smartinmedia/cunity

<?php

/**
 * ########################################################################################
 * ## CUNITY(R) V2.0 - An open source social network / "your private social network"     ##
 * ########################################################################################
 * ##  Copyright (C) 2011 - 2015 Smart In Media GmbH & Co. KG                            ##
 * ## CUNITY(R) is a registered trademark of Dr. Martin R. Weihrauch                     ##
 * ##  http://www.cunity.net                                                             ##
 * ##                                                                                    ##
 * ########################################################################################.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or any later version.
 *
 * 1. YOU MUST NOT CHANGE THE LICENSE FOR THE SOFTWARE OR ANY PARTS HEREOF! IT MUST REMAIN AGPL.
 * 2. YOU MUST NOT REMOVE THIS COPYRIGHT NOTES FROM ANY PARTS OF THIS SOFTWARE!
 * 3. NOTE THAT THIS SOFTWARE CONTAINS THIRD-PARTY-SOLUTIONS THAT MAY EVENTUALLY NOT FALL UNDER (A)GPL!
 * 4. PLEASE READ THE LICENSE OF THE CUNITY SOFTWARE CAREFULLY!
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program (under the folder LICENSE).
 * If not, see <http://www.gnu.org/licenses/>.
 *
 * If your software can interact with users remotely through a computer network,
 * you have to make sure that it provides a way for users to get its source.
 * For example, if your program is a web application, its interface could display
 * a "Source" link that leads users to an archive of the code. There are many ways
 * you could offer source, and different solutions will be better for different programs;
 * see section 13 of the GNU Affero General Public License for the specific requirements.
 *
 * #####################################################################################
 */

namespace Cunity\Friends\Models\Generator;

use Cunity\Core\Cunity;
use Cunity\Core\Models\Db\Adapter\Mysqli;
use Cunity\Core\Request\Session;
use Zend_Db_Expr;

/**
 * Class FriendQuery.
 */
class FriendQuery
{
    /**
     * @param string $status
     *
     * @return Zend_Db_Expr
     *
     * @throws \Exception
     */
    public static function getFriendListQuery($status = '> 0')
    {
        $settings = Cunity::get('settings');

        if ($settings->getSetting('register.allfriends')) {
            return new Zend_Db_Expr(Cunity::get('db')->select()
                ->from(Mysqli::getDbprefix().'users', 'userid')
                ->where('userid!=?', Session::get('user')->userid));
        } else {
            return new Zend_Db_Expr(Cunity::get('db')->select()
                ->from(Mysqli::getDbprefix().'relations', new Zend_Db_Expr('(CASE WHEN sender = '.Session::get('user')->userid.' THEN receiver WHEN receiver = '.Session::get('user')->userid.' THEN sender END)'))
                ->where('status'.$status)
                ->where('sender=? OR receiver=?', Session::get('user')->userid));
        }
    }
}