fix: language filter also checks the title's original language (v1.0.0.15)

AllowedLanguages only filtered on each video's iso_639_1 tag, and TMDB
often tags subtitled foreign trailers as "en". With en,fr selected, 6 of
27 downloaded trailers were Korean, Chinese or Zulu titles. Candidates
now also need an allowed original_language (from the list results, so
no extra API calls).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Jellyfin.Plugin.CinemaTrailers4Jellyfins/Configuration/config.html

@@ -45,7 +45,9 @@
                     <fieldset class="verticalSection verticalSection-extrabottompadding">
                         <legend><h3 class="sectionTitle">Trailer Languages</h3></legend>
                         <p class="fieldDescription">
-                            Only download trailers in the selected languages.
+                            Only download trailers in the selected languages. Both the trailer and the
+                            movie/show itself (its original language) must be in one of them, so a
+                            subtitled foreign trailer is skipped.
                             Leave everything unchecked to allow all languages.
                         </p>
                         <div style="display:grid;grid-template-columns:1fr 1fr;gap:0 2em;">

Jellyfin.Plugin.CinemaTrailers4Jellyfins/Jellyfin.Plugin.CinemaTrailers4Jellyfins.csproj

@@ -3,8 +3,8 @@
   <PropertyGroup>
     <TargetFramework>net9.0</TargetFramework>
     <RootNamespace>Jellyfin.Plugin.CinemaTrailers4Jellyfins</RootNamespace>
-    <AssemblyVersion>1.0.0.14</AssemblyVersion>
+    <AssemblyVersion>1.0.0.15</AssemblyVersion>
-    <FileVersion>1.0.0.14</FileVersion>
+    <FileVersion>1.0.0.15</FileVersion>
     <Nullable>enable</Nullable>
     <GenerateDocumentationFile>false</GenerateDocumentationFile>
     <TreatWarningsAsErrors>false</TreatWarningsAsErrors>

Jellyfin.Plugin.CinemaTrailers4Jellyfins/ScheduledTasks/DownloadTrailersTask.cs

@@ -177,6 +177,14 @@ namespace Jellyfin.Plugin.CinemaTrailers4Jellyfins.ScheduledTasks
                     continue;
                 }
 
+                // A trailer's own language tag is often "en" just because it has English
+                // subtitles, so also require the title itself to be in an allowed language.
+                if (allowedLanguages != null && !allowedLanguages.Contains(movie.OriginalLanguage))
+                {
+                    _logger.LogDebug("|CinemaTrailers4Jellyfins| Skipping '{Title}': original language '{Lang}' is not allowed", movie.Title, movie.OriginalLanguage);
+                    continue;
+                }
+
                 var trailers = await _tmdbService.GetTrailersAsync(
                     "movie", movie.Id.ToString(), config.TmdbApiKey, allowedLanguages, cancellationToken).ConfigureAwait(false);
 
@@ -284,6 +292,14 @@ namespace Jellyfin.Plugin.CinemaTrailers4Jellyfins.ScheduledTasks
                     continue;
                 }
 
+                // A trailer's own language tag is often "en" just because it has English
+                // subtitles, so also require the title itself to be in an allowed language.
+                if (allowedLanguages != null && !allowedLanguages.Contains(show.OriginalLanguage))
+                {
+                    _logger.LogDebug("|CinemaTrailers4Jellyfins| Skipping '{Title}': original language '{Lang}' is not allowed", show.Title, show.OriginalLanguage);
+                    continue;
+                }
+
                 var trailers = await _tmdbService.GetTrailersAsync(
                     "tv", show.Id.ToString(), config.TmdbApiKey, allowedLanguages, cancellationToken).ConfigureAwait(false);
 

Jellyfin.Plugin.CinemaTrailers4Jellyfins/Services/TmdbService.cs

@@ -14,7 +14,7 @@ namespace Jellyfin.Plugin.CinemaTrailers4Jellyfins.Services
 {
     public record TmdbVideo(string Key, string Name, string Language, bool Official, int Size);
 
-    public record TmdbMediaResult(int Id, string Title, string ReleaseDate)
+    public record TmdbMediaResult(int Id, string Title, string ReleaseDate, string OriginalLanguage)
     {
         public int? Year => DateTime.TryParse(ReleaseDate, out var d) ? d.Year : (int?)null;
     }
@@ -170,6 +170,7 @@ namespace Jellyfin.Plugin.CinemaTrailers4Jellyfins.Services
                         var releaseDate = entry.TryGetProperty(dateField, out var rd) ? rd.GetString() ?? string.Empty : string.Empty;
                         var title = entry.TryGetProperty(titleField, out var t) ? t.GetString() ?? string.Empty : string.Empty;
                         var id = entry.GetProperty("id").GetInt32();
+                        var originalLanguage = entry.TryGetProperty("original_language", out var ol) ? ol.GetString() ?? string.Empty : string.Empty;
 
                         if (releasedAfter.HasValue && DateTime.TryParse(releaseDate, out var parsed))
                         {
@@ -177,7 +178,7 @@ namespace Jellyfin.Plugin.CinemaTrailers4Jellyfins.Services
                         }
 
                         anyInRange = true;
-                        results.Add(new TmdbMediaResult(id, title, releaseDate));
+                        results.Add(new TmdbMediaResult(id, title, releaseDate, originalLanguage));
                     }
 
                     if (page >= totalPages || (releasedAfter.HasValue && !anyInRange))

build.yaml

@@ -1,5 +1,5 @@
 ---
-version: 1.0.0.14
+version: 1.0.0.15
 name: CinemaTrailers4Jellyfins
 guid: b581493e-1046-40ed-b6dc-cb8027624984
 description: >
@@ -12,9 +12,10 @@ category: General
 owner: 514mart
 targetAbi: 10.11.0.0
 changelog:
-  - When yt-dlp fails part-way, its partial download files (.part, .ytdl,
+  - Trailer Languages now also checks the original language of the movie or
-    separate video/audio) are now deleted instead of being left in the
+    show. Before, only the trailer's own language tag was checked, and
-    trailer folder
+    TMDB often tags subtitled foreign trailers as English, so Korean,
+    Chinese or Japanese trailers got through
 
 dotnetProjects:
   - name: Jellyfin.Plugin.CinemaTrailers4Jellyfins