<?php

namespace Gedmo\Tree\Strategy\ODM\MongoDB;

use Gedmo\Tree\Strategy\AbstractMaterializedPath;

/**
 * This strategy makes tree using materialized path strategy
 *
 * @author Gustavo Falco <comfortablynumb84@gmail.com>
 * @author Gediminas Morkevicius <gediminas.morkevicius@gmail.com>
 * @package Gedmo.Tree.Strategy.ODM.MongoDB
 * @subpackage MaterializedPath
 * @link http://www.gediminasm.org
 * @license MIT License (http://www.opensource.org/licenses/mit-license.php)
 */
class MaterializedPath extends AbstractMaterializedPath
{
    /**
     * Remove node and its children
     *
     * @param ObjectManager $om
     * @param object $meta - Metadata
     * @param object $config - config
     * @param object $node - node to remove
     * @return void
     */
    public function removeNode($om, $meta, $config, $node)
    {
        $pathProp = $meta->getReflectionProperty($config['path']);
        $pathProp->setAccessible(true);

        // Remove node and its children
        $om->createQueryBuilder()
            ->remove($meta->name)
            ->field($config['path'])->equals(new \MongoRegex('/^'.preg_quote($pathProp->getValue($node)).'.?+/'))
            ->getQuery()
            ->execute();
    }

    /**
     * Returns children of the node with its original path
     *
     * @param ObjectManager $om
     * @param object $meta - Metadata
     * @param object $config - config
     * @param mixed $originalPath - original path of object
     * @return void
     */
    public function getChildren($om, $meta, $config, $originalPath)
    {
        return $om->createQueryBuilder()
            ->find($meta->name)
            ->field($config['path'])->equals(new \MongoRegex('/^'.$originalPath.'.+/'))
            ->sort($config['path'], 'asc')      // This may save some calls to updateNode
            ->getQuery()
            ->execute();
    }
}