phone number verification without Reactive #2

phoneNumberVerify2.swift

    var verifyStep: PhoneNumberVerifyStep = .inputPhoneNumber {
        didSet {
            switch verifyStep {
            ...
            case .succeed:
                verifyNumberTextField.isHidden = true
                verifyButton.isHidden = true
                statusLabel.text = "인증이 완료되었습니다."
            case .failed:
                ...
                statusLabel.text = "번호가 일치하지 않습니다. 유효시간 ..."
            }
        }
    }

    @IBAction func verifyAction(_ sender: Any) {
        guard let phoneNumber = phoneTextField.text, let code = verifyNumberTextField.text else { return }
        api.getUsersVerify(PhoneNumberVerifyParams(phone_number: phoneNumber, code: code))
            .on(value: { _ in
                self.verifyStep = .succeed
            })
            .on(failed: { error in
                self.verifyStep = .failed
            })
    }