番組登録を追加（登録時の過去回の選択、一時停止・再開・解除、既知の回の記録）

internal/store/store.go

@@ -59,6 +59,7 @@ type Subscription struct {
 	Enabled               bool
 	CreatedAt             time.Time
 	LastCheckedAt         *time.Time
+	JobCount              int64
 }
 
 const jobColumns = `id, episode_id, series_id, series_title, title, broadcaster_name,
@@ -246,21 +247,15 @@ func (s *Store) EpisodeStatuses(ctx context.Context, ids []string) (map[string]s
 	return result, rows.Err()
 }
 
-// AddSubscription は登録済みシリーズのタイトルと有効状態を変更しない。
-func (s *Store) AddSubscription(ctx context.Context, seriesID, title string) (bool, error) {
-	tag, err := s.pool.Exec(ctx, `INSERT INTO subscriptions (series_id, series_title)
-		VALUES ($1,$2) ON CONFLICT (series_id) DO NOTHING`, seriesID, title)
-	return tag.RowsAffected() == 1, err
-}
-
 func (s *Store) DeleteSubscription(ctx context.Context, seriesID string) (bool, error) {
 	tag, err := s.pool.Exec(ctx, `DELETE FROM subscriptions WHERE series_id=$1`, seriesID)
 	return tag.RowsAffected() == 1, err
 }
 
 func (s *Store) ListSubscriptions(ctx context.Context) ([]Subscription, error) {
-	rows, err := s.pool.Query(ctx, `SELECT series_id, series_title, enabled, created_at, last_checked_at
-		FROM subscriptions ORDER BY created_at DESC, series_id`)
+	rows, err := s.pool.Query(ctx, `SELECT s.series_id, s.series_title, s.enabled, s.created_at, s.last_checked_at,
+		(SELECT count(*) FROM download_jobs j WHERE j.series_id=s.series_id)
+		FROM subscriptions s ORDER BY s.created_at DESC, s.series_id`)
 	if err != nil {
 		return nil, err
 	}
@@ -268,7 +263,7 @@ func (s *Store) ListSubscriptions(ctx context.Context) ([]Subscription, error) {
 	var subs []Subscription
 	for rows.Next() {
 		var sub Subscription
-		if err := rows.Scan(&sub.SeriesID, &sub.SeriesTitle, &sub.Enabled, &sub.CreatedAt, &sub.LastCheckedAt); err != nil {
+		if err := rows.Scan(&sub.SeriesID, &sub.SeriesTitle, &sub.Enabled, &sub.CreatedAt, &sub.LastCheckedAt, &sub.JobCount); err != nil {
 			return nil, err
 		}
 		subs = append(subs, sub)