voucher

internal/validator/voucher_validator.go

@@ -0,0 +1,41 @@
+package validator
+
+import (
+	"apskel-pos-be/internal/contract"
+	"errors"
+)
+
+type VoucherValidator interface {
+	ValidateListVouchersForSpinRequest(req *contract.ListVouchersForSpinRequest) (error, string)
+	ValidateListVouchersByRowsRequest(req *contract.ListVouchersByRowsRequest) (error, string)
+}
+
+type VoucherValidatorImpl struct{}
+
+func NewVoucherValidator() VoucherValidator {
+	return &VoucherValidatorImpl{}
+}
+
+func (v *VoucherValidatorImpl) ValidateListVouchersForSpinRequest(req *contract.ListVouchersForSpinRequest) (error, string) {
+	if req.Limit < 1 {
+		return errors.New("limit must be at least 1"), "INVALID_LIMIT"
+	}
+
+	if req.Limit > 50 {
+		return errors.New("limit cannot exceed 50"), "INVALID_LIMIT"
+	}
+
+	return nil, ""
+}
+
+func (v *VoucherValidatorImpl) ValidateListVouchersByRowsRequest(req *contract.ListVouchersByRowsRequest) (error, string) {
+	if req.Rows < 1 {
+		return errors.New("rows must be at least 1"), "INVALID_ROWS"
+	}
+
+	if req.Rows > 10 {
+		return errors.New("rows cannot exceed 10"), "INVALID_ROWS"
+	}
+
+	return nil, ""
+}