429 lines
15 KiB
C#
429 lines
15 KiB
C#
using MediaBrowser.Controller.Dto;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Querying;
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using ServiceStack;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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namespace MediaBrowser.Api.UserLibrary
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{
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/// <summary>
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/// Class BaseItemsByNameService
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/// </summary>
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/// <typeparam name="TItemType">The type of the T item type.</typeparam>
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public abstract class BaseItemsByNameService<TItemType> : BaseApiService
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where TItemType : BaseItem, IItemByName
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{
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/// <summary>
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/// The _user manager
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/// </summary>
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protected readonly IUserManager UserManager;
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/// <summary>
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/// The library manager
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/// </summary>
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protected readonly ILibraryManager LibraryManager;
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protected readonly IUserDataManager UserDataRepository;
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protected readonly IItemRepository ItemRepository;
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protected IDtoService DtoService { get; private set; }
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/// <summary>
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/// Initializes a new instance of the <see cref="BaseItemsByNameService{TItemType}" /> class.
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/// </summary>
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/// <param name="userManager">The user manager.</param>
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/// <param name="libraryManager">The library manager.</param>
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/// <param name="userDataRepository">The user data repository.</param>
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/// <param name="itemRepository">The item repository.</param>
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/// <param name="dtoService">The dto service.</param>
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protected BaseItemsByNameService(IUserManager userManager, ILibraryManager libraryManager, IUserDataManager userDataRepository, IItemRepository itemRepository, IDtoService dtoService)
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{
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UserManager = userManager;
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LibraryManager = libraryManager;
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UserDataRepository = userDataRepository;
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ItemRepository = itemRepository;
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DtoService = dtoService;
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}
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protected BaseItem GetParentItem(GetItemsByName request)
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{
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BaseItem parentItem;
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if (!string.IsNullOrWhiteSpace(request.UserId))
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{
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var user = UserManager.GetUserById(request.UserId);
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parentItem = string.IsNullOrEmpty(request.ParentId) ? user.RootFolder : LibraryManager.GetItemById(request.ParentId);
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}
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else
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{
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parentItem = string.IsNullOrEmpty(request.ParentId) ? LibraryManager.RootFolder : LibraryManager.GetItemById(request.ParentId);
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}
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return parentItem;
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}
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protected string GetParentItemViewType(GetItemsByName request)
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{
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var parent = GetParentItem(request);
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var collectionFolder = parent as ICollectionFolder;
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if (collectionFolder != null)
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{
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return collectionFolder.CollectionType;
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}
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var view = parent as UserView;
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if (view != null)
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{
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return view.ViewType;
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}
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return null;
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}
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/// <summary>
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/// Gets the specified request.
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/// </summary>
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/// <param name="request">The request.</param>
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/// <returns>Task{ItemsResult}.</returns>
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protected ItemsResult GetResult(GetItemsByName request)
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{
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var dtoOptions = GetDtoOptions(request);
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User user = null;
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BaseItem parentItem;
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List<BaseItem> libraryItems = null;
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if (!string.IsNullOrWhiteSpace(request.UserId))
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{
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user = UserManager.GetUserById(request.UserId);
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parentItem = string.IsNullOrEmpty(request.ParentId) ? user.RootFolder : LibraryManager.GetItemById(request.ParentId);
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if (RequiresLibraryItems(request, dtoOptions))
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{
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libraryItems = user.RootFolder.GetRecursiveChildren(user).ToList();
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}
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}
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else
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{
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parentItem = string.IsNullOrEmpty(request.ParentId) ? LibraryManager.RootFolder : LibraryManager.GetItemById(request.ParentId);
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if (RequiresLibraryItems(request, dtoOptions))
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{
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libraryItems = LibraryManager.RootFolder.GetRecursiveChildren().ToList();
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}
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}
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IEnumerable<BaseItem> items;
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var excludeItemTypes = request.GetExcludeItemTypes();
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var includeItemTypes = request.GetIncludeItemTypes();
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var mediaTypes = request.GetMediaTypes();
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var query = new InternalItemsQuery(user)
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{
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ExcludeItemTypes = excludeItemTypes,
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IncludeItemTypes = includeItemTypes,
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MediaTypes = mediaTypes
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};
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Func<BaseItem, bool> filter = i => FilterItem(request, i, excludeItemTypes, includeItemTypes, mediaTypes);
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if (parentItem.IsFolder)
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{
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var folder = (Folder)parentItem;
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if (!string.IsNullOrWhiteSpace(request.UserId))
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{
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items = request.Recursive ?
