package example;
import cruise.util.FileTracer;

public class Tracer
{

  //------------------------
  // MEMBER VARIABLES
  //------------------------

  //Tracer State Machines
  public enum Status { On, Off }
  public enum StatusOn { Null, SemiOn, FullOn }
  private Status status;
  private StatusOn statusOn;

  //------------------------
  // CONSTRUCTOR
  //------------------------

  public Tracer()
  {
    setStatusOn(StatusOn.Null);
    setStatus(Status.On);
  }

  //------------------------
  // INTERFACE
  //------------------------

  public String getStatusFullName()
  {
    String answer = status.toString();
    if (statusOn != StatusOn.Null) { answer += "." + statusOn.toString(); }
    return answer;
  }

  public Status getStatus()
  {
    return status;
  }

  public StatusOn getStatusOn()
  {
    return statusOn;
  }

  public boolean flip()
  {
    boolean wasEventProcessed = false;
    
    Status aStatus = status;
    switch (aStatus)
    {
      case On:
        exitStatus();
    FileTracer.handle( System.currentTimeMillis()+","+Thread.currentThread().getId()+",TraceState.ump,18,Tracer,"+System.identityHashCode(this)+",sm_t,On,flip,Off" );
        setStatus(Status.Off);
        wasEventProcessed = true;
        break;
      case Off:
    FileTracer.handle( System.currentTimeMillis()+","+Thread.currentThread().getId()+",TraceState.ump,18,Tracer,"+System.identityHashCode(this)+",sm_t,Off,flip,On" );
        setStatus(Status.On);
        wasEventProcessed = true;
        break;
      default:
        // Other states do respond to this event
    }

    return wasEventProcessed;
  }

  private boolean enterOn()
  {
    boolean wasEventProcessed = false;
    
    StatusOn aStatusOn = statusOn;
    switch (aStatusOn)
    {
      case Null:
        setStatusOn(StatusOn.SemiOn);
        wasEventProcessed = true;
        break;
      default:
        // Other states do respond to this event
    }

    return wasEventProcessed;
  }

  private boolean exitOn()
  {
    boolean wasEventProcessed = false;
    
    StatusOn aStatusOn = statusOn;
    switch (aStatusOn)
    {
      case SemiOn:
        setStatusOn(StatusOn.Null);
        wasEventProcessed = true;
        break;
      case FullOn:
        setStatusOn(StatusOn.Null);
        wasEventProcessed = true;
        break;
      default:
        // Other states do respond to this event
    }

    return wasEventProcessed;
  }

  private void exitStatus()
  {
    switch(status)
    {
      case On:
        exitOn();
        break;
    }
  }

  private void setStatus(Status aStatus)
  {
    status = aStatus;

    // entry actions and do activities
    switch(status)
    {
      case On:
        if (statusOn == StatusOn.Null) { setStatusOn(StatusOn.SemiOn); }
        break;
    }
  }

  private void setStatusOn(StatusOn aStatusOn)
  {
    statusOn = aStatusOn;
    if (status != Status.On && aStatusOn != StatusOn.Null) { setStatus(Status.On); }
  }

  public void delete()
  {}

}
