public void ScanLibrary(Guid userId, Guid?collectionId, bool clear, CancellationToken cancellationToken)
{
if (ScanInProgress)
{
return;
}
Task.Run(async() =>
{
ScanProgress = new ScanProgress();
ScanInProgress = true;
_metadataRepositoryCache.UseCache = false;
try
{
var collections = await _settingsRepository.GetCollectionsAsync(cancellationToken).ConfigureAwait(false);
var collectionCount = 0;
var collectionsToScan = collections.Where(c => c.Enabled).ToList();
if (collectionId.HasValue)
{
collectionsToScan = collectionsToScan.Where(c => c.Id == collectionId).ToList();
}
ScanProgress.TotalCollectionCount = collectionsToScan.Count;
foreach (var collection in collectionsToScan)
{
collectionCount++;
ScanProgress.CurrentCollection = collectionCount;
ScanProgress.CurrentCollectionId = collection.Id;
if (!Directory.Exists(collection.Path))
{
throw new Exception();
}
if (clear)
{
collection.DateModified = DateTime.MinValue;
await _metadataRepository.InsertOrUpdateCollectionAsync(collection, cancellationToken).ConfigureAwait(false);
}
var files = Directory.GetFiles(collection.Path, collection.Filter, SearchOption.AllDirectories);
var fileCount = 0;
ScanProgress.TotalFileCount = files.Length;
foreach (var file in files)
{
fileCount++;
ScanProgress.CurrentFile = fileCount;
ScanProgress.CurrentFilename = file;
if (fileCount == 1 || fileCount % 250 == 0)
{
_metadataRepository.EndTransaction(true, cancellationToken);
_metadataRepository.BeginTransaction(cancellationToken);
}
await _metadataRepositoryCache.GetTrackAsync(userId, file, collection.Id, false, true, cancellationToken).ConfigureAwait(false);
if (!ScanInProgress)
{
break;
}
}
if (!ScanInProgress)
{
break;
}
_metadataRepository.EndTransaction(true, cancellationToken);
foreach (var track in await _metadataRepository.GetTracksAsync(userId, collection.Id, cancellationToken).ConfigureAwait(false))
{
var fileExists = File.Exists(track.Media.Path);
if (track.Media.Visible == fileExists)
{
continue;
}
track.Media.Visible = fileExists;
await _metadataRepository.InsertOrUpdateFileInfoAsync(track.Media, cancellationToken).ConfigureAwait(false);
if (!fileExists)
{
await _metadataRepository.DeleteTrackReferencesAsync(track.Media, cancellationToken).ConfigureAwait(false);
}
}
await _metadataRepository.DeleteAlbumReferencesAsync(cancellationToken).ConfigureAwait(false);
}
}
catch (Exception ex)
{
_metadataRepository.EndTransaction(false, cancellationToken);
File.WriteAllText($"{Guid.NewGuid():n}.txt", ex.ToString());
}
finally
{
ScanProgress = null;
ScanInProgress = false;
_metadataRepositoryCache.UseCache = true;
}
}, cancellationToken);
}
