FlagDeleteConduitAPIMethod.php
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	<?php

	final class FlagDeleteConduitAPIMethod extends FlagConduitAPIMethod {

	public function getAPIMethodName() {
	return 'flag.delete';
	}

	public function getMethodDescription() {
	return pht('Clear a flag.');
	}

	protected function defineParamTypes() {
	return array(
	'id' => 'optional id',
	'objectPHID' => 'optional phid',
	);
	}

	protected function defineReturnType() {
	return 'dict \| null';
	}

	protected function defineErrorTypes() {
	return array(
	'ERR_NOT_FOUND' => pht('Bad flag ID.'),
	'ERR_WRONG_USER' => pht('You are not the creator of this flag.'),
	'ERR_NEED_PARAM' => pht('Must pass an id or an objectPHID.'),
	);
	}

	protected function execute(ConduitAPIRequest $request) {
	$id = $request->getValue('id');
	$object = $request->getValue('objectPHID');
	if ($id) {
	$flag = id(new PhabricatorFlag())->load($id);
	if (!$flag) {
	throw new ConduitException('ERR_NOT_FOUND');
	}
	if ($flag->getOwnerPHID() != $request->getUser()->getPHID()) {
	throw new ConduitException('ERR_WRONG_USER');
	}
	} else if ($object) {
	$flag = id(new PhabricatorFlag())->loadOneWhere(
	'objectPHID = %s AND ownerPHID = %s',
	$object,
	$request->getUser()->getPHID());
	if (!$flag) {
	return null;
	}
	} else {
	throw new ConduitException('ERR_NEED_PARAM');
	}
	$this->attachHandleToFlag($flag, $request->getUser());
	$ret = $this->buildFlagInfoDictionary($flag);
	$flag->delete();
	return $ret;
	}

	}