Task::onReplyReceived

static function onReplyReceived(Event $event)
{
	$taskId = intval($event->getParameter('entity_id'));
	$userId = intval($event->getParameter('from'));
	$message = trim($event->getParameter('content'));
	$attachments = $event->getParameter('attachments');
	if(!is_array($attachments))
	{
		$attachments = array();
	}

	// message can not be empty, so if only attachments supplied, use dummy message
	if (
		$message == ''
		&& count($attachments) > 0
	)
	{
		$message = Loc::getMessage('TASKS_MAIL_ATTACHMENTS');
	}

	if (
		$taskId <= 0
		|| $userId <= 0
		|| $message == ''
	)
	{
		return false;
	}

	list($message, $files) = static::processAttachments($message, $attachments, $userId);

	try
	{
		if (Loader::includeModule('disk'))
		{
			BitrixDiskUfFileUserType::setValueForAllowEdit("FORUM_MESSAGE", true);
		}

		// forum will check rights, no need to worry
		BitrixTasksIntegrationForumTaskComment::add($taskId, array(
			'POST_MESSAGE' => $message,
			'AUTHOR_ID' => $userId,
			'SOURCE_ID' => 'EMAIL',
			'UF_FORUM_MESSAGE_DOC' => $files,
		));
	}
	catch(TasksException $e) // todo: get rid of this annoying catch by making BitrixTasks*Exception classes inherited from TasksException (dont forget about code)
	{
		if($e->checkOfType(TasksException::TE_TASK_NOT_FOUND_OR_NOT_ACCESSIBLE))
		{
			return false;
		}
		else
		{
			throw $e; // let it log
		}
	}
	catch(BitrixTasksAccessDeniedException $e) // task not found or not accessible
	{
		return false;
	}

	return true; // required, dont remove
}