如何从firebase函数获取对firebase静态index.html的响应

const functions = require('firebase-functions');
const admin = require('firebase-admin');
const { Storage } = require('@google-cloud/storage');
const path = require('path');
const fs = require('fs');

admin.initializeApp();

// 创建云函数
exports.getIndexHtml = functions.https.onRequest((request, response) => {
  // 获取Firebase存储桶引用
  const storage = new Storage();
  const bucket = storage.bucket('your-firebase-storage-bucket');

  // 获取index.html文件引用
  const file = bucket.file('index.html');

  // 下载index.html文件
  const filePath = path.join('/tmp', 'index.html');
  file.download({ destination: filePath }).then(() => {
    // 读取下载的文件内容
    const fileContent = fs.readFileSync(filePath, 'utf8');

    // 发送index.html内容作为响应
    response.send(fileContent);
  }).catch((error) => {
    console.error('Error downloading index.html:', error);
    response.status(500).send('Error');
  });
});