diff --git a/app.js b/app.js
index f8de6b4..87b21d7 100644
--- a/app.js
+++ b/app.js
@@ -1,13 +1,20 @@
 const path = require('path')
 const express = require('express')
+const mongoose = require('mongoose')
 const dotenv = require('dotenv')
 const morgan = require('morgan')
 const exphbs = require('express-handlebars')
+const passport = require('passport')
+const session = require('express-session')
+const MongoStore = require('connect-mongo')(session)
 const connectDB = require('./config/db')
 
 // Load config
 dotenv.config({ path: './config/config.env' })
 
+// Passport config
+require('./config/passport')(passport)
+
 connectDB()
 
 const app = express()
@@ -27,11 +34,26 @@ app.engine(
 )
 app.set('view engine', '.hbs')
 
+// Sessions
+app.use(
+  session({
+    secret: 'keyboard cat',
+    resave: false,
+    saveUninitialized: false,
+    store: new MongoStore({ mongooseConnection: mongoose.connection }),
+  })
+)
+
+// Passport middleware
+app.use(passport.initialize())
+app.use(passport.session())
+
 // Static folder
 app.use(express.static(path.join(__dirname, 'public')))
 
 // Routes
 app.use('/', require('./routes/index'))
+app.use('/auth', require('./routes/auth'))
 
 const PORT = process.env.PORT || 3000
 
diff --git a/config/passport.js b/config/passport.js
new file mode 100644
index 0000000..3b18c85
--- /dev/null
+++ b/config/passport.js
@@ -0,0 +1,45 @@
+const GoogleStrategy = require('passport-google-oauth20').Strategy
+const mongoose = require('mongoose')
+const User = require('../models/User')
+
+module.exports = function (passport) {
+  passport.use(
+    new GoogleStrategy(
+      {
+        clientID: process.env.GOOGLE_CLIENT_ID,
+        clientSecret: process.env.GOOGLE_CLIENT_SECRET,
+        callbackURL: '/auth/google/callback',
+      },
+      async (accessToken, refreshToken, profile, done) => {
+        const newUser = {
+          googleId: profile.id,
+          displayName: profile.displayName,
+          firstName: profile.name.givenName,
+          lastName: profile.name.familyName,
+          image: profile.photos[0].value,
+        }
+
+        try {
+          let user = await User.findOne({ googleId: profile.id })
+
+          if (user) {
+            done(null, user)
+          } else {
+            user = await User.create(newUser)
+            done(null, user)
+          }
+        } catch (err) {
+          console.error(err)
+        }
+      }
+    )
+  )
+
+  passport.serializeUser((user, done) => {
+    done(null, user.id)
+  })
+
+  passport.deserializeUser((id, done) => {
+    User.findById(id, (err, user) => done(err, user))
+  })
+}
diff --git a/models/User.js b/models/User.js
new file mode 100644
index 0000000..643029a
--- /dev/null
+++ b/models/User.js
@@ -0,0 +1,29 @@
+const mongoose = require('mongoose')
+
+const UserSchema = new mongoose.Schema({
+  googleId: {
+    type: String,
+    required: true,
+  },
+  displayName: {
+    type: String,
+    required: true,
+  },
+  firstName: {
+    type: String,
+    required: true,
+  },
+  lastName: {
+    type: String,
+    required: true,
+  },
+  image: {
+    type: String,
+  },
+  createdAt: {
+    type: Date,
+    default: Date.now,
+  },
+})
+
+module.exports = mongoose.model('User', UserSchema)
diff --git a/routes/auth.js b/routes/auth.js
new file mode 100644
index 0000000..714292f
--- /dev/null
+++ b/routes/auth.js
@@ -0,0 +1,26 @@
+const express = require('express')
+const passport = require('passport')
+const router = express.Router()
+
+// @desc    Auth with Google
+// @route   GET /auth/google
+router.get('/google', passport.authenticate('google', { scope: ['profile'] }))
+
+// @desc    Google auth callback
+// @route   GET /auth/google/callback
+router.get(
+  '/google/callback',
+  passport.authenticate('google', { failureRedirect: '/' }),
+  (req, res) => {
+    res.redirect('/dashboard')
+  }
+)
+
+// @desc    Logout user
+// @route   /auth/logout
+router.get('/logout', (req, res) => {
+  req.logout()
+  res.redirect('/')
+})
+
+module.exports = router