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411 lines
14 KiB
411 lines
14 KiB
#nullable disable
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#pragma warning disable CS1591
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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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 Jellyfin.Extensions;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Controller.Entities;
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using MediaBrowser.Controller.Entities.Movies;
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using MediaBrowser.Controller.Entities.TV;
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using MediaBrowser.Controller.Library;
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using MediaBrowser.Controller.Persistence;
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using MediaBrowser.Controller.Providers;
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using MediaBrowser.Controller.Subtitles;
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using MediaBrowser.Model.Configuration;
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using MediaBrowser.Model.Entities;
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using MediaBrowser.Model.Globalization;
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using MediaBrowser.Model.IO;
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using MediaBrowser.Model.Providers;
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using Microsoft.Extensions.Logging;
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namespace MediaBrowser.Providers.Subtitles
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{
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public class SubtitleManager : ISubtitleManager
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{
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private readonly ILogger<SubtitleManager> _logger;
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private readonly IFileSystem _fileSystem;
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private readonly ILibraryMonitor _monitor;
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private readonly IMediaSourceManager _mediaSourceManager;
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private readonly ILocalizationManager _localization;
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private ISubtitleProvider[] _subtitleProviders;
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public SubtitleManager(
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ILogger<SubtitleManager> logger,
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IFileSystem fileSystem,
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ILibraryMonitor monitor,
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IMediaSourceManager mediaSourceManager,
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ILocalizationManager localizationManager)
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{
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_logger = logger;
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_fileSystem = fileSystem;
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_monitor = monitor;
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_mediaSourceManager = mediaSourceManager;
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_localization = localizationManager;
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}
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/// <inheritdoc />
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public event EventHandler<SubtitleDownloadFailureEventArgs> SubtitleDownloadFailure;
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/// <inheritdoc />
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public void AddParts(IEnumerable<ISubtitleProvider> subtitleProviders)
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{
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_subtitleProviders = subtitleProviders
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.OrderBy(i => i is IHasOrder hasOrder ? hasOrder.Order : 0)
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.ToArray();
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}
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/// <inheritdoc />
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public async Task<RemoteSubtitleInfo[]> SearchSubtitles(SubtitleSearchRequest request, CancellationToken cancellationToken)
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{
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if (request.Language != null)
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{
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var culture = _localization.FindLanguageInfo(request.Language);
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if (culture != null)
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{
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request.TwoLetterISOLanguageName = culture.TwoLetterISOLanguageName;
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}
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}
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var contentType = request.ContentType;
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var providers = _subtitleProviders
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.Where(i => i.SupportedMediaTypes.Contains(contentType) && !request.DisabledSubtitleFetchers.Contains(i.Name, StringComparison.OrdinalIgnoreCase))
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.OrderBy(i =>
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{
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var index = request.SubtitleFetcherOrder.ToList().IndexOf(i.Name);
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return index == -1 ? int.MaxValue : index;
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})
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.ToArray();
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// If not searching all, search one at a time until something is found
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if (!request.SearchAllProviders)
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{
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foreach (var provider in providers)
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{
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try
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{
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var searchResults = await provider.Search(request, cancellationToken).ConfigureAwait(false);
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var list = searchResults.ToArray();
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if (list.Length > 0)
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{
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Normalize(list);
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return list;
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}
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error downloading subtitles from {Provider}", provider.Name);
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}
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}
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return Array.Empty<RemoteSubtitleInfo>();
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}
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var tasks = providers.Select(async i =>
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{
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try
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{
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var searchResults = await i.Search(request, cancellationToken).ConfigureAwait(false);
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var list = searchResults.ToArray();
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Normalize(list);
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return list;
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}
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catch (Exception ex)
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{
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_logger.LogError(ex, "Error downloading subtitles from {0}", i.Name);
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return Array.Empty<RemoteSubtitleInfo>();
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}
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});
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var results = await Task.WhenAll(tasks).ConfigureAwait(false);
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return results.SelectMany(i => i).ToArray();
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}
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/// <inheritdoc />
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public Task DownloadSubtitles(Video video, string subtitleId, CancellationToken cancellationToken)
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{
