Improve search relevance and artist transliteration

services/api/internal/search/indexer.go

@@ -27,7 +27,7 @@ type indexSpec struct {
 	doc      func(pgx.Rows) (map[string]any, error)
 }
 
-var rankingRules = []string{"words", "typo", "proximity", "attribute", "sort", "exactness", "popularity:desc"}
+var rankingRules = []string{"words", "typo", "exactness", "proximity", "attribute", "sort", "popularity:desc"}
 
 var specs = []indexSpec{
 	{
@@ -43,7 +43,7 @@ var specs = []indexSpec{
 			if err := r.Scan(&id, &name); err != nil {
 				return nil, err
 			}
-			return map[string]any{"id": id, "name": name, "name_translit": Translit(name), "popularity": 0}, nil
+			return map[string]any{"id": id, "name": name, "name_translit": TranslitVariants(name), "popularity": 0}, nil
 		},
 	},
 	{
@@ -65,7 +65,7 @@ var specs = []indexSpec{
 			}
 			return map[string]any{
 				"id": id, "title": title, "artist_name": artist, "year": year, "popularity": 0,
-				"title_translit": Translit(title), "artist_translit": Translit(artist),
+				"title_translit": TranslitVariants(title), "artist_translit": TranslitVariants(artist),
 			}, nil
 		},
 	},
@@ -97,12 +97,12 @@ var specs = []indexSpec{
 			}
 			translit := make([]string, 0, len(artists))
 			for _, a := range artists {
-				translit = append(translit, Translit(a))
+				translit = append(translit, TranslitVariants(a)...)
 			}
 			return map[string]any{
 				"id": id, "title": title, "album_title": album, "year": year, "artist_names": artists,
 				"genres": genres, "available": available, "popularity": 0,
-				"title_translit": Translit(title), "artist_translit": translit,
+				"title_translit": TranslitVariants(title), "artist_translit": translit,
 			}, nil
 		},
 	},