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phorge/src/applications/calendar/xaction/PhabricatorCalendarEventForkTransaction.php
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PhabricatorCalendarEventForkTransaction.php
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<?php
final class PhabricatorCalendarEventForkTransaction
extends PhabricatorCalendarEventTransactionType {
const TRANSACTIONTYPE = 'calendar.fork';
public function generateOldValue($object) {
return false;
}
public function shouldHide() {
// This transaction is purely an internal implementation detail which
// supports editing groups of events like "All Future Events".
return true;
}
public function applyInternalEffects($object, $value) {
$parent = $object->getParentEvent();
$object->setInstanceOfEventPHID(null);
$object->attachParentEvent(null);
$rrule = $parent->newRecurrenceRule();
$object->setRecurrenceRule($rrule);
$until = $parent->newUntilDateTime();
if ($until) {
$object->setUntilDateTime($until);
}
$old_sequence_index = $object->getSequenceIndex();
$object->setSequenceIndex(0);
// Stop the parent event from recurring after the start date of this event.
// Since the "until" time is inclusive, rewind it by one second. We could
// figure out the previous instance's time instead or use a COUNT, but this
// seems simpler as long as it doesn't cause any issues.
$until_cutoff = $object->newStartDateTime()
->newRelativeDateTime('-PT1S')
->newAbsoluteDateTime();
$parent->setUntilDateTime($until_cutoff);
$parent->save();
// NOTE: If we implement "COUNT" on editable events, we need to adjust
// the "COUNT" here and divide it up between the parent and the fork.
// Make all following children of the old parent children of this node
// instead.
$conn = $object->establishConnection('w');
queryfx(
$conn,
'UPDATE %T SET
instanceOfEventPHID = %s,
sequenceIndex = (sequenceIndex - %d)
WHERE instanceOfEventPHID = %s
AND utcInstanceEpoch > %d',
$object->getTableName(),
$object->getPHID(),
$old_sequence_index,
$parent->getPHID(),
$object->getUTCInstanceEpoch());
}
}

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