feat: add feature register with custom validation

dto/auth_dto.go

@@ -1,5 +1,10 @@
 package dto
 
+import (
+	"regexp"
+	"strings"
+)
+
 type LoginDTO struct {
 	Identifier string `json:"identifier" validate:"required"`
 	Password   string `json:"password" validate:"required,min=6"`
@@ -9,3 +14,85 @@ type UserResponseWithToken struct {
 	UserID string `json:"user_id"`
 	Token  string `json:"token"`
 }
+
+type RegisterDTO struct {
+	Username        string `json:"username"`
+	Name            string `json:"name"`
+	Phone           string `json:"phone"`
+	Email           string `json:"email"`
+	Password        string `json:"password"`
+	ConfirmPassword string `json:"confirm_password"`
+}
+
+type UserResponseDTO struct {
+	ID            string `json:"id"`
+	Username      string `json:"username"`
+	Name          string `json:"name"`
+	Phone         string `json:"phone"`
+	Email         string `json:"email"`
+	EmailVerified bool   `json:"emailVerified"`
+	CreatedAt     string `json:"createdAt"`
+	UpdatedAt     string `json:"updatedAt"`
+}
+
+func (r *RegisterDTO) Validate() (map[string][]string, bool) {
+	errors := make(map[string][]string)
+
+	if strings.TrimSpace(r.Username) == "" {
+		errors["username"] = append(errors["username"], "Username is required")
+	}
+	if strings.TrimSpace(r.Name) == "" {
+		errors["name"] = append(errors["name"], "Name is required")
+	}
+
+	if strings.TrimSpace(r.Phone) == "" {
+		errors["phone"] = append(errors["phone"], "Phone number is required")
+	} else if !IsValidPhoneNumber(r.Phone) {
+		errors["phone"] = append(errors["phone"], "Invalid phone number format. Use +62 followed by 9-13 digits")
+	}
+
+	if strings.TrimSpace(r.Email) == "" {
+		errors["email"] = append(errors["email"], "Email is required")
+	} else if !IsValidEmail(r.Email) {
+		errors["email"] = append(errors["email"], "Invalid email format")
+	}
+
+	if strings.TrimSpace(r.Password) == "" {
+		errors["password"] = append(errors["password"], "Password is required")
+	} else if !IsValidPassword(r.Password) {
+		errors["password"] = append(errors["password"], "Password must be at least 8 characters long and contain at least one number")
+	}
+
+	if strings.TrimSpace(r.ConfirmPassword) == "" {
+		errors["confirm_password"] = append(errors["confirm_password"], "Confirm password is required")
+	} else if r.Password != r.ConfirmPassword {
+		errors["confirm_password"] = append(errors["confirm_password"], "Password and confirm password do not match")
+	}
+
+	if len(errors) > 0 {
+		return errors, false
+	}
+
+	return nil, true
+}
+
+func IsValidPhoneNumber(phone string) bool {
+
+	re := regexp.MustCompile(`^\+62\d{9,13}$`)
+	return re.MatchString(phone)
+}
+
+func IsValidEmail(email string) bool {
+
+	re := regexp.MustCompile(`^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$`)
+	return re.MatchString(email)
+}
+
+func IsValidPassword(password string) bool {
+	if len(password) < 8 {
+		return false
+	}
+
+	re := regexp.MustCompile(`\d`)
+	return re.MatchString(password)
+}

internal/handler/auth_handler.go

@@ -39,6 +39,48 @@ func (h *UserHandler) Login(c *fiber.Ctx) error {
 	return utils.LogResponse(c, user, "Login successful")
 }
 
+func (h *UserHandler) Register(c *fiber.Ctx) error {
+	var registerDTO dto.RegisterDTO
+	if err := c.BodyParser(&registerDTO); err != nil {
+		return utils.ValidationErrorResponse(c, map[string][]string{"body": {"Invalid body"}})
+	}
+
+	errors, valid := registerDTO.Validate()
+
+	if !valid {
+
+		return utils.ValidationErrorResponse(c, errors)
+	}
+
+	user, err := h.UserService.Register(registerDTO)
+	if err != nil {
+		return utils.ErrorResponse(c, err.Error())
+	}
+
+	createdAt, err := utils.FormatDateToIndonesianFormat(user.CreatedAt)
+	if err != nil {
+		return utils.InternalServerErrorResponse(c, "Error formatting created date")
+	}
+
+	updatedAt, err := utils.FormatDateToIndonesianFormat(user.UpdatedAt)
+	if err != nil {
+		return utils.InternalServerErrorResponse(c, "Error formatting updated date")
+	}
+
+	userResponse := dto.UserResponseDTO{
+		ID:            user.ID,
+		Username:      user.Username,
+		Name:          user.Name,
+		Phone:         user.Phone,
+		Email:         user.Email,
+		EmailVerified: user.EmailVerified,
+		CreatedAt:     createdAt,
+		UpdatedAt:     updatedAt,
+	}
+
+	return utils.LogResponse(c, userResponse, "Registration successful")
+}
+
 func (h *UserHandler) Logout(c *fiber.Ctx) error {
 
 	token := c.Get("Authorization")

internal/repositories/auth_repo.go

@@ -7,6 +7,7 @@ import (
 
 type UserRepository interface {
 	FindByEmailOrUsernameOrPhone(identifier string) (*model.User, error)
+	Create(user *model.User) error
 }
 
 type userRepository struct {
@@ -25,3 +26,11 @@ func (r *userRepository) FindByEmailOrUsernameOrPhone(identifier string) (*model
 	}
 	return &user, nil
 }
+
+func (r *userRepository) Create(user *model.User) error {
+	err := r.DB.Create(user).Error
+	if err != nil {
+		return err
+	}
+	return nil
+}

internal/services/auth_service.go

@@ -14,6 +14,7 @@ import (
 
 type UserService interface {
 	Login(credentials dto.LoginDTO) (*dto.UserResponseWithToken, error)
+	Register(user dto.RegisterDTO) (*model.User, error)
 }
 
 type userService struct {
@@ -73,4 +74,31 @@ func (s *userService) generateJWT(user *model.User) (string, error) {
 func CheckPasswordHash(password, hashedPassword string) bool {
 	err := bcrypt.CompareHashAndPassword([]byte(hashedPassword), []byte(password))
 	return err == nil
-}
+}
+
+func (s *userService) Register(user dto.RegisterDTO) (*model.User, error) {
+
+	if user.Password != user.ConfirmPassword {
+		return nil, fmt.Errorf("password and confirm password do not match")
+	}
+
+	hashedPassword, err := bcrypt.GenerateFromPassword([]byte(user.Password), bcrypt.DefaultCost)
+	if err != nil {
+		return nil, fmt.Errorf("failed to hash password: %v", err)
+	}
+
+	newUser := model.User{
+		Username: user.Username,
+		Name:     user.Name,
+		Phone:    user.Phone,
+		Email:    user.Email,
+		Password: string(hashedPassword),
+	}
+
+	err = s.UserRepo.Create(&newUser)
+	if err != nil {
+		return nil, fmt.Errorf("failed to create user: %v", err)
+	}
+
+	return &newUser, nil
+}

presentation/auth_route.go

@@ -23,5 +23,6 @@ func AuthRouter(app *fiber.App) {
 	userHandler := handler.NewUserHandler(userService)
 
 	api.Post("/login", userHandler.Login)
+	api.Post("/register", userHandler.Register)
 	api.Post("/logout", userHandler.Logout)
 }