script.liquid

{% if event.topic contains "shopify/fulfillments/" %}
  {% if event.preview %}
    {% assign fulfillment = hash %}
    {% assign fulfillment["tracking_numbers"] = "ABC123" | split: ", " %}
    {% assign fulfillment["order"] = hash %}
    {% assign fulfillment["order"]["admin_graphql_api_id"] = "gid://shopify/Order/1234567890" %}
    {% assign fulfillment["order"]["tags"] = "" %}
  {% endif %}

  {% assign order_tags = fulfillment.order.tags | split: ", " %}
  {% assign tags_to_add = array %}

  {% for tracking_number in fulfillment.tracking_numbers %}
    {% if tracking_number != blank %}
      {% unless order_tags contains tracking_number %}
        {% assign tags_to_add[tags_to_add.size] = tracking_number %}
      {% endunless %}
    {% endif %}
  {% endfor %}

  {% if tags_to_add != empty %}
    {% action "shopify" %}
      mutation {
        tagsAdd(
          id: {{ fulfillment.order.admin_graphql_api_id | json }}
          tags: {{ tags_to_add | json }}
        ) {
          userErrors {
            field
            message
          }
        }
      }
    {% endaction %}
  {% endif %}
{% elsif event.topic == "mechanic/user/trigger" %}
  {% capture bulk_operation_query %}
    query {
      orders {
        edges {
          node {
            id
            tags
            fulfillments {
              trackingInfo {
                number
              }
            }
          }
        }
      }
    }
  {% 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_json %}
      [
        {
          "id": "gid://shopify/Order/1234567890",
          "tags": [],
          "fulfillments": [
            {
              "trackingInfo": [
                {
                  "number": "ABC123"
                }
              ]
            }
          ]
        }
      ]
    {% endcapture %}

    {% assign bulkOperation = hash %}
    {% assign bulkOperation["objects"] = objects_json | parse_json %}
  {% endif %}

  {% for order in bulkOperation.objects %}
    {% assign tags_to_add = array %}

    {% for fulfillment in order.fulfillments %}
      {% for trackingInfoObject in fulfillment.trackingInfo %}
        {% if trackingInfoObject.number != blank %}
          {% unless order.tags contains trackingInfoObject.number %}
            {% assign tags_to_add[tags_to_add.size] = trackingInfoObject.number %}
          {% endunless %}
        {% endif %}
      {% endfor %}
    {% endfor %}

    {% if tags_to_add != empty %}
      {% action "shopify" %}
        mutation {
          tagsAdd(
            id: {{ order.id | json }}
            tags: {{ tags_to_add | json }}
          ) {
            userErrors {
              field
              message
            }
          }
        }
      {% endaction %}
    {% endif %}
  {% endfor %}
{% endif %}