Sindbad~EG File Manager

<?php
/*
 * Gallery - a web based photo album viewer and editor
 * Copyright (C) 2000-2007 Bharat Mediratta
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
 */

/**
 * Helper functions for users/groups
 * @package GalleryCore
 * @subpackage Helpers
 * @author Bharat Mediratta <bharat@menalto.com>
 * @version $Revision: 15513 $
 * @static
 */
class GalleryUserGroupHelper_medium {

    /**
     * @see GalleryCoreApi::addUserToGroup
     */
    function addUserToGroup($userId, $groupId) {
	global $gallery;
	if (empty($userId) || empty($groupId)) {
	    return GalleryCoreApi::error(ERROR_BAD_PARAMETER);
	}

	$userId = (int) $userId;
	$groupId = (int) $groupId;

	/* Is the user already in the group? */
	list ($ret, $inGroup) = GalleryCoreApi::isUserInGroup($userId, $groupId);
	if ($ret) {
	    return $ret;
	}
	if ($inGroup) {
	    return null;
	}

	/* Add a new entry in our groups table to represent this relationship. */
	$ret = GalleryCoreApi::addMapEntry(
	    'GalleryUserGroupMap', array('userId' => $userId, 'groupId' => $groupId));
	if ($ret) {
	    return $ret;
	}
	GalleryDataCache::remove("GalleryUserGroupHelper::isUserInGroup($userId,$groupId)");

	$event = GalleryCoreApi::newEvent('Gallery::ViewableTreeChange');
	$event->setData(array('userId' => $userId, 'itemId' => null));
	list ($ret) = GalleryCoreApi::postEvent($event);
	if ($ret) {
	    return $ret;
	}

	return null;
    }

    /**
     * @see GalleryCoreApi::removeUserFromGroup
     */
    function removeUserFromGroup($userId, $groupId) {
	global $gallery;
	if (empty($userId) || empty($groupId)) {
	    return GalleryCoreApi::error(ERROR_BAD_PARAMETER);
	}

	$userId = (int) $userId;
	$groupId = (int) $groupId;

	/* Remove this relationship from our groups table. */
	$ret = GalleryCoreApi::removeMapEntry(
	    'GalleryUserGroupMap', array('userId' => $userId, 'groupId' => $groupId));
	if ($ret) {
	    return $ret;
	}
	GalleryDataCache::remove("GalleryUserGroupHelper::isUserInGroup($userId,$groupId)");

	$event = GalleryCoreApi::newEvent('Gallery::ViewableTreeChange');
	$event->setData(array('userId' => $userId, 'itemId' => null));
	list ($ret) = GalleryCoreApi::postEvent($event);
	if ($ret) {
	    return $ret;
	}

	return null;
    }

    /**
     * @see GalleryCoreApi::removeUserFromAllGroups
     */
    function removeUserFromAllGroups($userId) {
	global $gallery;
	if (empty($userId)) {
	    return GalleryCoreApi::error(ERROR_BAD_PARAMETER);
	}

	$userId = (int) $userId;

	/* Remove this relationship from our groups table. */
	$ret = GalleryCoreApi::removeMapEntry('GalleryUserGroupMap', array('userId' => $userId));
	if ($ret) {
	    return $ret;
	}

	$event = GalleryCoreApi::newEvent('Gallery::ViewableTreeChange');
	$event->setData(array('userId' => $userId, 'itemId' => null));
	list ($ret) = GalleryCoreApi::postEvent($event);
	if ($ret) {
	    return $ret;
	}

	return null;
    }

    /**
     * @see GalleryCoreApi::removeAllUsersFromGroup
     */
    function removeAllUsersFromGroup($groupId) {
	global $gallery;
	if (empty($groupId)) {
	    return GalleryCoreApi::error(ERROR_BAD_PARAMETER);
	}

	$groupId = (int) $groupId;

	/* Remove this relationship from our groups table. */
	$ret = GalleryCoreApi::removeMapEntry('GalleryUserGroupMap', array('groupId' => $groupId));
	if ($ret) {
	    return $ret;
	}

	list ($ret, $group) = GalleryCoreApi::loadEntitiesById($groupId);
	if ($ret) {
	    return $ret;
	}
	if ($group->getGroupType() != GROUP_ALL_USERS
		&& $group->getGroupType() != GROUP_EVERYBODY) {
	    list ($ret, $userData) = GalleryCoreApi::fetchUsersForGroup($groupId);
	    if ($ret) {
		return $ret;
	    }
	    $event = GalleryCoreApi::newEvent('Gallery::ViewableTreeChange');
	    $event->setData(array('userId' => array_keys($userData), 'itemId' => null));
	    list ($ret) = GalleryCoreApi::postEvent($event);
	    if ($ret) {
		return $ret;
	    }
	}

	return null;
    }

    /**
     * @see GalleryCoreApi::fetchUsersForGroup
     */
    function fetchUsersForGroup($groupId, $count=null, $offset=null, $substring=null) {
	global $gallery;

	$data = array();
	$query = '
	SELECT
	  [GalleryUserGroupMap::userId],
	  [GalleryUser::userName]
	FROM
	  [GalleryUserGroupMap], [GalleryUser]
	WHERE
	  [GalleryUserGroupMap::groupId] = ?
	  AND
	  [GalleryUserGroupMap::userId] = [GalleryUser::id]
	';
	$data[] = (int) $groupId;
	if (!empty($substring)) {
	    $query .= '
	      AND
	      [GalleryUser::userName] LIKE ?
	    ';
	    $data[] = "%$substring%";
	}
	$query .= '
	ORDER BY
	  [GalleryUser::userName]
	';

	list ($ret, $searchResults) = $gallery->search(
	    $query, $data, array('limit' => array('count' => $count, 'offset' => $offset)));
	if ($ret) {
	    return array($ret, null);
	}

	$data = array();
	while ($result = $searchResults->nextResult()) {
	    $data[$result[0]] = $result[1];
	}
	return array(null, $data);
    }
}
?>