/**
* Vote commemt
*
* @param \MongoId $commentId
* @param string $ref
* @param int $uid
* @param int $value
* @return int|null
* @throws InvalidArgumentException
*/
private static function vote(\MongoId $commentId, $ref, $uid, $value)
{
if (!is_string($ref)) {
throw new InvalidArgumentException('ref', 'type_invalid');
}
if (!mb_check_encoding($ref, 'UTF-8')) {
throw new InvalidArgumentException('ref', 'encoding_invalid');
}
if (!Validator::int()->validate($uid)) {
throw new InvalidArgumentException('uid', 'type_invalid');
}
return VoteUtil::vote(Application::coll('Comment'), ['_id' => $commentId, 'ref' => $ref], $uid, $value);
}
