<?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_ProductAlert
 * @copyright   Copyright (c) 2012 Magento Inc. (http://www.magentocommerce.com)
 * @license     http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


/**
 * ProductAlert Stock Customer collection
 *
 * @category    Mage
 * @package     Mage_ProductAlert
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_ProductAlert_Model_Resource_Stock_Customer_Collection
    extends Mage_Customer_Model_Resource_Customer_Collection
{
    /**
     * join productalert stock data to customer collection
     *
     * @param int $productId
     * @param int $websiteId
     * @return Mage_ProductAlert_Model_Resource_Stock_Customer_Collection
     */
    public function join($productId, $websiteId)
    {
        $this->getSelect()->join(
            array('alert' => $this->getTable('productalert/stock')),
            'alert.customer_id=e.entity_id',
            array('alert_stock_id', 'add_date', 'send_date', 'send_count', 'status')
        );

        $this->getSelect()->where('alert.product_id=?', $productId);
        if ($websiteId) {
            $this->getSelect()->where('alert.website_id=?', $websiteId);
        }
        $this->_setIdFieldName('alert_stock_id');
        $this->addAttributeToSelect('*');

        return $this;
    }
}