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import React from 'react';
import { auth } from './firebase';

function Login() {
  const login = async () => {
    const provider = new auth.GoogleAuthProvider();
    try {
      await auth().signInWithPopup(provider);
    } catch (e) {}
  };

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try {
  await auth().signInWithPopup(provider);
  const user = await auth().currentUser;
  setUser(user);
} catch(e) {}

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React.useEffect(() => {
  return auth().onAuthStateChanged((user) => {
    if (user) {
      setUser(user);
    } else {
      setUser(null);
    }
  });
}, []);