GoogleOauth2.0 First implementation

First try for GoogleOauth2.0

express-server/routes/index.js

@@ -1,9 +1,55 @@
 var express = require('express');
 var router = express.Router();
 
+// GoogleOauth2.0
+passport = require('passport'),
+auth = require('../public/login/auth');
+auth(passport);
+router.use(passport.initialize());
+
+cookieParser = require('cookie-parser'),
+cookieSession = require('cookie-session');
+
+router.use(cookieSession({
+  name: 'session',
+  keys: ['aoisdzflkudheowe777elkjv']
+}));
+
+router.use(cookieParser());
+
+router.get('/', (req, res) => {
+    if (req.session.token) {
+      res.redirect('/dash');
+    } else {
+      res.redirect('/auth/google');
+    }
+});
+router.get('/auth/google', passport.authenticate('google', {
+    scope: ['https://www.googleapis.com/auth/userinfo.profile']
+}));
+router.get('/auth/google/callback',
+  passport.authenticate('google', {failureRedirect:'/'}),
+  (req, res) => {
+    req.session.token = req.user.token;
+    res.redirect('/dash');
+  }
+);
+
+router.get('/logout', (req, res) => {
+  req.logout();
+  req.session = null;
+  res.redirect('/');
+});
+
+
+
 /* GET home page. */
-router.get('/', function(req, res, next) {
-  res.render('index', { title: 'Express' });
+router.get('/dash', function(req, res, next) {
+  if (req.session.token) {
+    res.render(index);
+  } else {
+    res.redirect('/auth/google');
+  }
 });
 
 module.exports = router;