public WebAPI.DTO.IPagedResponse <FavoriteDTO> GetFavorites(int page, SortState sortOrder) { int pageSize = 8; var favorites = favoriteRepository.GetAllFavorites(); var count = favorites.Count(); var pageNumber = (int)Math.Ceiling(count / (double)pageSize); var favoriteSerial = mapper.Map <IEnumerable <FavoriteDTO> >(favorites.Where(s => s.ContentType == ContentType.Serial).Select(i => (_serialRepository.GetSerialById(i.ContentId)))); var favoriteMovie = mapper.Map <IEnumerable <FavoriteDTO> >(favorites.Where(s => s.ContentType == ContentType.Movie).Select(i => (_movieRepository.GetMovieById(i.ContentId)))); IEnumerable <FavoriteDTO> union = favoriteSerial.Union(favoriteMovie); union = sortOrder switch { SortState.NameDesc => union.OrderByDescending(s => s.Name), SortState.RatingAsc => union.OrderBy(s => s.Rating), SortState.RatingDesc => union.OrderByDescending(s => s.Rating), SortState.YearAsc => union.OrderBy(s => s.Year), SortState.YearDesc => union.OrderByDescending(s => s.Year), _ => union.OrderBy(s => s.Name), }; var items = union.Skip((page - 1) * pageSize).Take(pageSize).ToList(); WebAPI.DTO.IPagedResponse <FavoriteDTO> pagedResponse = new WebAPI.DTO.IPagedResponse <FavoriteDTO> { PageNumber = pageNumber, PageSize = pageSize, TotalCount = count, Data = items }; return(pagedResponse); }