main.js

const express = require('express');
const mustache = require('mustache-express');
const cookieParser = require('cookie-parser');
const bodyParser = require('body-parser');
const htmlspecialchars = require('htmlspecialchars');

const SERVER_PORT = 3000;

var game = require('./game.js');
game.createGame();

var app = express();
app.engine('html', mustache());
app.set('view engine', 'html');
app.set('views', './public_html');

app.use(cookieParser());
app.use(bodyParser());

app.get('/', (req, res) => {
	res.redirect('/connect');
});

app.get('/connect', (req, res) => {
	let data = {error: ""};

	if (req.query.error == 1)
		data.error = '<label class="alert alert-danger mt-5">Eh oh! Your username is required!</label>';
	else if (req.query.error == 2)
		data.error = '<label class="alert alert-danger mt-5">Oops! Can\'t add you to the party.</label>';
	else if (req.query.error == 3)
		data.error = '<label class="alert alert-warning mt-5">Wait a minute! You must be connected first.</label>';
	else if (req.query.error == 4)
		data.error = '<label class="alert alert-danger mt-5">Your username is too long! 20 characters MAX</label>';

	res.render('index', data);
});

app.get('/play', (req, res) => {
	let data = {
		'username': req.cookies.username
	};

	res.render('game', data);
});

app.get('/start', (req, res) => {
	game.startRound();

	res.end();
});

app.get('/update', (req, res) => {
	try {
		let username = req.cookies.username;

		res.json(game.getGameInfo(username));
	} catch (err) {
		console.error(err);
		res.writeHead(400);
		res.send();
	}
});

app.get('/check', (req, res) => {
	let username = htmlspecialchars(req.body.username);

	game.bet(game.getPlayer(username), 0);

	res.end();
});

app.get('/raise/:amount', (req, res) => {
	let username = htmlspecialchars(req.body.username);

	game.bet(game.getPlayer(username), req.params.amount);

	res.end();
});

app.get('/fold', (req, res) => {
	let username = htmlspecialchars(req.body.username);
	game.fold(username);

	res.end();
});

app.get('/quit', (req, res) => {
	let username = htmlspecialchars(req.body.username);

	game.quitGame(username);
	res.end();
});

app.post('/connect', (req, res) => {
	let username = htmlspecialchars(req.body.username);

	if (!username) {
		res.redirect('/connect?error=1');
	} else if (username.length > 20) {
		res.redirect('/connect?error=4');
	} else if (!game.addPlayer(username)) {
		res.redirect('/connect?error=2');
	} else {
		res.cookie("username", username);
		res.redirect('/play');
	}
});

app.use(express.static('./public_html'));

app.use((req, res) => {
	res.writeHead(404);
	res.end('404 ERROR - Not Found');
});


app.listen(SERVER_PORT);