public MusicLoader(string syncDir, string token, long userId)
{
DependencyUtility.BuildUp(this);
syncDirectory = syncDir;
this.userId = userId;
api = new VkApi();
api.Authorize(token, userId);
api.Invoke("stats.trackVisitor", new Dictionary <string, string>(), true); // статистика посещаемости приложения
remoteAudioSizeHelper = new RemoteAudioSizeHelper(Path.Combine(AppPaths.SettingsPath, "sizes.dat"));
tracks = new ConcurrentSortedList <int, Track>();
int key = 0;
foreach (var track in TrackRepository.GetTracks())
{
tracks.Add(key++, track);
}
}
private void Load()
{
if (!Monitor.TryEnter(musicLoadLock))
{
return;
}
OnSynchronizationStarted();
var audios = api.Audio.Get(userId);
OnProgressChanged(new ProgressStatus {
TotalCount = audios.Count
});
var addedList = new List <Track>();
var trackIDs = tracks.Values.Select(t => t.Id).ToList();
var tracksCount = tracks.Count;
tracks = new ConcurrentSortedList <int, Track>();
int loadedTracksCount = 0;
var tracksDictionary = audios.ToDictionary(audio => audio, audio => new Track().Update(audio));
var trackIndexes = tracksDictionary.Values.Select((s, i) => new { s, i }).ToDictionary(x => x.s, x => x.i);
Parallel.ForEach(audios, new ParallelOptions {
MaxDegreeOfParallelism = 4
}, (audio) =>
{
var track = tracksDictionary[audio];
var fileName = track.GetFilePath();
var fi = new FileInfo(fileName);
if (remoteAudioSizeHelper.GetSize(audio) > 0)
{
if (!trackIDs.Contains(audio.Id))
{
addedList.Add(track);
}
if (!fi.Exists || fi.Length < remoteAudioSizeHelper.GetSize(audio))
{
TrySaveFileFromUrl(audio.Url.ToString(), fileName);
}
tracks.Add(trackIndexes[track], track);
OnAddedOneTrack(track, tracks.Values.ToList());
Interlocked.Increment(ref loadedTracksCount);
OnProgressChanged(new ProgressStatus {
TotalCount = audios.Count, DoneCount = loadedTracksCount
});
}
});
remoteAudioSizeHelper.Save();
TrackRepository.SaveTracks(tracks.Values.ToList());
// TODO do we really need deleted list?
var deletedList = GetDeletedTrackIDs();
OnCompleted();
lastLoadTime = DateTime.UtcNow;
Monitor.Exit(musicLoadLock);
}
