refactor: isolate playback and upload use cases

services/api/internal/uploads/worker.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"context"
 	"encoding/hex"
-	"encoding/json"
 	"errors"
 	"fmt"
 	"io/fs"
@@ -17,7 +16,6 @@ import (
 	"time"
 
 	"github.com/google/uuid"
-	"github.com/jackc/pgx/v5"
 
 	"pipu/api/internal/library"
 	"pipu/api/internal/library/meta"
@@ -114,7 +112,7 @@ type outcome struct {
 func (s *Service) process(ctx context.Context, f File) error {
 	abs := s.stagingAbs(f.StagingPath)
 	o := s.analyze(ctx, f, abs)
-	if err := s.saveOutcome(ctx, f, o); err != nil {
+	if err := s.store.SaveOutcome(ctx, f, o); err != nil {
 		return err
 	}
 	if o.status != StatusPendingReview {
@@ -256,38 +254,6 @@ func (s *Service) sourcePatterns(ctx context.Context, id uuid.UUID) []meta.Patte
 	return patterns
 }
 
-func (s *Service) saveOutcome(ctx context.Context, f File, o outcome) error {
-	return s.store.Transition(ctx, f.ID, []Status{StatusProcessing}, o.status, func(tx pgx.Tx) error {
-		var (
-			tags, metaJSON []byte
-			points         []int32
-		)
-		if o.tags != nil {
-			tags, _ = json.Marshal(o.tags)
-		}
-		if o.meta != nil {
-			metaJSON, _ = json.Marshal(o.meta)
-		}
-		if o.print != nil {
-			points = make([]int32, len(o.print.Points))
-			for i, p := range o.print.Points {
-				points[i] = int32(p)
-			}
-		}
-		p := o.probe
-		_, err := tx.Exec(ctx, `
-			UPDATE upload_files SET sha256 = coalesce($2, sha256), format = NULLIF($3, ''), codec = NULLIF($4, ''),
-				bitrate = NULLIF($5, 0), sample_rate = NULLIF($6, 0), bit_depth = NULLIF($7, 0), duration_ms = NULLIF($8, 0),
-				tags = $9, metadata = $10, fingerprint = $11, duplicate_of_track_id = $12, duplicate_level = NULLIF($13, ''),
-				possible_duplicate = $14, quality_upgrade = $20, target_source_id = $15, target_rel_path = $16, status_reason = NULLIF($17, ''),
-				matched_artist_id = $18, matched_album_id = $19
-			WHERE id = $1`,
-			f.ID, o.sha, p.Format, p.Codec, p.Bitrate, p.SampleRate, p.BitDepth, p.DurationMs, tags, metaJSON, points,
-			o.dupTrack, o.dupLevel, o.possible, o.place.SourceID, o.place.RelPath, o.reason, o.place.ArtistID, o.place.AlbumID, o.quality)
-		return err
-	})
-}
-
 // --- Импорт ---
 
 // importNext импортирует один одобренный файл; false — работы нет.
@@ -300,17 +266,14 @@ func (s *Service) importNext(ctx context.Context) bool {
 		s.log.Error("uploads: next to import", "err", err)
 		return false
 	}
-	if err := s.store.Transition(ctx, f.ID, []Status{StatusApproved}, StatusImporting, nil); err != nil {
+	if err := s.store.ChangeStatus(ctx, f.ID, []Status{StatusApproved}, StatusImporting); err != nil {
 		// Файл успели отклонить — берём следующий; сбой БД — ждём тика.
 		return errors.Is(err, ErrWrongStatus)
 	}
 	if err := s.importFile(ctx, f); err != nil {
 		s.log.Warn("upload import failed", "upload_id", f.ID, "err", err)
 		msg := err.Error()
-		if ferr := s.store.Transition(ctx, f.ID, []Status{StatusImporting}, StatusImportFailed, func(tx pgx.Tx) error {
-			_, err := tx.Exec(ctx, `UPDATE upload_files SET status_reason = $2 WHERE id = $1`, f.ID, CodeImportFailed+": "+msg)
-			return err
-		}); ferr != nil {
+		if ferr := s.store.FailImport(ctx, f.ID, CodeImportFailed+": "+msg); ferr != nil {
 			s.log.Error("uploads: mark import failed", "upload_id", f.ID, "err", ferr)
 		}
 	}
@@ -360,13 +323,7 @@ func (s *Service) importFile(ctx context.Context, f File) error {
 	if err != nil {
 		return fmt.Errorf("scan: %w", err)
 	}
-	if err := s.store.Transition(ctx, f.ID, []Status{StatusImporting}, StatusImported, func(tx pgx.Tx) error {
-		if _, err := tx.Exec(ctx, `UPDATE upload_files SET target_source_id = $2, target_rel_path = $3 WHERE id = $1`,
-			f.ID, pl.src.ID, rel); err != nil {
-			return err
-		}
-		return MarkImported(ctx, tx, f.ID, fileID)
-	}); err != nil {
+	if err := s.store.CompleteImport(ctx, f.ID, pl.src.ID, rel, fileID); err != nil {
 		return err
 	}
 	s.removeStaging(f)
@@ -439,7 +396,7 @@ func (s *Service) expire(ctx context.Context) {
 		if err != nil {
 			continue
 		}
-		if err := s.store.Transition(ctx, id, []Status{StatusUploading}, StatusExpired, nil); err == nil {
+		if err := s.store.ChangeStatus(ctx, id, []Status{StatusUploading}, StatusExpired); err == nil {
 			s.removeStaging(f)
 		}
 	}
@@ -447,7 +404,7 @@ func (s *Service) expire(ctx context.Context) {
 
 // reconcile при старте: прерванный импорт — снова в approved; осиротевшие файлы staging удаляются.
 func (s *Service) reconcile(ctx context.Context) {
-	if _, err := s.store.pool.Exec(ctx, `UPDATE upload_files SET status = 'approved', updated_at = now() WHERE status = 'importing'`); err != nil {
+	if err := s.store.ResetImporting(ctx); err != nil {
 		s.log.Error("uploads: reset importing", "err", err)
 	}
 	inUse, err := s.store.StagingInUse(ctx)