<?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.
 *
 *  $Id$
 */

// ajax request handling
if (isset($_GET['action']) && $_GET['action'] == 'eventmove') {
    if (!isset($_GET['id']) || !isset($_GET['delta'])) {
        die;
    }
    $LMS->MoveEvent($_GET['id'], $_GET['delta']);
    header('Content-Type: application/json');
    die('[]');
}

$default_forward_day_limit = ConfigHelper::getConfig('timetable.default_forward_day_limit', ConfigHelper::getConfig('phpui.timetable_days_forward'));
$hide_disabled_users = ConfigHelper::checkConfig('timetable.hide_disabled_users', ConfigHelper::checkConfig('phpui.timetable_hide_disabled_users'));
$show_delayed_events = ConfigHelper::checkConfig('timetable.show_delayed_events', ConfigHelper::checkConfig('phpui.timetable_overdue_events'));
$big_networks = ConfigHelper::checkConfig('phpui.big_networks');
$params['userid'] = Auth::GetCurrentUser();

if (!empty($filter['edate'])) {
    [$filter['year'], $filter['month'], $filter['day']] = explode('/', $filter['edate']);
}

if (!isset($_POST['loginform']) && !empty($_POST)) {
    [$filter['year'], $filter['month'], $filter['day']] = explode('/', !empty($_POST['date']) ? $_POST['date'] : date('Y/m/d'));

    if (isset($filter['edate']) && $filter['edate']) {
        if (empty($filter['month'])) {
            if ($filter['month'] != $_POST['month']) {
                $filter['day'] = 1;
            }
        }
        if (empty($filter['year'])) {
            if ($filter['year'] != $_POST['year']) {
                $filter['day'] = 1;
            }
        }
    } else {
        $day = date('j', time());
    }

    $filter['userand'] = isset($_POST['userand']) ? intval($_POST['userand']) : 0;
    $filter['userid'] = $_POST['a'] ?? null;
    $filter['usergroups'] = $_POST['g'] ?? null;
    $filter['customerid'] = $_POST['u'] ?? null;
    $filter['type'] = $_POST['type'] ?? null;
    $filter['privacy'] = isset($_POST['privacy']) ? intval($_POST['privacy']) : null;
    $filter['closed'] = $_POST['closed'] ?? null;
    $filter['netnodeid'] = (isset($_POST['netnodeid']) && $LMS->NetNodeExists(intval($_POST['netnodeid']))) ? intval($_POST['netnodeid']) : null;
    $filter['netdevid'] = (isset($_POST['netdevid']) && $LMS->NetDevExists(intval($_POST['netdevid']))) ? intval($_POST['netdevid']) : null;
    $filter['divisionid'] = isset($_POST['divisionid']) ? Utils::filterIntegers($_POST['divisionid']) : array();

    if (isset($_POST['switchToSchedule'])) {
        $SESSION->save('timetableFiler', $filter, true);
        $SESSION->redirect('?m=eventschedule&switchToSchedule=1');
        die();
    }
} elseif (isset($_GET['switchToTimetable'])) {
    $SESSION->restore('schedulerFiler', $filter, true);
} else {
    if ($SESSION->is_set('eld')) {
        $filter = array_merge($filter, $SESSION->get('eld'));
    }

    if (isset($_GET['day']) && isset($_GET['month']) && isset($_GET['year'])) {
        if (isset($_GET['day'])) {
            $filter['day'] = $_GET['day'];
        } elseif ($filter['edate']) {
            if ($filter['month'] != $_GET['month'] || $filter['year'] != $_GET['year']) {
                $filter['day'] = 1;
            }
        } else {
            $filter['day'] = 1;
        }

        if (isset($_GET['month'])) {
            $filter['month'] = $_GET['month'];
        }

        if (isset($_GET['year'])) {
            $filter['year'] = $_GET['year'];
        }
    }

    $filter['userand'] = isset($_GET['userand']) ? intval($_GET['userand']) : 0;

    if (isset($_GET['a'])) {
        $filter['userid'] = $_GET['a'];
    }

    if (isset($_GET['g'])) {
        $filter['usergroups'] = $_GET['g'];
    }

    if (isset($_GET['u'])) {
        $filter['customerid'] = $_GET['u'] == 'all' ? null : $_GET['u'];
    }

    if (isset($_GET['type'])) {
        $filter['type'] = $_GET['type'] == 'all' ? null : $_GET['type'];
    }

    if (isset($_GET['privacy'])) {
        $filter['privacy'] = $_GET['privacy'] == 'all' ? null : $_GET['privacy'];
    }

    if (isset($_GET['closed'])) {
        $filter['closed'] = $_GET['closed'] = 'all' ? '' : $_GET['closed'];
    } elseif (!isset($filter['closed'])) {
        $allevents = ConfigHelper::checkConfig(
            'timetable.default_show_closed_events',
            ConfigHelper::checkConfig('phpui.default_show_closed_events')
        );

