register.go

func (a *App) Register(c echo.Context, v validator.Validate) (err error) {

	r := new(Response)
	u := new(UserRegister)

	// Bind the user input saved in context to the u(User) variable and validate it
	if err = c.Bind(u); err != nil {
		return echo.NewHTTPError(http.StatusBadRequest, err.Error())
	}
	if err = c.Validate(u); err != nil {
		return err
	}
	if err = v.Struct(u.User); err != nil {
		return err
	}

	user := &cognito.SignUpInput{
		Username: aws.String(u.User.Username),
		Password: aws.String(u.User.Password),
		ClientId: aws.String(a.AppClientID),
		UserAttributes: []*cognito.AttributeType{
			{
				Name:  aws.String("email"),
				Value: aws.String(u.Email),
			},
		},
	}

	secretHash := computeSecretHash(a.AppClientSecret, u.User.Username, a.AppClientID)
	user.SecretHash = aws.String(secretHash)

	// Make signup operation using cognito's api
	_, r.Error = a.CognitoClient.SignUp(user)
	if r.Error != nil {
		return c.JSON(http.StatusInternalServerError, r)
	}

	return c.JSON(http.StatusOK, r)
}