<?php

/*
 * LMS version 1.11-git
 *
 *  (C) Copyright 2001-2022 LMS Developers
 *
 *  Please, see the doc/AUTHORS for more information about authors!
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License Version 2 as
 *  published by the Free Software Foundation.
 *
 *  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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
 *  USA.
 *
 *  $Id$
 */

if (isset($_GET['id'])) {
    $ids = array(intval($_GET['id']));
} elseif (isset($_POST['customerassignments'])) {
    $ids = Utils::filterIntegers($_POST['customerassignments']);
}

if (isset($_GET['cid'])) {
    $cid = intval($_GET['cid']);
}

if (isset($ids) || isset($cid)) {
    if (isset($ids)) {
        if (!empty($ids)) {
            $customer = $DB->GetOne('SELECT a.customerid
				FROM assignments a
				JOIN customerview c ON (c.id = a.customerid)
				WHERE a.id = ?', array(reset($ids)));
        }
    } else {
        $customer = $DB->GetOne('SELECT id FROM customerview
			WHERE id = ?', array($cid));
        $ids = $DB->GetCol('SELECT id FROM assignments
			WHERE customerid = ?', array($cid));
    }

    if (!$customer) {
        $SESSION->redirect_to_history_entry();
    }

    if (!empty($ids)) {
        $DB->BeginTrans();
        foreach ($ids as $id) {
            $LMS->DeleteAssignment($id);
        }
        $DB->CommitTrans();
    }

    $backto = $SESSION->get_history_entry();
    // infinite loop prevention
    if (preg_match('/customerassignmentedit/', $backto)) {
        $backto = 'm=customerinfo&id=' . $customer;
    }
    $SESSION->redirect('?' . $backto);
}
