MineXLauncher/server.js

import createError from 'http-errors';
import express, { json, urlencoded, static as serveStatic } from 'express';
import { join } from 'path';
import cookieParser from 'cookie-parser';
import logger from 'morgan';
import debug from 'debug';
import { createServer } from 'http';
import indexRouter from './routes/index.js';
import usersRouter from './routes/users.js';

const __dirname = import.meta.dirname;

const app = express();

app.set('views', join(__dirname, 'views'));
app.set('view engine', 'pug');

app.use(logger('dev'));
app.use(json());
app.use(urlencoded({ extended: false }));
app.use(cookieParser());
app.use(serveStatic(join(__dirname, 'public')));

app.use('/', indexRouter);
app.use('/users', usersRouter);

app.use(function (req, res, next) {
	next(createError(404));
});

app.use(function (err, req, res, next) {
	res.locals.message = err.message;
	res.locals.error = req.app.get('env') === 'development' ? err : {};

	res.status(err.status || 500);
	res.render('error');
});

const debugLogger = debug('minexlauncher:server');

const port = normalizePort(process.env.PORT || '3000');
app.set('port', port);

const server = createServer(app);

server.listen(port);
server.on('error', onError);
server.on('listening', onListening);

function normalizePort(val) {
	const port = parseInt(val, 10);
	if (isNaN(port)) {
		return val;
	} else if (port >= 0) {
		return port;
	} else {
		return false;
	}
}

function onError(error) {
	if (error.syscall !== 'listen') {
		throw error;
	}
	const bind = typeof port === 'string' ? 'Pipe ' + port : 'Port ' + port;
	switch (error.code) {
		case 'EACCES':
			console.error(bind + ' requires elevated privileges');
			process.exit(1);
			break;
		case 'EADDRINUSE':
			console.error(bind + ' is already in use');
			process.exit(1);
			break;
		default:
			throw error;
	}
}

function onListening() {
	const addr = server.address();
	const bind = typeof addr === 'string' ? 'pipe ' + addr : 'port ' + addr.port;
	debugLogger('Listening on ' + bind);
}