//View:

private fun attemptLoginRequest(email: String, password: String) {
    if (validateEmail(email, emailInputLayout) && validatePassword(password)) {

        loginViewModel.loginUser(email, password)
    }
}

//View Model:

fun loginUser(email: String, password: String) {
    launch {
        UserRepository.loginRequest(email, password) { code ->
            view.evaluateStatusCode(code)
        }
    }
}

//Repository:

suspend fun loginRequest(email: String, password: String, response: (Int) -> Unit) {
    val dataResponse = Api.client.login(
        UserLoginRequest(
            email = email,
            password = password
        )
    ).await()

    response(dataResponse.code())

    if (dataResponse.isSuccessful) {
        val tokens = dataResponse.body()?.responseData?.tokens
        AppPreferences.putAccessToken(tokens?.accessToken ?: "", setAccessTokenExpireDate())
        AppPreferences.putRefreshToken(tokens?.refreshToken ?: "", setRefreshTokenExpireDate())
    }
}