package cz.cuni.amis.pogamut.sposh.engine.timer;
   
   import java.util.Calendar;
   
   /**
    * Timer what allows me to skip forward in time or suspend time for a while.
    * Very useful for tests or debugging.
    * @author Honza
    */
  public class DebugTimer implements ITimer {
      long subtract = 0;
  
      boolean suspended = false;
      long suspendedTime = 0;
  
      @Override
      public void init() {
      }
  
      @Override
      public void suspend() {
          suspendedTime = Calendar.getInstance().getTimeInMillis();
      }
  
      @Override
      public boolean isSuspended() {
          return suspended;
      }
  
      @Override
      public void resume() {
          if (suspended) {
              subtract += Calendar.getInstance().getTimeInMillis() - suspendedTime;
              suspendedTime = 0;
              suspended = false;
          }
      }
  
      public void addTime(long time2add) {
          subtract -= time2add;
      }
  
      @Override
      public long getTime() {
          if (suspended)
              return suspendedTime - subtract;
  
          return Calendar.getInstance().getTimeInMillis() - subtract;
      }
  
  }