/**
* Returns free-busy information for a specific address. The returned
* data is an array containing the following properties:
*
* calendar-data : A VFREEBUSY VObject
* request-status : an iTip status code.
* href: The principal's email address, as requested
*
* The following request status codes may be returned:
* * 2.0;description
* * 3.7;description
*
* @param string $email address
* @param DateTimeInterface $start
* @param DateTimeInterface $end
* @param VObject\Component $request
* @return array
*/
protected function getFreeBusyForEmail($email, \DateTimeInterface $start, \DateTimeInterface $end, VObject\Component $request)
{
$caldavNS = '{' . self::NS_CALDAV . '}';
$aclPlugin = $this->server->getPlugin('acl');
if (substr($email, 0, 7) === 'mailto:') {
$email = substr($email, 7);
}
$result = $aclPlugin->principalSearch(['{http://sabredav.org/ns}email-address' => $email], ['{DAV:}principal-URL', $caldavNS . 'calendar-home-set', $caldavNS . 'schedule-inbox-URL', '{http://sabredav.org/ns}email-address']);
if (!count($result)) {
return ['request-status' => '3.7;Could not find principal', 'href' => 'mailto:' . $email];
}
if (!isset($result[0][200][$caldavNS . 'calendar-home-set'])) {
return ['request-status' => '3.7;No calendar-home-set property found', 'href' => 'mailto:' . $email];
}
if (!isset($result[0][200][$caldavNS . 'schedule-inbox-URL'])) {
return ['request-status' => '3.7;No schedule-inbox-URL property found', 'href' => 'mailto:' . $email];
}
$homeSet = $result[0][200][$caldavNS . 'calendar-home-set']->getHref();
$inboxUrl = $result[0][200][$caldavNS . 'schedule-inbox-URL']->getHref();
// Grabbing the calendar list
$objects = [];
$calendarTimeZone = new DateTimeZone('UTC');
foreach ($this->server->tree->getNodeForPath($homeSet)->getChildren() as $node) {
if (!$node instanceof ICalendar) {
continue;
}
$sct = $caldavNS . 'schedule-calendar-transp';
$ctz = $caldavNS . 'calendar-timezone';
$props = $node->getProperties([$sct, $ctz]);
if (isset($props[$sct]) && $props[$sct]->getValue() == ScheduleCalendarTransp::TRANSPARENT) {
// If a calendar is marked as 'transparent', it means we must
// ignore it for free-busy purposes.
continue;
}
$aclPlugin->checkPrivileges($homeSet . $node->getName(), $caldavNS . 'read-free-busy');
if (isset($props[$ctz])) {
$vtimezoneObj = VObject\Reader::read($props[$ctz]);
$calendarTimeZone = $vtimezoneObj->VTIMEZONE->getTimeZone();
// Destroy circular references so PHP can garbage collect the object.
$vtimezoneObj->destroy();
}
// Getting the list of object uris within the time-range
$urls = $node->calendarQuery(['name' => 'VCALENDAR', 'comp-filters' => [['name' => 'VEVENT', 'comp-filters' => [], 'prop-filters' => [], 'is-not-defined' => false, 'time-range' => ['start' => $start, 'end' => $end]]], 'prop-filters' => [], 'is-not-defined' => false, 'time-range' => null]);
$calObjects = array_map(function ($url) use($node) {
$obj = $node->getChild($url)->get();
return $obj;
}, $urls);
$objects = array_merge($objects, $calObjects);
}
$inboxProps = $this->server->getProperties($inboxUrl, $caldavNS . 'calendar-availability');
$vcalendar = new VObject\Component\VCalendar();
$vcalendar->METHOD = 'REPLY';
$generator = new VObject\FreeBusyGenerator();
$generator->setObjects($objects);
$generator->setTimeRange($start, $end);
$generator->setBaseObject($vcalendar);
$generator->setTimeZone($calendarTimeZone);
if ($inboxProps) {
$generator->setVAvailability(VObject\Reader::read($inboxProps[$caldavNS . 'calendar-availability']));
}
$result = $generator->getResult();
$vcalendar->VFREEBUSY->ATTENDEE = 'mailto:' . $email;
$vcalendar->VFREEBUSY->UID = (string) $request->VFREEBUSY->UID;
$vcalendar->VFREEBUSY->ORGANIZER = clone $request->VFREEBUSY->ORGANIZER;
return ['calendar-data' => $result, 'request-status' => '2.0;Success', 'href' => 'mailto:' . $email];
}
