/*
    * Copyright 2011 The Kuali Foundation.
    * 
    * Licensed under the Educational Community License, Version 2.0 (the "License");
    * you may not use this file except in compliance with the License.
    * You may obtain a copy of the License at
    * 
    * http://www.opensource.org/licenses/ecl2.php
    * 
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.kuali.ole.utility;
  
  import java.text.DecimalFormat;
  import java.util.Calendar;
  import java.util.Date;
  
  public class DateTimeUtil {
  
      public static String formatTime(long endTime, long startTime) {
          long milliseconds = endTime - startTime;
          return formatTime(milliseconds);
      }
  
      public static String formatTime(long timeInMillisec) {
          long hours;
          long minutes;
          long seconds;
          long milliseconds = timeInMillisec;
          double secAndMilliSec = (double) timeInMillisec / 1000;
          double milliSec = secAndMilliSec - (long) secAndMilliSec;
          DecimalFormat df = new DecimalFormat("#.###");
          seconds = (milliseconds / 1000);
          // milliseconds = milliseconds - seconds * 1000;
          minutes = seconds / 60;
          seconds = seconds - minutes * 60;
          hours = minutes / 60;
          minutes = minutes - hours * 60;
          secAndMilliSec = (double) seconds + Double.valueOf(df.format(milliSec));
          String timeTaken = hours + ":" + minutes + ":" + Double.valueOf(df.format(secAndMilliSec));
          return timeTaken;
      }
  
      public static Date formatDate(Date date){
          Calendar calendar = Calendar.getInstance();
          calendar.setTime(date);
          return calendar.getTime();
      }
  
      public static Date formateDateWithStartTimeOfTheDay(Date date){
          Calendar calendar = Calendar.getInstance();
          calendar.setTime(date);
          calendar.set(Calendar.HOUR_OF_DAY, 00);
          calendar.set(Calendar.MINUTE, 01);
          calendar.set(Calendar.SECOND, 01);
          calendar.set(Calendar.MILLISECOND, 01);
          Date formatedDate = DateTimeUtil.formatDate(calendar.getTime());
          return formatedDate;
      }
  
      public static Date formateDateWithEndTimeOfTheDay(Date date){
          Calendar calendar = Calendar.getInstance();
          calendar.setTime(date);
          calendar.set(Calendar.HOUR_OF_DAY, 23);
          calendar.set(Calendar.MINUTE, 59);
          calendar.set(Calendar.SECOND, 59);
          calendar.set(Calendar.MILLISECOND, 59);
          Date formatedDate = DateTimeUtil.formatDate(calendar.getTime());
          return formatedDate;
      }
  
  
      
  }