custom product doesn't display in minicart / cart

defined('_JEXEC') or die;

if(!@include_once(rtrim(JPATH_ADMINISTRATOR,DS).DS.'components'.DS.'com_hikashop'.DS.'helpers'.DS.'helper.php')){ return false; }

abstract class modConfiguratorHelper
{
    public static function getItems(&$params)
    {		
	$jInput = JFactory::getApplication()->input;

	$watchPrice = $jInput->get( 'watchprice' );
        $watchId    = $jInput->get( 'watchid' );
        $watchName  = $jInput->get( 'watchname' );
        $watchHash  = $jInput->get( 'watchhash' );
	$hashkey    = $watchId . $watchPrice . '1.21!stbcssblck';
		
	$productClass = hikashop_get('class.product');
	$product = new stdClass();
	$product->product_name = $watchName;
	$product->product_code = $watchId;
	$product->product_msrp = $watchPrice;
	$product->product_published = 1;
	$product->product_quantity = 3;
        $product->product_tax_id = 11;
	$product->product_warehouse_id = 1;
	$product->categories = array(47);
		
	$price = null;
	$price->price_value = $watchPrice;
	$price->price_currency_id = 151; //151:chf 1:euro 2:usd
	$price->price_min_quantity = 1;
        $price->price_with_tax = $watchPrice;
	$product->prices = array($price);
		
	$result = $productClass->fullSave($product);
	$productClass->updatePrices($product, $result);
	$productClass->updateCategories($product, $result);
	  
	  //$categoryClass = hikashop_get('class.category');
	  //$category_product = new stdClass();
	  //$category_product->category_id = 47;
	  //$category_product->product_id = $productClass->product_id;
	  //$category_product->product_id = 2867;
	  //$result1 = $categoryClass->save($category_product);
	  
	  //$db =& JFactory::getDBO();
	  //$db->setQuery('INSERT INTO '.hikashop::table('product_category').' (product_id, category_id) VALUES ('.$productClass->product_id) .','47')';
	  //$current_result = $db->loadResult();
		
	$cartClass = hikashop_get('class.cart');
	$cartClass->update($result,1);
		
	$urlwatch = 'https://xxxxxxxxxx/121time/orders/'. $watchId .".png";
	$imgwatch = '/home/clients/xxxx/web/images/com_hikashop/upload/customwatchhtml/'. $watchId .".png";
		
	$ch = curl_init($urlwatch);
	$fp = fopen($imgwatch, 'wb');
	curl_setopt($ch, CURLOPT_FILE, $fp);
	curl_setopt($ch, CURLOPT_HEADER, 0);
	curl_exec($ch);
	curl_close($ch);
	fclose($fp);
		
	$imageURL 		= 'customwatchhtml/'. $watchId .".png";
	$msg        = '';
	    
	//traitement image
	$image = new stdClass();
	$image->file_ref_id = $result;
	$image->file_type = 'product';
	$image->file_path = $imageURL;
	$fileClass = hikashop_get('class.file');
	$id = $fileClass->save($image);
	$product->images = array($id);
	$productClass->updateFiles($product,$result,'images');
        
        $link = '/cart/checkout';

	$app = JFactory::getApplication();
	$app->redirect($link, $msg);
        
        return "->price:". $watchPrice ."-id:". $watchId ."-name:". $watchName;
    }
}