index.js

const port = process.env.PORT;
const sessionKey = process.env.SESSION_KEY;
const client_ID = process.env.CLIENT_ID;
const client_Secret = process.env.CLIENT_SECRET;

const express = require('express');
const exphbs = require('express-handlebars');
const GoogleStrategy = require('passport-google-oauth').OAuth2Strategy;
const passport = require('passport');
const uuid = require('uuid/v4')

const app = express();

passport.use(new GoogleStrategy(
  {
    clientID: client_ID,
    clientSecret: client_Secret,
    callbackURL: 'http://test.oasisavengers.co.uk:8012/auth/google/callback',
  },
  (token, refreshToken, profile, done) => {
    console.log('Authenticated User: ' + token);
    return done(null, {
      profile: profile,
      token: token
    });
  }
));
passport.serializeUser((user, done) => {
  console.log('Serialising user'+user);
  done(null, user);
});
passport.deserializeUser((user, done) => {
  console.log('Deserialising user');
  done(null, user);
});

// Use Handlebars view engine
app.engine('handlebars', exphbs({defaultLayout: 'main'}));
app.set('view engine', 'handlebars');

app.use(express.static(__dirname + '/public'));
app.use(passport.initialize());
app.use(passport.session());

app.get('/login', (req, res) => {
  console.log('Login page loaded');
  res.render('login', {googleClientId: client_ID, layout: 'basic'});
});

app.get('/auth/google',
  (req, res, next) => { console.log('Auth called'); next(); },
  passport.authenticate('google', {
    scope: ['https://www.googleapis.com/auth/userinfo.profile']
  })
);

app.get('/auth/google/callback',
  (req, res, next) => { console.log('Callback called'); next(); },
  passport.authenticate('google', {failureRedirect:'/login'}),
  (req, res) => {
    req.session.token = req.user.token;
    console.log("Google callback called, redirecting to dashboard"+ req.session.token);
    res.render('dashboard', {name: 'Bex', bex_monzo: '52.06', peet_monzo: '66.43', bex_firstdirect: '150.23', peet_lloyds: '9,998.12', bex_barclaycard: '-500', peet_mbna1: '-9,786.99'});
  }
);

app.get('/' , (req, res) => {
  console.log("in get(/)");
  console.log("Request: " +req.isAuthenticated())
  if (!req.isAuthenticated()) {
    console.log("redirecting to logon page");
    return res.redirect('/login')
  }
  console.log("About to render dashboard");
  res.render('dashboard', {name: 'Bex', bex_monzo: '52.06', peet_monzo: '66.43', bex_firstdirect: '150.23', peet_lloyds: '9,998.12', bex_barclaycard: '-500', peet_mbna1: '-9,786.99'});
});

app.listen(port, function () {
  console.log('Example server listening on port' + port);
});