Chat::sendPushUnreadOpponent

protected function sendPushUnreadOpponent(string $chatMessageStatus, int $unreadTo, ?array $lastMessageStatuses): void
{
	$pushMessage = [
		'module_id' => 'im',
		'command' => 'unreadMessageChatOpponent',
		'expiry' => 600,
		'params' => [
			'dialogId' => $this->getDialogId(),
			'chatId' => $this->chatId,
			'userId' => $this->getContext()->getUserId(),
			'chatMessageStatus' => $chatMessageStatus,
			'unreadTo' => $unreadTo,
			'lastMessageStatuses' => $lastMessageStatuses ?? [],
		],
		'extra' => BitrixImCommon::getPullExtra()
	];

	$viewsByGroups = $this->getLastMessageViewsByGroups();

	foreach ($viewsByGroups as $view)
	{
		$pushMessage['params']['lastMessageViews'] = ImCommon::toJson($view['VIEW_INFO']);
		$usersForPush = $this->getUsersForPush();
		$recipient = array_intersect($usersForPush, $view['USERS']);
		BitrixPullEvent::add($recipient, $pushMessage);
	}
}