in playlist.tracks) {
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await addOfflineTrack(t, private: private);
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}
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}
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Future checkOffline({Album album, Track track, Playlist playlist}) async {
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//Check if album/track (TODO: Artist, playlist) is offline
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if (track != null) {
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List res = await db.query('tracks', where: 'id == ? AND offline == 1', whereArgs: [track.id]);
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if (res.length == 0) return false;
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return true;
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}
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if (album != null) {
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List res = await db.query('albums', where: 'id == ? AND offline == 1', whereArgs: [album.id]);
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if (res.length == 0) return false;
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return true;
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}
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if (playlist != null && playlist.id != null) {
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List res = await db.query('playlists', where: 'id == ?', whereArgs: [playlist.id]);
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if (res.length == 0) return false;
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return true;
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}
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return false;
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}
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//Offline search
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Future<SearchResults> search(String query) async {
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SearchResults results = SearchResults(
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tracks: [],
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albums: [],
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artists: [],
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playlists: []
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);
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//Tracks
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List tracksData = await db.rawQuery('SELECT * FROM tracks WHERE offline == 1 AND title like "%$query%"');
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for (Map trackData in tracksData) {
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results.tracks.add(await getTrack(trackData['id']));
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}
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//Albums
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List albumsData = await db.rawQuery('SELECT * FROM albums WHERE offline == 1 AND title like "%$query%"');
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results.albums = await getOfflineAlbums(albumsData: albumsData);
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//Artists
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//TODO: offline artists
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//Playlists
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List playlists = await db.rawQuery('SELECT * FROM playlists WHERE title like "%$query%"');
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for (Map playlist in playlists) {
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results.playlists.add(await getPlaylist(playlist['id']));
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}
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return results;
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}
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Future<List<Download>> getFinishedDownloads() async {
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//Fetch from db
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List<Map> data = await db.rawQuery("SELECT * FROM downloads INNER JOIN tracks ON tracks.id = downloads.trackId WHERE downloads.state = 1");
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List<Download> downloads = data.map<Download>((d) => Download.fromSQL(d, parseTrack: true)).toList();
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return downloads;
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}
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//Get stats for library screen
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Future<List<String>> getStats() async {
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//Get offline counts
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int trackCount = (await db.rawQuery('SELECT COUNT(*) FROM tracks WHERE offline == 1'))[0]['COUNT(*)'];
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int albumCount = (await db.rawQuery('SELECT COUNT(*) FROM albums WHERE offline == 1'))[0]['COUNT(*)'];
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int playlistCount = (await db.rawQuery('SELECT COUNT(*) FROM albums WHERE offline == 1'))[0]['COUNT(*)'];
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//Free space
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double diskSpace = await DiskSpace.getFreeDiskSpace;
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//Used space
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List<FileSystemEntity> offlineStat = await Directory(_offlinePath).list().toList();
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int offlineSize = 0;
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for (var fs in offlineStat) {
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offlineSize += (await fs.stat()).size;
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}
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//Return as a list, maybe refactor in future if feature stays
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return ([
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trackCount.toString(),
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albumCount.toString(),
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playlistCount.toString(),
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filesize(offlineSize),
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filesize((diskSpace * 1000000).floor())
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]);
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}
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}
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class Download {
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Track track;
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String path;
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String url;
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bool private;
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DownloadState state;
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String _cover;
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int received = 0;
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int total = 1;
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Download({this.track, this.path, this.url, this.private, this.state = DownloadState.NONE});
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Future download({onDone}) async {
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Dio dio = Dio();
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//TODO: Check for internet before downloading
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if (!this.private) {
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String ext = this.path;
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//Get track details
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this.track = await deezerAPI.track(track.id);
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//Get path if public
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RegExp sanitize = RegExp(r'[\/\\\?\%\*\:\|\"\<\>]');
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//Download path
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if (settings.downloadFolderStructure) {
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this.path = p.join(
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settings.downloadPath ?? (await ExtStorage.getExternalStoragePublicDirectory(ExtStorage.DIRECTORY_MUSIC)),
|
|
track.artists[0].name.replaceAll(sanitize, ''),
|
|
track.album.title.replaceAll(sanitize, ''),
|
|
);
|
|
} else {
|
|
this.path = settings.downloadPath;
|
|
}
|
|
//Make dirs
|
|
await Directory(this.path).create(recursive: true);
|
|
|
|
//Grab cover
|
|
_cover = p.join(this.path, 'cover.jpg');
|
|
if (!settings.downloadFolderStructure) _cover = p.join(this.path, randomAlpha(12) + '_cover.jpg');
|
|
|
|
if (!await File(_cover).exists()) {
|
|
try {
|
|
await dio.download(
|
|
this.track.albumArt.full,
|
|
_cover,
|
|
);
|
|
} catch (e) {print('Error downloading cover');}
|
|
}
|
|
|
|
//Add filename
|
|
String _filename = '${track.trackNumber.toString().padLeft(2, '0')}. ${track.title.replaceAll(sanitize, "")}.$ext';
|
|
//Different naming types
|
|
if (settings.downloadNaming == DownloadNaming.STANDALONE)
|
|
_filename = '${track.artistString.replaceAll(sanitize, "")} - ${track.title.replaceAll(sanitize, "")}.$ext';
|
|
|
|
this.path = p.join(this.path, _filename);
|
|
}
|
|
//Download
|
|
this.state = DownloadState.DOWNLOADING;
|
|
|
|
await dio.download(
|
|
this.url,
|
|
this.path + '.ENC',
|
|
deleteOnError: true,
|
|
onReceiveProgress: (rec, total) {
|
|
this.received = rec;
|
|
this.total = total;
|
|
}
|
|
);
|
|
|
|
this.state = DownloadState.POST;
|
|
//Decrypt
|
|
await platformChannel.invokeMethod('decryptTrack', {'id': track.id, 'path': path});
|
|
//Tag
|
|
if (!private) {
|
|
//Tag track in native
|
|
await platformChannel.invokeMethod('tagTrack', {
|
|
'path': path,
|
|
'title': track.title,
|
|
'album': track.album.title,
|
|
'artists': track.artistString,
|
|
'artist': track.artists[0].name,
|
|
'cover': _cover,
|
|
'trackNumber': track.trackNumber
|
|
});
|
|
//Rescan android library
|
|
await platformChannel.invokeMethod('rescanLibrary', {
|
|
'path': path
|
|
});
|
|
}
|
|
//Remove encrypted
|
|
await File(path + '.ENC').delete();
|
|
if (!settings.downloadFolderStructure) await File(_cover).delete();
|
|
this.state = DownloadState.DONE;
|
|
onDone();
|
|
return;
|
|
}
|
|
|
|
//JSON
|
|
Map<String, dynamic> toSQL() => {
|
|
'trackId': track.id,
|
|
'path': path,
|
|
'url': url,
|
|
'state': state == DownloadState.DONE ? 1:0,
|
|
'private': private?1:0
|
|
};
|
|
factory Download.fromSQL(Map<String, dynamic> data, {parseTrack = false}) => Download(
|
|
track: parseTrack?Track.fromSQL(data):Track(id: data['trackId']),
|
|
path: data['path'],
|
|
url: data['url'],
|
|
state: data['state'] == 1 ? DownloadState.DONE:DownloadState.NONE,
|
|
private: data['private'] == 1
|
|
);
|
|
}
|
|
|
|
enum DownloadState {
|
|
NONE,
|
|
DOWNLOADING,
|
|
POST,
|
|
DONE
|
|
} |