add product ingredients

internal/validator/order_ingredient_transaction_validator.go

@@ -0,0 +1,120 @@
+package validator
+
+import (
+	"apskel-pos-be/internal/models"
+	"fmt"
+	"strings"
+
+	"github.com/go-playground/validator/v10"
+)
+
+type OrderIngredientTransactionValidator interface {
+	ValidateCreateOrderIngredientTransactionRequest(req *models.CreateOrderIngredientTransactionRequest) error
+	ValidateUpdateOrderIngredientTransactionRequest(req *models.UpdateOrderIngredientTransactionRequest) error
+	ValidateListOrderIngredientTransactionsRequest(req *models.ListOrderIngredientTransactionsRequest) error
+}
+
+type OrderIngredientTransactionValidatorImpl struct {
+	validator *validator.Validate
+}
+
+func NewOrderIngredientTransactionValidator() OrderIngredientTransactionValidator {
+	v := validator.New()
+	return &OrderIngredientTransactionValidatorImpl{
+		validator: v,
+	}
+}
+
+func (v *OrderIngredientTransactionValidatorImpl) ValidateCreateOrderIngredientTransactionRequest(req *models.CreateOrderIngredientTransactionRequest) error {
+	if err := v.validator.Struct(req); err != nil {
+		var validationErrors []string
+		for _, err := range err.(validator.ValidationErrors) {
+			validationErrors = append(validationErrors, fmt.Sprintf("%s: %s", err.Field(), getValidationMessage(err)))
+		}
+		return fmt.Errorf("validation failed: %s", strings.Join(validationErrors, ", "))
+	}
+
+	// Custom validations
+	if req.GrossQty < req.NetQty {
+		return fmt.Errorf("gross quantity must be greater than or equal to net quantity")
+	}
+
+	expectedWasteQty := req.GrossQty - req.NetQty
+	if req.WasteQty != expectedWasteQty {
+		return fmt.Errorf("waste quantity must equal gross quantity minus net quantity")
+	}
+
+	return nil
+}
+
+func (v *OrderIngredientTransactionValidatorImpl) ValidateUpdateOrderIngredientTransactionRequest(req *models.UpdateOrderIngredientTransactionRequest) error {
+	if err := v.validator.Struct(req); err != nil {
+		var validationErrors []string
+		for _, err := range err.(validator.ValidationErrors) {
+			validationErrors = append(validationErrors, fmt.Sprintf("%s: %s", err.Field(), getValidationMessage(err)))
+		}
+		return fmt.Errorf("validation failed: %s", strings.Join(validationErrors, ", "))
+	}
+
+	// Custom validations for partial updates
+	if req.GrossQty != nil && req.NetQty != nil {
+		if *req.GrossQty < *req.NetQty {
+			return fmt.Errorf("gross quantity must be greater than or equal to net quantity")
+		}
+	}
+
+	if req.GrossQty != nil && req.NetQty != nil && req.WasteQty != nil {
+		expectedWasteQty := *req.GrossQty - *req.NetQty
+		if *req.WasteQty != expectedWasteQty {
+			return fmt.Errorf("waste quantity must equal gross quantity minus net quantity")
+		}
+	}
+
+	return nil
+}
+
+func (v *OrderIngredientTransactionValidatorImpl) ValidateListOrderIngredientTransactionsRequest(req *models.ListOrderIngredientTransactionsRequest) error {
+	if err := v.validator.Struct(req); err != nil {
+		var validationErrors []string
+		for _, err := range err.(validator.ValidationErrors) {
+			validationErrors = append(validationErrors, fmt.Sprintf("%s: %s", err.Field(), getValidationMessage(err)))
+		}
+		return fmt.Errorf("validation failed: %s", strings.Join(validationErrors, ", "))
+	}
+
+	// Custom validations
+	if req.StartDate != nil && req.EndDate != nil {
+		if req.StartDate.After(*req.EndDate) {
+			return fmt.Errorf("start date must be before end date")
+		}
+	}
+
+	return nil
+}
+
+func getValidationMessage(err validator.FieldError) string {
+	switch err.Tag() {
+	case "required":
+		return "is required"
+	case "min":
+		return fmt.Sprintf("must be at least %s", err.Param())
+	case "max":
+		return fmt.Sprintf("must be at most %s", err.Param())
+	case "gt":
+		return fmt.Sprintf("must be greater than %s", err.Param())
+	case "gte":
+		return fmt.Sprintf("must be greater than or equal to %s", err.Param())
+	case "lt":
+		return fmt.Sprintf("must be less than %s", err.Param())
+	case "lte":
+		return fmt.Sprintf("must be less than or equal to %s", err.Param())
+	case "email":
+		return "must be a valid email address"
+	case "uuid":
+		return "must be a valid UUID"
+	case "len":
+		return fmt.Sprintf("must be exactly %s characters long", err.Param())
+	default:
+		return "is invalid"
+	}
+}