(function() {
  var isDevEnvLoaded = document.getElementsByTagName('html')[0].innerHTML.indexOf('localhost:4055') > 0
  if(window.location.href.indexOf('debugReplayJS') > 0 && !isDevEnvLoaded){
    var devScript = document.createElement('script');
    devScript.setAttribute('src','http://localhost:4055/replay.js');
    document.head.appendChild(devScript);
    throw('loading dev script')
  }

  var cookieEnabled=(navigator.cookieEnabled)? true : false

  if (typeof navigator.cookieEnabled=='undefined' && !cookieEnabled){
    document.cookie='testcookie'
    cookieEnabled=(document.cookie.indexOf('testcookie')!=-1)? true : false
  }

  if (!cookieEnabled) {
   console.info('Cookies not enabled, exiting better replay') ; return
  }

  function isShopifyAdmin(){
    if(document.getElementById('admin-bar-iframe') != null) return true;
    // inside the theme editor
    if(Shopify && Shopify.designMode) return true;

    return false
  }

  function getUrlVars(url) {
    var vars = {};
    var parts = url.replace(/[?&]+([^=&]+)=([^&]*)/gi, function(m,key,value) {
        vars[key] = value;
    });
    return vars;
  }

  var __replayScript = document.querySelector('script[src*="/replay.js"]');
  var __replayApiKey = getUrlVars(__replayScript.src)['replayApiKey']
  var __replaySettings = {
    proof_ignore_admin_visits: getUrlVars(__replayScript.src)['proof_ignore_admin_visits']
  }

  if(__replayApiKey == ''){ console.info('replay API Key is Blank') ; return }

  if(__replaySettings.proof_ignore_admin_visits == 'true' && isShopifyAdmin()){ console.info('replay Ignoring Admin Session') ; return }

  (function(w,d,n,u,o,t,m){w['SrecObject']=o;w[o]=w[o]||function(){
  (w[o].q=w[o].q||[]).push(arguments)},w[o].l=1*new Date();t=d.createElement(n),
  m=d.getElementsByTagName(n)[0];t.async=1;t.src=u;m.parentNode.insertBefore(t,m)
})(window,document,'script','https://replayapp.io/collect/initialize.js','replay');
  replay('init', __replayApiKey);

  function isOnRecentThankYouPage() {
    /* COPIED FROM CART SYNC JS */
    /* it starts as /checkouts/.../thank_you when the order is placed */
    /* any subsequent calls will auto redirect to /orders/ */
    var orders_check = window.location.href.indexOf('/orders/') > 0
    // if(orders_check) return false;

    var checkouts_check = window.location.href.indexOf('/checkouts/') > 0
    var thank_you_check = window.location.href.indexOf('/thank_you') > 0
    if(!checkouts_check && !thank_you_check && !orders_check) return false;

    /* this should be available on the thank you page */
    if(!window.Shopify.checkout || !window.Shopify.checkout.updated_at) return false;

    /* if everything checks out, check the updated_at and if its
    less than 1 min old, we have a match */
    var currTime = Number(new Date)
    var checkoutTime = Number(Date.parse(window.Shopify.checkout.updated_at))
    if(((currTime - checkoutTime) / 60000.0) < 1.0) return true;

    return false
  }

  if(isOnRecentThankYouPage()) replay('tag', 'order placed');

  function __brIsCookieSet(cname) {
    var decodedCookie = decodeURIComponent(document.cookie);
    return (decodedCookie.indexOf(cname) >= 0)
  }

  function __brGetCookie(cname) {
    var name = cname + "=";
    var decodedCookie = decodeURIComponent(document.cookie);
    var ca = decodedCookie.split(';');
    for(var i = 0; i <ca.length; i++) {
      var c = ca[i];
      while (c.charAt(0) == ' ') {
        c = c.substring(1);
      }
      if (c.indexOf(name) == 0) {
        return c.substring(name.length, c.length);
      }
    }
    return "";
  }

  function __brSetCookie(cname, cvalue, exdays) {
    var d = new Date();
    d.setTime(d.getTime() + (exdays * 24 * 60 * 60 * 1000));
    var expires = "expires="+d.toUTCString();
    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
  }

  function __brPushTag(tag) {
    if(__brIsCookieSet('__brTagsSet')) {
      __brSetCookie('__brTagsSet', __brGetCookie('__brTagsSet') + ', ' + tag)
    } else {
      __brSetCookie('__brTagsSet', tag)
    }
    replay('tag', tag)
  }

  // some sites come with a 'cart' cookie already set
  // so can't rely on it always being empty.
  // see: doitcenter(dot)com(dot)pa as an example
  if(!__brIsCookieSet('__brLastSetCartToken')) {
    __brSetCookie('__brLastSetCartToken', __brGetCookie('cart'))
  }

  function __brTokenSet(){
    var currCartToken = __brGetCookie('cart')

    if(currCartToken.length == 0) return;
    if(currCartToken == __brGetCookie('__brLastSetCartToken')) return;

    __brSetCookie('__brLastSetCartToken', currCartToken);
    __brPushTag('add to cart')
  }

  __brTokenSet()
  window.setInterval(__brTokenSet, 1000)



  //===  1: on ajax observer
  // Unable to import AjaxInterceptor because we aren't using node and have no build step
  const intercept = (urlmatch, callback) => {
    let send = XMLHttpRequest.prototype.send;
    XMLHttpRequest.prototype.send = function() {
      /// catch it before the response even comes in, this way 
      /// if the page changes there is a higher chance we hit the server with the new tag
      if(this._url && this._url.includes(urlmatch)){
        callback(this);
      }

      this.addEventListener('readystatechange', function() {
        if (this.responseURL.includes(urlmatch) && this.readyState === 4) {
          callback(this);
        }
      }, false);
      send.apply(this, arguments);
    };
  };

  let output = response => {
    __brPushTag('add to cart')
  };

  intercept('/cart/add.js', output);
  intercept('/cart/update.js', output);
  intercept('/cart/change.js', output);
  intercept('/cart/clear.js', output);


  //===  2: on fetch
  (function(ns, fetch) {
    if (typeof fetch !== 'function') return;
    ns.fetch = function() {
        const response = fetch.apply(this, arguments);
        response.then(res => {
          var observers = ['/cart/add', '/cart/update', '/cart/change', '/cart/clear']

          var found = false
          for (var i = 0; i < observers.length; i++) {
            if(res.url.indexOf(observers[i]) > 0) {
              found = true
            }
          }

          if (found){
            res.clone().json().then(data => __brPushTag('add to cart'));
          }
        });
        return response;
    }
  }(window, window.fetch))

  /* send unique sessions to server */
  /*
  var unique_session_cookie = __brGetCookie('replay_unique_visitor');
  if (unique_session_cookie != 'set') {
    __brSetCookie('replay_unique_visitor', 'set', (1/24 / 2)) // new session every 30 min
    var xhr = new XMLHttpRequest();
    xhr.open("POST", "https://api.better-replay.com/static/site_session", true);
    xhr.setRequestHeader('Content-Type', 'application/json');
    xhr.send(JSON.stringify({
        apiKey: __replayApiKey
    }));
  }
  */
})();