Download bug fixes, resuming, lyrics, explicit marking

just_audio/android/src/main/java/com/ryanheise/just_audio/AudioPlayer.java

@@ -3,6 +3,8 @@ package com.ryanheise.just_audio;
 import android.content.Context;
 import android.net.Uri;
 import android.os.Handler;
+import android.util.Log;
+
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.ExoPlaybackException;
 import com.google.android.exoplayer2.PlaybackParameters;
@@ -31,7 +33,6 @@ import com.google.android.exoplayer2.upstream.DefaultHttpDataSource;
 import com.google.android.exoplayer2.upstream.DefaultHttpDataSourceFactory;
 import com.google.android.exoplayer2.upstream.HttpDataSource;
 import com.google.android.exoplayer2.util.Util;
-import io.flutter.Log;
 import io.flutter.plugin.common.BinaryMessenger;
 import io.flutter.plugin.common.EventChannel;
 import io.flutter.plugin.common.EventChannel.EventSink;
@@ -446,7 +447,7 @@ public class AudioPlayer implements MethodCallHandler, Player.EventListener, Met
 		case "progressive":
 			Uri uri = Uri.parse((String)map.get("uri"));
 			//Deezer
-			if (uri.getHost().contains("dzcdn.net")) {
+			if (uri.getHost() != null && uri.getHost().contains("dzcdn.net")) {
                 //Track id is stored in URL fragment (after #)
 			    String fragment = uri.getFragment();
 			    uri = Uri.parse(((String)map.get("uri")).replace("#" + fragment, ""));

lib/api/deezer.dart

@@ -64,7 +64,7 @@ class DeezerAPI {
           'gateway_input': gatewayInput
       },
       data: jsonEncode(params??{}),
-      options: Options(responseType: ResponseType.json, sendTimeout: 5000, receiveTimeout: 5000)
+      options: Options(responseType: ResponseType.json, sendTimeout: 10000, receiveTimeout: 10000)
     );
     return response.data;
   }
@@ -73,7 +73,7 @@ class DeezerAPI {
     Dio dio = Dio();
     Response response = await dio.get(
       'https://api.deezer.com/' + path,
-      options: Options(responseType: ResponseType.json, sendTimeout: 5000, receiveTimeout: 5000)
+      options: Options(responseType: ResponseType.json, sendTimeout: 10000, receiveTimeout: 10000)
     );
     return response.data;
   }

lib/api/definitions.dart

@@ -33,11 +33,12 @@ class Track {
 
   //TODO: Not in DB
   int diskNumber;
+  bool explicit;
 
   List<dynamic> playbackDetails;
 
   Track({this.id, this.title, this.duration, this.album, this.playbackDetails, this.albumArt,
-    this.artists, this.trackNumber, this.offline, this.lyrics, this.favorite, this.diskNumber});
+    this.artists, this.trackNumber, this.offline, this.lyrics, this.favorite, this.diskNumber, this.explicit});
 
   String get artistString => artists.map<String>((art) => art.name).join(', ');
   String get durationString => "${duration.inMinutes}:${duration.inSeconds.remainder(60).toString().padLeft(2, '0')}";
@@ -134,7 +135,8 @@ class Track {
       playbackDetails: [json['MD5_ORIGIN'], json['MEDIA_VERSION']],
       lyrics: Lyrics(id: json['LYRICS_ID'].toString()),
       favorite: favorite,
-      diskNumber: int.parse(json['DISK_NUMBER']??'1')
+      diskNumber: int.parse(json['DISK_NUMBER']??'1'),
+      explicit: (json['EXPLICIT_LYRICS'].toString() == '1') ? true:false
     );
   }
   Map<String, dynamic> toSQL({off = false}) => {
@@ -470,15 +472,17 @@ class Lyrics {
 class Lyric {
   Duration offset;
   String text;
+  String lrcTimestamp;
 
-  Lyric({this.offset, this.text});
+  Lyric({this.offset, this.text, this.lrcTimestamp});
 
