private async Task <ItemsResult> GetInstantMixResult(BaseGetSimilarItems request, IEnumerable <string> genres) { var user = request.UserId.HasValue ? _userManager.GetUserById(request.UserId.Value) : null; var fields = request.GetItemFields().ToList(); var dtoBuilder = new DtoBuilder(Logger, _libraryManager, _userDataRepository, _itemRepo); var inputItems = user == null ? _libraryManager.RootFolder.RecursiveChildren : user.RootFolder.GetRecursiveChildren(user); var genresDictionary = genres.ToDictionary(i => i, StringComparer.OrdinalIgnoreCase); var limit = request.Limit.HasValue ? request.Limit.Value * 2 : 100; var items = inputItems .OfType <Audio>() .Select(i => new Tuple <Audio, int>(i, i.Genres.Count(genresDictionary.ContainsKey))) .OrderByDescending(i => i.Item2) .ThenBy(i => Guid.NewGuid()) .Select(i => i.Item1) .Take(limit) .OrderBy(i => Guid.NewGuid()) .ToArray(); var result = new ItemsResult { TotalRecordCount = items.Length }; var tasks = items.Take(request.Limit ?? items.Length) .Select(i => dtoBuilder.GetBaseItemDto(i, fields, user)); result.Items = await Task.WhenAll(tasks).ConfigureAwait(false); return(result); }
private ItemsResult GetInstantMixResult(BaseGetSimilarItems request, IEnumerable <string> genres) { var user = request.UserId.HasValue ? _userManager.GetUserById(request.UserId.Value) : null; var fields = request.GetItemFields().ToList(); var inputItems = user == null ? _libraryManager.RootFolder.RecursiveChildren : user.RootFolder.GetRecursiveChildren(user); var genresDictionary = genres.ToDictionary(i => i, StringComparer.OrdinalIgnoreCase); var limit = request.Limit.HasValue ? request.Limit.Value * 2 : 100; var items = inputItems .OfType <Audio>() .Select(i => new Tuple <Audio, int>(i, i.Genres.Count(genresDictionary.ContainsKey))) .OrderByDescending(i => i.Item2) .ThenBy(i => Guid.NewGuid()) .Select(i => i.Item1) .Take(limit) .OrderBy(i => Guid.NewGuid()) .ToList(); var result = new ItemsResult { TotalRecordCount = items.Count }; var dtos = items.Take(request.Limit ?? items.Count) .Select(i => _dtoService.GetBaseItemDto(i, fields, user)); result.Items = dtos.ToArray(); return(result); }
/// <summary> /// Gets the similar items. /// </summary> /// <param name="userManager">The user manager.</param> /// <param name="itemRepository">The item repository.</param> /// <param name="libraryManager">The library manager.</param> /// <param name="userDataRepository">The user data repository.</param> /// <param name="logger">The logger.</param> /// <param name="request">The request.</param> /// <param name="includeInSearch">The include in search.</param> /// <param name="getSimilarityScore">The get similarity score.</param> /// <returns>ItemsResult.</returns> internal static ItemsResult GetSimilarItems(IUserManager userManager, IItemRepository itemRepository, ILibraryManager libraryManager, IUserDataRepository userDataRepository, ILogger logger, BaseGetSimilarItems request, Func <BaseItem, bool> includeInSearch, Func <BaseItem, BaseItem, int> getSimilarityScore) { var user = request.UserId.HasValue ? userManager.GetUserById(request.UserId.Value) : null; var item = string.IsNullOrEmpty(request.Id) ? (request.UserId.HasValue ? user.RootFolder : (Folder)libraryManager.RootFolder) : DtoBuilder.GetItemByClientId(request.Id, userManager, libraryManager, request.UserId); var fields = request.GetItemFields().ToList(); var dtoBuilder = new DtoBuilder(logger, libraryManager, userDataRepository, itemRepository); var inputItems = user == null ? libraryManager.RootFolder.RecursiveChildren : user.RootFolder.GetRecursiveChildren(user); var items = GetSimilaritems(item, inputItems, includeInSearch, getSimilarityScore).ToArray(); var result = new ItemsResult { Items = items.Take(request.Limit ?? items.Length).Select(i => dtoBuilder.GetBaseItemDto(i, fields, user)).Select(t => t.Result).ToArray(), TotalRecordCount = items.Length }; return(result); }