script.liquid

{% comment %}
  -- get all of the products in the shop (up to 25K), and their feature images if they exist
{% endcomment %}

{% assign cursor = nil %}
{% assign products_output = array %}

{% for n in (1..100) %}
  {% capture query %}
    query {
      products(
        first: 250
        after: {{ cursor | json }}
        sortKey: TITLE
      ) {
        pageInfo {
          hasNextPage
          endCursor
        }
        nodes {
          id
          title
          featuredImage {
            url(
              transform: {
                maxWidth: 300
                maxHeight: 300
                crop: CENTER
              }
            )
          }
        }
      }
    }
  {% endcapture %}

  {% assign result = query | shopify %}

  {% if event.preview %}
    {% capture result_json %}
      {
        "data": {
          "products": {
            "nodes": [
              {
                "id": "gid://shopify/Product/1234567890",
                "title": "Widget",
                "featuredImage": {
                  "url": "https://cdn.shopify.com/s/files/1/1234/5678/1234/products/widget_300x300_crop_center.jpg?v=1234567890"
                }
              }
            ]
          }
        }
      }
    {% endcapture %}

    {% assign result = result_json | parse_json %}
  {% endif %}

  {% comment %}
    -- save the output for this product in an array
  {% endcomment %}

  {% for product in result.data.products.nodes %}
    {% capture product_html %}
      <li>
        <b>{{ product.title }}</b>
        <br>
        {% if product.featuredImage %}
          <img src="{{ product.featuredImage.url }}"/>
        {% else %}
          (no image)
        {% endif %}
      </li>
    {% endcapture %}

    {% assign products_output = products_output | push: product_html %}
  {% endfor %}

  {% if result.data.products.pageInfo.hasNextPage %}
    {% assign cursor = result.data.products.pageInfo.endCursor %}
  {% else %}
    {% break %}
  {% endif %}
{% endfor %}

{% comment %}
  -- capture the HTML used by the PDF generator
{% endcomment %}

{% capture html %}
  <h1>Product catalog</h1>
  <ul>
  {{ products_output | join: newline }}
  </ul>
{% endcapture %}

{% comment %}
  -- generate the PDF catalog, which will appear as a file download in the task run log
{% endcomment %}

{% action "files" %}
  {
    "catalog.pdf": {
      "pdf": {
        "html": {{ html | json }}
      }
    }
  }
{% endaction %}