package won.owner.service.impl;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import won.protocol.message.WonMessage;
import won.protocol.message.processor.WonMessageProcessor;
import won.protocol.message.sender.WonMessageSender;

/**
 * Service that connects client-side logic (e.g. the WonWebSocketHandler in won-owner-webapp)
 * with facilities for sending and receiving messages.
 */
public class OwnerApplicationService implements WonMessageProcessor, WonMessageSender
{

  private static final Logger logger = LoggerFactory.getLogger(OwnerApplicationService.class);

  @Autowired
  @Qualifier("default")
  private WonMessageSender wonMessageSenderDelegate;

  //when the callback is a bean in a child context, it sets itself as a dependency here
  //we don't do autowiring.
  private WonMessageProcessor messageProcessorDelegate =
    new NopOwnerApplicationServiceCallback();

  /**
   * Sends a message to the won node.
   * @param wonMessage
   */
  public void sendWonMessage(WonMessage wonMessage) {
    try {
      // send to node:
      wonMessageSenderDelegate.sendWonMessage(wonMessage);
    } catch (Exception e) {
      //TODO: send error message back to client!
      logger.info("could not send WonMessage", e);
    }
  }

  /**
   * Sends a message to the owner.
   * @param wonMessage
   */
  @Override
  public WonMessage process(final WonMessage wonMessage){
    return messageProcessorDelegate.process(wonMessage);
  }

  public void setMessageProcessorDelegate(final WonMessageProcessor messageProcessorDelegate) {
    this.messageProcessorDelegate = messageProcessorDelegate;
  }

}