public Models.PlayList GetPlayListById(long?id)
{
if (id == null)
{
throw new ArgumentNullException(paramName: $" Invalid PlayList id ");
}
return(_playLists.GetPlayLists().FirstOrDefault(predicate: m => m.Id == id));
}
public async Task AddTrackByPlaylistIdAsync(Models.Track track, long playlistId)
{
await _track.AddTrackAsync(track);
var currentPlayList = await _playLists.GetPlayLists().FirstOrDefaultAsync(p => p.Id == playlistId);
var trackPlayList = new TrackPlayList {
Track = track, PlayList = currentPlayList
};
await _trackPlayList.AddAsync(trackPlayList);
}