Page 339 - MDP2022-3

});
}

};

export default reportWebVitals;

import firebase from "firebase/compat/app";

import "firebase/compat/auth";
import "firebase/compat/firestore";

// For Firebase JS SDK v7.20.0 and later, measurementId is optional
const firebaseConfig = {
//api 키라서 github에는 작성 불가

};

//파이어베이스 구현

const app = firebase.initializeApp(firebaseConfig);
const auth = app.auth();

const db = app.firestore();
const googleProvider = new firebase.auth.GoogleAuthProvider();
// Sign in and check or create account in firestore

const signInWithGoogle = async () => {
try {

const response = await auth.signInWithPopup(googleProvider);
console.log(response.user);
const user = response.user;

console.log(`User ID - ${user.uid}`);
const querySnapshot = await db

.collection("users")
.where("uid", "==", user.uid)
.get();

if (querySnapshot.docs.length === 0) {
// create a new user

await db.collection("users").add({
uid: user.uid,
enrolledClassrooms: [],