Backport pull request #12050 from jellyfin/release-10.9.z

Fix season handling

Original-merge: 4601097d3e30bb166f18672de82a13e3ca525343

Merged-by: Bond-009 <bond.009@outlook.com>

Backported-by: Joshua M. Boniface <joshua@boniface.me>

MediaBrowser.Controller/Entities/TV/Series.cs

@@ -350,17 +350,10 @@ namespace MediaBrowser.Controller.Entities.TV
 
         public List<BaseItem> GetSeasonEpisodes(Season parentSeason, User user, DtoOptions options, bool shouldIncludeMissingEpisodes)
         {
-            var queryFromSeries = ConfigurationManager.Configuration.DisplaySpecialsWithinSeasons;
-
-            // add optimization when this setting is not enabled
-            var seriesKey = queryFromSeries ?
-                GetUniqueSeriesKey(this) :
-                GetUniqueSeriesKey(parentSeason);
-
             var query = new InternalItemsQuery(user)
             {
-                AncestorWithPresentationUniqueKey = queryFromSeries ? null : seriesKey,
-                SeriesPresentationUniqueKey = queryFromSeries ? seriesKey : null,
+                AncestorWithPresentationUniqueKey = null,
+                SeriesPresentationUniqueKey = GetUniqueSeriesKey(this),
                 IncludeItemTypes = new[] { BaseItemKind.Episode },
                 OrderBy = new[] { (ItemSortBy.SortName, SortOrder.Ascending) },
                 DtoOptions = options

MediaBrowser.Providers/TV/SeriesMetadataService.cs

@@ -61,8 +61,8 @@ namespace MediaBrowser.Providers.TV
             await base.AfterMetadataRefresh(item, refreshOptions, cancellationToken).ConfigureAwait(false);
 
             RemoveObsoleteEpisodes(item);
-            RemoveObsoleteSeasons(item);
             await CreateSeasonsAsync(item, cancellationToken).ConfigureAwait(false);
+            RemoveObsoleteSeasons(item);
         }
 
         /// <inheritdoc />
@@ -91,7 +91,7 @@ namespace MediaBrowser.Providers.TV
 
         private void RemoveObsoleteSeasons(Series series)
         {
-            // TODO Legacy. It's not really "physical" seasons as any virtual seasons are always converted to non-virtual in UpdateAndCreateSeasonsAsync.
+            // TODO Legacy. It's not really "physical" seasons as any virtual seasons are always converted to non-virtual in CreateSeasonsAsync.
             var physicalSeasonNumbers = new HashSet<int>();
             var virtualSeasons = new List<Season>();
             foreach (var existingSeason in series.Children.OfType<Season>())
@@ -203,11 +203,16 @@ namespace MediaBrowser.Providers.TV
             foreach (var seasonNumber in uniqueSeasonNumbers)
             {
                 // Null season numbers will have a 'dummy' season created because seasons are always required.
-                if (!seasons.Any(i => i.IndexNumber == seasonNumber))
+                var existingSeason = seasons.FirstOrDefault(i => i.IndexNumber == seasonNumber);
+                if (existingSeason is null)
                 {
                     var seasonName = GetValidSeasonNameForSeries(series, null, seasonNumber);
-                    var season = await CreateSeasonAsync(series, seasonName, seasonNumber, cancellationToken).ConfigureAwait(false);
-                    series.AddChild(season);
+                    await CreateSeasonAsync(series, seasonName, seasonNumber, cancellationToken).ConfigureAwait(false);
+                }
+                else if (existingSeason.IsVirtualItem)
+                {
+                    existingSeason.IsVirtualItem = false;
+                    await existingSeason.UpdateToRepositoryAsync(ItemUpdateType.MetadataEdit, cancellationToken).ConfigureAwait(false);
                 }
             }
         }
@@ -220,7 +225,7 @@ namespace MediaBrowser.Providers.TV
         /// <param name="seasonNumber">The season number.</param>
         /// <param name="cancellationToken">The cancellation token.</param>
         /// <returns>The newly created season.</returns>
-        private async Task<Season> CreateSeasonAsync(
+        private async Task CreateSeasonAsync(
             Series series,
             string? seasonName,
             int? seasonNumber,
@@ -237,14 +242,12 @@ namespace MediaBrowser.Providers.TV
                     typeof(Season)),
                 IsVirtualItem = false,
                 SeriesId = series.Id,
-                SeriesName = series.Name
+                SeriesName = series.Name,
+                SeriesPresentationUniqueKey = series.GetPresentationUniqueKey()
             };
 
             series.AddChild(season);
-
             await season.RefreshMetadata(new MetadataRefreshOptions(new DirectoryService(FileSystem)), cancellationToken).ConfigureAwait(false);
-
-            return season;
         }
 
         private string GetValidSeasonNameForSeries(Series series, string? seasonName, int? seasonNumber)