TelegramBots/telegrambots-abilities/src/main/java/org/telegram/abilitybots/api/sender/SilentSender.java

package org.telegram.abilitybots.api.sender;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.telegram.telegrambots.meta.api.methods.BotApiMethod;
import org.telegram.telegrambots.meta.api.methods.send.SendMessage;
import org.telegram.telegrambots.meta.api.objects.Message;
import org.telegram.telegrambots.meta.api.objects.replykeyboard.ForceReplyKeyboard;
import org.telegram.telegrambots.meta.exceptions.TelegramApiException;
import org.telegram.telegrambots.meta.updateshandlers.SentCallback;

import java.io.Serializable;
import java.util.Optional;


/**
 * A silent sender that returns {@link Optional} objects upon execution. Mainly used to decrease verboseness of exception handling.
 *
 * @author Abbas Abou Daya
 */
public class SilentSender {
  private static final Logger log = LoggerFactory.getLogger(SilentSender.class);

  private final MessageSender sender;

  public SilentSender(MessageSender sender) {
    this.sender = sender;
  }

  public Optional<Message> send(String message, long id) {
    return doSendMessage(message, id, false);
  }

  public Optional<Message> sendMd(String message, long id) {
    return doSendMessage(message, id, true);
  }

  public Optional<Message> forceReply(String message, long id) {
    SendMessage msg = new SendMessage();
    msg.setText(message);
    msg.setChatId(Long.toString(id));
    msg.setReplyMarkup(new ForceReplyKeyboard());

    return execute(msg);
  }

  public <T extends Serializable, Method extends BotApiMethod<T>> Optional<T> execute(Method method) {
    try {
      return Optional.ofNullable(sender.execute(method));
    } catch (TelegramApiException e) {
      log.error("Could not execute bot API method", e);
      return Optional.empty();
    }
  }

  public <T extends Serializable, Method extends BotApiMethod<T>, Callback extends SentCallback<T>> void
  executeAsync(Method method, Callback callable) {
    try {
      sender.executeAsync(method, callable);
    } catch (TelegramApiException e) {
      log.error("Could not execute bot API method", e);
    }
  }

  private Optional<Message> doSendMessage(String txt, long groupId, boolean format) {
    SendMessage smsg = new SendMessage();
    smsg.setChatId(Long.toString(groupId));
    smsg.setText(txt);
    smsg.enableMarkdown(format);

    return execute(smsg);
  }
}