   //JSON
   factory Lyric.fromPrivateJson(Map<dynamic, dynamic> json) {
     if (json['milliseconds'] == null || json['line'] == null) return Lyric(); //Empty lyric
     return Lyric(
       offset: Duration(milliseconds: int.parse(json['milliseconds'].toString())),
-      text: json['line']
+      text: json['line'],
+      lrcTimestamp: json['lrc_timestamp']
     );
   }
 

lib/api/definitions.g.dart

@@ -31,6 +31,7 @@ Track _$TrackFromJson(Map<String, dynamic> json) {
         : Lyrics.fromJson(json['lyrics'] as Map<String, dynamic>),
     favorite: json['favorite'] as bool,
     diskNumber: json['diskNumber'] as int,
+    explicit: json['explicit'] as bool,
   );
 }
 
@@ -46,6 +47,7 @@ Map<String, dynamic> _$TrackToJson(Track instance) => <String, dynamic>{
       'lyrics': instance.lyrics,
       'favorite': instance.favorite,
       'diskNumber': instance.diskNumber,
+      'explicit': instance.explicit,
       'playbackDetails': instance.playbackDetails,
     };
 
@@ -244,12 +246,14 @@ Lyric _$LyricFromJson(Map<String, dynamic> json) {
         ? null
         : Duration(microseconds: json['offset'] as int),
     text: json['text'] as String,
+    lrcTimestamp: json['lrcTimestamp'] as String,
   );
 }
 
 Map<String, dynamic> _$LyricToJson(Lyric instance) => <String, dynamic>{
       'offset': instance.offset?.inMicroseconds,
       'text': instance.text,
+      'lrcTimestamp': instance.lrcTimestamp,
     };
 
 QueueSource _$QueueSourceFromJson(Map<String, dynamic> json) {

lib/api/download.dart

@@ -1,3 +1,5 @@
+import 'dart:typed_data';
+
 import 'package:disk_space/disk_space.dart';
 import 'package:ext_storage/ext_storage.dart';
 import 'package:flutter/services.dart';
@@ -30,7 +32,7 @@ class DownloadManager {
   FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
   bool _cancelNotifications = true;
 
-  bool get stopped => queue.length > 0 && _download == null;
+  bool stopped = true;
 
   Future init() async {
     //Prepare DB
@@ -115,7 +117,7 @@ class DownloadManager {
 
   //Update queue, start new download
   void updateQueue() async {
-    if (_download == null && queue.length > 0) {
+    if (_download == null && queue.length > 0 && !stopped) {
       _download = queue[0].download(
         onDone: () async {
           //On download finished
@@ -137,10 +139,12 @@ class DownloadManager {
           updateQueue();
         }
       ).catchError((e, st) async {
+        if (stopped) return;
         print('Download error: $e\n$st');
         //Catch download errors
         _download = null;
         _cancelNotifications = true;
+        //Cancellation error i guess
         await _showError();
       });
       //Show download progress notifications
@@ -148,6 +152,22 @@ class DownloadManager {
     }
   }
 
+  //Stop downloading and end my life
+  Future stop() async {
+    stopped = true;
+    if (_download != null) {
+      await queue[0].stop();
+    }
+    _download = null;
+  }
+
+  //Start again downloads
+  Future start() async {
+    if (_download != null) return;
+    stopped = false;
+    updateQueue();
+  }
+
   //Show error notification
   Future _showError() async {
     AndroidNotificationDetails androidNotificationDetails = AndroidNotificationDetails(
@@ -290,18 +310,13 @@ class DownloadManager {
     return d.path;
   }
 
-  Future addOfflineTrack(Track track, {private = true}) async {
+  Future addOfflineTrack(Track track, {private = true, forceStart = true}) async {
     //Paths
     String path = p.join(_offlinePath, track.id);
     if (track.playbackDetails == null) {
       //Get track from API if download info missing
       track = await deezerAPI.track(track.id);
     }
-    //Load lyrics
-    try {
-      Lyrics l = await deezerAPI.lyrics(track.id);
-      track.lyrics = l;
-    } catch (e) {}
 
     String url = track.getUrl(settings.getQualityInt(settings.offlineQuality));
     if (!private) {
@@ -316,6 +331,12 @@ class DownloadManager {
       if (settings.downloadQuality == AudioQuality.FLAC) {
         path = 'flac';
       }
+    } else {
+      //Load lyrics for private
+      try {
+        Lyrics l = await deezerAPI.lyrics(track.id);
+        track.lyrics = l;
+      } catch (e) {}
     }
 
