如何在加入网站的Telegram群组时处理来自Web应用程序的已登录用户ID？

在 Web 应用程序中使用 Telegram Bot API 发送带有用户 ID 的消息：

 const TelegramBot = require('node-telegram-bot-api');
 const token = 'YOUR_TELEGRAM_BOT_TOKEN';
 const bot = new TelegramBot(token, { polling: true });

 // get logged in user ID from your web app
 const userId = req.session.userId;

 // send message to the bot with the user ID
 bot.sendMessage('YOUR_TELEGRAM_GROUP_CHAT_ID', `New user joined from web app with ID: ${userId}`);

将 Telegram 群组聊天 ID 存储在 Web 应用程序中，以便在需要发送消息时使用：

 // store Telegram group chat ID in your web app
 const telegramGroupId = 'YOUR_TELEGRAM_GROUP_CHAT_ID';

在 Web 应用程序中添加加入 Telegram 群组的按钮，并使用 Telegram Login Widget 获取 Telegram 用户 ID：

 <script async src="https://telegram.org/js/telegram-widget.js?4" data-telegram-login="YOUR_TELEGRAM_BOT_USERNAME" data-size="large" data-auth-url="/telegram/login" data-request-access="write"></script>
 <form action="/telegram/join-group" method="post">
   <input type="hidden" name="telegramUserId" id="telegramUserId" value="">
   <button type="submit">Join Telegram group</button>
 </form>

 <script type="text/javascript">
   // set telegramUserId input value when user logs in with Telegram
   Telegram.Auth.getLoginState(function (state) {
       if (state) {
           Telegram.Auth.closeWidget();
           const telegramUserId = state.id;
           document.getElementById('telegramUserId').value = telegramUserId;
       }
   });
 </script>

在 Web 应用程序中处理 POST 请求，将已登录用户 ID 和 Telegram 用户 ID 发送给 Telegram Bot：

 app.post('/telegram/join-group', (req, res) => {
     const loggedUserId = req.session.userId;
     const telegramUserId = req.body.telegramUserId;

     bot.sendMessage(telegramGroupId, `New user joined from