Hello World - Passport with LocalStrategy

index.js

const express = require('express');
const passport = require('passport');
const app = express();
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const session = require('express-session');
const LocalStrategy = require('passport-local').Strategy;

passport.serializeUser((user, done) => { console.log('serialize'); done(null, user); } );
passport.deserializeUser((user, done) => { console.log('deserialize'); done(null, user); });

passport.use(new LocalStrategy(
  (username, password, done) => {
    if (password === 'secret') {
      done(null, { username, password });
    } else {
      done(null, false, { message: 'Incorrect username.' });
    }
  }
));

function ensureAuthenticated(req, res, next) {
  if (req.isAuthenticated()) {
    return next();
  }
  res.redirect('/');
}

app.use(cookieParser());
app.use(bodyParser.urlencoded({ extended: true })); 
app.use(session({ secret: 'anything' }));
app.use(passport.initialize());
app.use(passport.session());

app.post('/login',
  passport.authenticate('local', { successRedirect: '/protected', failureRedirect: '/' })
);

app.get('/logout', (req, res) => {
  req.logout();
  res.redirect('/');
});

app.get('/', (req, res) => {
  res.send(`
  <form action="/login" method="post">
      <div>
          <label>Username:</label>
          <input type="text" name="username"/>
      </div>
      <div>
          <label>Password:</label>
          <input type="password" name="password"/>
      </div>
      <div>
          <input type="submit" value="Log In"/>
      </div>
  </form>
  `);
});

app.get('/protected', ensureAuthenticated, (req, res) => { console.log(req.user); res.json(req.user) });

app.listen(3000, () => console.log('Example app listening on port 3000!'));

package.json

{
  "name": "passport-test",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.18.2",
    "cookie-parser": "^1.4.3",
    "express": "^4.16.2",
    "express-session": "^1.15.6",
    "passport": "^0.4.0",
    "passport-local": "^1.0.0"
  }
}