#include <iostream>

#include "Behaviors/StateMachine.h"
#include "Shared/string_util.h"

$nodeclass RemoteButtonEvent : StateNode {

  $nodeclass DisplayInstructions : StateNode : doStart {
    sndman->speak("Message the I-P address of the remote robot");
    std::cout << "Type 'msg <ip-address>'" << std::endl;
  }

  $nodeclass SetupListener : StateNode {
    virtual void doStart() {
      const TextMsgEvent &textev = dynamic_cast<const TextMsgEvent&>(*event);
      unsigned int x;
      int const result = sscanf(textev.getText().c_str(), "%u.%u.%u.%u", &x, &x, &x, &x);
      if ( result != 4 ) {
	std::cout << "Invalid IP address" << std::endl;
	postStateFailure();
	return;
      }
      int ip = string_util::stringToIntIP(textev.getText());
      erouter->addRemoteListener(this, ip, EventBase::buttonEGID);
      sndman->speak("Listening for remote events");
    }

    // Whenever we receive a remote button press event, generate a local userEGID event.
    virtual void doEvent() {
      std::cout << "Remote event: " << event->getDescription() << std::endl;
      erouter->postEvent(EventBase(EventBase::userEGID, event->getSourceID(), EventBase::activateETID));
    }
  }

  virtual void setup() {
    $statemachine{

      startnode: StateNode =N=> {getIpForListener, listenLoop}

      // Display instructions, wait for IP address, and set up remote event listener.
      // Repeat the instructions if the IP address was invalid.
      getIpForListener: DisplayInstructions =TM=> SetupListener =F=> getIpForListener;

      // Remote button press events are being reposted as userEGID events.
      // When we get one, play a ping sound and go back to waiting for the next one.
      listenLoop: StateNode =E(userEGID)=> SoundNode($,"ping.wav") =N=> listenLoop
    }
  }

}

REGISTER_BEHAVIOR_MENU(RemoteButtonEvent,DEFAULT_TK_MENU"/Interaction Demos");