init

internal/validator/payment_method_validator.go

@@ -0,0 +1,108 @@
+package validator
+
+import (
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+
+	"github.com/go-playground/validator/v10"
+)
+
+type PaymentMethodValidator interface {
+	ValidateCreatePaymentMethodRequest(req *contract.CreatePaymentMethodRequest) (error, string)
+	ValidateUpdatePaymentMethodRequest(req *contract.UpdatePaymentMethodRequest) (error, string)
+	ValidateListPaymentMethodsRequest(req *contract.ListPaymentMethodsRequest) (error, string)
+}
+
+type PaymentMethodValidatorImpl struct {
+	validate *validator.Validate
+}
+
+func NewPaymentMethodValidator() PaymentMethodValidator {
+	return &PaymentMethodValidatorImpl{
+		validate: validator.New(),
+	}
+}
+
+func (v *PaymentMethodValidatorImpl) ValidateCreatePaymentMethodRequest(req *contract.CreatePaymentMethodRequest) (error, string) {
+	if err := v.validate.Struct(req); err != nil {
+		return err, constants.ValidationErrorCode
+	}
+
+	// Additional business logic validation
+	if req.Name == "" {
+		return constants.ErrPaymentMethodNameRequired, constants.MissingFieldErrorCode
+	}
+
+	if req.Type == "" {
+		return constants.ErrPaymentMethodTypeRequired, constants.MissingFieldErrorCode
+	}
+
+	// Validate payment method type
+	if !v.isValidPaymentMethodType(req.Type) {
+		return constants.ErrInvalidPaymentMethodType, constants.InvalidFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *PaymentMethodValidatorImpl) ValidateUpdatePaymentMethodRequest(req *contract.UpdatePaymentMethodRequest) (error, string) {
+	if err := v.validate.Struct(req); err != nil {
+		return err, constants.ValidationErrorCode
+	}
+
+	// Additional business logic validation
+	if req.Name != nil && *req.Name == "" {
+		return constants.ErrPaymentMethodNameRequired, constants.MissingFieldErrorCode
+	}
+
+	if req.Type != nil && *req.Type == "" {
+		return constants.ErrPaymentMethodTypeRequired, constants.MissingFieldErrorCode
+	}
+
+	// Validate payment method type if provided
+	if req.Type != nil && !v.isValidPaymentMethodType(*req.Type) {
+		return constants.ErrInvalidPaymentMethodType, constants.InvalidFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *PaymentMethodValidatorImpl) ValidateListPaymentMethodsRequest(req *contract.ListPaymentMethodsRequest) (error, string) {
+	if err := v.validate.Struct(req); err != nil {
+		return err, constants.ValidationErrorCode
+	}
+
+	// Additional business logic validation
+	if req.Page < 1 {
+		return constants.ErrInvalidPageNumber, constants.InvalidFieldErrorCode
+	}
+
+	if req.Limit < 1 || req.Limit > 100 {
+		return constants.ErrInvalidLimit, constants.InvalidFieldErrorCode
+	}
+
+	// Validate payment method type if provided
+	if req.Type != nil && !v.isValidPaymentMethodType(*req.Type) {
+		return constants.ErrInvalidPaymentMethodType, constants.InvalidFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *PaymentMethodValidatorImpl) isValidPaymentMethodType(paymentMethodType string) bool {
+	validTypes := []string{
+		string(constants.PaymentMethodTypeCash),
+		string(constants.PaymentMethodTypeCard),
+		string(constants.PaymentMethodTypeDigitalWallet),
+		string(constants.PaymentMethodTypeQR),
+		string(constants.PaymentMethodTypeEDC),
+	}
+
+	for _, validType := range validTypes {
+		if paymentMethodType == validType {
+			return true
+		}
+	}
+
+	return false
+}