如何使用NodeJS下载最多2 2GB的电报文件

const TelegramBot = require('node-telegram-bot-api');

// 替换为你的Telegram Bot Token
const token = 'YOUR_TELEGRAM_BOT_TOKEN';

// 创建bot实例
const bot = new TelegramBot(token, { polling: true });

// 监听消息
bot.on('message', async (msg) => {
  const chatId = msg.chat.id;
  const messageId = msg.message_id;

  // 下载文件
  try {
    const { file_path } = await bot.getFileLink(messageId);
    const { stream, filename } = await bot.downloadFile(file_path);

    // 创建可写流来保存文件
    const fileStream = require('fs').createWriteStream(`./downloads/${filename}`);

    // 管道传输数据
    stream.pipe(fileStream);

    fileStream.on('finish', () => {
      console.log(`File ${filename} downloaded successfully.`);
    });

    fileStream.on('error', (err) => {
      console.error(`Error downloading file ${filename}: ${err}`);
    });
  } catch (error) {
    console.error(`Error downloading file: ${error}`);
  }
});