Protect express.js endpoint with passport - node.js

Question

I would like to protect some endpoints in my express app, I want to create something simple to manage if my app became a big app...now I'm doing something like this:
setProtected(router) {
const self = this;
router.use(this.auth);
...
}
setPublic(router) {
const self = this;
...
}
getRouter() {
const router = express.Router();
this.setPublic(router);
this.setProtected(router);
return router;
}
with:
auth(req, res, next) {
if(req.isAuthenticated()) {
console.log('req.isAuthenticated()', req.isAuthenticated());
return next();
}
return res.send(401);
}
the problem in this case is that is difficult maintain and it doesn't work well as if I have /:id in my publicRoute and for example /my-items in my protected route when I'm not logged and I try to reach /my-items I get the code of /:id.
Another idea was to create a json with the list of all my urls with same information like protected/not protected and eventual roles and then change auth with something like:
import urls from './urls';
auth(req, res, next) {
if (urls[req.url] == 'public') {
return next()
}
else if (urls[req.url] == 'protected' && req.isAuthenticated()) {
return next();
}
return res.send(401);
}
whats the best way for you?

Answer 1

You can chain middlewares:
eg.
const authenticate = (req, res, next) {
.. some auth logic
next();
}
app.use('/', main...
app.use('/profile', authenticate, otherMiddleware,
app.use('/admin', authenticate, isAdmin, otherMiddleware...

Answer 2

in your main file (server.js) import the routes and use the middleware there :)
server.js
const express = require('express')
const cors = require('cors')
const app = express()
// import admin routes
const adminRoute = require('./app/routes/admin.route.js')
// Add middleware for parsing URL encoded bodies (which are usually sent by browser)
app.use(cors())
// Add middleware for parsing JSON and urlencoded data and populating `req.body`
app.use(express.urlencoded({ extended: false }))
app.use(express.json())
// homepage route
app.get("/", (req, res) => {
res.json({ message: "Hello World" })
})
// restricted by middleware "isAdmin"
app.use('/api/v1', isAdmin, adminRoute)
app.listen(8008).on('listening', () => {
console.log('Server is running on 8008')
})
admin.route.js
const express = require('express')
const admin = require('../controllers/admin.controller.js')
const router = express.Router()
// get all admin users
router.get('/users', (req, res, next) => {
admin.getAdminUsers(req, res, next)
})
module.exports = router