app.js

const express = require('express');
const mongoose = require('mongoose');
const passport = require('passport');
const bodyParser = require('body-parser');

const UserModel = require('./model/model');

mongoose.connect("mongodb://127.0.0.1:27017/passport-jwt", {
    useNewUrlParser: true,
    useUnifiedTopology: true,
});
mongoose.set("useCreateIndex", true);

require('./auth/auth');

const routes = require('./routes/routes');
const secureRoute = require('./routes/secure-routes');

const app = express();

app.use(bodyParser.urlencoded({ extended: false }));

app.use('/', routes);

// Plug in the JWT strategy as a middleware so only verified users can access this route.
app.use('/user', passport.authenticate('jwt', { session: false }), secureRoute);

// Handle errors.
app.use(function (err, req, res, next) {
    res.status(err.status || 500);
    res.json({ error: err });
});

app.listen(3000, () => {
    console.log('Server started.')
});