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100 lines
3.3 KiB
C#
100 lines
3.3 KiB
C#
using System;
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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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using MediaBrowser.Controller.Channels;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Library;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.Channels
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{
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/// <summary>
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/// A task to remove all non-installed channels from the database.
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/// </summary>
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public class ChannelPostScanTask
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{
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private readonly IChannelManager _channelManager;
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private readonly ILogger _logger;
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private readonly ILibraryManager _libraryManager;
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/// <summary>
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/// Initializes a new instance of the <see cref="ChannelPostScanTask"/> class.
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/// </summary>
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/// <param name="channelManager">The channel manager.</param>
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/// <param name="logger">The logger.</param>
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/// <param name="libraryManager">The library manager.</param>
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public ChannelPostScanTask(IChannelManager channelManager, ILogger logger, ILibraryManager libraryManager)
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{
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_channelManager = channelManager;
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_logger = logger;
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_libraryManager = libraryManager;
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}
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/// <summary>
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/// Runs this task.
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/// </summary>
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/// <param name="progress">The progress.</param>
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/// <param name="cancellationToken">The cancellation token.</param>
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/// <returns>The completed task.</returns>
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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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private void CleanDatabase(CancellationToken cancellationToken)
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{
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var installedChannelIds = ((ChannelManager)_channelManager).GetInstalledChannelIds();
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var uninstalledChannels = _libraryManager.GetItemList(new InternalItemsQuery
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{
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IncludeItemTypes = new[] { nameof(Channel) },
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ExcludeItemIds = installedChannelIds.ToArray()
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});
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foreach (var channel in uninstalledChannels)
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{
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cancellationToken.ThrowIfCancellationRequested();
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CleanChannel((Channel)channel, cancellationToken);
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}
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}
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private void CleanChannel(Channel channel, CancellationToken cancellationToken)
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{
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_logger.LogInformation("Cleaning channel {0} from database", channel.Id);
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// Delete all channel items
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var items = _libraryManager.GetItemList(new InternalItemsQuery
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{
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ChannelIds = new[] { channel.Id }
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});
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foreach (var item in items)
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{
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cancellationToken.ThrowIfCancellationRequested();
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_libraryManager.DeleteItem(
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item,
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new DeleteOptions
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{
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DeleteFileLocation = false
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},
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false);
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}
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// Finally, delete the channel itself
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_libraryManager.DeleteItem(
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channel,
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new DeleteOptions
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{
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DeleteFileLocation = false
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},
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false);
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}
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}
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}
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