<?php
/**
 * Magento
 *
 * NOTICE OF LICENSE
 *
 * This source file is subject to the Open Software License (OSL 3.0)
 * that is bundled with this package in the file LICENSE.txt.
 * It is also available through the world-wide-web at this URL:
 * http://opensource.org/licenses/osl-3.0.php
 * If you did not receive a copy of the license and are unable to
 * obtain it through the world-wide-web, please send an email
 * to license@magentocommerce.com so we can send you a copy immediately.
 *
 * DISCLAIMER
 *
 * Do not edit or add to this file if you wish to upgrade Magento to newer
 * versions in the future. If you wish to customize Magento for your
 * needs please refer to http://www.magentocommerce.com for more information.
 *
 * @category    Mage
 * @package     Mage_Reports
 * @copyright   Copyright (c) 2010 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


/**
 * Catalog Compared Product Index Model
 *
 * @category   Mage
 * @package    Mage_Reports
 * @author     Magento Core Team <core@magentocommerce.com>
 */
class Mage_Reports_Model_Product_Index_Compared extends Mage_Reports_Model_Product_Index_Abstract
{
    /**
     * Cache key name for Count of product index
     *
     * @var string
     */
    protected $_countCacheKey   = 'product_index_compared_count';

    /**
     * Initialize resource model
     *
     */
    protected function _construct()
    {
        $this->_init('reports/product_index_compared');
    }

    /**
     * Retrieve Exclude Product Ids List for Collection
     *
     * @return array
     */
    public function getExcludeProductIds()
    {
        $productIds = array();

        /* @var $helper Mage_Catalog_Helper_Product_Compare */
        $helper = Mage::helper('catalog/product_compare');

        if ($helper->hasItems()) {
            foreach ($helper->getItemCollection() as $_item) {
                $productIds[] = $_item->getEntityId();
            }
        }

        if (Mage::registry('current_product')) {
            $productIds[] = Mage::registry('current_product')->getId();
        }

        return array_unique($productIds);
    }
}
