src/applications/calendar/xaction/PhabricatorCalendarEventForkTransaction.php

   1 <?php
   2
   3 final class PhabricatorCalendarEventForkTransaction
   4   extends PhabricatorCalendarEventTransactionType {
   5
   6   const TRANSACTIONTYPE = 'calendar.fork';
   7
   8   public function generateOldValue($object) {
   9     return false;
  10   }
  11
  12   public function shouldHide() {
  13     // This transaction is purely an internal implementation detail which
  14     // supports editing groups of events like "All Future Events".
  15     return true;
  16   }
  17
  18   public function applyInternalEffects($object, $value) {
  19     $parent = $object->getParentEvent();
  20
  21     $object->setInstanceOfEventPHID(null);
  22     $object->attachParentEvent(null);
  23
  24     $rrule = $parent->newRecurrenceRule();
  25     $object->setRecurrenceRule($rrule);
  26
  27     $until = $parent->newUntilDateTime();
  28     if ($until) {
  29       $object->setUntilDateTime($until);
  30     }
  31
  32     $old_sequence_index = $object->getSequenceIndex();
  33     $object->setSequenceIndex(0);
  34
  35     // Stop the parent event from recurring after the start date of this event.
  36     // Since the "until" time is inclusive, rewind it by one second. We could
  37     // figure out the previous instance's time instead or use a COUNT, but this
  38     // seems simpler as long as it doesn't cause any issues.
  39     $until_cutoff = $object->newStartDateTime()
  40       ->newRelativeDateTime('-PT1S')
  41       ->newAbsoluteDateTime();
  42
  43     $parent->setUntilDateTime($until_cutoff);
  44     $parent->save();
  45
  46     // NOTE: If we implement "COUNT" on editable events, we need to adjust
  47     // the "COUNT" here and divide it up between the parent and the fork.
  48
  49     // Make all following children of the old parent children of this node
  50     // instead.
  51     $conn = $object->establishConnection('w');
  52     queryfx(
  53       $conn,
  54       'UPDATE %T SET
  55         instanceOfEventPHID = %s,
  56         sequenceIndex = (sequenceIndex - %d)
  57         WHERE instanceOfEventPHID = %s
  58         AND utcInstanceEpoch > %d',
  59       $object->getTableName(),
  60       $object->getPHID(),
  61       $old_sequence_index,
  62       $parent->getPHID(),
  63       $object->getUTCInstanceEpoch());
  64   }
  65
  66 }