/**
* Returns 'join' if this transaction causes the acting user ONLY to join the
* project.
*
* Returns 'leave' if this transaction causes the acting user ONLY to leave
* the project.
*
* Returns null in all other cases.
*/
private function isJoinOrLeaveTransaction(PhabricatorProjectTransaction $xaction)
{
$type = $xaction->getTransactionType();
if ($type != PhabricatorProjectTransactionType::TYPE_MEMBERS) {
return null;
}
switch ($type) {
case PhabricatorProjectTransactionType::TYPE_MEMBERS:
$old = $xaction->getOldValue();
$new = $xaction->getNewValue();
$add = array_diff($new, $old);
$rem = array_diff($old, $new);
if (count($add) > 1) {
return null;
} else {
if (count($add) == 1) {
if (reset($add) != $this->user->getPHID()) {
return null;
} else {
return 'join';
}
}
}
if (count($rem) > 1) {
return null;
} else {
if (count($rem) == 1) {
if (reset($rem) != $this->user->getPHID()) {
return null;
} else {
return 'leave';
}
}
}
break;
}
return true;
}
private function transactionHasEffect(PhabricatorProjectTransaction $xaction)
{
return $xaction->getOldValue() !== $xaction->getNewValue();
}
