server.js

/**
 * Symbol Art Editor
 * 
 * @author malulleybovo (since 2021)
 * @license GNU General Public License v3.0
 *
 * @licstart  The following is the entire license notice for the
 *  JavaScript code in this page.
 *
 * Copyright (C) 2021  Arthur Malulley B. de O.
 *
 *
 * The JavaScript code in this page is free software: you can
 * redistribute it and/or modify it under the terms of the GNU
 * General Public License (GNU GPL) as published by the Free Software
 * Foundation, either version 3 of the License, or (at your option)
 * any later version.  The code is distributed WITHOUT ANY WARRANTY;
 * without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU GPL for more details.
 *
 * As additional permission under GNU GPL version 3 section 7, you
 * may distribute non-source (e.g., minimized or compacted) forms of
 * that code without the copy of the GNU GPL normally required by
 * section 4, provided you include this license notice and a URL
 * through which recipients can access the Corresponding Source.
 *
 * @licend  The above is the entire license notice
 * for the JavaScript code in this page.
 *
 */

const express = require("express");
const readline = require("readline");
const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

const app = express();
let server = null;
let url = null;

app.get("/", (req, res) => {
    res.sendFile('index.html', { root: __dirname });
});

app.use(express.static(__dirname));

server = app.listen(443, () => {
    let port = server.address().port;
    let ip = Object.values(require('os').networkInterfaces()).reduce((r, list) => r.concat(list.reduce((rr, i) => rr.concat(i.family === 'IPv4' && !i.internal && i.address || []), [])), []);
    console.log(`Application running at: http://localhost:${port}`);
    console.log(`Local network URL: https://${ip}:${port}`);
    let url = `http://localhost:${port}`;
    // requestOpenApplication(url);
    var start = (process.platform == 'darwin' ? 'open' : process.platform == 'win32' ? 'start' : 'xdg-open');
    require('child_process').exec(start + ' ' + url);
});

function requestOpenApplication(url) {
    rl.question(`Would you like to open the application in the default browser? (Y/N)\n`, function (input) {
        if (input === "Y" || input === "y") {
            var start = (process.platform == 'darwin' ? 'open' : process.platform == 'win32' ? 'start' : 'xdg-open');
            require('child_process').exec(start + ' ' + url);
        } else if (input === "N" || input === "n") {
            return
        }
    });
}