Попробуйте добавить пользовательскую плату по формуле
- ($ order-> subtotal + $ order_shipping_total) / 100 * 1,3 + 13;
в редактировании заказа ADMIN на основе выбранного способа доставки.
Попробуйте использовать крючок woocommerce_ajax_order_items_added
, но без успеха
add_action('woocommerce_ajax_order_items_added', 'update_order', 10, 2);
function update_order($added_items, $order){
foreach ($added_items as $added_item) {
if ('line_item' === $added_item->get_type()) {
$product = $added_item->get_product();
$cat_ids = $product->get_category_ids();
$rate = new WC_Shipping_Rate('flat_rate_shipping', 'Select payment method', '0', 'flat_rate');
$shipping = new WC_Order_Item_Shipping();
$shipping->set_shipping_rate($rate);
$shipping->save();
$order->add_item($shipping);
$fee = new \WC_Order_Item_Fee();
$fee->set_name('Custom Fee');
$order_data = $order->get_data();
$order_shipping_total = $order_data['shipping_total'];
$fee_amount = ($order->subtotal + $order_shipping_total) / 100 * 1.3 + 13;
$fee->set_total($fee_amount);
$fee->save();
$order->add_item($fee);
//}
$order->save();
}
}
}