package com.loginex.myapplication;

import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import com.google.android.gms.auth.api.signin.GoogleSignIn;
import com.google.android.gms.auth.api.signin.GoogleSignInAccount;
import com.google.android.gms.auth.api.signin.GoogleSignInClient;
import com.google.android.gms.auth.api.signin.GoogleSignInOptions;
import com.google.android.gms.common.api.ApiException;
import com.google.android.gms.tasks.OnCompleteListener;
import com.google.android.gms.tasks.Task;
import com.google.firebase.analytics.FirebaseAnalytics;
import com.google.firebase.auth.AuthCredential;
import com.google.firebase.auth.AuthResult;
import com.google.firebase.auth.FirebaseAuth;
import com.google.firebase.auth.FirebaseUser;
import com.google.firebase.auth.GoogleAuthProvider;

public class MainActivity extends AppCompatActivity {
    private FirebaseAuth mAuth;
    Button login_btn;
    Button register_btn;

    EditText login_edit;
    EditText password_edit;
    private static final int RC_SIGN_IN = 9001;
    private GoogleSignInClient mGoogleSignInClient;

    FirebaseAnalytics mFirebaseAnalytics;
    // Configure Google Sign In


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        GoogleSignInOptions gso = new GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)
                .requestIdToken(getString(R.string.default_web_client_id))
                .requestEmail()
                .build();
        mAuth = FirebaseAuth.getInstance();
        register_btn = findViewById(R.id.register_btn);
        login_btn = findViewById(R.id.login_btn);
        login_edit = findViewById(R.id.login_edit);
        password_edit = findViewById(R.id.password_edit);


        final String email = login_edit.getText().toString();
        final String password = password_edit.getText().toString();

        mGoogleSignInClient = GoogleSignIn.getClient(this, gso);
        /*login_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent signInIntent = mGoogleSignInClient.getSignInIntent();
                startActivityForResult(signInIntent, RC_SIGN_IN);
            }
        });*/
        register_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (email != null && password != null) {
                    mAuth.createUserWithEmailAndPassword(email, password)
                            .addOnCompleteListener(MainActivity.this, new OnCompleteListener<AuthResult>() {
                                @Override
                                public void onComplete(@NonNull Task<AuthResult> task) {
                                    if (task.isSuccessful()) {
                                        // Sign in success, update UI with the signed-in user's information
                                        FirebaseUser user = mAuth.getCurrentUser();
                                    } else {
                                        // If sign in fails, display a message to the user.
                                        Toast.makeText(MainActivity.this, "Authentication failed.",
                                                Toast.LENGTH_SHORT).show();
                                    }

                                    // ...
                                }
                            });
                }
            }
        });

        login_btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (email != null && password != null) {
                    mAuth.signInWithEmailAndPassword(email, password)
                            .addOnCompleteListener(MainActivity.this, new OnCompleteListener<AuthResult>() {
                                @Override
                                public void onComplete(@NonNull Task<AuthResult> task) {
                                    if (task.isSuccessful()) {
                                        // Sign in success, update UI with the signed-in user's information
                                        FirebaseUser user = mAuth.getCurrentUser();
                                    } else {
                                        Toast.makeText(getApplicationContext(), "출력할 문자열", Toast.LENGTH_LONG).show();

                                    }

                                    // ...
                                }
                            });
                }
            }
        });
    }


    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        // Result returned from launching the Intent from GoogleSignInApi.getSignInIntent(...);
        if (requestCode == RC_SIGN_IN) {
            Task<GoogleSignInAccount> task = GoogleSignIn.getSignedInAccountFromIntent(data);
            try {
                // Google Sign In was successful, authenticate with Firebase
                GoogleSignInAccount account = task.getResult(ApiException.class);
                firebaseAuthWithGoogle(account);
            } catch (ApiException e) {

            }
        }
    }

    private void firebaseAuthWithGoogle(GoogleSignInAccount acct) {

        AuthCredential credential = GoogleAuthProvider.getCredential(acct.getIdToken(), null);
        mAuth.signInWithCredential(credential)
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>() {
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task) {
                        if (task.isSuccessful()) {

                            FirebaseUser user = mAuth.getCurrentUser();
                            Intent intent = new Intent(MainActivity.this, Main2Activity.class);
                            startActivity(intent);
                        }

                    }
                });
    }
}

어떤걸 바꿔야 되나요..?