/* Source: http://qiita.com/takoratta/items/9b8d33970d07125e4f96 */
function pageSpeed(url) {
  url = url || 'http://ctrlq.org/';

  var APIkey = 'XYZ'; // Get the API key from Google Dev Console
  var strategy = 'desktop'; // 'desktop' or 'mobile'

  var api =
    'https://www.googleapis.com/pagespeedonline/v1/runPagespeed?url=' +
    url +
    '&key=' +
    APIkey +
    '&strategy=' +
    strategy;

  var response = UrlFetchApp.fetch(api, { muteHttpExceptions: true });

  var parsedResult = JSON.parse(response.getContentText());
  var pageSpeedResults = {};

  pageSpeedResults['score'] = parsedResult.score;

  var pageStats = [
    'numberResources',
    'numberHosts',
    'totalRequestBytes',
    'numberStaticResources',
    'htmlResponseBytes',
    'cssResponseBytes',
    'imageResponseBytes',
    'javascriptResponseBytes',
    'otherResponseBytes',
    'flashResponseBytes',
    'textResponseBytes',
    'numberJsResources',
    'numberCssResources',
  ];

  for (var i = 0; i < pageStats.length; i++) {
    pageSpeedResults[pageStats[i]] = parsedResult.pageStats[pageStats[i]];
  }

  return pageSpeedResults;
}