{% comment %}
Google Ads Dynamic Remarketing Script by Alex Czartoryski
https://business.czarto.com/2017/02/07/shopify-dynamic-remarketing-setup/

This version: Sept 30, 2020
The latest version of this script available here:
https://github.com/Czarto/ShopifyScripts/blob/master/snippets/adwords-remarketing.liquid
{% endcomment %}

{% comment %}Set to false if GTAG is already loaded on the page. Leave to true if unsure.{%endcomment%}
{% assign load_gtag = true %}

{% comment %} Enter your google conversion id below {% endcomment %}
{% assign google_conversion_id = "123456789" %}

{% assign shopify_store_country  = 'US' %}
{% if shop.currency == 'CAD' %}
{% assign shopify_store_country  = 'CA' %}
{% elsif shop.currency == 'AUD' %}
{% assign shopify_store_country  = 'AU' %}
{% endif %}

{%if load_gtag %}
<!-- Global site tag (gtag.js) -->
<script async src="https://www.googletagmanager.com/gtag/js?id=AW-{{ google_conversion_id }}"></script>
{% endif %}
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());
  gtag('config', 'AW-{{ google_conversion_id }}');
</script>

{% assign google_event = false %}
{% assign google_items = false %}
{% assign google_value = false %}
{% if template contains 'cart' %}
	{% assign google_event = 'add_to_cart' %}
	{% capture google_items %}{% for item in cart.items %}{'id':'shopify_{{ shopify_store_country  }}_{{ item.product.id }}_{{ item.variant.id }}','google_business_vertical': 'retail'}{% unless forloop.last %}, {% endunless %}{% endfor %}{% endcapture %}
	{% assign google_value = cart.total_price %}
{% elsif template contains 'collection' %}
	{% assign google_event = 'view_item_list' %}
	{% capture google_items %}{% for item in collection.products limit:5 %}{'id':'shopify_{{ shopify_store_country  }}_{{ item.id }}_{{ item.variants.first.id }}','google_business_vertical': 'retail'}{% unless forloop.last %}, {% endunless %}{% endfor %}{% endcapture %}
{% elsif template contains 'product' %}
	{% assign google_event = 'view_item' %}
	{% capture google_items %}{'id':'shopify_{{ shopify_store_country  }}_{{ product.id }}_{{ product.selected_or_first_available_variant.id }}','google_business_vertical': 'retail'}{% endcapture %}
	{% assign google_value = product.selected_or_first_available_variant.price %}
{% elsif template contains 'search' %}
	{% assign google_event = 'view_search_results' %}
	{% capture google_items %}{% for item in search.results limit:5 %}{'id':'shopify_{{ shopify_store_country  }}_{{ item.id }}_{{ item.variants.first.id }}','google_business_vertical': 'retail'}{% unless forloop.last %}, {% endunless %}{% endfor %}{% endcapture %}
{% endif %}

{% if google_event %}
<script>
	gtag('event', '{{ google_event }}', {
	  'send_to': 'AW-{{ google_conversion_id }}',
	  {% if google_value %}'value': '{{ google_value | divided_by: 100.0 }}',{% endif %}
	  'items': [{{ google_items }}]
	});
</script>
{% endif %}