Node.js 如何从电报机器人向MySql添加用户_数据？

代码：

我的数据库： 我想将此信息添加到数据库中，然后我应该将此数据库连接到我的站点。 我需要从电报中得到有关用户的信息

require('dotenv').config();
const TelegramBot = require('node-telegram-bot-api');
const bot = new TelegramBot(process.env.API_TOKEN, {polling: true})
const mysql = require('mysql');

const con = mysql.createConnection({
    host: '127.0.0.1',
    user: 'root',
    password: 'root',
    database: 'elections'
});


bot.onText(/\/start /, msg => {
    const chatId = msg.chat.id;
    const user_id = msg.from.id;
    const first_name = msg.from.first_name;
    const last_name = msg.from.last_name;
    const username = msg.from.user_name;
    user_data = [chatId, first_name, last_name, username];
    con.connect(function (err)  {
        if (err) throw err;
        user_data = [user_id, first_name, last_name, username];
        console.log("Connect succes!");
        console.log(result);
        bot.sendMessage(chatId, "Bot are working!");
        con.query("INSERT INTO users (user_id, first_name, last_name, username) VALUES ?", [user_data], function (err, result){
            if (err) throw err;
            console.log("Result" + result);
        })
    })
})