<?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_Catalog
 * @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 product price attribute backend model
 *
 * @category   Mage
 * @package    Mage_Catalog
 * @author     Magento Core Team <core@magentocommerce.com>
 */
class Mage_Catalog_Model_Product_Attribute_Backend_Price extends Mage_Eav_Model_Entity_Attribute_Backend_Abstract
{
    /**
     * Set Attribute instance
     * Rewrite for redefine attribute scope
     *
     * @param Mage_Catalog_Model_Resource_Eav_Attribute $attribute
     * @return Mage_Catalog_Model_Product_Attribute_Backend_Price
     */
    public function setAttribute($attribute)
    {
        parent::setAttribute($attribute);
        $this->setScope($attribute);
        return $this;
    }

    /**
     * Redefine Attribute scope
     *
     * @param Mage_Catalog_Model_Resource_Eav_Attribute $attribute
     * @return Mage_Catalog_Model_Product_Attribute_Backend_Price
     */
    public function setScope($attribute)
    {
        if (Mage::helper('catalog')->isPriceGlobal()) {
            $attribute->setIsGlobal(Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_GLOBAL);
        }
        else {
            $attribute->setIsGlobal(Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_WEBSITE);
        }

        return $this;
    }

    /**
     * After Save Attribute manipulation
     *
     * @param Mage_Catalog_Model_Product $object
     * @return Mage_Catalog_Model_Product_Attribute_Backend_Price
     */
    public function afterSave($object)
    {
        $value = $object->getData($this->getAttribute()->getAttributeCode());
        /**
         * Orig value is only for existing objects
         */
        $oridData = $object->getOrigData();
        $origValueExist = $oridData && array_key_exists($this->getAttribute()->getAttributeCode(), $oridData);
        if ($object->getStoreId() != 0 || !$value || $origValueExist) {
            return $this;
        }

        if ($this->getAttribute()->getIsGlobal() == Mage_Catalog_Model_Resource_Eav_Attribute::SCOPE_WEBSITE) {
            $baseCurrency = Mage::app()->getBaseCurrencyCode();

            $storeIds = $object->getStoreIds();
            if (is_array($storeIds)) {
                foreach ($storeIds as $storeId) {
                    $storeCurrency = Mage::app()->getStore($storeId)->getBaseCurrencyCode();
                    if ($storeCurrency == $baseCurrency) {
                        continue;
                    }
                    $rate = Mage::getModel('directory/currency')->load($baseCurrency)->getRate($storeCurrency);
                    if (!$rate) {
                        $rate = 1;
                    }
                    $newValue = $value * $rate;
                    $object->addAttributeUpdate($this->getAttribute()->getAttributeCode(), $newValue, $storeId);
                }
            }
        }

        return $this;
    }
}