行为映射

type SendOTPInput struct {
	Identifier string
	Scene      otpdomian.OTPScene
	Channel    otpdomian.OTPChannel

	CaptchaKey string
	Captcha    string
}

func (s *service) Send(ctx context.Context, in SendOTPInput) error {

	ok, _ := s.captcha.Verify(in.CaptchaKey, in.Captcha)
	if !ok {
		return resp.CAPTCHA_INVALID
	}

	// 行为映射
	handlers := map[otpdomian.OTPScene]map[otpdomian.OTPChannel]handlerFunc{
		otpdomian.OTPRegister: {
			otpdomian.OTPEmail: s.handleOTPRegisterByEmail,
			otpdomian.OTPPhone: s.handleOTPRegisterByPhone,
		},
		otpdomian.OTPLogin: {
			otpdomian.OTPEmail: s.handleOTPLoginByEmail,
			otpdomian.OTPPhone: s.handleOTPLoginByPhone,
		},
		otpdomian.OTPReset: {
			otpdomian.OTPEmail: s.handleOTPResetByEmail,
			otpdomian.OTPPhone: s.handleOTPResetByPhone,
		},
	}

	sceneHandlers, ok := handlers[in.Scene]
	if !ok {
		return resp.OTP_SCENE_NOT_SUPPORTED
	}

	handler, ok := sceneHandlers[in.Channel]
	if !ok {
		return resp.OTP_CHANNEL_NOT_SUPPORTED
	}

	return handler(ctx, in.Identifier)

}

// ================================ handleXXX = implementation detail（实现细节） ================================

type handlerFunc func(ctx context.Context, identifier string) error

func (s *service) handleOTPRegisterByEmail(ctx context.Context, identifier string) error {
	return nil
}

func (s *service) handleOTPRegisterByPhone(ctx context.Context, identifier string) error {
	return nil
}

func (s *service) handleOTPLoginByEmail(ctx context.Context, identifier string) error {
	return nil
}

func (s *service) handleOTPLoginByPhone(ctx context.Context, identifier string) error {
	return nil
}

func (s *service) handleOTPResetByEmail(ctx context.Context, identifier string) error {
	return nil
}

func (s *service) handleOTPResetByPhone(ctx context.Context, identifier string) error {
	return nil
}