<?php
/**
 *
 * This file is part of HESK - PHP Help Desk Software.
 *
 * (c) Copyright Klemen Stirn. All rights reserved.
 * https://www.hesk.com
 *
 * For the full copyright and license agreement information visit
 * https://www.hesk.com/eula.php
 *
 */

define('IN_SCRIPT',1);
define('HESK_PATH','../');

/* Get all the required files and functions */
require(HESK_PATH . 'hesk_settings.inc.php');
require(HESK_PATH . 'inc/common.inc.php');
require(HESK_PATH . 'inc/admin_functions.inc.php');
hesk_load_database_functions();
require(HESK_PATH . 'inc/email_functions.inc.php');

hesk_session_start();
hesk_dbConnect();
hesk_isLoggedIn();

$can_assign_others = hesk_checkPermission('can_assign_others',0);
if ($can_assign_others)
{
	$can_assign_self = TRUE;
}
else
{
	$can_assign_self = hesk_checkPermission('can_assign_self',0);
}

/* A security check */
hesk_token_check();

/* Ticket ID */
$trackingID = hesk_cleanID() or die($hesklang['int_error'].': '.$hesklang['no_trackID']);
$res = hesk_dbQuery("SELECT * FROM `".hesk_dbEscape($hesk_settings['db_pfix'])."tickets` WHERE `trackid`='".hesk_dbEscape($trackingID)."' LIMIT 1");
if (hesk_dbNumRows($res) != 1)
{
	hesk_error($hesklang['ticket_not_found']);
}
$ticket = hesk_dbFetchAssoc($res);

$_SERVER['PHP_SELF'] = 'admin_ticket.php?track='.$trackingID.'&Refresh='.rand(10000,99999);

/* New owner ID */
$owner = intval( hesk_REQUEST('owner') );

/* If ID is -1 the ticket will be unassigned */
if ($owner == -1)
{
	$revision = sprintf($hesklang['thist2'],hesk_date(),'<i>'.$hesklang['unas'].'</i>',addslashes($_SESSION['name']).' ('.$_SESSION['user'].')');
	$res = hesk_dbQuery("UPDATE `".hesk_dbEscape($hesk_settings['db_pfix'])."tickets` SET `owner`=0, `assignedby`=NULL, `history`=CONCAT(`history`,'".hesk_dbEscape($revision)."') WHERE `trackid`='".hesk_dbEscape($trackingID)."'");

    hesk_process_messages($hesklang['tunasi2'],$_SERVER['PHP_SELF'],'SUCCESS');
}
elseif ($owner < 1)
{
    hesk_process_messages($hesklang['nose'],$_SERVER['PHP_SELF'],'NOTICE');
}

/* Verify the new owner and permissions */
$res = hesk_dbQuery("SELECT `id`,`user`,`name`,`email`,`isadmin`,`categories`,`notify_assigned` FROM `".hesk_dbEscape($hesk_settings['db_pfix'])."users` WHERE `id`='{$owner}' LIMIT 1");
$row = hesk_dbFetchAssoc($res);

/* Has new owner access to the category? */
if ( ! $row['isadmin'])
{
	$row['categories']=explode(',',$row['categories']);
	if (!in_array($ticket['category'],$row['categories']))
	{
		hesk_error($hesklang['unoa']);
	}
}

// Make sure two people don't assign a ticket to a different user at the same time
if ($ticket['owner'] && $ticket['owner'] != $owner && hesk_REQUEST('unassigned') && hesk_GET('confirm') != 'Y')
{
	$new_owner = ($owner == $_SESSION['id']) ? $hesklang['scoy'] : sprintf($hesklang['scot'], $row['name']);

	$res = hesk_dbQuery("SELECT `name` FROM `".hesk_dbEscape($hesk_settings['db_pfix'])."users` WHERE `id`='{$ticket['owner']}' LIMIT 1");

	if (hesk_dbNumRows($res) == 1)
	{
		$row = hesk_dbFetchAssoc($res);

		hesk_process_messages(
			sprintf($hesklang['taat'], $row['name']) .
			'<br /><br />' .
			$new_owner .
			'<br /><br />' .
			'<a href="assign_owner.php?track='.$ticket['trackid'].'&amp;owner='.$owner.'&amp;token='.hesk_token_echo(0).'&amp;unassigned=1&amp;confirm=Y">'.$hesklang['ycto'].'</a> | ' .
			'<a href="admin_ticket.php?track='.$ticket['trackid'].'">'.$hesklang['ncto'].'</a>',
			$_SERVER['PHP_SELF'], 'NOTICE'
		);
	}
}

/* Assigning to self? */
if ($can_assign_others || ($owner == $_SESSION['id'] && $can_assign_self))
{
    $assignedby = intval(hesk_SESSION('id'));
    if ($assignedby > 0)
    {
        $assignedby = ',`assignedby`=' . $assignedby;
    }
    else
    {
         $assignedby = '';
    }

	$revision = sprintf($hesklang['thist2'],hesk_date(),addslashes($row['name']).' ('.$row['user'].')',addslashes($_SESSION['name']).' ('.$_SESSION['user'].')');
	$res = hesk_dbQuery("UPDATE `".hesk_dbEscape($hesk_settings['db_pfix'])."tickets` SET `owner`={$owner} {$assignedby}, `history`=CONCAT(`history`,'".hesk_dbEscape($revision)."') WHERE `trackid`='".hesk_dbEscape($trackingID)."'");

    if ($owner != $_SESSION['id'] && !hesk_checkPermission('can_view_ass_others',0))
    {
    	$_SERVER['PHP_SELF']='admin_main.php';
    }
}
else
{
	hesk_error($hesklang['no_permission']);
}

$ticket['owner'] = $owner;
$customers = hesk_get_customers_for_ticket($ticket['id']);
$customer_emails = array_map(function($customer) { return $customer['email']; }, $customers);
$customer_names = array_map(function($customer) { return $customer['name']; }, $customers);

/* --> Prepare message */

// 1. Generate the array with ticket info that can be used in emails
$info = array(
'email'			=> implode(';', $customer_emails),
'category'		=> $ticket['category'],
'priority'		=> $ticket['priority'],
'owner'			=> $ticket['owner'],
'collaborators' => hesk_getTicketsCollaboratorIDs($ticket['id']),
'trackid'		=> $ticket['trackid'],
'status'		=> $ticket['status'],
'name'			=> implode(';', $customer_names),
'subject'		=> $ticket['subject'],
'message'		=> $ticket['message'],
'message_html'  => $ticket['message_html'],
'attachments'	=> $ticket['attachments'],
'dt'			=> hesk_date($ticket['dt'], true),
'lastchange'	=> hesk_date($ticket['lastchange'], true),
'due_date'      => hesk_format_due_date($ticket['due_date']),
'id'			=> $ticket['id'],
'time_worked'   => $ticket['time_worked'],
'last_reply_by' => hesk_getReplierName($ticket),
);

// 2. Add custom fields to the array
foreach ($hesk_settings['custom_fields'] as $k => $v)
{
	$info[$k] = $v['use'] ? $ticket[$k] : '';
}

// 3. Make sure all values are properly formatted for email
$ticket = hesk_ticketToPlain($info, 1, 0);

/* Notify the new owner? */
if ($ticket['owner'] != intval($_SESSION['id']))
{
	hesk_notifyAssignedStaff(false, 'ticket_assigned_to_you', 'notify_assigned', false);
}

$tmp = ($owner == $_SESSION['id']) ? $hesklang['tasy'] : $hesklang['taso'];
hesk_process_messages($tmp,$_SERVER['PHP_SELF'],'SUCCESS');

