jellyfin/Emby.Server.Implementations/Channels/ChannelPostScanTask.cs

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using System;
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using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.Channels;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.Channels
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{
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public class ChannelPostScanTask
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{
private readonly IChannelManager _channelManager;
private readonly IUserManager _userManager;
private readonly ILogger _logger;
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private readonly ILibraryManager _libraryManager;
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public ChannelPostScanTask(IChannelManager channelManager, IUserManager userManager, ILogger logger, ILibraryManager libraryManager)
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{
_channelManager = channelManager;
_userManager = userManager;
_logger = logger;
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_libraryManager = libraryManager;
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}
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public Task Run(IProgress<double> progress, CancellationToken cancellationToken)
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{
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CleanDatabase(cancellationToken);
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progress.Report(100);
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return Task.CompletedTask;
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}
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public static string GetUserDistinctValue(User user)
{
var channels = user.Policy.EnabledChannels
.OrderBy(i => i)
.ToList();
return string.Join("|", channels.ToArray());
}
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private void CleanDatabase(CancellationToken cancellationToken)
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{
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var installedChannelIds = ((ChannelManager)_channelManager).GetInstalledChannelIds();
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var databaseIds = _libraryManager.GetItemIds(new InternalItemsQuery
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{
IncludeItemTypes = new[] { typeof(Channel).Name }
});
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var invalidIds = databaseIds
.Except(installedChannelIds)
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.ToList();
foreach (var id in invalidIds)
{
cancellationToken.ThrowIfCancellationRequested();
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CleanChannel(id, cancellationToken);
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}
}
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private void CleanChannel(Guid id, CancellationToken cancellationToken)
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{
_logger.LogInformation("Cleaning channel {0} from database", id);
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// Delete all channel items
var allIds = _libraryManager.GetItemIds(new InternalItemsQuery
{
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ChannelIds = new[] { id }
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});
foreach (var deleteId in allIds)
{
cancellationToken.ThrowIfCancellationRequested();
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DeleteItem(deleteId);
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}
// Finally, delete the channel itself
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DeleteItem(id);
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}
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private void DeleteItem(Guid id)
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{
var item = _libraryManager.GetItemById(id);
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if (item == null)
{
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return;
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}
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_libraryManager.DeleteItem(item, new DeleteOptions
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{
DeleteFileLocation = false
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}, false);
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}
}
}