/**
* download_ics_file
*
* @access public
* @return void
*/
public static function download_ics_file()
{
if (EE_Registry::instance()->REQ->is_set('ics_id')) {
$DTT_ID = EE_Registry::instance()->REQ->get('ics_id');
$datetime = EE_Registry::instance()->load_model('Datetime')->get_one_by_ID($DTT_ID);
if ($datetime instanceof EE_Datetime) {
// get related event, venues, and event categories
$event = $datetime->event();
// get related category Term object and it's name
$category = $event->first_event_category();
if ($category instanceof EE_Term) {
$category = $category->name();
}
$location = '';
// get first related venue and convert to CSV string
$venue = $event->venues(array('limit' => 1));
if (is_array($venue) && !empty($venue)) {
$venue = array_shift($venue);
if ($venue instanceof EE_Venue) {
EE_Registry::instance()->load_helper('Venue_View');
$location = espresso_venue_raw_address('inline', $venue->ID(), FALSE);
}
}
// set variables, escape strings, convert timestamps to ics format, etc
$filename = $event->slug() . '-' . $datetime->start_date('Y-m-d') . '.ics';
$organizer = EED_Ical::_escape_ICal_data(EE_Registry::instance()->CFG->organization->name);
$UID = EED_Ical::_escape_ICal_data(md5($event->name() . $event->ID() . $datetime->ID()));
$org_email = EED_Ical::_escape_ICal_data($datetime->ID());
$timestamp = date(EED_Ical::iCal_datetime_format);
$location = EED_Ical::_escape_ICal_data($location);
$summary = EED_Ical::_escape_ICal_data($event->name());
$description = EED_Ical::_escape_ICal_data(wp_strip_all_tags($event->description()));
$status = $datetime->get_active_status();
$status = $status == EE_Datetime::cancelled ? 'Cancelled' : 'Confirmed';
$status = EED_Ical::_escape_ICal_data($status);
$categories = EED_Ical::_escape_ICal_data($category);
$url = EED_Ical::_escape_ICal_data(get_permalink($event->ID()));
$dtt_start = EED_Ical::_escape_ICal_data(date(EED_Ical::iCal_datetime_format, $datetime->start()));
$dtt_end = EED_Ical::_escape_ICal_data(date(EED_Ical::iCal_datetime_format, $datetime->end()));
// set headers
header('Content-type: text/calendar; charset=utf-8');
header('Content-Disposition: attachment; filename="' . $filename . '"');
header('Cache-Control: private, max-age=0, must-revalidate');
header('Pragma: public');
header('Content-Type: application/octet-stream');
header('Content-Type: application/force-download');
header('Cache-Control: no-cache, must-revalidate');
header('Content-Transfer-Encoding: binary');
header('Expires: Sat, 26 Jul 1997 05:00:00 GMT');
// past date
ini_set('zlib.output_compression', '0');
// echo the output
echo "BEGIN:VCALENDAR" . PHP_EOL;
echo "VERSION:2.0" . PHP_EOL;
echo "PRODID:-//{$organizer}//NONSGML PDA Calendar Version 1.0//EN" . PHP_EOL;
echo "CALSCALE:GREGORIAN" . PHP_EOL;
echo "BEGIN:VEVENT" . PHP_EOL;
echo "UID:{$UID}" . PHP_EOL;
echo "ORGANIZER:MAILTO:{$org_email}" . PHP_EOL;
echo "DTSTAMP:{$timestamp}" . PHP_EOL;
echo "LOCATION:{$location}" . PHP_EOL;
echo "SUMMARY:{$summary}" . PHP_EOL;
echo "DESCRIPTION:{$description}" . PHP_EOL;
echo "STATUS:{$status}" . PHP_EOL;
echo "CATEGORIES:{$categories}" . PHP_EOL;
echo "URL;VALUE=URI:{$url}" . PHP_EOL;
echo "DTSTART:{$dtt_start}" . PHP_EOL;
echo "DTEND:{$dtt_end}" . PHP_EOL;
echo "END:VEVENT" . PHP_EOL;
echo "END:VCALENDAR" . PHP_EOL;
}
}
die;
}
/**
* _escape_ICal_description
*
* @access private
* @param string $description
* @return string
*/
private static function _escape_ICal_description($description = '')
{
//Escape spcial chars within the decription
$description = EED_Ical::_escape_ICal_data($description);
//Remove line breaks and output in iCal format
$description = str_replace(array("\r\n", "\n"), '\\n', $description);
return $description;
}