     Download download = Download(track: track, path: path, url: url, private: private);
@@ -339,7 +360,7 @@ class DownloadManager {
     await b.commit();
 
     queue.add(download);
-    updateQueue();
+    if (forceStart) start();
   }
 
   Future addOfflineAlbum(Album album, {private = true}) async {
@@ -353,8 +374,9 @@ class DownloadManager {
     }
     //Save all tracks
     for (Track track in album.tracks) {
-      await addOfflineTrack(track, private: private);
+      await addOfflineTrack(track, private: private, forceStart: false);
     }
+    start();
   }
 
   //Add offline playlist, can be also used as update
@@ -370,8 +392,9 @@ class DownloadManager {
     }
     //Download all tracks
     for (Track t in playlist.tracks) {
-      await addOfflineTrack(t, private: private);
+      await addOfflineTrack(t, private: private, forceStart: false);
     }
+    start();
   }
 
 
@@ -465,8 +488,13 @@ class DownloadManager {
 
   //Delete queue
   Future clearQueue() async {
-    for (int i=queue.length-1; i>0; i--) {
+    while (queue.length > 0) {
-      await removeDownload(queue[i]);
+      if (queue.length == 1) {
+        if (_download != null) break;
+        await removeDownload(queue[0]);
+        return;
+      }
+      await removeDownload(queue[1]);
     }
   }
 
@@ -485,23 +513,39 @@ class Download {
   DownloadState state;
   String _cover;
 
+  //For canceling
+  IOSink _outSink;
+  CancelToken _cancel;
+  StreamSubscription _progressSub;
+
   int received = 0;
   int total = 1;
 
   Download({this.track, this.path, this.url, this.private, this.state = DownloadState.NONE});
 
+  //Stop download
+  Future stop() async {
+    if (_cancel != null) _cancel.cancel();
+    //if (_outSink != null) _outSink.close();
+    if (_progressSub != null) _progressSub.cancel();
+
+    received = 0;
+    total = 1;
+    state = DownloadState.NONE;
+  }
+
   Future download({onDone}) async {
     Dio dio = Dio();
 
     //TODO: Check for internet before downloading
 
-    if (!this.private) {
+    if (!this.private && !(this.path.endsWith('.mp3') || this.path.endsWith('.flac'))) {
       String ext = this.path;
       //Get track details
-      Map rawTrack = (await deezerAPI.callApi('song.getListData', params: {'sng_ids': [track.id]}))['results']['data'][0];
+      Map _rawTrackData = await deezerAPI.callApi('song.getListData', params: {'sng_ids': [track.id]});
+      Map rawTrack = _rawTrackData['results']['data'][0];
       this.track = Track.fromPrivateJson(rawTrack);
 
-
       //Get path if public
       RegExp sanitize = RegExp(r'[\/\\\?\%\*\:\|\"\<\>]');
       //Download path
@@ -533,6 +577,9 @@ class Download {
 
       //Create filename
       String _filename = settings.downloadFilename;
+      //Feats filter
+      String feats = '';
+      if (track.artists.length > 1) feats = "feat. ${track.artists.sublist(1).map((a) => a.name).join(', ')}";
       //Filters
       Map<String, String> vars = {
         '%artists%': track.artistString.replaceAll(sanitize, ''),
@@ -540,7 +587,8 @@ class Download {
         '%title%': track.title.replaceAll(sanitize, ''),
         '%album%': track.album.title.replaceAll(sanitize, ''),
         '%trackNumber%': track.trackNumber.toString(),
-        '%0trackNumber%': track.trackNumber.toString().padLeft(2, '0')
+        '%0trackNumber%': track.trackNumber.toString().padLeft(2, '0'),
+        '%feats%': feats
       };
       //Replace
       vars.forEach((key, value) {
@@ -553,15 +601,48 @@ class Download {
     //Download
     this.state = DownloadState.DOWNLOADING;
 
