the-guard-bot/handlers/commands/routingFn.js

'use strict';

const eq = require('../../utils/eq');
const { isCommand } = require('../../utils/tg');

/** @param { import('telegraf').ContextMessageUpdate } ctx */
module.exports = ({ me, message }) => {
	if (!isCommand(message)) return null;

	const [ , command, username ] =
		/^\/(?:start )?(\w+)(@\w+)?/.exec(message.text);

	if (username && !eq.username(username, me)) return null;

	return { route: command.toLowerCase() };
};