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var libraryOptions = BaseItem.LibraryManager.GetLibraryOptions(video);
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return DownloadSubtitles(video, libraryOptions, subtitleId, cancellationToken);
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}
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/// <inheritdoc />
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public async Task DownloadSubtitles(
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Video video,
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LibraryOptions libraryOptions,
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string subtitleId,
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CancellationToken cancellationToken)
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{
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var parts = subtitleId.Split('_', 2);
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var provider = GetProvider(parts[0]);
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try
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{
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var response = await GetRemoteSubtitles(subtitleId, cancellationToken).ConfigureAwait(false);
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await TrySaveSubtitle(video, libraryOptions, response).ConfigureAwait(false);
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}
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catch (RateLimitExceededException)
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{
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throw;
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}
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catch (Exception ex)
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{
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SubtitleDownloadFailure?.Invoke(this, new SubtitleDownloadFailureEventArgs
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{
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Item = video,
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Exception = ex,
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Provider = provider.Name
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});
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throw;
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}
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}
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/// <inheritdoc />
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public Task UploadSubtitle(Video video, SubtitleResponse response)
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{
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var libraryOptions = BaseItem.LibraryManager.GetLibraryOptions(video);
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return TrySaveSubtitle(video, libraryOptions, response);
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}
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private async Task TrySaveSubtitle(
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Video video,
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LibraryOptions libraryOptions,
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SubtitleResponse response)
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{
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var saveInMediaFolder = libraryOptions.SaveSubtitlesWithMedia;
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await using var stream = response.Stream;
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await using var memoryStream = new MemoryStream();
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await stream.CopyToAsync(memoryStream).ConfigureAwait(false);
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memoryStream.Position = 0;
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var savePaths = new List<string>();
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var saveFileName = Path.GetFileNameWithoutExtension(video.Path) + "." + response.Language.ToLowerInvariant();
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if (response.IsForced)
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{
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saveFileName += ".forced";
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}
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saveFileName += "." + response.Format.ToLowerInvariant();
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if (saveInMediaFolder)
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{
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var mediaFolderPath = Path.GetFullPath(Path.Combine(video.ContainingFolderPath, saveFileName));
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// TODO: Add some error handling to the API user: return BadRequest("Could not save subtitle, bad path.");
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if (mediaFolderPath.StartsWith(video.ContainingFolderPath, StringComparison.Ordinal))
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{
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savePaths.Add(mediaFolderPath);
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}
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}
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var internalPath = Path.GetFullPath(Path.Combine(video.GetInternalMetadataPath(), saveFileName));
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// TODO: Add some error to the user: return BadRequest("Could not save subtitle, bad path.");
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if (internalPath.StartsWith(video.GetInternalMetadataPath(), StringComparison.Ordinal))
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{
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savePaths.Add(internalPath);
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}
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if (savePaths.Count > 0)
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{
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await TrySaveToFiles(memoryStream, savePaths).ConfigureAwait(false);
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}
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else
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{
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_logger.LogError("An uploaded subtitle could not be saved because the resulting paths were invalid.");
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}
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}
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private async Task TrySaveToFiles(Stream stream, List<string> savePaths)
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{
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List<Exception> exs = null;
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foreach (var savePath in savePaths)
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{
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_logger.LogInformation("Saving subtitles to {SavePath}", savePath);
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_monitor.ReportFileSystemChangeBeginning(savePath);
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try
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{
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Directory.CreateDirectory(Path.GetDirectoryName(savePath));
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var fileOptions = AsyncFile.WriteOptions;
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fileOptions.Mode = FileMode.CreateNew;
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fileOptions.PreallocationSize = stream.Length;
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var fs = new FileStream(savePath, fileOptions);
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await using (fs.ConfigureAwait(false))
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{
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await stream.CopyToAsync(fs).ConfigureAwait(false);
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}
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return;
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}
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catch (Exception ex)
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{
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// Bug in analyzer -- https://github.com/dotnet/roslyn-analyzers/issues/5160
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#pragma warning disable CA1508
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(exs ??= new List<Exception>()).Add(ex);
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#pragma warning restore CA1508
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}
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finally
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{
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_monitor.ReportFileSystemChangeComplete(savePath, false);
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}
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stream.Position = 0;
