/*
 * COPYRIGHT 2004 Petri Airio
 *
 * All rights reserved.
 *
 * $Id: Uptime.java,v 1.4 2004/09/27 19:41:59 pete Exp $
 */
package com.freakz.hokan.common;

import java.util.Calendar;
import java.util.Date;

/**
 * Calculates time difference between two time objects.
 * This time is usually nor often called uptime.
 * <p/>
 * $Revision: 1.4 $
 *
 * @author Petri Airio
 */

public class Uptime {

//~ Instance/static variables ..............................................

  private long _time;


//~ Constructors ...........................................................

  public Uptime() {
    _time = new Date().getTime();
  }

  public Uptime(Calendar cal) {
    this(cal.getTime());
  }

  public Uptime(Date d) {
    this(d.getTime());
  }

  /**
   * startup time. uptime is calculated against this time.
   */
  public Uptime(long time) {
    _time = time;
    //    System.out.println("Target time: " + new Date(time) +
    //       " (" + _time + ")");
  }

  //~ Methods ................................................................

  public Long[] getTimeDiff() {
    return getTimeDiff(new Date().getTime());
  }

  public Long[] getTimeDiff(Calendar cal) {
    return getTimeDiff(cal.getTime());
  }

  public Long[] getTimeDiff(Date d) {
    return getTimeDiff(d.getTime());
  }

  /**
   *
   */
  public Long[] getTimeDiff(long time2) {
    long utime = Math.abs(_time - time2);
    System.out.println("--> " + time2 + " --> " + utime);
    if (utime == 0) {
      return new Long[]{new Long(0), new Long(0), new Long(0), new Long(0)};
    }

    long ut_secs = utime / 1000;

    long dd = ut_secs / (60 * 60 * 24);
    long hh = (ut_secs / (60 * 60)) - (dd * 24);
    long mm = (ut_secs / 60) - (dd * 1440) - (hh * 60);
    long ss = ut_secs - (dd * 24 * 60 * 60) - (hh * 60 * 60) - (mm * 60);

    Long[] ret = new Long[4];
    ret[0] = new Long(ss);
    ret[1] = new Long(mm);
    ret[2] = new Long(hh);
    ret[3] = new Long(dd);

    return ret;
  }

}