server.js

// Dependencies
const express = require('express');
// Setup PORT
const PORT = process.env.PORT || 8080;
// Setup app express
const app = express();

// Serve static content for the app from the "public"
// directory in the application directory.
app.use(express.static('public'));

// Parse application body as JSON
app.use(express.urlencoded({ extended: true }));
app.use(express.json());

// Set Handlebars dependency
const exphbs = require('express-handlebars');

app.engine('handlebars', exphbs({ defaultLayout: 'main' }));
app.set('view engine', 'handlebars');

// Import routes and give the server access to them
const routes = require('./controllers/burgers_controller.js');

app.use(routes);

// Starts the server to begin listening to client requests
app.listen(PORT, () => {
    // Log (server-side) when the server has started
    console.log('Server listening on localhost: ' + PORT);
});