Google Analytics Netlify Function

google-analytics.js

/**
 * Retrieves unique page views from Google Analytics
 * @param {*} pagePath the path to filter from results
 */
async function getUniquePageViews(pagePath) {
  const defaults = {
    'auth': jwt,
    'ids': 'ga:' + process.env.GA_VIEW_ID,
  }
  await jwt.authorize()

  const metricRequestOptions = {
    ...defaults,
    'start-date': startDate,
    'end-date': 'today',
    'metrics': 'ga:uniquePageviews',
    'dimensions': 'ga:pagePath'
  };

  if (pagePath)
    metricRequestOptions.filters = `ga:pagePath==${pagePath}`

  const result = await google.analytics('v3').data.ga.get(metricRequestOptions)

  return result.data.rows;
}