f

internal/infrastructure/database/repositories/subordinate/gorm_subordinate_repository.go

@@ -52,6 +52,22 @@ func (r *GormSubordinateRepository) FindInvitationByTokenHash(ctx context.Contex
 	return &inv, nil
 }
 
+// FindActiveInvitationByParent 查询主账号当前可用的固定邀请码（pending 且未过期）
+func (r *GormSubordinateRepository) FindActiveInvitationByParent(ctx context.Context, parentUserID string) (*entities.SubordinateInvitation, error) {
+	var inv entities.SubordinateInvitation
+	err := r.withCtx(ctx).
+		Where("parent_user_id = ? AND status = ? AND expires_at > ?", parentUserID, entities.InvitationStatusPending, time.Now()).
+		Order("created_at ASC").
+		First(&inv).Error
+	if err != nil {
+		if errors.Is(err, gorm.ErrRecordNotFound) {
+			return nil, nil
+		}
+		return nil, err
+	}
+	return &inv, nil
+}
+
 // FindInvitationByID 按ID
 func (r *GormSubordinateRepository) FindInvitationByID(ctx context.Context, id string) (*entities.SubordinateInvitation, error) {
 	var inv entities.SubordinateInvitation