BB.UI.Web.MVC.Controllers.Web_API.PlaylistController.getLivePlaylist C# (CSharp) Method

        public IHttpActionResult getLivePlaylist(long id)
        {
            var userIdentity = RequestContext.Principal.Identity as ClaimsIdentity;
            if (userIdentity == null) return NotFound();

            var email = userIdentity.Claims.First(c => c.Type == "sub").Value;
            if (email == null) return NotFound();

            var playlist = playlistManager.ReadPlaylist(id);
            if (playlist == null) return NotFound();

            List<LivePlaylistTrackViewModel> livePlaylistTracks = new List<LivePlaylistTrackViewModel>();
            foreach (var playlistTrack in playlist.PlaylistTracks.Where(t => t.PlayedAt == null))
            {
                var score = playlistTrack.Votes.FirstOrDefault(v => v.User.Email == email)?.Score;
                livePlaylistTracks.Add(new LivePlaylistTrackViewModel()
                {
                    Id = playlistTrack.Id,
                    Track = playlistTrack.Track,
                    Score = playlistTrack.Votes.Sum(v => v.Score),
                    PersonalScore = score ?? 0
                });
            }
            livePlaylistTracks.Sort((t1, t2) => t2.Score - t1.Score);

            var livePlaylist = new LivePlaylistViewModel()
            {
                Id = playlist.Id,
                PlaylistTracks = livePlaylistTracks,
                Active = playlist.Active,
                ChatComments = playlist.ChatComments,
                Comments = playlist.Comments,
                CreatedById = playlist.CreatedById,
                Description = playlist.Description,
                ImageUrl = playlist.ImageUrl,
                Key = playlist.Key,
                MaximumVotesPerUser = playlist.MaximumVotesPerUser,
                PlaylistMasterId = playlist.PlaylistMasterId,
                Name = playlist.Name
            };

            return Ok(livePlaylist);
        }