Server changes/Sonarr

server/internal/store/library.go

@@ -138,6 +138,51 @@ func (s *Store) LibraryCandidates(ctx context.Context, genres []string, limit in
 	return collectPayloads(rows)
 }
 
+// CuratedCandidates filters the imported catalogue for a server-authored shelf. Arrays
+// are matched case-insensitively because Emby studio capitalisation is not consistent.
+func (s *Store) CuratedCandidates(
+	ctx context.Context,
+	itemTypes, genres, studios []string,
+	limit int,
+) ([]json.RawMessage, error) {
+	if len(itemTypes) == 0 || (len(genres) == 0 && len(studios) == 0) {
+		return nil, nil
+	}
+	rows, err := s.pool.Query(ctx, `
+		SELECT payload
+		FROM library_items
+		WHERE type = ANY($1)
+		  AND (
+			cardinality($2::text[]) = 0 OR
+			EXISTS (
+				SELECT 1 FROM unnest(genres) AS genre
+				WHERE lower(genre) = ANY($2)
+			)
+		  )
+		  AND (
+			cardinality($3::text[]) = 0 OR
+			EXISTS (
+				SELECT 1 FROM unnest(studios) AS studio
+				WHERE lower(studio) = ANY($3)
+			)
+		  )
+		ORDER BY community_rating DESC NULLS LAST, date_created DESC NULLS LAST
+		LIMIT $4`,
+		itemTypes, lowerStrings(genres), lowerStrings(studios), limit)
+	if err != nil {
+		return nil, fmt.Errorf("store: curated candidates: %w", err)
+	}
+	return collectPayloads(rows)
+}
+
+func lowerStrings(values []string) []string {
+	out := make([]string, 0, len(values))
+	for _, value := range values {
+		out = append(out, strings.ToLower(strings.TrimSpace(value)))
+	}
+	return out
+}
+
 func (s *Store) LibraryStats(ctx context.Context) (LibraryStats, error) {
 	stats := LibraryStats{ByType: map[string]int64{}}