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}
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if (exs != null)
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{
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throw new AggregateException(exs);
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}
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}
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/// <inheritdoc />
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public Task<RemoteSubtitleInfo[]> SearchSubtitles(Video video, string language, bool? isPerfectMatch, bool isAutomated, CancellationToken cancellationToken)
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{
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if (video.VideoType != VideoType.VideoFile)
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{
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return Task.FromResult(Array.Empty<RemoteSubtitleInfo>());
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}
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VideoContentType mediaType;
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if (video is Episode)
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{
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mediaType = VideoContentType.Episode;
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}
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else if (video is Movie)
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{
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mediaType = VideoContentType.Movie;
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}
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else
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{
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// These are the only supported types
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return Task.FromResult(Array.Empty<RemoteSubtitleInfo>());
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}
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var request = new SubtitleSearchRequest
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{
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ContentType = mediaType,
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IndexNumber = video.IndexNumber,
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Language = language,
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MediaPath = video.Path,
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Name = video.Name,
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ParentIndexNumber = video.ParentIndexNumber,
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ProductionYear = video.ProductionYear,
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ProviderIds = video.ProviderIds,
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RuntimeTicks = video.RunTimeTicks,
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IsPerfectMatch = isPerfectMatch ?? false,
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IsAutomated = isAutomated
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};
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if (video is Episode episode)
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{
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request.IndexNumberEnd = episode.IndexNumberEnd;
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request.SeriesName = episode.SeriesName;
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}
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return SearchSubtitles(request, cancellationToken);
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}
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private void Normalize(IEnumerable<RemoteSubtitleInfo> subtitles)
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{
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foreach (var sub in subtitles)
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{
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sub.Id = GetProviderId(sub.ProviderName) + "_" + sub.Id;
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}
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}
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private string GetProviderId(string name)
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{
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return name.ToLowerInvariant().GetMD5().ToString("N", CultureInfo.InvariantCulture);
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}
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private ISubtitleProvider GetProvider(string id)
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{
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return _subtitleProviders.First(i => string.Equals(id, GetProviderId(i.Name), StringComparison.Ordinal));
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}
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/// <inheritdoc />
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public Task DeleteSubtitles(BaseItem item, int index)
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{
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var stream = _mediaSourceManager.GetMediaStreams(new MediaStreamQuery
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{
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Index = index,
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ItemId = item.Id,
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Type = MediaStreamType.Subtitle
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})[0];
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var path = stream.Path;
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_monitor.ReportFileSystemChangeBeginning(path);
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try
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{
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_fileSystem.DeleteFile(path);
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}
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finally
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{
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_monitor.ReportFileSystemChangeComplete(path, false);
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}
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return item.RefreshMetadata(CancellationToken.None);
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}
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/// <inheritdoc />
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public Task<SubtitleResponse> GetRemoteSubtitles(string id, CancellationToken cancellationToken)
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{
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var parts = id.Split('_', 2);
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var provider = GetProvider(parts[0]);
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id = parts[^1];
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return provider.GetSubtitles(id, cancellationToken);
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}
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/// <inheritdoc />
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public SubtitleProviderInfo[] GetSupportedProviders(BaseItem item)
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{
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VideoContentType mediaType;
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if (item is Episode)
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{
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mediaType = VideoContentType.Episode;
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}
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else if (item is Movie)
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{
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mediaType = VideoContentType.Movie;
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}
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else
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{
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// These are the only supported types
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return Array.Empty<SubtitleProviderInfo>();
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}
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return _subtitleProviders
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.Where(i => i.SupportedMediaTypes.Contains(mediaType))
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.Select(i => new SubtitleProviderInfo
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{
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Name = i.Name,
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Id = GetProviderId(i.Name)
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}).ToArray();
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}
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}
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}
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