// Create a queue, but don't obliterate an existing one!
window.analytics = window.analytics || [];

// A list of the methods in Analytics.js to stub.
window.analytics.methods = ['identify', 'group', 'track',
  'page', 'pageview', 'alias', 'ready', 'on', 'once', 'off',
  'trackLink', 'trackForm', 'trackClick', 'trackSubmit'];

// Define a factory to create stubs. These are placeholders
// for methods in Analytics.js so that you never have to wait
// for it to load to actually record data. The `method` is
// stored as the first argument, so we can replay the data.
window.analytics.factory = function(method){
  return function(){
    var args = Array.prototype.slice.call(arguments);
    args.unshift(method);
    window.analytics.push(args);
    return window.analytics;
  };
};

// For each of our methods, generate a queueing stub.
for (var i = 0; i < window.analytics.methods.length; i++) {
  var key = window.analytics.methods[i];
  window.analytics[key] = window.analytics.factory(key);
}

// Define a method to load Analytics.js from our CDN,
// and that will be sure to only ever load it once.
window.analytics.load = function(key){
  if (document.getElementById('analytics-js')) return;

  // Create an async script element based on your key.
  var script = document.createElement('script');
  script.type = 'text/javascript';
  script.id = 'analytics-js';
  script.async = true;
  script.src = ('https:' === document.location.protocol
    ? 'https://' : 'http://')
    + 'cdn.segment.io/analytics.js/v1/'
    + key + '/analytics.min.js';

  // Insert our script next to the first script element.
  var first = document.getElementsByTagName('script')[0];
  first.parentNode.insertBefore(script, first);
};

// Add a version to keep track of what's in the wild.
window.analytics.SNIPPET_VERSION = '2.0.9';

// Load Analytics.js with your key, which will automatically
// load the tools you've enabled for your account. Boosh!
window.analytics.load('SEGMENTIO_API_KEY');

// accommodate Turbolinks and make the first page call to load the integrations.
$(document).on('ready page:change', function() {
  window.analytics.page();
})