<!-- Google Analytics -->

$(document).on('ready', function() {
  // var ga = window.ga
  var pageParser = {
    products: [],
    getProductFromCart: function(tr, index){
      var category = ''
      var brand = $(tr).data('brand');
      var sku = $(tr).data('sku');
      var name = $(tr).find('.cart_prod_link').text()
      var price = $(tr).data('price');
      var quantity = $(tr).find('input.carttbale_input').val()
      var product = {
        id: sku,
        name: name,
        brand: brand,
        category: category,
        position: index + 1,
        price: price,
        quantity: quantity
        // variant: 'black',
      }
      return product
    },
    getProductFromList: function (liItem, index){
      var category = $('.breadcrumbs li:last').find('[itemprop="name"]').html()
      var brand = $(liItem).find('meta[itemprop="brand"]')[0].content;
      var sku = $(liItem).find('[itemprop="sku"]')[0].content;
      var name = $(liItem).find('[itemprop="name"]').text();
      var variant = $(liItem).find('.prodlist_size').text();
      var product = {
        brand: brand,
        category: category,
        id: sku,
        name: name,
        position: index + 1,
        variant: variant,
        list: 'Search Results'
      }
      return product
    },
    getProductsFromCart: function(){
      var products = []
      $('.carttable tbody tr').each(function (index, tdItem) {
        var product = pageParser.getProductFromCart(tdItem, index)
        products.push(product)
      })
      return products
    },
    getProductsFromList: function () {
      var products = pageParser.products
      $('.product_list').children().each(function (index, item) {
        /*if(pageParser.checkVisible(item)){

        }*/
        var product = pageParser.getProductFromList(item, index)
        /*var productFind = products.findIndex((checkedProduct) => checkedProduct.id === product.id  )
        if(productFind > -1){
          product.checked = true;
        } else {
          product.checked = false
        }*/
        product.checked = false
        products.push(product)
      })
      this.products = products
      return products
    },
    getProductFromPage: function () {

      var productPage = $('.two_columns_sticker');
      var id = productPage.find('meta[itemprop="sku"]')[0].content
      var name = $('h1').text();
      var category = $('.breadcrumbs li:last').prev("li").find('[itemprop="name"]').html()
      var brand = productPage.find('meta[itemprop="brand"]')[0].content;
      var variant = ''

      return {
        id: id,
        name: name,
        category: category,
        brand: brand,
        variant: variant,
      }
    },
    getPage: function (){
      if($('.category_page').length > 0 && $('.product_list_butcats').length <= 0){
        return 'category'
      }
      if($('.productpagecontent').length > 0){
        return 'product'
      }
      if($('.carttable').length > 0){
        return 'cart'
      }
      if($('h1').text() === 'Оформление заказа'){
        return 'checkout'
      }
      if(window.dataLayer && window.dataLayer.length > 0 && window.dataLayer[0].transactionId){
        return 'purchase'
      }
      return  false
    },
    checkVisible(elm) {
    var rect = elm.getBoundingClientRect();
    var viewHeight = Math.max(document.documentElement.clientHeight, window.innerHeight);
    return !(rect.bottom < 0 || rect.top - viewHeight >= 0);
    }
  }
  var googleAnalytics = {
    productPage: function () {
      var product = pageParser.getProductFromPage()
      this.beforeSend()
      ga('ec:addProduct', {
        'id': product.id,
        'name': product.name,
        'category': product.category,
        'brand': product.brand,
        'variant': product.variant,
      });
      ga('ec:setAction', 'detail');
      ga('send', 'pageview');
    },
    categoryPage: function () {
      var products = pageParser.getProductsFromList()
      this.beforeSend()
      this.addImpressions(products)
      ga('send','event','Ecommerce','Impressions','',{nonInteraction: true});
    },
    cartPage:function (){
      var products = pageParser.getProductsFromCart()
      this.beforeSend()
      products.map((product, index) => {
        ga("ec:addProduct", {
          "id": product.id,
          "name": product.name,
          "price": product.price,
          "brand": product.brand,
          "category": product.category,
          // "variant": product.variant,
          "position": product.position,
          "quantity": product.quantity
        });
      })

      ga("ec:setAction", "cart", {
        "step": 1
      });
      ga("send", "pageview")

