<?php
/*==============================================================================
  Title: phiRedirect
  Category: Snippet
  Author: Phize
  Author URI: http://phize.net
  License: GNU General Public License(http://www.gnu.org/licenses/gpl.html)
  Version: 1.1.0
  Last Update: 2007-07-03T11:41:36+09:00
==============================================================================*/


// Trim parameters
$to = trim($to);
$id = trim($id);
$child = trim($child);
$fragment = trim($fragment);

// Check parameters
$to = ($to == 'document' || $to == 'child' || $to == 'parent') ? $to : $to = 'document';
$id = (strlen($id)) ? $id : $modx->documentIdentifier;
$fragment = (!strlen($fragment) || strpos($fragment, '#') === true) ? $fragment : '#' . $fragment;

// Disable redirecting to same document
if ($to == 'document' && $id == $modx->documentIdentifier) {
  return;
}

$redirect = $modx->makeUrl($modx->config['error_page']);

switch ($to) {
    case 'document':    // To document
        $redirect = $modx->makeUrl($id) . $fragment;

        break;
    case 'parent':    // To parent
        $docObj = $modx->getDocumentObject('id', $id);
        $redirect = $modx->makeUrl($docObj['parent']) . $fragment;

        break;
    case 'child':    // To child
        if (!strlen($child)) {
            $method = 'auto';
        } else if (is_numeric($child) && !$modx->documentListing[$child]) {
            $method = 'id';
        } else {
            $method = 'alias';
        }

        $children = $modx->getActiveChildren($id, 'id', 'ASC', 'id, alias');

        if ($children !== false) {
            foreach ($children as $value) {
                $isChild = ($method == 'auto')
                         || (($method == 'id' && $value['id'] == $child)
                         || ($method == 'alias' && $value['alias'] == $child));

                if ($isChild) {
                    $redirect = $modx->makeUrl($value['id']) . $fragment;
                    break;
                }
            }
        }

        break;
    default:
        break;
}

return $modx->sendRedirect($redirect);
?>