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