-    await dio.download(
+    //Create download file
-      this.url,
+    File downloadFile = File(this.path + '.ENC');
-      this.path + '.ENC',
+    //Get start position
-      deleteOnError: true,
+    int start = 0;
-      onReceiveProgress: (rec, total) {
+    if (await downloadFile.exists()) {
-        this.received = rec;
+      FileStat stat = await downloadFile.stat();
-        this.total = total;
+      start = stat.size;
+    } else {
+      //Create file if doesnt exist
+      await downloadFile.create(recursive: true);
     }
+    //Download
+    _cancel = CancelToken();
+    Response response = await dio.get(
+      this.url,
+      options: Options(
+        responseType: ResponseType.stream,
+        headers: {
+          'Range': 'bytes=$start-'
+        },
+      ),
+      cancelToken: _cancel
     );
+    //Size
+    this.total = int.parse(response.headers['Content-Length'][0]) + start;
+    this.received = start;
+    //Save
+    _outSink = downloadFile.openWrite(mode: FileMode.append);
+    Stream<Uint8List> _data = response.data.stream.asBroadcastStream();
+    _progressSub = _data.listen((Uint8List c) {
+      this.received += c.length;
+    });
+    //Pipe to file
+    try {
+      await _outSink.addStream(_data);
+    } catch (e) {
+      await _outSink.close();
+      throw Exception('Download error');
+    }
+      await _outSink.close();
+    _cancel = null;
+
 
     this.state = DownloadState.POST;
     //Decrypt
@@ -586,6 +667,28 @@ class Download {
     //Remove encrypted
     await File(path + '.ENC').delete();
     if (!settings.albumFolder) await File(_cover).delete();
+
+    //Get lyrics
+    Lyrics lyrics;
+    try {
+      lyrics = await deezerAPI.lyrics(track.id);
+    } catch (e) {}
+    if (lyrics != null && lyrics.lyrics != null) {
+      //Create .LRC file
+      String lrcPath = p.join(p.dirname(path), p.basenameWithoutExtension(path)) + '.lrc';
+      File lrcFile = File(lrcPath);
+      String lrcData = '';
+      //Generate file
+      lrcData += '[ar:${track.artistString}]\r\n';
+      lrcData += '[al:${track.album.title}]\r\n';
+      lrcData += '[ti:${track.title}]\r\n';
+      for (Lyric l in lyrics.lyrics) {
+        if (l.lrcTimestamp != null && l.lrcTimestamp != '' && l.text != null)
+          lrcData += '${l.lrcTimestamp}${l.text}\r\n';
+      }
+      lrcFile.writeAsString(lrcData);
+    }
+
     this.state = DownloadState.DONE;
     onDone();
     return;

lib/api/player.dart

@@ -309,12 +309,13 @@ class AudioPlayerTask extends BackgroundAudioTask {
         MediaControl.skipToPrevious,
         if (_player.playing) MediaControl.pause else MediaControl.play,
         MediaControl.skipToNext,
-        //MediaControl.stop
+        MediaControl.stop
       ],
       systemActions: [
         MediaAction.seekTo,
         MediaAction.seekForward,
-        MediaAction.seekBackward
+        MediaAction.seekBackward,
+        //MediaAction.stop
       ],
       processingState: _getProcessingState(),
       playing: _player.playing,

