/**
* Validates if a component matches the given time range.
*
* This is all based on the rules specified in rfc4791, which are quite
* complex.
*
* @param Sabre_VObject_Node $component
* @param DateTime $start
* @param DateTime $end
* @return bool
*/
protected function validateTimeRange(Sabre_VObject_Node $component, $start, $end)
{
if (is_null($start)) {
$start = new DateTime('1900-01-01');
}
if (is_null($end)) {
$end = new DateTime('3000-01-01');
}
switch ($component->name) {
case 'VEVENT':
case 'VTODO':
case 'VJOURNAL':
return $component->isInTimeRange($start, $end);
case 'VALARM':
// If the valarm is wrapped in a recurring event, we need to
// expand the recursions, and validate each.
//
// Our datamodel doesn't easily allow us to do this straight
// in the VALARM component code, so this is a hack, and an
// expensive one too.
if ($component->parent->name === 'VEVENT' && $component->parent->RRULE) {
// Fire up the iterator!
$it = new Sabre_VObject_RecurrenceIterator($component->parent->parent, (string) $component->parent->UID);
while ($it->valid()) {
$expandedEvent = $it->getEventObject();
// We need to check from these expanded alarms, which
// one is the first to trigger. Based on this, we can
// determine if we can 'give up' expanding events.
$firstAlarm = null;
foreach ($expandedEvent->VALARM as $expandedAlarm) {
$effectiveTrigger = $expandedAlarm->getEffectiveTriggerTime();
if (!$firstAlarm || $effectiveTrigger < $firstAlarm) {
$firstAlarm = $effectiveTrigger;
}
if ($expandedAlarm->isInTimeRange($start, $end)) {
return true;
}
}
if ($firstAlarm > $end) {
return false;
}
$it->next();
}
return false;
} else {
return $component->isInTimeRange($start, $end);
}
case 'VFREEBUSY':
throw new Sabre_DAV_Exception_NotImplemented('time-range filters are currently not supported on ' . $component->name . ' components');
case 'COMPLETED':
case 'CREATED':
case 'DTEND':
case 'DTSTAMP':
case 'DTSTART':
case 'DUE':
case 'LAST-MODIFIED':
return $start <= $component->getDateTime() && $end >= $component->getDateTime();
default:
throw new Sabre_DAV_Exception_BadRequest('You cannot create a time-range filter on a ' . $component->name . ' component');
}
}
/**
* Validates if a component matches the given time range.
*
* This is all based on the rules specified in rfc4791, which are quite
* complex.
*
* @param Sabre_VObject_Node $component
* @param DateTime $start
* @param DateTime $end
* @return bool
*/
protected function validateTimeRange(Sabre_VObject_Node $component, $start, $end)
{
if (is_null($start)) {
$start = new DateTime('1900-01-01');
}
if (is_null($end)) {
$end = new DateTime('3000-01-01');
}
switch ($component->name) {
case 'VEVENT':
case 'VTODO':
case 'VJOURNAL':
return $component->isInTimeRange($start, $end);
case 'VALARM':
// If the valarm is wrapped in a recurring event, we need to
// expand the recursions, and validate each.
//
// Our datamodel doesn't easily allow us to do this straight
// in the VALARM component code, so this is a hack, and an
// expensive one too.
if ($component->parent->name === 'VEVENT' && $component->parent->RRULE) {
// Fire up the iterator!
$it = new Sabre_VObject_RecurrenceIterator($component->parent->parent, (string) $component->parent->UID);
while ($it->valid()) {
$expandedEvent = $it->getEventObject();
// We need to check from these expanded alarms, which
// one is the first to trigger. Based on this, we can
// determine if we can 'give up' expanding events.
$firstAlarm = null;
foreach ($expandedEvent->VALARM as $expandedAlarm) {
$effectiveTrigger = $expandedAlarm->getEffectiveTriggerTime();
if ($expandedAlarm->isInTimeRange($start, $end)) {
return true;
}
if ((string) $expandedAlarm->TRIGGER['VALUE'] === 'DATE-TIME') {
// This is an alarm with a non-relative trigger
// time, likely created by a buggy client. The
// implication is that every alarm in this
// recurring event trigger at the exact same
// time. It doesn't make sense to traverse
// further.
