plugin

<?php
class plgHikashopSocialdrm extends JPlugin
{

 function plgHikashopSocialdrm(&$subject, $config){
		parent::__construct($subject, $config);
	}


      // Execute code upon order confirmation
      function onAfterOrderUpdate(&$order,&$send_email){
         
            if(!@include_once(rtrim(JPATH_ADMINISTRATOR,DS).DS.'components'.DS.'com_hikashop'.DS.'helpers'.DS.'helper.php')){ return false; }
         
            //Step 1: Get order ID, invoice number, user ID and email address
            $order_id = $order->order_id;
            $Output = 'Order id = ' . $order_id; 
            hikashop_writeToLog($Output);

            $InvNum = $order->order_invoice_number;
            $Output ="Invoice number: " .  $InvNum;
            hikashop_writeToLog($Output);
                
            $UserID = $order->order_user_id;        
            $Output ="User ID: " .  $UserID;
            hikashop_writeToLog($Output);
         
            $userClass = hikashop_get('class.user');
            $user = $userClass->get($order->order_user_id);
            $UserEmail = $user->user_email;
            $Output ="User email: " .  $UserEmail;
            hikashop_writeToLog($Output);

           
           //Step 2: Order confirmed?
           $app = JFactory::getApplication();
           $config =& hikashop_config();
		   $confirmed = $config->get('order_confirmed_status');

           //If order is confirmed show the products.
           if($order->order_status == $confirmed){
                //Load the current cart data:
                $cartClass = hikashop_get('class.cart');
                $cart = $cartClass->getFullCart();
               
               //The products in the cart will be available in the 
               //attribute as an array of product objects:
                foreach($cart->products as $product) {
                    hikashop_writeToLog($product->product_name);
                    //TO BE EXTENDED WITH switch OR if TO CHECK WHETHER PRODUCTS A, B OR C WERE SELECTED.
                }
		   }
	}
}

<?xml version="1.0" encoding="utf-8"?>
<extension version="1.0" type="plugin" method="upgrade" group="hikashop">
    <name>Hikashop Social DRM</name>
    <author>Alain Zuur</author>
    <creationDate>December 2022</creationDate>
    <version>1.0.0</version>
    <description>Social DRM</description>
    <files>
        <filename plugin="socialdrm">socialdrm.php</filename>
    </files>
</extension>

<?php
class plgHikashopSocialdrm extends JPlugin
{

 function plgHikashopSocialdrm(&$subject, $config){
		parent::__construct($subject, $config);
	}

      // Execute code upon order confirmation
      function onAfterOrderUpdate(&$order,&$send_email){
         
            if(!@include_once(rtrim(JPATH_ADMINISTRATOR,DS).DS.'components'.DS.'com_hikashop'.DS.'helpers'.DS.'helper.php')){ return false; }
         
            //Step 1: Get order ID.
            $order_id = $order->order_id;

            //Step 2: Load the whole information of an order via loadFullOrder
            $orderClass = hikashop_get('class.order');
            $FullOrder = $orderClass->loadFullOrder($order_id, true, false);

            //Step 3: Get invoice number, user ID and email address
            //3A: Invoice number
            $InvNum = $FullOrder->order_invoice_number;
                
            //3B: User ID     
            $UserID = $FullOrder->order_user_id;        
            $Output ="User ID: " .  $UserID;
         
            //3C: User email
            $userClass = hikashop_get('class.user');
            $user = $userClass->get($FullOrder->order_user_id);
            $UserEmail = $user->user_email;

            //Step 4: Order confirmed?
            $app = JFactory::getApplication();
            $config =& hikashop_config();
	    $confirmed = $config->get('order_confirmed_status');

            //If order is confirmed, show the products.
            if($FullOrder->order_status == $confirmed){
                
                foreach($FullOrder->products as $product) {
 	                 hikashop_writeToLog($product->order_product_name);
 	                 hikashop_writeToLog($product->order_product_id);
 	                 $ProductID =  $product->order_product_id;
                         // Now do things with $ProductID 
                } 
    }
	}
}