jwtlogin.js

const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const express = require('express');
const jwt = require('jsonwebtoken');

const app = express();
app.use(cookieParser());
app.use(bodyParser.urlencoded({ extended: true }));

const config = {
  secretKey : 'QIFHAONFOEPN'
}

app.post('/login', (req, res) => {
    console.log(req.body)
    const user = {
        id: 1,
    }
    let token = jwt.sign({ user: user });
    res.send(token);
})
app.post('/logout', (req, res) => {
    res.cookie("auth-token", "");
})

app.get('/api', verifyToken, (req, res) => {
    try {
        jwt.verify(req.token, config.secretKey, (error, authData) => {
            if (error) {
                res.send("not logged in")
            }
            res.json({
                message: "post Created",
                authData
            })
        })
    } catch (error) {
        res.send(error)
    }
})

function verifyToken(req, res, next) {
    try {
        req.token = req.cookies["auth-token"]
        next()
        else {
            res.send("Not logged-in")
        }
    }
    catch {
        res.send("something went wrong")
    }
}

app.listen(3000, () => {
    console.log("server is runing")
})