lib/ui/downloads_screen.dart

@@ -52,6 +52,7 @@ class DownloadTile extends StatelessWidget {
           subtitle: Text(subtitle),
           leading: CachedImage(
             url: download.track.albumArt.thumb,
+            width: 48.0,
           ),
           trailing: trailing,
           onTap: () {
@@ -102,8 +103,36 @@ class _DownloadsScreenState extends State<DownloadsScreen> {
           title: Text('Downloads'),
           actions: [
             IconButton(
-              icon: Icon(Icons.delete_sweep),
+              icon: Icon(downloadManager.stopped ? Icons.play_arrow : Icons.stop),
               onPressed: () {
+                setState(() {
+                  if (downloadManager.stopped) downloadManager.start();
+                  else downloadManager.stop();
+                });
+              },
+            )
+          ],
+        ),
+        body: ListView(
+          children: <Widget>[
+            StreamBuilder(
+              stream: Stream.periodic(Duration(milliseconds: 500)).asBroadcastStream(), //Periodic to get current download progress
+              builder: (BuildContext context, AsyncSnapshot snapshot) {
+
+                if (downloadManager.queue.length == 0)
+                  return Container(width: 0, height: 0,);
+
+                return Column(
+                    children: [
+                      ...List.generate(downloadManager.queue.length, (i) {
+                        return DownloadTile(downloadManager.queue[i], onDelete: () => setState(() => {}));
+                      }),
+                      if (downloadManager.queue.length > 1 || (downloadManager.stopped && downloadManager.queue.length > 0))
+                        ListTile(
+                          title: Text('Clear queue'),
+                          subtitle: Text("This won't delete currently downloading item"),
+                          leading: Icon(Icons.delete),
+                          onTap: () async {
                             showDialog(
                                 context: context,
                                 builder: (context) {
@@ -128,21 +157,7 @@ class _DownloadsScreenState extends State<DownloadsScreen> {
                             );
                           },
                         )
-          ],
+                    ]
-        ),
-        body: ListView(
-          children: <Widget>[
-            StreamBuilder(
-              stream: Stream.periodic(Duration(milliseconds: 500)).asBroadcastStream(), //Periodic to get current download progress
-              builder: (BuildContext context, AsyncSnapshot snapshot) {
-
-                if (downloadManager.queue.length == 0)
-                  return Container(width: 0, height: 0,);
-
-                return Column(
-                    children: List.generate(downloadManager.queue.length, (i) {
-                      return DownloadTile(downloadManager.queue[i], onDelete: () => setState(() => {}));
-                    })
                 );
               },
             ),

lib/ui/library.dart

@@ -56,20 +56,20 @@ class LibraryScreen extends StatelessWidget {
       body: ListView(
         children: <Widget>[
           Container(height: 4.0,),
-          if (downloadManager.stopped)
+          if (downloadManager.stopped && downloadManager.queue.length > 0)
             ListTile(
               title: Text('Downloads'),
               leading: Icon(Icons.file_download),
               subtitle: Text('Downloading is currently stopped, click here to resume.'),
               onTap: () {
-                downloadManager.updateQueue();
+                downloadManager.start();
                 Navigator.of(context).push(MaterialPageRoute(
                   builder: (context) => DownloadsScreen()
                 ));
               },
             ),
           //Dirty if to not use columns
-          if (downloadManager.stopped)
+          if (downloadManager.stopped && downloadManager.queue.length > 0)
             Divider(),
 
           ListTile(

lib/ui/settings_screen.dart

@@ -497,7 +497,7 @@ class _GeneralSettingsState extends State<GeneralSettings> {
                         ),
                         Container(height: 8.0),
                         Text(
-                          'Valid variables are: %artists%, %artist%, %title%, %album%, %trackNumber%, %0trackNumber%',
+                          'Valid variables are: %artists%, %artist%, %title%, %album%, %trackNumber%, %0trackNumber%, %feats%',
                           style: TextStyle(
                             fontSize: 12.0,
                           ),

lib/ui/tiles.dart

@@ -49,6 +49,7 @@ class _TrackTileState extends State<TrackTile> {
       title: Text(
         widget.track.title,
         maxLines: 1,
+        overflow: TextOverflow.clip,
         style: TextStyle(
           color: nowPlaying?Theme.of(context).primaryColor:null
         ),
@@ -59,12 +60,23 @@ class _TrackTileState extends State<TrackTile> {
       ),
       leading: CachedImage(
         url: widget.track.albumArt.thumb,
+        width: 48,
       ),
       onTap: widget.onTap,
       onLongPress: widget.onHold,
       trailing: Row(
         mainAxisSize: MainAxisSize.min,
         children: [
+          if (widget.track.explicit??false)
+            Padding(
+              padding: EdgeInsets.symmetric(horizontal: 4.0),
+              child: Text(
+                'E',
+                style: TextStyle(
+                  color: Colors.red
+                ),
+              ),
+            ),
           Padding(
             padding: EdgeInsets.symmetric(horizontal: 2.0),
             child: Text(widget.track.durationString),
@@ -98,6 +110,7 @@ class AlbumTile extends StatelessWidget {
       ),
       leading: CachedImage(
         url: album.art.thumb,
+        width: 48,
       ),
       onTap: onTap,
       onLongPress: onHold,
@@ -172,6 +185,7 @@ class PlaylistTile extends StatelessWidget {
       ),
       leading: CachedImage(
         url: playlist.image.thumb,
+        width: 48,
       ),
       onTap: onTap,
       onLongPress: onHold,