Add expense CRUD

internal/validator/expense_validator.go

@@ -0,0 +1,125 @@
+package validator
+
+import (
+	"errors"
+	"strings"
+
+	"apskel-pos-be/internal/constants"
+	"apskel-pos-be/internal/contract"
+
+	"github.com/google/uuid"
+)
+
+type ExpenseValidator interface {
+	ValidateCreateExpenseRequest(req *contract.CreateExpenseRequest) (error, string)
+	ValidateUpdateExpenseRequest(req *contract.UpdateExpenseRequest) (error, string)
+	ValidateListExpenseRequest(req *contract.ListExpenseRequest) (error, string)
+}
+
+type ExpenseValidatorImpl struct{}
+
+func NewExpenseValidator() *ExpenseValidatorImpl {
+	return &ExpenseValidatorImpl{}
+}
+
+func (v *ExpenseValidatorImpl) ValidateCreateExpenseRequest(req *contract.CreateExpenseRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if strings.TrimSpace(req.Receiver) == "" {
+		return errors.New("receiver is required"), constants.MissingFieldErrorCode
+	}
+
+	if strings.TrimSpace(req.TransactionDate) == "" {
+		return errors.New("transaction_date is required"), constants.MissingFieldErrorCode
+	}
+
+	if strings.TrimSpace(req.CodeNumber) == "" {
+		return errors.New("code_number is required"), constants.MissingFieldErrorCode
+	}
+
+	if strings.TrimSpace(req.ChartOfAccountID) == "" {
+		return errors.New("chart_of_account_id is required"), constants.MissingFieldErrorCode
+	}
+
+	if _, err := uuid.Parse(req.ChartOfAccountID); err != nil {
+		return errors.New("chart_of_account_id must be a valid UUID"), constants.MalformedFieldErrorCode
+	}
+
+	if strings.TrimSpace(req.OutletID) == "" {
+		return errors.New("outlet_id is required"), constants.MissingFieldErrorCode
+	}
+
+	if _, err := uuid.Parse(req.OutletID); err != nil {
+		return errors.New("outlet_id must be a valid UUID"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Total <= 0 {
+		return errors.New("total must be greater than 0"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Tax < 0 {
+		return errors.New("tax cannot be negative"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *ExpenseValidatorImpl) ValidateUpdateExpenseRequest(req *contract.UpdateExpenseRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.Receiver != nil && strings.TrimSpace(*req.Receiver) == "" {
+		return errors.New("receiver cannot be empty"), constants.MalformedFieldErrorCode
+	}
+
+	if req.CodeNumber != nil && strings.TrimSpace(*req.CodeNumber) == "" {
+		return errors.New("code_number cannot be empty"), constants.MalformedFieldErrorCode
+	}
+
+	if req.ChartOfAccountID != nil {
+		if strings.TrimSpace(*req.ChartOfAccountID) == "" {
+			return errors.New("chart_of_account_id cannot be empty"), constants.MalformedFieldErrorCode
+		}
+		if _, err := uuid.Parse(*req.ChartOfAccountID); err != nil {
+			return errors.New("chart_of_account_id must be a valid UUID"), constants.MalformedFieldErrorCode
+		}
+	}
+
+	if req.OutletID != nil {
+		if strings.TrimSpace(*req.OutletID) == "" {
+			return errors.New("outlet_id cannot be empty"), constants.MalformedFieldErrorCode
+		}
+		if _, err := uuid.Parse(*req.OutletID); err != nil {
+			return errors.New("outlet_id must be a valid UUID"), constants.MalformedFieldErrorCode
+		}
+	}
+
+	if req.Total != nil && *req.Total <= 0 {
+		return errors.New("total must be greater than 0"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Tax != nil && *req.Tax < 0 {
+		return errors.New("tax cannot be negative"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}
+
+func (v *ExpenseValidatorImpl) ValidateListExpenseRequest(req *contract.ListExpenseRequest) (error, string) {
+	if req == nil {
+		return errors.New("request body is required"), constants.MissingFieldErrorCode
+	}
+
+	if req.Page < 1 {
+		return errors.New("page must be at least 1"), constants.MalformedFieldErrorCode
+	}
+
+	if req.Limit < 1 || req.Limit > 100 {
+		return errors.New("limit must be between 1 and 100"), constants.MalformedFieldErrorCode
+	}
+
+	return nil, ""
+}