protected virtual IEnumerable <AlbumInfo> LoadAllAlbums()
{
var setFolders = _dbContext.Set <MediaFolder>();
var dbAlbums = setFolders
.AsNoTracking()
.OfType <MediaAlbum>()
.Select(x => new { x.Id, x.Name })
.ToDictionary(x => x.Name);
foreach (var lazyProvider in _albumProviders)
{
var provider = lazyProvider.Value;
var albums = provider.GetAlbums().DistinctBy(x => x.Name).ToArray();
foreach (var album in albums)
{
var info = new AlbumInfo
{
Name = album.Name,
ProviderType = provider.GetType(),
IsSystemAlbum = typeof(SystemAlbumProvider) == provider.GetType(),
DisplayHint = provider.GetDisplayHint(album) ?? new AlbumDisplayHint()
};
if (provider is IMediaTrackDetector detector)
{
var propertyTable = new TrackedMediaPropertyTable(album.Name);
detector.ConfigureTracks(album.Name, propertyTable);
info.IsTrackDetector = true;
info.TrackedProperties = propertyTable.GetProperties();
}
if (dbAlbums.TryGetValue(album.Name, out var dbAlbum))
{
info.Id = dbAlbum.Id;
}
else
{
setFolders.Add(album);
_dbContext.SaveChanges();
info.Id = album.Id;
}
yield return(info);
}
}
}
public AlbumFileSystemAdapter(
AlbumInfo album,
IMediaService mediaService,
IFolderService folderService,
IMediaStorageProvider storageProvider)
{
_mediaService = mediaService;
_folderService = folderService;
_storageProvider = storageProvider;
Album = album;
Node = _folderService.GetNodeById(album.Id);
_rootPath = Node.Value.Path;
}