using Cysharp.Threading.Tasks;
using Gs2.Core.Model;
using Gs2.Unity.Core;
using Gs2.Unity.Util;
using UnityEngine;

public sealed class AdventureLogin : MonoBehaviour
{
    [SerializeField] private string clientId = "YOUR_CLIENT_ID";
    [SerializeField] private string clientSecret = "YOUR_CLIENT_SECRET";
    [SerializeField] private string accountNamespace = "adventure-account";
    [SerializeField] private string accountSlot = "main";

    public Gs2Domain Gs2 { get; private set; }
    public GameSession Session { get; private set; }
    private bool busy;
    private string message = "ログインしてください";
    private string SaveKey => $"adventure.{clientId}.{accountNamespace}.{accountSlot}";

    private void OnGUI()
    {
        GUILayout.BeginArea(new Rect(20, 20, 650, 170), GUI.skin.box);
        GUILayout.Label(message);
        GUI.enabled = !busy && Session == null;
        GUILayout.Label("保存先（main / practice など）");
        accountSlot = GUILayout.TextField(accountSlot);
        if (GUILayout.Button("ログイン")) Login().Forget();
        GUI.enabled = true;
        GUILayout.EndArea();
    }

    private async UniTask Login()
    {
        busy = true;
        message = "ログイン中です";
        try
        {
            if (Gs2 == null)
            {
                Gs2 = await Gs2Client.CreateAsync(
                    new BasicGs2Credential(clientId, clientSecret), Region.ApNortheast1);
            }

            var userId = PlayerPrefs.GetString(SaveKey + ".userId", "");
            var password = PlayerPrefs.GetString(SaveKey + ".password", "");
            if (string.IsNullOrEmpty(userId) != string.IsNullOrEmpty(password))
            {
                message = "保存したアカウント情報がそろっていません。保存先を確認してください";
                return;
            }
            if (string.IsNullOrEmpty(userId))
            {
                var create = await Gs2.Account.Namespace(accountNamespace).CreateAsync();
                var model = await create.ModelAsync();
                userId = model.UserId;
                password = model.Password;
                PlayerPrefs.SetString(SaveKey + ".userId", userId);
                PlayerPrefs.SetString(SaveKey + ".password", password);
                PlayerPrefs.Save();
            }

            var login = await Gs2.LoginAsync(
                new Gs2AccountAuthenticator(new AccountSetting
                {
                    accountNamespaceName = accountNamespace,
                    keyId = "grn:gs2:{region}:{ownerId}:key:default:key:default"
                }), userId, password);
            Session = login;
            message = "ログインしました。プレイヤー ID: " + Session.AccessToken.UserId;
        }
        catch (System.Exception error) { message = "接続できませんでした: " + error.GetType().Name; }
        finally { busy = false; }
    }
}