通过Node.js和Express连接到google analytics API的最佳方法是什么？

npm install googleapis express

const { google } = require('googleapis');

const auth = new google.auth.GoogleAuth({
  keyFile: 'path/to/service-account-key.json',
  scopes: ['https://www.googleapis.com/auth/analytics.readonly'],
});

const analytics = google.analyticsreporting({ version: 'v4', auth });

const { google } = require('googleapis');
const express = require('express');

const app = express();

const oauth2Client = new google.auth.OAuth2(
  'YOUR_CLIENT_ID',
  'YOUR_CLIENT_SECRET',
  'YOUR_REDIRECT_URL'
);

const authUrl = oauth2Client.generateAuthUrl({
  access_type: 'offline',
  scope: ['https://www.googleapis.com/auth/analytics.readonly'],
});

app.get('/auth', (req, res) => {
  res.redirect(authUrl);
});

app.get('/auth/callback', async (req, res) => {
  const { code } = req.query;
  const { tokens } = await oauth2Client.getToken(code);
  oauth2Client.setCredentials(tokens);

  const analytics = google.analyticsreporting({ version: 'v4', auth: oauth2Client });

  // 在这里执行您的Google Analytics API调用

  res.send('授权成功！');
});

app.listen(3000, () => {
  console.log('应用程序正在监听端口3000');
});

const { google } = require('googleapis');

const auth = new google.auth.GoogleAuth({
  keyFile: 'path/to/service-account-key.json',
  scopes: ['https://www.googleapis.com/auth/analytics.readonly'],
});

const analytics = google.analyticsreporting({ version: 'v4', auth });

const request = {
  reportRequests: [
    {
      viewId: 'YOUR_VIEW_ID',
      dateRanges: [
        {
          startDate: '2022-01-01',
          endDate: '2022-01-31',
        },
      ],
      metrics: [
        {
          expression: 'ga:pageviews',
        },
      ],
    },
  ],
};

analytics.reports.batchGet(request, (err, response) => {
  if (err) {
    console.error(err);
    return;
  }

  const { reports } = response.data;
  // 处理报告数据
});