android で amplify を使う

Amplify.Auth.signIn(
    username,
    password,
    { result ->
        Log.i(
            "AuthQuickstart",
            if (result.isSignInComplete) "Sign in succeeded" else "Sign in not complete"
        )
    },
    { error -> Log.e("AuthQuickstart", error.toString()) }
)

package com.example.appsyncsample.app.repository

import com.amplifyframework.core.Amplify
import kotlin.coroutines.resume
import kotlin.coroutines.suspendCoroutine

sealed class Result<out R> {
    data class Success<out T>(val data: T) : Result<T>()
    data class Error(val exception: Exception) : Result<Nothing>()
}

class LoginRepository {
    suspend fun makeLoginRequest(username: String, password: String): Result<String> {
        return suspendCoroutine { continuation ->
            Amplify.Auth.signIn(
                username,
                password,
                { res ->
                    val result =
                        Result.Success(if (res.isSignInComplete) "Sign in succeeded" else "Sign in not complete")
                    continuation.resume(result)
                },
                { error ->
                    val result = Result.Error(Exception(error.toString()))
                    continuation.resume(result)
                }
            )
        }
    }
}