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export_execute.php
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<?php // $Id$
require_once('../config.php');
//require_once($CFG->dirroot.'/course/lib.php');
require_once($CFG->dirroot.'/calendar/lib.php');
require_once($CFG->libdir.'/bennu/bennu.inc.php');
require_login();
if(isguest()) {
redirect($CFG->wwwroot.'/calendar/view.php');
}
$action = optional_param('action', '', PARAM_ALPHA);
$course = optional_param('course', 0);
$day = optional_param('cal_d', 0, PARAM_INT);
$mon = optional_param('cal_m', 0, PARAM_INT);
$yr = optional_param('cal_y', 0, PARAM_INT);
$what = optional_param('preset_what', '', PARAM_ALPHA);
$time = optional_param('preset_time', '', PARAM_ALPHA);
$now = usergetdate(time());
// Let's see if we have sufficient and correct data
$allowed_what = array('all', 'courses');
$allowed_time = array('weeknow', 'weeknext', 'monthnow', 'monthnext');
if(!empty($what) && !empty($time)) {
if(in_array($what, $allowed_what) && in_array($time, $allowed_time)) {
$courses = array() + $USER->student + $USER->teacher;
$courses = array_keys($courses);
switch($time) {
case 'weeknow':
$startweekday = get_user_preferences('calendar_startwday', CALENDAR_STARTING_WEEKDAY);
$startmonthday = find_day_in_month($now['mday'] - 6, $startweekday, $now['mon'], $now['year']);
$startmonth = $now['mon'];
$startyear = $now['year'];
if($startmonthday > calendar_days_in_month($startmonth, $startyear)) {
list($startmonth, $startyear) = calendar_add_month($startmonth, $startyear);
$startmonthday = find_day_in_month(1, $startweekday, $startmonth, $startyear);
}
$timestart = make_timestamp($startyear, $startmonth, $startmonthday);
$endmonthday = $startmonthday + 7;
$endmonth = $startmonth;
$endyear = $startyear;
if($endmonthday > calendar_days_in_month($endmonth, $endyear)) {
list($endmonth, $endyear) = calendar_add_month($endmonth, $endyear);
$endmonthday = find_day_in_month(1, $startweekday, $endmonth, $endyear);
}
$timeend = make_timestamp($endyear, $endmonth, $endmonthday) - 1;
break;
case 'weeknext':
$startweekday = get_user_preferences('calendar_startwday', CALENDAR_STARTING_WEEKDAY);
$startmonthday = find_day_in_month($now['mday'] + 1, $startweekday, $now['mon'], $now['year']);
$startmonth = $now['mon'];
$startyear = $now['year'];
if($startmonthday > calendar_days_in_month($startmonth, $startyear)) {
list($startmonth, $startyear) = calendar_add_month($startmonth, $startyear);
$startmonthday = find_day_in_month(1, $startweekday, $startmonth, $startyear);
}
$timestart = make_timestamp($startyear, $startmonth, $startmonthday);
$endmonthday = $startmonthday + 7;
$endmonth = $startmonth;
$endyear = $startyear;
if($endmonthday > calendar_days_in_month($endmonth, $endyear)) {
list($endmonth, $endyear) = calendar_add_month($endmonth, $endyear);
$endmonthday = find_day_in_month(1, $startweekday, $endmonth, $endyear);
}
$timeend = make_timestamp($endyear, $endmonth, $endmonthday) - 1;
break;
case 'monthnow':
$timestart = make_timestamp($now['year'], $now['mon'], 1);
$timeend = make_timestamp($now['year'], $now['mon'], calendar_days_in_month($now['mon'], $now['year']), 23, 59, 59);
break;
case 'monthnext':
list($nextmonth, $nextyear) = calendar_add_month($now['mon'], $now['year']);
$timestart = make_timestamp($nextyear, $nextmonth, 1);
$timeend = make_timestamp($nextyear, $nextmonth, calendar_days_in_month($nextmonth, $nextyear), 23, 59, 59);
break;
}
/*
print_object($now);
print_object('start: '. $timestart);
print_object('end: '. $timeend);
*/
}
else {
// Parameters given but incorrect, redirect back to export page
redirect($CFG->wwwroot.'/calendar/export.php');
echo "aa";
die();
}
}
$whereclause = calendar_sql_where($timestart, $timeend, false, false, $courses, false);
if($whereclause === false) {
$events = array();
}
else {
$events = get_records_select('event', $whereclause, 'timestart');
}
if(empty($events)) {
// TODO
die('no events');
}
$ical = new iCalendar;
$ical->add_property('method', 'PUBLISH');
foreach($events as $event) {
$ev = new iCalendar_event;
$ev->add_property('summary', $event->name);
$ev->add_property('description', $event->description);
$ev->add_property('class', 'public'); // PUBLIC / PRIVATE / CONFIDENTIAL
$ev->add_property('last-modified', 0); // lastmodified
$ev->add_property('dtstamp', Bennu::timestamp_to_datetime()); // now
$ev->add_property('dtstart', Bennu::timestamp_to_datetime($event->timestart)); // when event starts
$ev->add_property('duration', 0); // when event starts
$ical->add_component($ev);
}
$serialized = $ical->serialize();
if(empty($serialized)) {
// TODO
die('bad serialization');
}
//IE compatibiltiy HACK!
if(ini_get('zlib.output_compression')) {
ini_set('zlib.output_compression', 'Off');
}
$filename = 'icalexport.ics';
header('Last-Modified: '. gmdate('D, d M Y H:i:s', time()) .' GMT');
header('Cache-Control: private, must-revalidate, pre-check=0, post-check=0, max-age=0');
header('Expires: '. gmdate('D, d M Y H:i:s', 0) .'GMT');
header('Pragma: no-cache');
header('Accept-Ranges: none'); // Comment out if PDFs do not work...
header('Content-disposition: attachment; filename='.$filename);
header('Content-length: '.strlen($serialized));
header('Content-type: text/plain');
echo $serialized;
?>