Implement phone number validation for customer and user registration and updates

Added functionality to check for existing customers and users by phone number during registration and updates. Updated the handler, service, and repository layers to include phone number checks, ensuring unique phone numbers across customers and users.

internal/customer/handler.go

@@ -55,6 +55,7 @@ func (h *Handler) CreateCustomer(c echo.Context) error {
 	if err != nil {
 		if err.Error() == "customer with this email already exists" ||
 			err.Error() == "customer with this username already exists" ||
+			err.Error() == "customer with this phone number already exists" ||
 			err.Error() == "company with this name already exists" ||
 			err.Error() == "company with this registration number already exists" ||
 			err.Error() == "company with this tax ID already exists" {
@@ -128,6 +129,7 @@ func (h *Handler) UpdateCustomer(c echo.Context) error {
 		}
 		if err.Error() == "customer with this email already exists" ||
 			err.Error() == "customer with this username already exists" ||
+			err.Error() == "customer with this phone number already exists" ||
 			err.Error() == "company with this name already exists" ||
 			err.Error() == "company with this registration number already exists" ||
 			err.Error() == "company with this tax ID already exists" {

internal/customer/repository.go

@@ -25,6 +25,7 @@ type Repository interface {
 	GetByID(ctx context.Context, id string) (*Customer, error)
 	GetByEmail(ctx context.Context, email string) (*Customer, error)
 	GetByUsername(ctx context.Context, username string) (*Customer, error)
+	GetByPhone(ctx context.Context, phone string) (*Customer, error)
 	GetByIDs(ctx context.Context, ids []string) ([]Customer, error)
 	GetByRole(ctx context.Context, role CustomerRole) ([]Customer, error)
 	GetByCompanies(ctx context.Context, companies []string) ([]Customer, error)
@@ -50,6 +51,8 @@ func NewRepository(mongoManager *orm.ConnectionManager, logger logger.Logger) Re
 	indexes := []orm.Index{
 		*orm.CreateUniqueIndex("username_idx", bson.D{{Key: "username", Value: 1}}),
 		*orm.CreateTextIndex("search_idx", "email", "username"),
+		*orm.CreateUniqueIndex("phone_idx", bson.D{{Key: "phone", Value: 1}}).
+			WithPartialFilterExpression(bson.M{"phone": bson.M{"$type": "string", "$ne": ""}}),
 	}
 
 	// Create indexes
@@ -166,6 +169,24 @@ func (r *customerRepository) GetByEmail(ctx context.Context, email string) (*Cus
 	return customer, nil
 }
 
+// GetByPhone retrieves a customer by phone number
+func (r *customerRepository) GetByPhone(ctx context.Context, phone string) (*Customer, error) {
+	filter := bson.M{"phone": phone}
+	customer, err := r.ormRepo.FindOne(ctx, filter)
+	if err != nil {
+		if errors.Is(err, orm.ErrDocumentNotFound) {
+			return nil, ErrCustomerNotFound
+		}
+		r.logger.Error("Failed to get customer by phone", map[string]interface{}{
+			"error": err.Error(),
+			"phone": phone,
+		})
+		return nil, err
+	}
+
+	return customer, nil
+}
+
 // GetByUsername retrieves a customer by username
 func (r *customerRepository) GetByUsername(ctx context.Context, username string) (*Customer, error) {
 	filter := bson.M{"username": username}

internal/customer/service.go

@@ -95,6 +95,13 @@ func (s *customerService) Register(ctx context.Context, form *CreateCustomerForm
 		return nil, errors.New("customer with this username already exists")
 	}
 
+	if form.Phone != nil && *form.Phone != "" {
+		existingCustomer, _ = s.repository.GetByPhone(ctx, *form.Phone)
+		if existingCustomer != nil {
+			return nil, errors.New("customer with this phone number already exists")
+		}
+	}
+
 	// Check validator
 	if !s.validator.IsValidUsername(form.Username) {
 		return nil, errors.New("invalid username format")
@@ -373,6 +380,12 @@ func (s *customerService) Update(ctx context.Context, id string, form *UpdateCus
 	}
 
 	if form.Phone != nil && (customer.Phone == nil || *form.Phone != *customer.Phone) {
+		if *form.Phone != "" {
+			existingCustomer, _ := s.repository.GetByPhone(ctx, *form.Phone)
+			if existingCustomer != nil && existingCustomer.ID.Hex() != id {
+				return nil, errors.New("customer with this phone number already exists")
+			}
+		}
 		customer.Phone = form.Phone
 		infoChanged = true
 	}