Trying to use Google Oauth2 with Passportjs in Graphql-Yoga Server - node.js

Question

I thought I followed all of the docs correctly to implement this, however, I am getting a TokenError: Bad Request that has the error message invalid_grant.
My server is super simple:
require('dotenv').config();
import createServer from './createServer';
const passport = require('passport');
const GoogleStrategy = require('passport-google-oauth20').Strategy;
const server = createServer();
passport.use(
new GoogleStrategy(
{
clientID: process.env.GOOGLE_CLIENT_ID,
clientSecret: process.env.GOOGLE_CLIENT_SECRET,
callbackURL: 'http://localhost:4000/auth/callback',
},
(accessToken, refreshToken, profile, cb) => {
console.log(accessToken);
console.log(refreshToken);
console.log(profile);
cb(null, profile);
},
),
);
server.express.use(
'/auth',
passport.authenticate('google', {
scope: ['email', 'profile'],
session: false,
}),
);
server.express.use(
'/auth/callback',
passport.authenticate('google', {
successRedirect: 'http://localhost:3000/authenticate',
failureRedirect: 'http://localhost:3000/authenticate',
}),
);
server.start(
{
cors: {
credentials: true,
origin: 'http://localhost:3000',
},
},
() => console.log('Server is running on http://localhost:4000'),
);
Is this a problem with the way that I have setup Google in the cloud platform? I can't figure out where I went wrong. My callback is correctly setup. I'm not sure where else to look for a mistake?
Another thing that is confusing is that the GoogleStategy is console logging the user profile and the access token that is returned. I am guessing that the error comes when the callback route tries to verify the code from the URL. Can anyone point me in a direction to look to better troubleshoot this? Thanks in advance.

Answer 1

I found a solution that works for me, but I am still unclear if it is "best-practice" or not. I would love someone with more GraphQL experience to chime in.
I followed the directions in the docs to authenticate in the front-end: https://developers.google.com/identity/sign-in/web/backend-auth
Then I wrote a query called isAuthenticated on the back-end that I can use to verify the token.
async isAuthenticated(_: any, { token }) {
if(!token) {
return null;
}
const ticket = await client.verifyIdToken({
idToken: token,
audience: process.env.GOOGLE_CLIENT_ID,
});
return payload;
},
I use a React component to check the token in localStorage before rendering any protected routes. This is working for me.