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phab/src/applications/conpherence/xaction/ConpherenceThreadParticipantsTransaction.php
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ConpherenceThreadParticipantsTransaction.php
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<?php
final class ConpherenceThreadParticipantsTransaction
extends ConpherenceThreadTransactionType {
const TRANSACTIONTYPE = 'participants';
public function generateOldValue($object) {
return $object->getParticipantPHIDs();
}
public function generateNewValue($object, $value) {
$old = $this->generateOldValue($object);
return $this->getPHIDList($old, $value);
}
public function applyExternalEffects($object, $value) {
$participants = $object->getParticipants();
$old = array_keys($participants);
$new = $value;
$add_map = array_fuse(array_diff($new, $old));
$rem_map = array_fuse(array_diff($old, $new));
foreach ($rem_map as $phid) {
$remove_participant = $participants[$phid];
$remove_participant->delete();
unset($participants[$phid]);
}
foreach ($add_map as $phid) {
if (isset($participants[$phid])) {
continue;
}
$participants[$phid] = id(new ConpherenceParticipant())
->setConpherencePHID($object->getPHID())
->setParticipantPHID($phid)
->setSeenMessageCount(0)
->save();
}
$object->attachParticipants($participants);
}
public function getTitle() {
$old = $this->getOldValue();
$new = $this->getNewValue();
$add = array_diff($new, $old);
$rem = array_diff($old, $new);
$author_phid = $this->getAuthorPHID();
if ($add && $rem) {
return pht(
'%s edited participant(s), added %d: %s; removed %d: %s.',
$this->renderAuthor(),
count($add),
$this->renderHandleList($add),
count($rem),
$this->renderHandleList($rem));
} else if ((in_array($author_phid, $add)) && (count($add) == 1)) {
return pht(
'%s joined the room.',
$this->renderAuthor());
} else if ((in_array($author_phid, $rem)) && (count($rem) == 1)) {
return pht(
'%s left the room.',
$this->renderAuthor());
} else if ($add) {
return pht(
'%s added %d participant(s): %s.',
$this->renderAuthor(),
count($add),
$this->renderHandleList($add));
} else {
return pht(
'%s removed %d participant(s): %s.',
$this->renderAuthor(),
count($rem),
$this->renderHandleList($rem));
}
}
public function validateTransactions($object, array $xactions) {
$errors = array();
foreach ($xactions as $xaction) {
$old = $object->getParticipantPHIDs();
$new = $xaction->getNewValue();
$new = $this->getPHIDList($old, $new);
$add_map = array_fuse(array_diff($new, $old));
$rem_map = array_fuse(array_diff($old, $new));
foreach ($add_map as $user_phid) {
$user = id(new PhabricatorPeopleQuery())
->setViewer($this->getActor())
->withPHIDs(array($user_phid))
->executeOne();
if (!$user) {
$errors[] = $this->newInvalidError(
pht(
'Participant PHID "%s" is not a valid user PHID.',
$user_phid));
continue;
}
}
}
return $errors;
}
public function getRequiredCapabilities(
$object,
PhabricatorApplicationTransaction $xaction) {
$old_map = array_fuse($xaction->getOldValue());
$new_map = array_fuse($xaction->getNewValue());
$add = array_keys(array_diff_key($new_map, $old_map));
$rem = array_keys(array_diff_key($old_map, $new_map));
$actor_phid = $this->getActingAsPHID();
$is_join = (($add === array($actor_phid)) && !$rem);
$is_leave = (($rem === array($actor_phid)) && !$add);
if ($is_join) {
// Anyone can join a thread they can see.
return null;
}
if ($is_leave) {
// Anyone can leave a thread.
return null;
}
// You need CAN_EDIT to add or remove participants. For additional
// discussion, see D17696 and T4411.
return PhabricatorPolicyCapability::CAN_EDIT;
}
}
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