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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Controller.Collections;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Entities.Movies;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.Playlists;
using MediaBrowser.Controller.Providers;
using MediaBrowser.Model.Globalization;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.Tasks;
using Microsoft.Extensions.Logging;
namespace Emby.Server.Implementations.ScheduledTasks.Tasks;
/// <summary>
/// Deletes path references from collections and playlists that no longer exists.
/// </summary>
public class CleanupCollectionAndPlaylistPathsTask : IScheduledTask
{
private readonly ILocalizationManager _localization;
private readonly ICollectionManager _collectionManager;
private readonly IPlaylistManager _playlistManager;
private readonly ILogger<CleanupCollectionAndPlaylistPathsTask> _logger;
private readonly IProviderManager _providerManager;
/// <summary>
/// Initializes a new instance of the <see cref="CleanupCollectionAndPlaylistPathsTask"/> class.
/// </summary>
/// <param name="localization">Instance of the <see cref="ILocalizationManager"/> interface.</param>
/// <param name="collectionManager">Instance of the <see cref="ICollectionManager"/> interface.</param>
/// <param name="playlistManager">Instance of the <see cref="IPlaylistManager"/> interface.</param>
/// <param name="logger">Instance of the <see cref="ILogger"/> interface.</param>
/// <param name="providerManager">Instance of the <see cref="IProviderManager"/> interface.</param>
public CleanupCollectionAndPlaylistPathsTask(
ILocalizationManager localization,
ICollectionManager collectionManager,
IPlaylistManager playlistManager,
ILogger<CleanupCollectionAndPlaylistPathsTask> logger,
IProviderManager providerManager)
{
_localization = localization;
_collectionManager = collectionManager;
_playlistManager = playlistManager;
_logger = logger;
_providerManager = providerManager;
}
/// <inheritdoc />
public string Name => _localization.GetLocalizedString("TaskCleanCollectionsAndPlaylists");
/// <inheritdoc />
public string Key => "CleanCollectionsAndPlaylists";
/// <inheritdoc />
public string Description => _localization.GetLocalizedString("TaskCleanCollectionsAndPlaylistsDescription");
/// <inheritdoc />
public string Category => _localization.GetLocalizedString("TasksMaintenanceCategory");
/// <inheritdoc />
public async Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
{
var collectionsFolder = await _collectionManager.GetCollectionsFolder(false).ConfigureAwait(false);
if (collectionsFolder is null)
{
_logger.LogDebug("There is no collections folder to be found");
}
else
{
var collections = collectionsFolder.Children.OfType<BoxSet>().ToArray();
_logger.LogDebug("Found {CollectionLength} boxsets", collections.Length);
for (var index = 0; index < collections.Length; index++)
{
var collection = collections[index];
_logger.LogDebug("Checking boxset {CollectionName}", collection.Name);
await CleanupLinkedChildrenAsync(collection, cancellationToken).ConfigureAwait(false);
progress.Report(50D / collections.Length * (index + 1));
}
}
var playlistsFolder = _playlistManager.GetPlaylistsFolder();
if (playlistsFolder is null)
{
_logger.LogDebug("There is no playlists folder to be found");
return;
}
var playlists = playlistsFolder.Children.OfType<Playlist>().ToArray();
_logger.LogDebug("Found {PlaylistLength} playlists", playlists.Length);
for (var index = 0; index < playlists.Length; index++)
{
var playlist = playlists[index];
_logger.LogDebug("Checking playlist {PlaylistName}", playlist.Name);
await CleanupLinkedChildrenAsync(playlist, cancellationToken).ConfigureAwait(false);
progress.Report(50D / playlists.Length * (index + 1));
}
}
private async Task CleanupLinkedChildrenAsync<T>(T folder, CancellationToken cancellationToken)
where T : Folder
{
List<LinkedChild>? itemsToRemove = null;
foreach (var linkedChild in folder.LinkedChildren)
{
var path = linkedChild.Path;
if (!File.Exists(path) && !Directory.Exists(path))
{
_logger.LogInformation("Item in {FolderName} cannot be found at {ItemPath}", folder.Name, path);
(itemsToRemove ??= new List<LinkedChild>()).Add(linkedChild);
}
}
if (itemsToRemove is not null)
{
_logger.LogDebug("Updating {FolderName}", folder.Name);
folder.LinkedChildren = folder.LinkedChildren.Except(itemsToRemove).ToArray();
await _providerManager.SaveMetadataAsync(folder, ItemUpdateType.MetadataEdit).ConfigureAwait(false);
await folder.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, cancellationToken).ConfigureAwait(false);
}
}
/// <inheritdoc />
public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
{
yield return new TaskTriggerInfo
{
Type = TaskTriggerInfoType.StartupTrigger,
};
}
}
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