        $filter['closed'] = $allevents ? '' : 0;
    }
}

if (isset($filter['year']) && isset($filter['month']) && isset($filter['day'])) {
    $filter['edate'] = sprintf('%04d/%02d/%02d', $filter['year'], $filter['month'], $filter['day']);
}

$SESSION->save('eld', array(
    'year' => $filter['year'] ?? null,
    'month' => $filter['month'] ?? null,
    'day' => $filter['day'] ?? null,
    'edate' => $filter['edate'] ?? null,
));

$SESSION->saveFilter($filter, null, array('year', 'month', 'day', 'edate'), true);

if (!isset($filter['day'])) {
    $filter['day'] = date('j');
}

if (!isset($filter['month'])) {
    $filter['month'] = date('m');
}

if (!isset($filter['year'])) {
    $filter['year'] = date('Y');
}

$layout['pagetitle'] = trans('Timetable');

$filter['forward'] = $default_forward_day_limit;
$eventlist = $LMS->GetEventList($filter);

if ($eventlist) {
    foreach ($eventlist as $ekey => &$item) {
        if ($item['userlist']) {
            $usersWithoutAccess = 0;
            $usersCount = count($item['userlist']);
            foreach ($item['userlist'] as $uidx => $user) {
                if (!$LMS->checkUserAccess($user['id'])) {
                        $usersWithoutAccess++;
                        $item['userlist'][$uidx]['noaccess'] = 1;
                }
            }
            if ($hide_disabled_users && $usersWithoutAccess == $usersCount) {
                $item['hide'] = 1;
            }
        }
    }
    unset($item);
}

$overdue_events_only = isset($_GET['overdue_events_only']) ? 1 : 0;
$force_overdue_events = isset($_GET['force_overdue_events']) ? 1 : 0;

$overdue_events = array();

if ($show_delayed_events && empty($overdue_events_only)) {
    $params['forward'] = -1;
    $params['closed'] = 0;
    $params['type'] = 0;
    $params['count'] = true;
    $count = $LMS->GetEventList($params);
    $params['count'] = false;
    if ($count > 100) {
        $params['limit'] = 100;
        $SMARTY->assign('overdue_limited', 1);
    } else {
        $params['limit'] = $count;
    }
    $overdue_events = $LMS->GetEventList($params);
} elseif (!empty($overdue_events_only) || !empty($force_overdue_events)) {
    if (empty($force_overdue_events)) {
        unset($params['userid']);
    }
    $params['forward'] = -1;
    $params['closed'] = 0;
    $params['type'] = 0;
    $params['count'] = true;
    $count = $LMS->GetEventList($params);
    $params['count'] = false;
    if ($count > 100) {
        $params['limit'] = 100;
        $SMARTY->assign('overdue_limited', 1);
    } else {
        $params['limit'] = $count;
    }
    $overdue_events = $LMS->GetEventList($params);
}

// create calendars
for ($i = 0; $i < $default_forward_day_limit; $i++) {
    $dt = mktime(0, 0, 0, $filter['month'], $filter['day'] + $i, $filter['year']);
    $daylist[$i] = $dt;
}

$date = mktime(0, 0, 0, $filter['month'], $filter['day'], $filter['year']);
$daysnum = date('t', $date);
for ($i = 1; $i < $daysnum + 1; $i++) {
    $date = mktime(0, 0, 0, $filter['month'], $i, $filter['year']);
    $days['day'][] = date('j', $date);
    $days['dow'][] = date('w', $date);
    $days['sel'][] = ($i == $filter['day']);
}

$SESSION->add_history_entry();

$SESSION->remove('backid');

$today = mktime(0, 0, 0, date('n'), date('j'), date('Y'));

$visible_users = null;
$usergroups = $LMS->UsergroupGetList();
if (!empty($usergroups)) {
    if (!empty($filter['usergroups'])) {
        $visible_users = array();
        foreach ($usergroups as $usergroup) {
            if (!empty($usergroup['users']) && in_array($usergroup['id'], $filter['usergroups'])) {
                $visible_users = array_merge($visible_users, explode(',', $usergroup['users']));
            }
        }
        $visible_users = array_unique($visible_users);
    }
}

$SMARTY->assign(array(
    'today' => $today,
    'period' => $LMS->GetTimetableRange(),
    'eventlist' => $eventlist,
    'overdue_events' => $overdue_events,
    'days' => $days,
    'daylist' => $daylist,
    'date' => $date,
    'error' => $error,
    'netnodes' => $LMS->GetNetNodes(),
    'netdevices' => $LMS->GetNetDevList('name,asc', array('short' => true)),
    'visible_users' => $visible_users,
    'usergroups' => $usergroups,
    'overdue_events_only' => $overdue_events_only,
    'getHolidays', getHolidays($year ?? null),
    'customerlist' => $big_networks ? null : $LMS->GetCustomerNames(),
    'divisions' => $LMS->GetDivisions(array('userid' => Auth::GetCurrentUser())),
));
$SMARTY->display('event/eventlist.html');
