Customizable way to show products

global $Itemid;
$database = JFactory::getDBO();
$url_itemid = '';
$app = JFactory::getApplication();
$class = hikashop_get('class.cart');
$cart_type = 'cart';
$cart_id =$app->getUserState( HIKASHOP_COMPONENT.'.'.$cart_type.'_id', 0, 'int' );
$class->get($cart_id,true,$cart_type);
		$full = $class->loadFullCart(true,true,true);
		$rows = $full->products;


$cat= array();
$cart_cat = array();
$found=false;
foreach ($this->categories as $category){  
 array_push($cat, $category->category_id); //categories of the current product
}

var_dump($this->categories);
foreach($rows as $row){
    $query = 'SELECT b.category_id FROM '.hikashop_table('product_category').' AS a LEFT JOIN '.hikashop_table('category').' AS b ON a.category_id = b.category_id WHERE a.product_id = '.(int)$row->product_id.' ORDER BY a.product_category_id ASC';
	$database->setQuery($query);
	$categories = $database->loadObjectList();
	$this->assignRef('categories',$categories);//categories of the products that are already in cart
    foreach ($categories as $category){
        if (in_array($category->category_id, $cat)){  //if there is a product in the cart with same category as the current product 
            $found=true;
            break;
        }
    }
    if ($found){
     break;   
    }
}


if ($found){
 echo 'hide add to cart';
    
}
else{
 echo ' show add to cart';   
}