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folder.GetRecursiveChildren(user, query) :
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folder.GetChildren(user, true).Where(filter);
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}
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else
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{
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items = request.Recursive ?
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folder.GetRecursiveChildren(filter) :
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folder.Children.Where(filter);
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}
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}
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else
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{
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items = new[] { parentItem }.Where(filter);
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}
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var extractedItems = GetAllItems(request, items);
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var filteredItems = FilterItems(request, extractedItems, user);
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filteredItems = FilterByLibraryItems(request, filteredItems.Cast<IItemByName>(), user, libraryItems).Cast<BaseItem>();
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filteredItems = LibraryManager.Sort(filteredItems, user, request.GetOrderBy(), request.SortOrder ?? SortOrder.Ascending);
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var ibnItemsArray = filteredItems.ToList();
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IEnumerable<BaseItem> ibnItems = ibnItemsArray;
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var result = new ItemsResult
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{
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TotalRecordCount = ibnItemsArray.Count
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};
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if (request.StartIndex.HasValue || request.Limit.HasValue)
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{
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if (request.StartIndex.HasValue)
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{
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ibnItems = ibnItems.Skip(request.StartIndex.Value);
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}
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if (request.Limit.HasValue)
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{
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ibnItems = ibnItems.Take(request.Limit.Value);
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}
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}
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IEnumerable<Tuple<BaseItem, List<BaseItem>>> tuples;
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if (dtoOptions.Fields.Contains(ItemFields.ItemCounts))
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{
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tuples = ibnItems.Select(i => new Tuple<BaseItem, List<BaseItem>>(i, ((IItemByName)i).GetTaggedItems(libraryItems).ToList()));
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}
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else
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{
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tuples = ibnItems.Select(i => new Tuple<BaseItem, List<BaseItem>>(i, new List<BaseItem>()));
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}
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var dtos = tuples.Select(i => DtoService.GetItemByNameDto(i.Item1, dtoOptions, i.Item2, user));
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result.Items = dtos.Where(i => i != null).ToArray();
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return result;
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}
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private bool RequiresLibraryItems(GetItemsByName request, DtoOptions options)
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{
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var filters = request.GetFilters().ToList();
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if (filters.Contains(ItemFilter.IsPlayed))
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{
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return true;
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}
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if (filters.Contains(ItemFilter.IsUnplayed))
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{
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return true;
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}
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if (request.IsPlayed.HasValue)
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{
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return true;
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}
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return options.Fields.Contains(ItemFields.ItemCounts);
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}
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private IEnumerable<IItemByName> FilterByLibraryItems(GetItemsByName request, IEnumerable<IItemByName> items, User user, IEnumerable<BaseItem> libraryItems)
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{
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var filters = request.GetFilters().ToList();
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if (filters.Contains(ItemFilter.IsPlayed))
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{
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items = items.Where(i => i.GetTaggedItems(libraryItems).All(l => l.IsPlayed(user)));
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}
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if (filters.Contains(ItemFilter.IsUnplayed))
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{
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items = items.Where(i => i.GetTaggedItems(libraryItems).All(l => l.IsUnplayed(user)));
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}
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if (request.IsPlayed.HasValue)
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{
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var val = request.IsPlayed.Value;
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items = items.Where(i => i.GetTaggedItems(libraryItems).All(l => l.IsPlayed(user)) == val);
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}
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return items;
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}
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/// <summary>
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/// Filters the items.
