/** * Merges all calendar objects, and builds one big ics export * * @param array $nodes * @return string */ public function generateICS(array $nodes) { $calendar = new VObject\Component\VCalendar(); $calendar->version = '2.0'; if (DAV\Server::$exposeVersion) { $calendar->prodid = '-//SabreDAV//SabreDAV ' . DAV\Version::VERSION . '//EN'; } else { $calendar->prodid = '-//SabreDAV//SabreDAV//EN'; } $calendar->calscale = 'GREGORIAN'; $collectedTimezones = array(); $timezones = array(); $objects = array(); foreach ($nodes as $node) { if (!isset($node[200]['{' . Plugin::NS_CALDAV . '}calendar-data'])) { continue; } $nodeData = $node[200]['{' . Plugin::NS_CALDAV . '}calendar-data']; $nodeComp = VObject\Reader::read($nodeData); foreach ($nodeComp->children() as $child) { switch ($child->name) { case 'VEVENT': case 'VTODO': case 'VJOURNAL': $objects[] = $child; break; // VTIMEZONE is special, because we need to filter out the duplicates // VTIMEZONE is special, because we need to filter out the duplicates case 'VTIMEZONE': // Naively just checking tzid. if (in_array((string) $child->TZID, $collectedTimezones)) { continue; } $timezones[] = $child; $collectedTimezones[] = $child->TZID; break; } } } foreach ($timezones as $tz) { $calendar->add($tz); } foreach ($objects as $obj) { $calendar->add($obj); } return $calendar->serialize(); }