Add QR Payment

internal/repository/payment/payment.go

@@ -72,6 +72,10 @@ func (r *PaymentRepository) FindByOrderAndPartnerID(ctx context.Context, orderID
 // FindByReferenceID retrieves a payment record by its reference ID
 func (r *PaymentRepository) FindByReferenceID(ctx context.Context, db *gorm.DB, referenceID string) (*entity.Payment, error) {
 	payment := new(entity.Payment)
+	if db == nil {
+		db = r.db
+	}
+
 	if err := db.WithContext(ctx).Where("reference_id = ?", referenceID).First(payment).Error; err != nil {
 		logger.ContextLogger(ctx).Error("error when finding payment by reference ID", zap.Error(err))
 		return nil, err