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/// </summary>
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/// <param name="request">The request.</param>
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/// <param name="items">The items.</param>
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/// <param name="user">The user.</param>
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/// <returns>IEnumerable{`0}.</returns>
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private IEnumerable<BaseItem> FilterItems(GetItemsByName request, IEnumerable<BaseItem> items, User user)
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{
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if (!string.IsNullOrEmpty(request.NameStartsWithOrGreater))
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{
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items = items.Where(i => string.Compare(request.NameStartsWithOrGreater, i.SortName, StringComparison.CurrentCultureIgnoreCase) < 1);
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}
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if (!string.IsNullOrEmpty(request.NameStartsWith))
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{
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items = items.Where(i => string.Compare(request.NameStartsWith, i.SortName.Substring(0, 1), StringComparison.CurrentCultureIgnoreCase) == 0);
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}
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if (!string.IsNullOrEmpty(request.NameLessThan))
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{
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items = items.Where(i => string.Compare(request.NameLessThan, i.SortName, StringComparison.CurrentCultureIgnoreCase) == 1);
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}
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var imageTypes = request.GetImageTypes().ToList();
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if (imageTypes.Count > 0)
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{
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items = items.Where(item => imageTypes.Any(item.HasImage));
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}
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var filters = request.GetFilters().ToList();
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if (filters.Contains(ItemFilter.Dislikes))
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{
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items = items.Where(i =>
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{
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var userdata = UserDataRepository.GetUserData(user, i);
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return userdata != null && userdata.Likes.HasValue && !userdata.Likes.Value;
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});
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}
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if (filters.Contains(ItemFilter.Likes))
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{
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items = items.Where(i =>
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{
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var userdata = UserDataRepository.GetUserData(user, i);
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return userdata != null && userdata.Likes.HasValue && userdata.Likes.Value;
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});
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}
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if (filters.Contains(ItemFilter.IsFavoriteOrLikes))
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{
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items = items.Where(i =>
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{
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var userdata = UserDataRepository.GetUserData(user, i);
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var likes = userdata.Likes ?? false;
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var favorite = userdata.IsFavorite;
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return likes || favorite;
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});
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}
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if (filters.Contains(ItemFilter.IsFavorite))
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{
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items = items.Where(i =>
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{
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var userdata = UserDataRepository.GetUserData(user, i);
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return userdata != null && userdata.IsFavorite;
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});
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}
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// Avoid implicitly captured closure
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var currentRequest = request;
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return items.Where(i => ApplyAdditionalFilters(currentRequest, i, user, false));
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}
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private bool ApplyAdditionalFilters(BaseItemsRequest request, BaseItem i, User user, bool isPreFiltered)
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{
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if (!isPreFiltered)
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{
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// Apply tag filter
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var tags = request.GetTags();
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if (tags.Length > 0)
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{
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if (!tags.Any(v => i.Tags.Contains(v, StringComparer.OrdinalIgnoreCase)))
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{
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return false;
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}
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}
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// Apply official rating filter
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var officialRatings = request.GetOfficialRatings();
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if (officialRatings.Length > 0 && !officialRatings.Contains(i.OfficialRating ?? string.Empty))
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{
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return false;
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}
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// Apply genre filter
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var genres = request.GetGenres();
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if (genres.Length > 0 && !genres.Any(v => i.Genres.Contains(v, StringComparer.OrdinalIgnoreCase)))
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{
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return false;
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}
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// Apply year filter
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var years = request.GetYears();
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if (years.Length > 0 && !(i.ProductionYear.HasValue && years.Contains(i.ProductionYear.Value)))
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{
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return false;
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}
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}
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return true;
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}
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/// <summary>
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/// Filters the items.
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/// </summary>
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/// <param name="request">The request.</param>
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/// <param name="f">The f.</param>
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/// <param name="excludeItemTypes">The exclude item types.</param>
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/// <param name="includeItemTypes">The include item types.</param>
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/// <param name="mediaTypes">The media types.</param>
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/// <returns>IEnumerable{BaseItem}.</returns>
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protected bool FilterItem(GetItemsByName request, BaseItem f, string[] excludeItemTypes, string[] includeItemTypes, string[] mediaTypes)
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{
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// Exclude item types
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if (excludeItemTypes.Length > 0)
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{
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if (excludeItemTypes.Contains(f.GetType().Name, StringComparer.OrdinalIgnoreCase))
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{
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return false;
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}
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}
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// Include item types
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if (includeItemTypes.Length > 0)
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{
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if (!includeItemTypes.Contains(f.GetType().Name, StringComparer.OrdinalIgnoreCase))
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{
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return false;
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}
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}
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// Include MediaTypes
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if (mediaTypes.Length > 0)
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{
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if (!mediaTypes.Contains(f.MediaType ?? string.Empty, StringComparer.OrdinalIgnoreCase))
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{
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return false;
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}
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}
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return true;
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}
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/// <summary>
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/// Gets all items.
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/// </summary>
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/// <param name="request">The request.</param>
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/// <param name="items">The items.</param>
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/// <returns>IEnumerable{Task{`0}}.</returns>
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protected abstract IEnumerable<BaseItem> GetAllItems(GetItemsByName request, IEnumerable<BaseItem> items);
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}
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/// <summary>
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/// Class GetItemsByName
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/// </summary>
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public class GetItemsByName : BaseItemsRequest, IReturn<ItemsResult>
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{
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public GetItemsByName()
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{
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Recursive = true;
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}
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}
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}
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