<?php

/*
 * Forward DHL labels created by the "DHL for WooCommerce" plugin.
 *
 * Normal case: the label is created BEFORE the order is forwarded - then
 * write_order_items() sends label + tracking number along with the order.
 * This listener covers the other case: the label is created (or re-created)
 * AFTER the order has already been forwarded to the PARTNERCENTER.
 */

if (! defined('ABSPATH')) {
    exit;
}

class PARTNERCENTER_API_WooCommerce_DHL_Label_Class
{
    /**
     * PARTNERCENTER_API_WooCommerce_DHL_Label_Class constructor.
     */
    public function __construct()
    {

        // Listen to label creation by "DHL for WooCommerce"
        // (fires once per tracking number, after the label meta was saved)
        add_action('pr_save_dhl_label_tracking', [$this, 'pr_save_dhl_label_tracking'], 20, 2);

    }

    /**
     * Push a freshly created DHL label to PARTNERCENTER.
     *
     * @param  array  $tracking_details  Carrier, tracking number, ship date, tracking URL
     *
     * @since 1.4.0
     */
    public function pr_save_dhl_label_tracking(int $order_id, $tracking_details)
    {

        // Only orders that have already been forwarded to the PARTNERCENTER -
        // otherwise the label is sent along with the order transfer anyway
        if (empty(get_post_meta($order_id, '_partnercenter_api_order_fulfillment_forwarded', true))) {
            return;
        }

        // Load API
        $partnercenter = apply_filters('PARTNERCENTER_API', false);
        if ($partnercenter === false) {
            return;
        }

        // Push label + tracking number to PARTNERCENTER
        // (endpoint is idempotent - repeated calls just overwrite)
        $partnercenter->send_order_label($order_id);

    }
}

new PARTNERCENTER_API_WooCommerce_DHL_Label_Class;