jellyfin-server/MediaBrowser.LocalMetadata/BaseXmlProvider.cs

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C#
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using System.IO;
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using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Providers;
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using MediaBrowser.Model.IO;
namespace MediaBrowser.LocalMetadata
{
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public abstract class BaseXmlProvider<T> : ILocalMetadataProvider<T>, IHasItemChangeMonitor, IHasOrder
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where T : BaseItem, new()
{
protected IFileSystem FileSystem;
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public Task<MetadataResult<T>> GetMetadata(ItemInfo info,
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IDirectoryService directoryService,
CancellationToken cancellationToken)
{
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var result = new MetadataResult<T>();
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var file = GetXmlFile(info, directoryService);
if (file == null)
{
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return Task.FromResult(result);
}
var path = file.FullName;
try
{
result.Item = new T();
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Fetch(result, path, cancellationToken);
result.HasMetadata = true;
}
catch (FileNotFoundException)
{
result.HasMetadata = false;
}
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catch (IOException)
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{
result.HasMetadata = false;
}
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return Task.FromResult(result);
}
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protected abstract void Fetch(MetadataResult<T> result, string path, CancellationToken cancellationToken);
protected BaseXmlProvider(IFileSystem fileSystem)
{
FileSystem = fileSystem;
}
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protected abstract FileSystemMetadata GetXmlFile(ItemInfo info, IDirectoryService directoryService);
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public bool HasChanged(BaseItem item, IDirectoryService directoryService)
{
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var file = GetXmlFile(new ItemInfo(item), directoryService);
if (file == null)
{
return false;
}
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return file.Exists && FileSystem.GetLastWriteTimeUtc(file) > item.DateLastSaved;
}
public string Name => XmlProviderUtils.Name;
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//After Nfo
public virtual int Order => 1;
}
static class XmlProviderUtils
{
public static string Name => "Emby Xml";
}
}