<?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) 2009 Irubin Consulting Inc. DBA Varien (http://www.varien.com)
 * @license    http://opensource.org/licenses/osl-3.0.php  Open Software License (OSL 3.0)
 */


/**
 * Catalog Observer
 *
 * @category   Mage
 * @package    Mage_Catalog
 * @author     Magento Core Team <core@magentocommerce.com>
 */
class Mage_Catalog_Model_Observer
{
    /**
     * Process catalog ata related with store data changes
     *
     * @param   Varien_Event_Observer $observer
     * @return  Mage_Catalog_Model_Observer
     */
    public function storeEdit(Varien_Event_Observer $observer)
    {
        $store = $observer->getEvent()->getStore();
        /* @var $store Mage_Core_Model_Store */
        if ($store->dataHasChangedFor('group_id')) {
            Mage::app()->reinitStores();
            Mage::getModel('catalog/url')->refreshRewrites($store->getId());
            Mage::getResourceModel('catalog/category')->refreshProductIndex(
                array(),
                array(),
                array($store->getId())
            );
            if (Mage::helper('catalog/category_flat')->isEnabled(true)) {
                Mage::getResourceModel('catalog/category_flat')->synchronize(null, array($store->getId()));
            }
            Mage::getResourceSingleton('catalog/product')->refreshEnabledIndex($store);
        }
        return $this;
    }

    /**
     * Process catalog data related with new store
     *
     * @param   Varien_Event_Observer $observer
     * @return  Mage_Catalog_Model_Observer
     */
    public function storeAdd(Varien_Event_Observer $observer)
    {
        $store = $observer->getEvent()->getStore();
        /* @var $store Mage_Core_Model_Store */
        Mage::app()->reinitStores();
        Mage::getConfig()->reinit();
        Mage::getModel('catalog/url')->refreshRewrites($store->getId());
        Mage::getResourceSingleton('catalog/category')->refreshProductIndex(
            array(),
            array(),
            array($store->getId())
        );
        if (Mage::helper('catalog/category_flat')->isEnabled(true)) {
            Mage::getResourceModel('catalog/category_flat')
                ->synchronize(null, array($store->getId()));
        }
        Mage::getResourceModel('catalog/product')->refreshEnabledIndex($store);
        return $this;
    }

    /**
     * Process catalog data related with store group root category
     *
     * @param   Varien_Event_Observer $observer
     * @return  Mage_Catalog_Model_Observer
     */
    public function storeGroupSave(Varien_Event_Observer $observer)
    {
        $group = $observer->getEvent()->getGroup();
        /* @var $group Mage_Core_Model_Store_Group */
        if ($group->dataHasChangedFor('root_category_id') || $group->dataHasChangedFor('website_id')) {
            Mage::app()->reinitStores();
            foreach ($group->getStores() as $store) {
                Mage::getModel('catalog/url')->refreshRewrites($store->getId());
                Mage::getResourceSingleton('catalog/category')->refreshProductIndex(
                    array(),
                    array(),
                    array($store->getId())
                );
                if (Mage::helper('catalog/category_flat')->isEnabled(true)) {
                    Mage::getResourceModel('catalog/category_flat')
                        ->synchronize(null, array($store->getId()));
                }
            }
        }
        return $this;
    }

    /**
     * Process catalog data after category move
     *
     * @param   Varien_Event_Observer $observer
     * @return  Mage_Catalog_Model_Observer
     */
    public function categoryMove(Varien_Event_Observer $observer)
    {
        $categoryId = $observer->getEvent()->getCategoryId();
        $prevParentId = $observer->getEvent()->getPrevParentId();
        $parentId = $observer->getEvent()->getParentId();
        Mage::getModel('catalog/url')->refreshCategoryRewrite($categoryId);
        Mage::getResourceSingleton('catalog/category')->refreshProductIndex(array(
            $categoryId, $prevParentId, $parentId
        ));
        Mage::getModel('catalog/category')->load($prevParentId)->save();
        Mage::getModel('catalog/category')->load($parentId)->save();
        if (Mage::helper('catalog/category_flat')->isEnabled(true)) {
            Mage::getResourceModel('catalog/category_flat')
                ->move($categoryId, $prevParentId, $parentId);
        }
        return $this;
    }

    /**
     * Process catalog data after products import
     *
     * @param   Varien_Event_Observer $observer
     * @return  Mage_Catalog_Model_Observer
     */
    public function catalogProductImportAfter(Varien_Event_Observer $observer)
    {
        Mage::getModel('catalog/url')->refreshRewrites();
        Mage::getResourceSingleton('catalog/category')->refreshProductIndex();
        return $this;
    }

    /**
     * Catalog Product Compare Items Clean
     *
     * @param Varien_Event_Observer $observer
     * @return Mage_Catalog_Model_Observer
     */
    public function catalogProductCompareClean(Varien_Event_Observer $observer)
    {
        Mage::getModel('catalog/product_compare_item')->clean();
        return $this;
    }

    /**
     * After save event of category
     *
     * @param Varien_Event_Observer $observer
     * @return Mage_Catalog_Model_Observer
     */
    public function categorySaveAfter(Varien_Event_Observer $observer)
    {
        if (Mage::helper('catalog/category_flat')->isEnabled(true)) {
            $category = $observer->getEvent()->getCategory();
            Mage::getResourceModel('catalog/category_flat')->synchronize($category);
        }
        return $this;
    }
}
