script.liquid

{% capture newline %}
{% endcapture %}

{% if event.preview %}
  {
    "action": {
      "type": "shopify",
      "options": [
        "update",
        [
          "order",
          12345
        ],
        {
          "note": "(Note copied from customer)"
        }
      ]
    }
  }
{% elsif event.topic == "shopify/orders/create" %}
  {% if order.customer.note == blank %}
    {"log": "No note on file for this customer; skipping order update"}
  {% else %}
    {
      "action": {
        "type": "shopify",
        "options": [
          "update",
          [
            "order",
            {{ order.id | json }}
          ],
          {
            "note": {{ order.note | append: newline | append: newline | append: order.customer.note | strip | json }}
          }
        ]
      }
    }
  {% endif %}
{% elsif event.topic == "mechanic/user/trigger" %}
  {% for order in shop.orders.open %}
    {% assign order_note_downcased = order.note | downcase %}
    {% assign customer_note_downcased = order.customer.note | downcase %}

    {% unless customer_note_downcased == blank or order_note_downcased contains customer_note_downcased %}
      {
        "action": {
          "type": "shopify",
          "options": [
            "update",
            [
              "order",
              {{ order.id | json }}
            ],
            {
              "note": {{ order.note | append: newline | append: newline | append: order.customer.note | strip | json }}
            }
          ]
        }
      }
    {% endunless %}
  {% endfor %}
{% endif %}