From 289652faa10770597f9bbe1c9532cd2d398c7989 Mon Sep 17 00:00:00 2001
From: lvtianyiami <lvtianyiami@gmail.com>
Date: Wed, 12 Nov 2025 11:54:45 +0800
Subject: [PATCH] Feature: Remove ChineseSubtitle Genre for video

---
 .../RemoveChineseSubtitleGenreTask.cs         | 115 ++++++++++++++++++
 1 file changed, 115 insertions(+)
 create mode 100644 Jellyfin.Plugin.MetaTube/ScheduledTasks/RemoveChineseSubtitleGenreTask.cs

diff --git a/Jellyfin.Plugin.MetaTube/ScheduledTasks/RemoveChineseSubtitleGenreTask.cs b/Jellyfin.Plugin.MetaTube/ScheduledTasks/RemoveChineseSubtitleGenreTask.cs
new file mode 100644
index 0000000..c1ba0a4
--- /dev/null
+++ b/Jellyfin.Plugin.MetaTube/ScheduledTasks/RemoveChineseSubtitleGenreTask.cs
@@ -0,0 +1,115 @@
+using System.Text.RegularExpressions;
+using Jellyfin.Plugin.MetaTube.Extensions;
+using MediaBrowser.Controller.Entities;
+using MediaBrowser.Controller.Library;
+using MediaBrowser.Model.Entities;
+using MediaBrowser.Model.Tasks;
+#if __EMBY__
+using MediaBrowser.Controller.Entities.Movies;
+using MediaBrowser.Model.Logging;
+
+#else
+using MediaBrowser.Controller.Sorting;
+using Microsoft.Extensions.Logging;
+using Jellyfin.Data.Enums;
+#endif
+
+namespace Jellyfin.Plugin.MetaTube.ScheduledTasks;
+
+public class RemoveChineseSubtitleGenreTask : IScheduledTask
+{
+    private readonly ILibraryManager _libraryManager;
+    private readonly ILogger _logger;
+
+#if __EMBY__
+    public RemoveChineseSubtitleGenreTask(ILogManager logManager, ILibraryManager libraryManager)
+    {
+        _logger = logManager.CreateLogger<OrganizeMetadataTask>();
+        _libraryManager = libraryManager;
+    }
+#else
+    public RemoveChineseSubtitleGenreTask(ILogger<RemoveChineseSubtitleGenreTask> logger, ILibraryManager libraryManager)
+    {
+        _logger = logger;
+        _libraryManager = libraryManager;
+    }
+#endif
+
+    public string Key => $"{Plugin.Instance.Name}RemoveChineseSubtitleGenre";
+
+    public string Name => "Remove ChineseSubtitle Genre";
+
+    public string Description => $"Remove ChineseSubtitle genre provided by {Plugin.Instance.Name} in library.";
+
+    public string Category => Plugin.Instance.Name;
+
+    public IEnumerable<TaskTriggerInfo> GetDefaultTriggers()
+    {
+        return Enumerable.Empty<TaskTriggerInfo>();
+    }
+
+#if __EMBY__
+    public async Task Execute(CancellationToken cancellationToken, IProgress<double> progress)
+#else
+    public async Task ExecuteAsync(IProgress<double> progress, CancellationToken cancellationToken)
+#endif
+    {
+        await Task.Yield();
+
+        progress?.Report(0);
+
+        var items = _libraryManager.GetItemList(new InternalItemsQuery
+        {
+            MediaTypes = new[] { MediaType.Video },
+#if __EMBY__
+            HasAnyProviderId = new[] { Plugin.Instance.Name },
+            IncludeItemTypes = new[] { nameof(Movie) },
+#else
+            HasAnyProviderId = new Dictionary<string, string> { { Plugin.Instance.Name, string.Empty } },
+            IncludeItemTypes = new[] { BaseItemKind.Movie }
+#endif
+        }).ToList();
+
+        foreach (var (idx, item) in items.WithIndex())
+        {
+            cancellationToken.ThrowIfCancellationRequested();
+            progress?.Report((double)idx / items.Count * 100);
+
+            var genres = item.Genres?.ToList() ?? new List<string>();
+
+            genres.RemoveAll(s => s.Equals(ChineseSubtitle));
+
+            // Remove duplicates.
+            var orderedGenres =
+                (Plugin.Instance.Configuration.EnableGenreSubstitution
+                    // Substitute genres.
+                    ? Plugin.Instance.Configuration.GetGenreSubstitutionTable().Substitute(genres)
+                    : genres).Distinct().OrderByString(genre => genre).ToList();
+
+            // Skip updating item if equal.
+            if (!orderedGenres.Any() ||
+                (item.Genres?.SequenceEqual(orderedGenres, StringComparer.OrdinalIgnoreCase)).GetValueOrDefault(false))
+                continue;
+
+            item.Genres = orderedGenres.ToArray();
+
+            _logger.Info("Remove ChineseSubtitle Genre for video: {0}", item.Name);
+
+#if __EMBY__
+            _libraryManager.UpdateItem(item, item, ItemUpdateType.MetadataEdit, null);
+#else
+            await _libraryManager
+                .UpdateItemAsync(item, item, ItemUpdateType.MetadataEdit, cancellationToken)
+                .ConfigureAwait(false);
+#endif
+        }
+
+        progress?.Report(100);
+    }
+
+    #region Helper
+
+    private const string ChineseSubtitle = "中文字幕";
+
+    #endregion
+}
\ No newline at end of file