84 lines
3.2 KiB
C#
84 lines
3.2 KiB
C#
using MediaBrowser.Controller.Entities;
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using MediaBrowser.Model.Entities;
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using System;
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using System.ComponentModel.Composition;
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using System.IO;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Controller.Providers
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{
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/// <summary>
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/// Provides metadata for Folders and all subclasses by parsing folder.xml
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/// </summary>
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[Export(typeof(BaseMetadataProvider))]
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public class FolderProviderFromXml : BaseMetadataProvider
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{
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/// <summary>
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/// Supportses the specified item.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
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public override bool Supports(BaseItem item)
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{
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return item is Folder && item.LocationType == LocationType.FileSystem;
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}
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/// <summary>
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/// Gets the priority.
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/// </summary>
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/// <value>The priority.</value>
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public override MetadataProviderPriority Priority
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{
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get { return MetadataProviderPriority.First; }
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}
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/// <summary>
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/// Override this to return the date that should be compared to the last refresh date
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/// to determine if this provider should be re-fetched.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <returns>DateTime.</returns>
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protected override DateTime CompareDate(BaseItem item)
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{
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var entry = item.MetaLocation != null ? item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, "folder.xml")) : null;
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return entry != null ? entry.Value.LastWriteTimeUtc : DateTime.MinValue;
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}
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/// <summary>
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/// Fetches metadata and returns true or false indicating if any work that requires persistence was done
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="force">if set to <c>true</c> [force].</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>Task{System.Boolean}.</returns>
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protected override Task<bool> FetchAsyncInternal(BaseItem item, bool force, CancellationToken cancellationToken)
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{
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return Task.Run(() => Fetch(item, cancellationToken));
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}
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/// <summary>
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/// Fetches the specified item.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
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private bool Fetch(BaseItem item, CancellationToken cancellationToken)
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{
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cancellationToken.ThrowIfCancellationRequested();
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var metadataFile = item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, "folder.xml"));
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if (metadataFile.HasValue)
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{
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var path = metadataFile.Value.Path;
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new BaseItemXmlParser<Folder>().Fetch((Folder)item, path, cancellationToken);
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SetLastRefreshed(item, DateTime.UtcNow);
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return true;
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}
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return false;
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}
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}
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}
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