jellyfin/MediaBrowser.Controller/Entities/CollectionFolder.cs

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C#
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using MediaBrowser.Controller.IO;
using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Providers;
using System;
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using System.Collections.Generic;
using System.Linq;
using System.Runtime.Serialization;
using System.Threading;
using System.Threading.Tasks;
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using CommonIO;
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using MoreLinq;
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namespace MediaBrowser.Controller.Entities
{
/// <summary>
/// Specialized Folder class that points to a subset of the physical folders in the system.
/// It is created from the user-specific folders within the system root
/// </summary>
public class CollectionFolder : Folder, ICollectionFolder
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{
public CollectionFolder()
{
PhysicalLocationsList = new List<string>();
}
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/// <summary>
/// Gets a value indicating whether this instance is virtual folder.
/// </summary>
/// <value><c>true</c> if this instance is virtual folder; otherwise, <c>false</c>.</value>
[IgnoreDataMember]
public override bool IsVirtualFolder
{
get
{
return true;
}
}
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[IgnoreDataMember]
protected override bool SupportsShortcutChildren
{
get
{
return true;
}
}
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public override bool CanDelete()
{
return false;
}
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public string CollectionType { get; set; }
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/// <summary>
/// Allow different display preferences for each collection folder
/// </summary>
/// <value>The display prefs id.</value>
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[IgnoreDataMember]
public override Guid DisplayPreferencesId
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{
get
{
return Id;
}
}
[IgnoreDataMember]
public override IEnumerable<string> PhysicalLocations
{
get
{
return PhysicalLocationsList;
}
}
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public override bool IsSaveLocalMetadataEnabled()
{
return true;
}
public List<string> PhysicalLocationsList { get; set; }
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protected override IEnumerable<FileSystemMetadata> GetFileSystemChildren(IDirectoryService directoryService)
{
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return CreateResolveArgs(directoryService).FileSystemChildren;
}
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internal override bool IsValidFromResolver(BaseItem newItem)
{
var newCollectionFolder = newItem as CollectionFolder;
if (newCollectionFolder != null)
{
if (!string.Equals(CollectionType, newCollectionFolder.CollectionType, StringComparison.OrdinalIgnoreCase))
{
return false;
}
}
return base.IsValidFromResolver(newItem);
}
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private ItemResolveArgs CreateResolveArgs(IDirectoryService directoryService)
{
var path = ContainingFolderPath;
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var args = new ItemResolveArgs(ConfigurationManager.ApplicationPaths, directoryService)
{
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FileInfo = FileSystem.GetDirectoryInfo(path),
Path = path,
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Parent = Parent,
CollectionType = CollectionType
};
// Gather child folder and files
if (args.IsDirectory)
{
var isPhysicalRoot = args.IsPhysicalRoot;
// When resolving the root, we need it's grandchildren (children of user views)
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);
// Need to remove subpaths that may have been resolved from shortcuts
// Example: if \\server\movies exists, then strip out \\server\movies\action
if (isPhysicalRoot)
{
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var paths = LibraryManager.NormalizeRootPathList(fileSystemDictionary.Values);
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fileSystemDictionary = paths.ToDictionary(i => i.FullName);
}
args.FileSystemDictionary = fileSystemDictionary;
}
PhysicalLocationsList = args.PhysicalLocations.ToList();
return args;
}
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/// <summary>
/// Compare our current children (presumably just read from the repo) with the current state of the file system and adjust for any changes
/// ***Currently does not contain logic to maintain items that are unavailable in the file system***
/// </summary>
/// <param name="progress">The progress.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="recursive">if set to <c>true</c> [recursive].</param>
/// <param name="refreshChildMetadata">if set to <c>true</c> [refresh child metadata].</param>
/// <param name="refreshOptions">The refresh options.</param>
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/// <param name="directoryService">The directory service.</param>
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/// <returns>Task.</returns>
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protected override Task ValidateChildrenInternal(IProgress<double> progress, CancellationToken cancellationToken, bool recursive, bool refreshChildMetadata, MetadataRefreshOptions refreshOptions, IDirectoryService directoryService)
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{
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var list = PhysicalLocationsList.ToList();
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CreateResolveArgs(directoryService);
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if (!list.SequenceEqual(PhysicalLocationsList))
{
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return UpdateToRepository(ItemUpdateType.MetadataImport, cancellationToken);
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}
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return Task.FromResult(true);
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}
/// <summary>
/// Our children are actually just references to the ones in the physical root...
/// </summary>
/// <value>The linked children.</value>
public override List<LinkedChild> LinkedChildren
{
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get { return GetLinkedChildrenInternal(); }
set
{
base.LinkedChildren = value;
}
}
private List<LinkedChild> GetLinkedChildrenInternal()
{
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return GetPhysicalParents()
.SelectMany(c => c.LinkedChildren)
.ToList();
}
/// <summary>
/// Our children are actually just references to the ones in the physical root...
/// </summary>
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/// <value>The actual children.</value>
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protected override IEnumerable<BaseItem> ActualChildren
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{
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get { return GetActualChildren(); }
}
private IEnumerable<BaseItem> GetActualChildren()
{
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return GetPhysicalParents().SelectMany(c => c.Children);
}
public IEnumerable<Folder> GetPhysicalParents()
{
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var rootChildren = LibraryManager.RootFolder.Children
.OfType<Folder>()
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.ToList();
return PhysicalLocations.Where(i => !string.Equals(i, Path, StringComparison.OrdinalIgnoreCase)).SelectMany(i => GetPhysicalParents(i, rootChildren)).DistinctBy(i => i.Id);
}
private IEnumerable<Folder> GetPhysicalParents(string path, List<Folder> rootChildren)
{
var result = rootChildren
.Where(i => string.Equals(i.Path, path, StringComparison.OrdinalIgnoreCase))
.ToList();
if (result.Count == 0)
{
var folder = LibraryManager.FindByPath(path, true) as Folder;
if (folder != null)
{
result.Add(folder);
}
}
return result;
}
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[IgnoreDataMember]
public override bool SupportsPeople
{
get
{
return false;
}
}
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}
}