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using MediaBrowser.Common.IO;
using MediaBrowser.Controller.Configuration;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Logging;
using System;
using System.IO;
using System.Threading;
using System.Threading.Tasks;
namespace MediaBrowser.Providers.LiveTv
{
class ChannelProviderFromXml : BaseMetadataProvider
{
private readonly IFileSystem _fileSystem;
public ChannelProviderFromXml(ILogManager logManager, IServerConfigurationManager configurationManager, IFileSystem fileSystem)
: base(logManager, configurationManager)
{
_fileSystem = fileSystem;
}
/// <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)
{
return item is Channel;
}
/// <summary>
/// Gets the priority.
/// </summary>
/// <value>The priority.</value>
public override MetadataProviderPriority Priority
{
get { return MetadataProviderPriority.Second; }
}
private const string XmlFileName = "channel.xml";
protected override bool NeedsRefreshBasedOnCompareDate(BaseItem item, BaseProviderInfo providerInfo)
{
var xml = item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, XmlFileName));
if (xml == null)
{
return false;
}
return _fileSystem.GetLastWriteTimeUtc(xml) > item.DateLastSaved;
}
/// <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, BaseProviderInfo providerInfo, CancellationToken cancellationToken)
{
cancellationToken.ThrowIfCancellationRequested();
var metadataFile = item.ResolveArgs.GetMetaFileByPath(Path.Combine(item.MetaLocation, XmlFileName));
if (metadataFile != null)
{
var path = metadataFile.FullName;
await XmlParsingResourcePool.WaitAsync(cancellationToken).ConfigureAwait(false);
try
{
new BaseItemXmlParser<Channel>(Logger).Fetch((Channel)item, path, cancellationToken);
}
finally
{
XmlParsingResourcePool.Release();
}
SetLastRefreshed(item, DateTime.UtcNow, providerInfo);
return true;
}
return false;
}
}
}
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