mirror of
https://github.com/jellyfin/jellyfin.git
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216 lines
6.9 KiB
C#
216 lines
6.9 KiB
C#
using MediaBrowser.Controller.IO;
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using MediaBrowser.Controller.Library;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.Serialization;
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using System.Threading;
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using System.Threading.Tasks;
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using CommonIO;
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using MediaBrowser.Controller.Providers;
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namespace MediaBrowser.Controller.Entities
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{
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/// <summary>
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/// Specialized folder that can have items added to it's children by external entities.
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/// Used for our RootFolder so plug-ins can add items.
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/// </summary>
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public class AggregateFolder : Folder
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{
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public AggregateFolder()
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{
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PhysicalLocationsList = new List<string>();
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}
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/// <summary>
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/// We don't support manual shortcuts
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/// </summary>
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protected override bool SupportsShortcutChildren
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{
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get
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{
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return false;
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}
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}
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public override bool CanDelete()
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{
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return false;
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}
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/// <summary>
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/// The _virtual children
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/// </summary>
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private readonly ConcurrentBag<BaseItem> _virtualChildren = new ConcurrentBag<BaseItem>();
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/// <summary>
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/// Gets the virtual children.
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/// </summary>
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/// <value>The virtual children.</value>
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public ConcurrentBag<BaseItem> VirtualChildren
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{
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get { return _virtualChildren; }
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}
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[IgnoreDataMember]
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public override IEnumerable<string> PhysicalLocations
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{
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get
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{
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return PhysicalLocationsList;
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}
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}
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public List<string> PhysicalLocationsList { get; set; }
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protected override IEnumerable<FileSystemMetadata> GetFileSystemChildren(IDirectoryService directoryService)
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{
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return CreateResolveArgs(directoryService, true).FileSystemChildren;
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}
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private List<Guid> _childrenIds = null;
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private readonly object _childIdsLock = new object();
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protected override IEnumerable<BaseItem> LoadChildren()
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{
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lock (_childIdsLock)
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{
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if (_childrenIds == null || _childrenIds.Count == 0)
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{
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var list = base.LoadChildren().ToList();
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_childrenIds = list.Select(i => i.Id).ToList();
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return list;
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}
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return _childrenIds.Select(LibraryManager.GetItemById).Where(i => i != null).ToList();
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}
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}
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private void ClearCache()
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{
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lock (_childIdsLock)
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{
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_childrenIds = null;
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}
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}
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private bool _requiresRefresh;
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public override bool RequiresRefresh()
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{
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var changed = base.RequiresRefresh() || _requiresRefresh;
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if (!changed)
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{
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var locations = PhysicalLocations.ToList();
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var newLocations = CreateResolveArgs(new DirectoryService(Logger, FileSystem), false).PhysicalLocations.ToList();
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if (!locations.SequenceEqual(newLocations))
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{
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changed = true;
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}
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}
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return changed;
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}
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public override bool BeforeMetadataRefresh()
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{
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ClearCache();
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var changed = base.BeforeMetadataRefresh() || _requiresRefresh;
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_requiresRefresh = false;
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return changed;
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}
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private ItemResolveArgs CreateResolveArgs(IDirectoryService directoryService, bool setPhysicalLocations)
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{
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ClearCache();
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var path = ContainingFolderPath;
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var args = new ItemResolveArgs(ConfigurationManager.ApplicationPaths, directoryService)
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{
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FileInfo = FileSystem.GetDirectoryInfo(path),
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Path = path,
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Parent = Parent
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};
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// Gather child folder and files
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if (args.IsDirectory)
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{
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var isPhysicalRoot = args.IsPhysicalRoot;
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// When resolving the root, we need it's grandchildren (children of user views)
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var flattenFolderDepth = isPhysicalRoot ? 2 : 0;
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var fileSystemDictionary = FileData.GetFilteredFileSystemEntries(directoryService, args.Path, FileSystem, Logger, args, flattenFolderDepth: flattenFolderDepth, resolveShortcuts: isPhysicalRoot || args.IsVf);
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// Need to remove subpaths that may have been resolved from shortcuts
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// Example: if \\server\movies exists, then strip out \\server\movies\action
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if (isPhysicalRoot)
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{
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var paths = LibraryManager.NormalizeRootPathList(fileSystemDictionary.Values);
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fileSystemDictionary = paths.ToDictionary(i => i.FullName);
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}
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args.FileSystemDictionary = fileSystemDictionary;
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}
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_requiresRefresh = _requiresRefresh || !args.PhysicalLocations.SequenceEqual(PhysicalLocations);
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if (setPhysicalLocations)
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{
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PhysicalLocationsList = args.PhysicalLocations.ToList();
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}
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return args;
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}
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protected override IEnumerable<BaseItem> GetNonCachedChildren(IDirectoryService directoryService)
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{
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return base.GetNonCachedChildren(directoryService).Concat(_virtualChildren);
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}
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protected override async Task ValidateChildrenInternal(IProgress<double> progress, CancellationToken cancellationToken, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService)
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{
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ClearCache();
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await base.ValidateChildrenInternal(progress, cancellationToken, recursive, refreshChildMetadata, refreshOptions, directoryService)
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.ConfigureAwait(false);
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ClearCache();
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}
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/// <summary>
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/// Adds the virtual child.
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/// </summary>
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/// <param name="child">The child.</param>
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/// <exception cref="System.ArgumentNullException"></exception>
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public void AddVirtualChild(BaseItem child)
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{
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if (child == null)
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{
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throw new ArgumentNullException();
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}
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_virtualChildren.Add(child);
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}
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/// <summary>
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/// Finds the virtual child.
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/// </summary>
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/// <param name="id">The id.</param>
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/// <returns>BaseItem.</returns>
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/// <exception cref="System.ArgumentNullException">id</exception>
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public BaseItem FindVirtualChild(Guid id)
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{
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if (id == Guid.Empty)
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{
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throw new ArgumentNullException("id");
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}
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return _virtualChildren.FirstOrDefault(i => i.Id == id);
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}
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}
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}
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