fugadalcontrollo/routes/index.js

const express = require('express')
const router = express.Router()

const { fromTor, fromVpn } = require('./utils')

// magic
const render = template => (req, res) => res.render(template)

router.get('/', render('index'))

// level I (tor -> read metadata)
router.get('/subito', fromTor,
  (req, res) => res.render(req.fromTor ? 'torok' : 'tornook') )

// level II (read metadata -> mail)
router.get('/metadata', render('metadata'))

// level IV (mail -> vpn)
router.get('/mail', render('mail'))

// level V (vpn -> read mail)
router.get('/vpn', fromTor, fromVpn, (req, res) => {
  if (!req.isTor && req.isVpn) render('vpnok')
  else render('vpnnook')
})

module.exports = router