} else {
// We store the first alarm as a means to
// figure out when we can stop traversing.
if (!$firstAlarm || $effectiveTrigger < $firstAlarm) {
$firstAlarm = $effectiveTrigger;
}
}
}
if (is_null($firstAlarm)) {
// No alarm was found.
//
// Or technically: No alarm that will change for
// every instance of the recurrence was found,
// which means we can assume there was no match.
return false;
}
if ($firstAlarm > $end) {
return false;
}
$it->next();
}
return false;
} else {
return $component->isInTimeRange($start, $end);
}
case 'VFREEBUSY':
throw new Sabre_DAV_Exception_NotImplemented('time-range filters are currently not supported on ' . $component->name . ' components');
case 'COMPLETED':
case 'CREATED':
case 'DTEND':
case 'DTSTAMP':
case 'DTSTART':
case 'DUE':
case 'LAST-MODIFIED':
return $start <= $component->getDateTime() && $end >= $component->getDateTime();
default:
throw new Sabre_DAV_Exception_BadRequest('You cannot create a time-range filter on a ' . $component->name . ' component');
}
}
/**
* Validates if a component matches the given time range.
*
* This is all based on the rules specified in rfc4791, which are quite
* complex.
*
* @param Sabre_VObject_Node $component
* @param DateTime $start
* @param DateTime $end
* @return bool
*/
protected function validateTimeRange(Sabre_VObject_Node $component, $start, $end)
{
if (is_null($start)) {
$start = new DateTime('1900-01-01');
}
if (is_null($end)) {
$end = new DateTime('3000-01-01');
}
switch ($component->name) {
case 'VEVENT':
case 'VTODO':
case 'VJOURNAL':
return $component->isInTimeRange($start, $end);
case 'VFREEBUSY':
throw new Sabre_DAV_Exception_NotImplemented('time-range filters are currently not supported on ' . $component->name . ' components');
case 'VALARM':
$trigger = $component->TRIGGER;
if (!isset($trigger['TYPE']) || strtoupper($trigger['TYPE']) === 'DURATION') {
$triggerDuration = Sabre_VObject_DateTimeParser::parseDuration($component->TRIGGER);
$related = isset($trigger['RELATED']) && strtoupper($trigger['RELATED']) == 'END' ? 'END' : 'START';
$parentComponent = $component->parent;
if ($related === 'START') {
$effectiveTrigger = clone $parentComponent->DTSTART->getDateTime();
$effectiveTrigger->add($triggerDuration);
} else {
if ($parentComponent->name === 'VTODO') {
$endProp = 'DUE';
} elseif ($parentComponent->name === 'VEVENT') {
$endProp = 'DTEND';
} else {
throw new Sabre_DAV_Exception('time-range filters on VALARM components are only supported when they are a child of VTODO or VEVENT');
}
if (isset($parentComponent->{$endProp})) {
$effectiveTrigger = clone $parentComponent->{$endProp}->getDateTime();
$effectiveTrigger->add($triggerDuration);
} elseif (isset($parentComponent->DURATION)) {
$effectiveTrigger = clone $parentComponent->DTSTART->getDateTime();
$duration = Sabre_VObject_DateTimeParser::parseDuration($parentComponent->DURATION);
$effectiveTrigger->add($duration);
$effectiveTrigger->add($triggerDuration);
} else {
$effectiveTrigger = clone $parentComponent->DTSTART->getDateTime();
$effectiveTrigger->add($triggerDuration);
}
}
} else {
$effectiveTrigger = $trigger->getDateTime();
}
if (isset($component->DURATION)) {
$duration = Sabre_VObject_DateTimeParser::parseDuration($component->DURATION);
$repeat = (string) $component->repeat;
if (!$repeat) {
$repeat = 1;
}
$period = new DatePeriod($effectiveTrigger, $duration, (int) $repeat);
foreach ($period as $occurrence) {
if ($start <= $occurrence && $end > $occurrence) {
return true;
}
}
return false;
} else {
return $start <= $effectiveTrigger && $end > $effectiveTrigger;
}
break;
case 'COMPLETED':
case 'CREATED':
case 'DTEND':
case 'DTSTAMP':
case 'DTSTART':
case 'DUE':
case 'LAST-MODIFIED':
return $start <= $component->getDateTime() && $end >= $component->getDateTime();
default:
throw new Sabre_DAV_Exception_BadRequest('You cannot create a time-range filter on a ' . $component->name . ' component');
}
}
