fix(jellycompat): populate episode season parent metadata

internal/jellycompat/batch_loaders.go

@@ -16,6 +16,8 @@ import (
 type compatEpisodeTarget struct {
 	Item         upstreamListItem
 	SeriesImages seriesImageSet
+	SeasonID     string
+	SeasonName   string
 }
 
 type libraryMembershipChecker interface {
@@ -166,7 +168,11 @@ func (h *ItemsHandler) fetchCompatEpisodeTargetsByContentIDs(ctx context.Context
 	}
 
 	access := h.resolveAccessFilter(ctx, session)
-	fromClause := "episodes e JOIN media_items si ON e.series_id = si.content_id"
+	fromClause := strings.Join([]string{
+		"episodes e",
+		"JOIN media_items si ON e.series_id = si.content_id",
+		"LEFT JOIN seasons se ON se.content_id = e.season_id",
+	}, " ")
 	conditions := []string{"e.content_id = ANY($1)"}
 	args := []any{normalized}
 	argIdx := 2
@@ -208,6 +214,8 @@ func (h *ItemsHandler) fetchCompatEpisodeTargetsByContentIDs(ctx context.Context
 			e.updated_at,
 			e.season_number,
 			e.episode_number,
+			COALESCE(e.season_id, ''),
+			COALESCE(se.title, ''),
 			si.content_id,
 			si.title,
 			si.genres,
@@ -249,6 +257,8 @@ func (h *ItemsHandler) fetchCompatEpisodeTargetsByContentIDs(ctx context.Context
 			updatedAt        time.Time
 			seasonNumber     int
 			episodeNumber    int
+			seasonID         string
+			seasonName       string
 			seriesID         string
 			seriesTitle      string
 			genres           []string
@@ -275,6 +285,8 @@ func (h *ItemsHandler) fetchCompatEpisodeTargetsByContentIDs(ctx context.Context
 			&updatedAt,
 			&seasonNumber,
 			&episodeNumber,
+			&seasonID,
+			&seasonName,
 			&seriesID,
 			&seriesTitle,
 			&genres,
@@ -335,6 +347,8 @@ func (h *ItemsHandler) fetchCompatEpisodeTargetsByContentIDs(ctx context.Context
 				BackdropThumbhash: seriesBackdropTH,
 				UpdatedAt:         seriesUpdatedAt,
 			},
+			SeasonID:   seasonID,
+			SeasonName: seasonName,
 		}
 	}
 	if err := rows.Err(); err != nil {
@@ -446,6 +460,7 @@ func (h *ItemsHandler) fetchCompatEpisodeTargetsByContentIDsFallback(ctx context
 				BackdropThumbhash: series.BackdropThumbhash,
 				UpdatedAt:         series.UpdatedAt,
 			},
+			SeasonID: episode.SeasonID,
 		}
 	}
 

internal/jellycompat/handlers_items.go

@@ -2170,6 +2170,18 @@ func (h *ItemsHandler) rememberCompatEpisodeImages(dto baseItemDTO, stillURL str
 }
 
 func (h *ItemsHandler) applyCompatEpisodeTarget(dto *baseItemDTO, target compatEpisodeTarget) {
+	if target.SeasonID != "" && h.codec != nil {
+		encodedSeasonID := h.codec.EncodeStringID(EncodedIDSeason, target.SeasonID)
+		if dto.SeasonID == "" {
+			dto.SeasonID = encodedSeasonID
+		}
+		if dto.ParentID == "" {
+			dto.ParentID = encodedSeasonID
+		}
+	}
+	if dto.SeasonName == "" && target.SeasonName != "" {
+		dto.SeasonName = target.SeasonName
+	}
 	h.mapper.applySeriesImages(dto, target.SeriesImages)
 	h.rememberCompatEpisodeImages(*dto, firstNonEmpty(target.Item.StillURL, target.Item.PosterURL), target.SeriesImages)
 }

internal/jellycompat/hydrate_progress_no_detail_test.go

@@ -152,3 +152,65 @@ func TestHydrateProgressItems_NoFieldsLeavesDetailFieldsNil(t *testing.T) {
 		t.Errorf("MediaSources should be nil with no Fields; got %v", got[0].dto.MediaSources)
 	}
 }
+
+func TestHydrateProgressItems_EpisodeIncludesSeasonParentMetadata(t *testing.T) {
+	codec := NewResourceIDCodec()
+	episodeID := "episode-1"
+	seasonID := "season-1"
+	seriesID := "series-1"
+
+	itemRepo := &countingItemRepo{
+		itemsByID: map[string]*models.MediaItem{
+			seriesID: {ContentID: seriesID, Type: "series", Title: "Test Series"},
+		},
+	}
+	episodeRepo := &countingEpisodeRepo{
+		episodesByID: map[string]*models.Episode{
+			episodeID: {
+				ContentID:     episodeID,
+				SeriesID:      seriesID,
+				SeasonID:      seasonID,
+				Title:         "Episode Four",
+				SeasonNumber:  1,
+				EpisodeNumber: 4,
+			},
+		},
+	}
+
+	h := &ItemsHandler{
+		content:     &panicOnGetItemDetailContent{},
+		userData:    &mockUserDataService{},
+		itemRepo:    itemRepo,
+		episodeRepo: episodeRepo,
+		codec:       codec,
+		mapper:      newMapper(codec, &config.Config{}),
+	}
+
+	got, err := h.hydrateProgressItems(
+		context.Background(),
+		&Session{StreamAppUserID: 1, ProfileID: "profile-1"},
+		[]upstreamProgress{{MediaItemID: episodeID, PositionSeconds: 120, DurationSeconds: 1800}},
+		nil,
+		nil,
+	)
+	if err != nil {
+		t.Fatalf("hydrateProgressItems returned error: %v", err)
+	}
+	if len(got) != 1 {
+		t.Fatalf("expected 1 hydrated item; got %d (%v)", len(got), got)
+	}
+
+	wantSeasonID := codec.EncodeStringID(EncodedIDSeason, seasonID)
+	if got[0].dto.SeasonID != wantSeasonID {
+		t.Fatalf("SeasonId = %q, want %q", got[0].dto.SeasonID, wantSeasonID)
+	}
+	if got[0].dto.ParentID != wantSeasonID {
+		t.Fatalf("ParentId = %q, want season id %q", got[0].dto.ParentID, wantSeasonID)
+	}
+	if got[0].dto.IndexNumber == nil || *got[0].dto.IndexNumber != 4 {
+		t.Fatalf("IndexNumber = %v, want 4", got[0].dto.IndexNumber)
+	}
+	if got[0].dto.ParentIndexNumber == nil || *got[0].dto.ParentIndexNumber != 1 {
+		t.Fatalf("ParentIndexNumber = %v, want 1", got[0].dto.ParentIndexNumber)
+	}
+}