199 lines
6.6 KiB
C#
199 lines
6.6 KiB
C#
using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.Configuration;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.IO;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Model.Logging;
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using System;
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using System.IO;
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using System.Linq;
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using System.Threading;
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using System.Threading.Tasks;
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namespace MediaBrowser.Providers
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{
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/// <summary>
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/// Provides images for generic types by looking for standard images in the IBN
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/// </summary>
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public class ImagesByNameProvider : ImageFromMediaLocationProvider
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{
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private readonly IFileSystem _fileSystem;
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public ImagesByNameProvider(ILogManager logManager, IServerConfigurationManager configurationManager, IFileSystem fileSystem)
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: base(logManager, configurationManager)
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{
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_fileSystem = fileSystem;
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}
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public override ItemUpdateType ItemUpdateType
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{
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get
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{
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return ItemUpdateType.ImageUpdate;
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}
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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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//only run for these generic types since we are expensive in file i/o
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return item is IndexFolder || item is BasePluginFolder || item is CollectionFolder;
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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
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{
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return MetadataProviderPriority.Last;
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}
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}
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/// <summary>
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/// Needses the refresh internal.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="providerInfo">The provider info.</param>
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/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
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protected override bool NeedsRefreshInternal(BaseItem item, BaseProviderInfo providerInfo)
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{
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// Force a refresh if the IBN path changed
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if (providerInfo.FileStamp != ConfigurationManager.ApplicationPaths.ItemsByNamePath.GetMD5())
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{
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return true;
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}
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return base.NeedsRefreshInternal(item, providerInfo);
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}
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/// <summary>
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/// Gets a value indicating whether [refresh on file system stamp change].
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/// </summary>
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/// <value><c>true</c> if [refresh on file system stamp change]; otherwise, <c>false</c>.</value>
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protected override bool RefreshOnFileSystemStampChange
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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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/// <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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// If the IBN location exists return the last modified date of any file in it
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var location = GetLocation(item);
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var directoryInfo = new DirectoryInfo(location);
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if (!directoryInfo.Exists)
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{
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return DateTime.MinValue;
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}
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var files = directoryInfo.EnumerateFiles().ToList();
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if (files.Count == 0)
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{
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return DateTime.MinValue;
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}
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return files.Select(f =>
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{
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var lastWriteTime = FileSystem.GetLastWriteTimeUtc(f, Logger);
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var creationTime = FileSystem.GetCreationTimeUtc(f, Logger);
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return creationTime > lastWriteTime ? creationTime : lastWriteTime;
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}).Max();
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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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public override async Task<bool> FetchAsync(BaseItem item, bool force, CancellationToken cancellationToken)
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{
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var result = await base.FetchAsync(item, force, cancellationToken).ConfigureAwait(false);
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BaseProviderInfo data;
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if (!item.ProviderData.TryGetValue(Id, out data))
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{
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data = new BaseProviderInfo();
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item.ProviderData[Id] = data;
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}
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data.FileStamp = ConfigurationManager.ApplicationPaths.ItemsByNamePath.GetMD5();
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SetLastRefreshed(item, DateTime.UtcNow);
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return result;
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}
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/// <summary>
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/// Gets the location.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <returns>System.String.</returns>
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protected string GetLocation(BaseItem item)
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{
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var name = _fileSystem.GetValidFilename(item.Name);
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return Path.Combine(ConfigurationManager.ApplicationPaths.GeneralPath, name);
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}
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/// <summary>
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/// Gets the image.
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/// </summary>
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/// <param name="item">The item.</param>
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/// <param name="args">The args.</param>
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/// <param name="filenameWithoutExtension">The filename without extension.</param>
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/// <returns>FileSystemInfo.</returns>
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protected override FileSystemInfo GetImage(BaseItem item, ItemResolveArgs args, string filenameWithoutExtension)
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{
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var location = GetLocation(item);
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var directoryInfo = new DirectoryInfo(location);
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if (!directoryInfo.Exists)
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{
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return null;
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}
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var files = directoryInfo.EnumerateFiles("*", SearchOption.TopDirectoryOnly).ToList();
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var file = files.FirstOrDefault(i => string.Equals(i.Name, filenameWithoutExtension + ".png", StringComparison.OrdinalIgnoreCase));
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if (file != null)
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{
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return file;
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}
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file = files.FirstOrDefault(i => string.Equals(i.Name, filenameWithoutExtension + ".jpg", StringComparison.OrdinalIgnoreCase));
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if (file != null)
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{
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return file;
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}
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return null;
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}
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}
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}
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