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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Data.Enums;
using Jellyfin.Extensions;
using MediaBrowser.Common.Configuration;
using MediaBrowser.Controller.Dto;
using MediaBrowser.Controller.Entities;
using MediaBrowser.Controller.Library;
using MediaBrowser.Controller.MediaEncoding;
using MediaBrowser.Controller.Persistence;
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>
/// Class ChapterImagesTask.
/// </summary>
public class ChapterImagesTask : IScheduledTask
{
private readonly ILogger<ChapterImagesTask> _logger;
private readonly ILibraryManager _libraryManager;
private readonly IItemRepository _itemRepo;
private readonly IApplicationPaths _appPaths;
private readonly IEncodingManager _encodingManager;
private readonly IFileSystem _fileSystem;
private readonly ILocalizationManager _localization;
/// <summary>
/// Initializes a new instance of the <see cref="ChapterImagesTask" /> class.
/// </summary>
/// <param name="logger">The logger.</param>.
/// <param name="libraryManager">The library manager.</param>.
/// <param name="itemRepo">The item repository.</param>
/// <param name="appPaths">The application paths.</param>
/// <param name="encodingManager">The encoding manager.</param>
/// <param name="fileSystem">The filesystem.</param>
/// <param name="localization">The localization manager.</param>
public ChapterImagesTask(
ILogger<ChapterImagesTask> logger,
ILibraryManager libraryManager,
IItemRepository itemRepo,
IApplicationPaths appPaths,
IEncodingManager encodingManager,
IFileSystem fileSystem,
ILocalizationManager localization)
{
_logger = logger;
_libraryManager = libraryManager;
_itemRepo = itemRepo;
_appPaths = appPaths;
_encodingManager = encodingManager;
_fileSystem = fileSystem;
_localization = localization;
}
/// <inheritdoc />
public string Name => _localization.GetLocalizedString("TaskRefreshChapterImages");
/// <inheritdoc />
public string Description => _localization.GetLocalizedString("TaskRefreshChapterImagesDescription");
/// <inheritdoc />
public string Category => _localization.GetLocalizedString("TasksLibraryCategory");
/// <inheritdoc />
public string Key => "RefreshChapterImages";
/// <inheritdoc />
public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
{
return new[]
{
new TaskTriggerInfo
{
Type = TaskTriggerInfo.TriggerDaily,
TimeOfDayTicks = TimeSpan.FromHours(2).Ticks,
MaxRuntimeTicks = TimeSpan.FromHours(4).Ticks
}
};
}
/// <inheritdoc />
public async Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
{
var videos = _libraryManager.GetItemList(new InternalItemsQuery
{
MediaTypes = new[] { MediaType.Video },
IsFolder = false,
Recursive = true,
DtoOptions = new DtoOptions(false)
{
EnableImages = false
},
SourceTypes = new SourceType[] { SourceType.Library },
IsVirtualItem = false
})
.OfType<Video>()
.ToList();
var numComplete = 0;
var failHistoryPath = Path.Combine(_appPaths.CachePath, "chapter-failures.txt");
List<string> previouslyFailedImages;
if (File.Exists(failHistoryPath))
{
try
{
previouslyFailedImages = (await File.ReadAllTextAsync(failHistoryPath, cancellationToken).ConfigureAwait(false))
.Split('|', StringSplitOptions.RemoveEmptyEntries)
.ToList();
}
catch (IOException)
{
previouslyFailedImages = new List<string>();
}
}
else
{
previouslyFailedImages = new List<string>();
}
var directoryService = new DirectoryService(_fileSystem);
foreach (var video in videos)
{
cancellationToken.ThrowIfCancellationRequested();
var key = video.Path + video.DateModified.Ticks;
var extract = !previouslyFailedImages.Contains(key, StringComparison.OrdinalIgnoreCase);
try
{
var chapters = _itemRepo.GetChapters(video);
var success = await _encodingManager.RefreshChapterImages(video, directoryService, chapters, extract, true, cancellationToken).ConfigureAwait(false);
if (!success)
{
previouslyFailedImages.Add(key);
var parentPath = Path.GetDirectoryName(failHistoryPath);
if (parentPath is not null)
{
Directory.CreateDirectory(parentPath);
}
string text = string.Join('|', previouslyFailedImages);
await File.WriteAllTextAsync(failHistoryPath, text, cancellationToken).ConfigureAwait(false);
}
numComplete++;
double percent = numComplete;
percent /= videos.Count;
progress.Report(100 * percent);
}
catch (ObjectDisposedException ex)
{
// TODO Investigate and properly fix.
_logger.LogError(ex, "Object Disposed");
break;
}
}
}
}
}
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