[Enhancement]: Trigger hook 'woocommerce_order_status_completed' after order status set to 'completed' through WooCommerce API

[webr459g8s490ghw3]

Describe the solution you'd like

Currently, when setting an order's status to 'completed' manually, the hook 'woocommerce_order_status_completed' is triggered, but when done through the WooCommerce API it is not.

Doing this through WooCommerce's API as well will improve compatibility with plugins that rely on this hook, for instance:

A client of ours has a webshop that uses a plug-in that relies on the hook 'woocommerce_order_status_completed' to enqueue a review-invitation email to be send after a week of a customer's order. The order status is set to 'completed' through WooCommerce's API, by an external shipping solution called SendCloud.

I understand that it's easier said than done, because triggering the hook is something done through using the WordPress backend, which would mean that WooCommerce's API would have to fetch a backend URL in order to trigger the hook, which is not efficient.

Perhaps a more efficient solution would be for WooCommerce's API to add order ID's to some database table that will then be used by a cron job to fetch the backend URL and trigger the hook for a batch of order ID's.

For now I will manually enqueue the review-invitation emails, but regardless I think it would be a great improvement to the API.

Describe alternatives you've considered

No response

Additional context

No response

[coreymckrill]

@webr459g8s490ghw3 I was just testing this out, and was able to trigger the woocommerce_order_status_completed action hook when changing an order status to "completed" through the API (the wc/v3/orders endpoint). Can you describe a step-by-step of what you're doing when that hook is not firing?

[webr459g8s490ghw3]

@webr459g8s490ghw3 I was just testing this out, and was able to trigger the woocommerce_order_status_completed action hook when changing an order status to "completed" through the API (the wc/v3/orders endpoint). Can you describe a step-by-step of what you're doing when that hook is not firing?

As I can see now, the Legacy API is enabled. Could this be the reason for the hook not firing? I am not sure why it is enabled, so I would have to discuss this with the team before disabling it.

[coreymckrill]

@webr459g8s490ghw3 just to clarify, you're using a legacy endpoint (i.e. wc-api/v3/orders) rather than the current REST API endpoint? If so, I definitely encourage you to update the current version.

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