<?php

/*
 * LMS version 1.11-git
 *
 *  (C) Copyright 2001-2020 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.
 *
 *  $Id$
 */

$id = intval($_GET['id']);

if ($id) {
    if (isset($_GET['recover'])) {
        $DB->Execute('UPDATE documents SET cancelled = 0 WHERE id = ?', array($id));

        $invoice = $LMS->GetInvoiceContent($id);

        foreach ($invoice['content'] as $idx => $content) {
            if ($invoice['doctype'] == DOC_CNOTE) {
                $value = $content['total'] - $invoice['invoice']['content'][$idx]['total'];
            } else {
                $value = $content['total'];
            }
            $LMS->AddBalance(array(
                'time' => $invoice['cdate'],
                'value' => $value * -1,
                'taxid' => $content['taxid'],
                'customerid' => $invoice['customerid'],
                'comment' => $content['description'],
                'docid' => $id,
                'itemid' => $content['itemid'],
            ));
        }
    } else {
        if ($LMS->isDocumentPublished($id) && !ConfigHelper::checkConfig('privileges.superuser')) {
            return;
        }

        if ($LMS->isDocumentReferenced($id)) {
            return;
        }

        if ($LMS->isArchiveDocument($id)) {
            return;
        }

        if ($LMS->isKsefDocument($id)) {
            return;
        }

        $hook_data = $LMS->executeHook('invoicecancel_before_cancel', array(
            'id' => $id,
        ));
        if (isset($hook_data['continue']) && empty($hook_data['continue'])) {
            return;
        }

        $DB->Execute('UPDATE documents SET cancelled = 1 WHERE id = ?', array($id));
        $DB->Execute('DELETE FROM cash WHERE docid = ?', array($id));
        $document = $DB->GetRow('SELECT * FROM documents WHERE id = ?', array($id));
    }
    if ($SYSLOG) {
        $args = array(
            SYSLOG::RES_DOC => $document['id'],
            SYSLOG::RES_CUST => $document['customerid'],
            SYSLOG::RES_USER => Auth::GetCurrentUser()
        );
        $SYSLOG->AddMessage(SYSLOG::RES_DOC, SYSLOG::OPER_UPDATE, $args);
    }
}

$SESSION->redirect('?m=invoicelist');
