How can I implement advanced user management in Express.js?

How can I implement advanced user management in Express.js?

You can use libraries like Passport.js for authentication and JWT for token management. Would you like a code example?

Yes, please provide a code example for user registration and login.

Sure! Here's a basic example:

const express = require('express');
const passport = require('passport');
const jwt = require('jsonwebtoken');

// User registration route
app.post('/register', async (req, res) => {
    // Logic for registering a user
});

// User login route
app.post('/login', passport.authenticate('local', { session: false }), (req, res) => {
    const token = jwt.sign({ id: req.user.id }, 'your_jwt_secret');
    res.json({ token });
});

Would you like to know more about securing routes?

Yes, how can I secure routes using JWT?

You can create a middleware function to verify the JWT token. Here's an example:

const jwt = require('jsonwebtoken');

function authenticateJWT(req, res, next) {
    const token = req.headers['authorization'];
    if (token) {
        jwt.verify(token, 'your_jwt_secret', (err, user) => {
            if (err) {
                return res.sendStatus(403);
            }
            req.user = user;
            next();
        });
    } else {
        res.sendStatus(401);
    }
}

You can use this middleware in your routes to protect them.