Full-Stack Web Development with Vue.js and Node

Building OAuth Strategies with passport.js Chapter 7

The callback we just added is http://127.0.0.1:8081/login/google/return, which

we have to define. The configuration is followed by a function that takes the following four

parameters:

accessToken

refreshToken

profile

cb (callback)

Upon a successful request, our application will get redirected to the profile page, which

we are yet to define.

Adding necessary routes for Google login

Now, let's go ahead and add the necessary routes, when we click on the login button and
when we receive the callback from Google. In the same file, google.js, add the following

routes:

const User = require('../models/User');

const passport = require('passport');

const config = require('./../config/Config');

const Strategy = require('passport-google-oauth20').OAuth2Strategy;

module.exports.controller = (app) => {

// google strategy

passport.use(new Strategy({

clientID: config.GOOGLE_APP_ID,

clientSecret: config.GOOGLE_APP_SECRET,

callbackURL: '/login/google/return',

},

(accessToken, refreshToken, profile, cb) => {

// Handle google login

}));

app.get('/login/google',

passport.authenticate('google', { scope: ['email'] }));

app.get('/login/google/return',

passport.authenticate('google', { failureRedirect: '/login' }),

(req, res) => {

res.redirect('/');

});

};