    },
    checkoutPage:function (){
      this.beforeSend()
      ga("ec:setAction", "checkout", {
        "step": 2
      });
      ga("send", "pageview")
    },
    purchasePage: function (){
      var dataLayer = window.dataLayer
      this.beforeSend()
      dataLayer.map((data)=>{
        if(data.transactionProducts){
          data.transactionProducts.map((product) => {
            ga('ec:addProduct', product);
          })
          ga('ec:setAction', 'purchase', {
            'id': data.transactionId,
            'affiliation': data.transactionAffiliation,
            'revenue': data.transactionTotal
          });
        }
      })

      ga('send', 'pageview');     // Send transaction data with initial pageview.
    },

    beforeSend(){
      ga('create', 'UA-44247655-1'); //ID аккаунта в Google Analytics
      ga('require', 'ec');
    },

    addImpressions: function (impressions) {
      impressions.map(function (impression) {
        googleAnalytics.addImpression(impression)
      })
    },
    addImpression: function (impression) {
      if(!impression.checked){
        ga('ec:addImpression', {
          'id': impression.id,                   // Подробная информация о продукте
          'name': impression.name,
          'category': impression.category,
          'brand': impression.brand,
          'variant': impression.variant,
          'list': impression.list,
          'position': impression.position                   // 'position'- позиция продукта в результате поиска (списка).
        });
      }
    },
    onProductClick: function (product) {
      ga('ec:addProduct', {
        'id': product.id,
        'name': product.name,
        'category': product.category,
        'brand': product.brand,
        // 'variant': 'black',
        'position': product.position
      });
      ga('ec:setAction', 'click', {list: 'Search Results'});
      // Клик по продукту и перенаправление пользователя на страницу товара
      ga('send', 'event', 'UX', 'click', 'Results', {
        'hitCallback': function () {
          return true
        }
      });
    },
    cartAction: function (product){
      ga('ec:addProduct', {
        'id': product.id,
        'name': product.name,
        'category': product.category,
        'brand': product.brand,
        // 'variant': product.variant,
        'price': product.price,
        'quantity': product.quantity
      });
    },
    addToCart: function (product) {
      this.cartAction(product)
      ga('ec:setAction', 'add');
      ga('send', 'event', 'UX', 'click', 'add to cart');     // Отправка данных
    },
    removeFromCart: function (product){
      this.cartAction(product)
      ga("ec:setAction", "remove");
      ga("send", "event", "detail view", "click", "removeFromCart");

    },
    run: function (page){
      switch (page){
        case 'category':
          this.categoryPage()
          break;
        case 'product':
          this.productPage()
          break;
        case 'cart':
          this.cartPage()
          break;
        case 'checkout':
          this.checkoutPage()
          break;
        case 'purchase':
          this.purchasePage()
          break;
      }
    }
  }
  var page = pageParser.getPage()
  googleAnalytics.run(page)
  console.log(page)
  /**
   * Add product to cart start
   */
  $('body').on('click','.btn-prodlist-buy',function(){
    var li = $(this).closest('li')
    var product = pageParser.getProductFromList(li, li.index())
    googleAnalytics.onProductClick(product)
  })
  $('body').on('click','.redformsubmit',function(){
    var product = pageParser.getProductFromPage()
    googleAnalytics.addToCart(product)
  })
  /**
   * Add product to cart end
   */
  /**
   * Delete product from cart start
   */
  $('body').on('click','.del_button',function(){
    var tr = $(this).closest('tr')
    var product = pageParser.getProductFromCart(tr, tr.index())
    googleAnalytics.removeFromCart(product)
  })
  /*$(document).scroll(function (){
    var page = pageParser.getPage()
    if(page === 'category'){
      googleAnalytics.run(page)
    }
  });*/
  /**
   * Delete product from cart end
   */
  $(window).on('load', function (){
    debugger
    var page = pageParser.getPage()
    if(page === 'purchase'){
      googleAnalytics.run(page)
    }
  })
});

<!-- End Google Analytics -->