gistfile1.java

@Slf4j
@Component
public class GroupMessageHandler implements Handler {
    private final Bot bot;
    private final MessageService messageService;

    @Autowired
    public GroupMessageHandler(@Qualifier("bot") Bot bot, MessageService messageService) {
        this.bot = bot;
        this.messageService = messageService;
    }

    @Override
    public void handle(@NotNull Update update) {
        Message message = update.getMessage();
        logger.debug("Group message received: {}", message.toString());
        
        sendProvokeMessageIfEligible(message);
    }

    private void sendProvokeMessageIfEligible(Message message) {
        if (messageService.isProvokeMessageEligible(message.getChat())) {
            Optional<ProvokeMessage> provokeMessage = messageService.getProvokeMessage();
            if (provokeMessage.isPresent()) {
                SendMessage botProvokeMessage = getSendMessageFor(message, provokeMessage.get());
                bot.execute(botProvokeMessage);
            }
        }
    }

    private SendMessage getSendMessageFor(Message message, ProvokeMessage provokeMessage) {
        SendMessage sendMessage = new SendMessage()
                .setChatId(getChatId(message))
                .setText(provokeMessage.message);

        if (provokeMessage.type == MessageType.REPLY) {
            int replyToMsgIdRandom = message.getMessageId() - randomIntWithLimit(4);
            sendMessage.setReplyToMessageId(replyToMsgIdRandom);
        }
        return sendMessage;
    }
    
    private int randomIntWithLimit(int limit){
        return ThreadLocalRandom.current().nextInt(4);
    }
}