<?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_Api2
 * @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)
 */

/**
 * API2 filter ACL attribute resource model
 *
 * @category    Mage
 * @package     Mage_Api2
 * @author      Magento Core Team <core@magentocommerce.com>
 */
class Mage_Api2_Model_Resource_Acl_Filter_Attribute extends Mage_Core_Model_Resource_Db_Abstract
{
    /**
     * Attribute Filter resource ID "all"
     */
    const FILTER_RESOURCE_ALL = 'all';

    /**
     * Initialize resource model
     *
     * @return void
     */
    protected function _construct()
    {
        $this->_init('api2/acl_attribute', 'entity_id');
    }

    /**
     * Get allowed attributes
     *
     * @param string $userType
     * @param string $resourceId
     * @param string $operation One of Mage_Api2_Model_Resource::OPERATION_ATTRIBUTE_... constant
     * @return string|bool|null
     */
    public function getAllowedAttributes($userType, $resourceId, $operation)
    {
        $select = $this->_getReadAdapter()->select()
            ->from($this->getMainTable(), 'allowed_attributes')
            ->where('user_type = ?', $userType)
            ->where('resource_id = ?', $resourceId)
            ->where('operation = ?', $operation);

        return $this->getReadConnection()->fetchOne($select);
    }

    /**
     * Check if ALL attributes allowed
     *
     * @param string $userType
     * @return bool
     */
    public function isAllAttributesAllowed($userType)
    {
        $resourceId = self::FILTER_RESOURCE_ALL;

        $select = $this->getReadConnection()->select()
            ->from($this->getMainTable(), new Zend_Db_Expr('COUNT(*)'))
            ->where('user_type = ?', $userType)
            ->where('resource_id = ?', $resourceId);

        return ($this->getReadConnection()->fetchOne($select) == 1);
    }
}
