using System;
using System.Collections;
using System.Collections.Generic;
  using System.Threading.Tasks;
using Firebase;
using Firebase.Auth;
using Google;
  using UnityEngine;
  using UnityEngine.UI;

  public class GoogleLoginManager : MonoBehaviour {
    public string webClientId = "871331112347-3qpmns59teudhm5qugl4kiau6eo1efm2.apps.googleusercontent.com";
    private FirebaseAuth auth;
    private GoogleSignInConfiguration config;
    public NewLoginManager loginManager;
    public AccountSettings accountSettings;

    void Awake(){
      config = new GoogleSignInConfiguration{WebClientId=webClientId, RequestEmail=true, RequestIdToken=true};
      CheckFirebaseDependencies();
    }

    void CheckFirebaseDependencies(){
      FirebaseApp.CheckAndFixDependenciesAsync().ContinueWith(task=>{
        if(task.IsCompleted){
          if(task.Result == DependencyStatus.Available){
            auth = FirebaseAuth.DefaultInstance;
          }else{
            Debug.Log("googlesign:Firebase Deps missing, " + task.Result.ToString());
          }
        }else{
          Debug.Log("googlesign:Dependency test not completed " + task.Exception.Message);
        }
      }); 
    }

    public void SignInWithGoogle(){OnSignIn();}
    public void SignOutFromGoogle(){OnSignOut();}

    private void OnSignIn(){
      GoogleSignIn.Configuration = config;
      GoogleSignIn.Configuration.UseGameSignIn = false;
      GoogleSignIn.Configuration.RequestIdToken = true;
      Debug.Log("googlesign:Call Signin");

      GoogleSignIn.DefaultInstance.SignIn().ContinueWith(AuthDone);
    }
    private void OnSignOut(){
      GoogleSignIn.DefaultInstance.SignOut();
    }
    public void OnDisconnect(){
      GoogleSignIn.DefaultInstance.Disconnect();
    }

    public static string loggedEmail;
    void AuthDone(Task<GoogleSignInUser> task){
      if(task.IsFaulted){
        using(IEnumerator<Exception> enumerator = task.Exception.InnerExceptions.GetEnumerator()){
          if(enumerator.MoveNext()){
            GoogleSignIn.SignInException error = (GoogleSignIn.SignInException)enumerator.Current;
            Debug.Log("googlesign:Got error: " + error.Status + " " + error.Message);
          }else{
            Debug.Log("googlesign:Unexpected Exception : " + task.Exception);
          }
        }
      }else if(task.IsCanceled){
        Debug.Log("googlesign:User aborted");
      }else{
        Debug.Log("googlesign:User logged");
        Debug.Log($"user={task.Result.DisplayName}, email={task.Result.Email}");
        loggedEmail = task.Result.Email;
        StartCoroutine(OnSignDone(task.Result.DisplayName));

      }
    }

    IEnumerator OnSignDone(string displayName){
      PlayerPrefs.SetString("displayname", displayName);
      PlayerPrefs.Save();
      yield return new WaitForSeconds(0.2f);

      if(loginManager != null){loginManager.OnGoogleSignComplete();}

      if(accountSettings != null){
        accountSettings.GoogleSignComplete();
      }
    }
  }