script.liquid

{% assign orders = array %}

{% if event.topic contains "shopify/orders/" %}
  {% if event.preview %}
    {% assign order = hash %}
    {% assign order["admin_graphql_api_id"] = "gid://shopify/order/1234567890" %}
    {% assign order["tags"] = "" %}
  {% endif %}

  {% assign order_node = hash %}
  {% assign order_node["id"] = order.admin_graphql_api_id %}
  {% assign order_node["tags"] = order.tags | split: ", " %}
  {% assign orders[0] = order_node %}
{% elsif event.topic == "mechanic/user/trigger" %}
  {% capture bulk_operation_query %}
    query {
      orders {
        edges {
          node {
            id
            tags
          }
        }
      }
    }
  {% endcapture %}

  {% action "shopify" %}
    mutation {
      bulkOperationRunQuery(
        query: {{ bulk_operation_query | json }}
      ) {
        bulkOperation {
          id
          status
        }
        userErrors {
          field
          message
        }
      }
    }
  {% endaction %}
{% elsif event.topic == "mechanic/shopify/bulk_operation" %}
  {% if event.preview %}
    {% capture objects_jsonl %}
      {"id":"gid://shopify/order/1234567890","tags": []}
    {% endcapture %}

    {% assign bulkOperation = hash %}
    {% assign bulkOperation["objects"] = objects_jsonl | parse_jsonl %}
  {% endif %}

  {% assign orders = bulkOperation.objects %}
{% endif %}

{% for order in orders %}
  {% assign add_tag = false %}
  {% assign remove_tag = false %}

  {% if order.tags contains options.order_tag_to_watch__required %}
    {% if order.tags contains options.order_tag_to_use_when_missing__required %}
      {% assign remove_tag = true %}
    {% endif %}
  {% else %}
    {% unless order.tags contains options.order_tag_to_use_when_missing__required %}
      {% assign add_tag = true %}
    {% endunless %}
  {% endif %}

  {% if add_tag or remove_tag %}
    {% action "shopify" %}
      mutation {
        tags{% if add_tag %}Add{% else %}Remove{% endif %}(
          id: {{ order.id | json }}
          tags: {{ options.order_tag_to_use_when_missing__required | json }}
        ) {
          userErrors {
            field
            message
          }
        }
      }
    {% endaction %}
  {% endif %}
{% endfor %}