Add users

internal/transformer/user_transformer.go

@@ -10,6 +10,7 @@ func CreateUserRequestToEntity(req *contract.CreateUserRequest, passwordHash str
 		return nil
 	}
 	return &entities.User{
+		Username:     req.Email,
 		Name:         req.Name,
 		Email:        req.Email,
 		PasswordHash: passwordHash,
@@ -26,6 +27,7 @@ func UpdateUserEntity(existing *entities.User, req *contract.UpdateUserRequest)
 	}
 	if req.Email != nil {
 		existing.Email = *req.Email
+		existing.Username = *req.Email
 	}
 	if req.IsActive != nil {
 		existing.IsActive = *req.IsActive
@@ -40,6 +42,7 @@ func EntityToContract(user *entities.User) *contract.UserResponse {
 
 	resp := &contract.UserResponse{
 		ID:        user.ID,
+		Username:  user.Username,
 		Name:      user.Name,
 		Email:     user.Email,
 		IsActive:  user.IsActive,