OWOP Chatbot Base v0.2.2

// This script may give errors if your browser is old, if you need a good & updated browser use Firefox!
// Changelog:
// Changed in v0.2.2: No longer requires TM
// Changed in v0.2.1: Added support for /tell'ed commands, added isTelled arg
// ==UserScript==
// @name         OWOP Chatbot Base
// @version      0.2.2
// @description  A base for making an OWOP chatbot
// @author       SuperOP535
// @match        *.ourworldofpixels.com/*
// @match        *.wire.ddns.net:9001/*
// @grant        none
// ==/UserScript==

(function() {
    var bot = {
        enabled: false, // change to true for auto-enable
        prefix: '!'
    };
    const commands = {
        // command name may not have spaces
        // id will be the rank if there is no id, nick will be empty if /tell was used
        help: (args, msg, nick, id, isTelled) => {
            OWOP.chat.send('Commands: ' + Object.keys(commands).sort().join(', '));
        },
        'some-command': (args, msg, nick, id, isTelled) => {
            OWOP.chat.send('Hello, person with ' + (isNaN(+id) ? 'rank' : 'id') + ' ' + id + (nick ? ' and nick ' + nick : ''));
        }
    };
    function addBtn() {
        if(!bot.enabled) {
            const btn = document.createElement('button');
            btn.innerHTML = 'Enable bot';
            btn.onclick = function(){btn.style.display='none';bot.enabled=true;};
            document.getElementById('chat').appendChild(btn);
        }
        OWOP.chat.recvModifier = (data) => {
            if(typeof data != 'string' || !bot.enabled) return data;
            const parsed = data.match(/(-> )?\[?\(?(\d+|.)\)?\]? ?>? ?(.*): \u200B?(.*)/);
            if(!parsed) return;
            const [tell, id, nick, msg] = parsed.slice(1);
            const isTelled = tell == '-> ';
            var args = msg.split(' ');
            if(args[0].slice(0,1) != bot.prefix) return data;
            const cmd = args.shift().slice(1);
            if(commands.hasOwnProperty(cmd)) commands[cmd](args, msg, isTelled ? '' : nick, id, isTelled);
            return data;
        };
    }
    window.addEventListener('load', addBtn);
    if(typeof OWOP != 'undefined') addBtn();
})();