public function iCalFeed($post = null, $eventCatSlug = null, $eventDate = null)
{
$tribeEvents = TribeEvents::instance();
$postId = $post ? $post->ID : null;
$getstring = isset($_GET['ical']) ? $_GET['ical'] : null;
$wpTimezoneString = get_option('timezone_string');
$postType = TribeEvents::POSTTYPE;
$events = '';
$lastBuildDate = '';
$eventsTestArray = array();
$blogHome = get_bloginfo('url');
$blogName = get_bloginfo('name');
$includePosts = $postId ? '&include=' . $postId : '';
$eventsCats = $eventCatSlug ? '&' . TribeEvents::TAXONOMY . '=' . $eventCatSlug : '';
if ($post) {
$eventPosts = array();
$eventPosts[] = $post;
} else {
$eventPosts = get_posts('posts_per_page=-1&post_type=' . $postType . $includePosts . $eventsCats);
}
foreach ($eventPosts as $eventPost) {
if ($eventDate) {
$duration = TribeDateUtils::timeBetween($eventPost->EventStartDate, $eventPost->EventEndDate);
$startDate = TribeDateUtils::addTimeToDate($eventDate, TribeDateUtils::timeOnly($eventPost->EventStartDate));
$endDate = TribeDateUtils::dateAndTime(strtotime($startDate) + $duration, true);
} else {
$startDate = $eventPost->EventStartDate;
$endDate = $eventPost->EventEndDate;
}
// convert 2010-04-08 00:00:00 to 20100408T000000 or YYYYMMDDTHHMMSS
$startDate = str_replace(array('-', ' ', ':'), array('', 'T', ''), $startDate);
$endDate = str_replace(array('-', ' ', ':'), array('', 'T', ''), $endDate);
if (get_post_meta($eventPost->ID, '_EventAllDay', true) == 'yes') {
$startDate = substr($startDate, 0, 8);
$endDate = substr($endDate, 0, 8);
// endDate bumped ahead one day to counter iCal's off-by-one error
$endDateStamp = strtotime($endDate);
$endDate = date('Ymd', $endDateStamp + 86400);
$type = 'DATE';
} else {
$type = 'DATE-TIME';
}
$description = preg_replace("/[\n\t\r]/", ' ', strip_tags($eventPost->post_content));
// add fields to iCal output
$item = array();
$item[] = "DTSTART;VALUE={$type}:" . $startDate;
$item[] = "DTEND;VALUE={$type}:" . $endDate;
$item[] = 'DTSTAMP:' . date('Ymd\\THis', time());
$item[] = 'CREATED:' . str_replace(array('-', ' ', ':'), array('', 'T', ''), $eventPost->post_date);
$item[] = 'LAST-MODIFIED:' . str_replace(array('-', ' ', ':'), array('', 'T', ''), $eventPost->post_modified);
$item[] = 'UID:' . $eventPost->ID . '-' . strtotime($startDate) . '-' . strtotime($endDate) . '@' . $blogHome;
$item[] = 'SUMMARY:' . $eventPost->post_title;
$item[] = 'DESCRIPTION:' . str_replace(',', '\\,', $description);
$item[] = 'LOCATION:' . html_entity_decode($tribeEvents->fullAddressString($eventPost->ID), ENT_QUOTES);
$item[] = 'URL:' . get_permalink($eventPost->ID);
$item = apply_filters('tribe_ical_feed_item', $item, $eventPost);
$events .= "BEGIN:VEVENT\n" . implode("\n", $item) . "\nEND:VEVENT\n";
}
header('Content-type: text/calendar');
header('Content-Disposition: attachment; filename="iCal-TribeEvents.ics"');
$content = "BEGIN:VCALENDAR\n";
$content .= "VERSION:2.0\n";
$content .= 'PRODID:-//' . $blogName . ' - ECPv' . TribeEvents::VERSION . "//NONSGML v1.0//EN\n";
$content .= "CALSCALE:GREGORIAN\n";
$content .= "METHOD:PUBLISH\n";
$content .= 'X-WR-CALNAME:' . apply_filters('tribe_ical_feed_calname', $blogName) . "\n";
$content .= 'X-ORIGINAL-URL:' . $blogHome . "\n";
$content .= 'X-WR-CALDESC:Events for ' . $blogName . "\n";
if ($wpTimezoneString) {
$content .= 'X-WR-TIMEZONE:' . $wpTimezoneString . "\n";
}
$content = apply_filters('tribe_ical_properties', $content);
$content .= $events;
$content .= 'END:VCALENDAR';
echo $content;
exit;
}
