refactor: isolate playback and upload use cases

services/api/cmd/api/main.go

@@ -154,10 +154,10 @@ func newApp(ctx context.Context, cfg config.API, pool *pgxpool.Pool, rdb *redis.
 		}
 		return libSvc.Root(src)
 	}
-	var dto library.DTO
-	pb := playback.NewHandler(playback.NewStore(pool), libStore, func() library.DTO { return dto }, signer, transcoder,
+	pbStore := playback.NewStore(pool)
+	dto := library.DTO{Signer: signer, Personal: playback.NewPersonalizer(pbStore, signer)}
+	pb := playback.NewHandler(pbStore, libStore, dto, signer, transcoder,
 		rootFor, cfg.XAccel, log)
-	dto = library.DTO{Signer: signer, Personal: pb}
 	libSvc.OnCatalogChanged = indexer.Trigger
 	indexer.Trigger() // индекс мог отстать (новая версия, сбой Meilisearch) — пересобираем при старте
 	go libSvc.Restore(ctx)
@@ -169,7 +169,7 @@ func newApp(ctx context.Context, cfg config.API, pool *pgxpool.Pool, rdb *redis.
 	upSvc.Run(ctx)
 
 	wh := wave.NewHandler(pool, &wave.Recommender{URL: cfg.RecommenderURL, Token: cfg.InternalToken,
-		Client: &http.Client{}}, libStore, func() library.DTO { return dto }, log)
+		Client: &http.Client{}}, libStore, dto, log)
 	wh.Warm = pb.Prewarm
 	return server.NewRouter(server.Deps{
 		Genius:      genius.NewHandler(geniusSvc),