/**
    * Copyright 2004-2013 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.hr.time.batch;
  
  import java.sql.Date;
  import java.text.ParseException;
  import java.text.SimpleDateFormat;
  import java.util.List;
  
  import org.joda.time.DateTime;
  import org.kuali.hr.lm.leaveplan.LeavePlan;
  import org.kuali.hr.time.batch.service.BatchJobService;
  import org.kuali.hr.time.service.base.TkServiceLocator;
  import org.kuali.hr.time.util.TKUtils;
  import org.quartz.JobExecutionContext;
  import org.quartz.JobExecutionException;
  import org.quartz.SchedulerException;
  import org.springframework.scheduling.quartz.QuartzJobBean;
  
  public class CarryOverSchedulerJob extends QuartzJobBean {
  
  	private static int LEAVE_PLAN_POLLING_WINDOW;
  	
  	private static BatchJobService batchJobService;
  
  	@Override
  	protected void executeInternal(JobExecutionContext context) throws JobExecutionException {
  		Date asOfDate = TKUtils.getCurrentDate();
  		List<LeavePlan> leavePlans = TkServiceLocator.getLeavePlanService().getLeavePlansNeedsCarryOverScheduled(getLeavePlanPollingWindow(), asOfDate);
          try {
          	if(leavePlans!=null && !leavePlans.isEmpty()) {
  				DateTime current = new DateTime(asOfDate.getTime());
  		        DateTime windowStart = current.minusDays(getLeavePlanPollingWindow());
  		        DateTime windowEnd = current.plusDays(getLeavePlanPollingWindow());
  
          		// schedule batch job for all LeavePlans who fall in leave polling window.
          		for(LeavePlan leavePlan : leavePlans) {
          			if(leavePlan.getBatchPriorYearCarryOverStartDate() != null  && leavePlan.getBatchPriorYearCarryOverStartTime() != null ) {
          				java.util.Date batchDate = getBatchJobStartDateTime(leavePlan);
          				DateTime batchDateTime = new DateTime(batchDate.getTime());
          				if(batchDateTime.compareTo(windowStart) >= 0 && batchDateTime.compareTo(windowEnd) <= 0) {
          					getBatchJobService().scheduleLeaveCarryOverJobs(leavePlan);
          				}
          			}
          		}
          	}
          } catch (SchedulerException se) {
          	throw new JobExecutionException("Exception thrown during job scheduling of Carry over for Leave", se);
          }
  	}
  	
  	public int getLeavePlanPollingWindow() {
  		return LEAVE_PLAN_POLLING_WINDOW;
  	}
  
  	public void setLeavePlanPollingWindow(int leavePlanPollingWindow) {
  		LEAVE_PLAN_POLLING_WINDOW = leavePlanPollingWindow;
  	}
  
  	public static BatchJobService getBatchJobService() {
  		return CarryOverSchedulerJob.batchJobService;
  	}
  
  	public void setBatchJobService(BatchJobService batchJobService) {
  		CarryOverSchedulerJob.batchJobService = batchJobService;
  	}
  	
  	private java.util.Date getBatchJobStartDateTime(LeavePlan leavePlan) {
  		
  		String batchJobDate = leavePlan.getBatchPriorYearCarryOverStartDate();
  		
  		java.util.Calendar batchJobTimeCal = java.util.Calendar.getInstance();
  		batchJobTimeCal.setTimeInMillis(leavePlan.getBatchPriorYearCarryOverStartTime().getTime());
  		SimpleDateFormat sdf = new SimpleDateFormat("MM/dd");
  		sdf.setLenient(false);
  		
  		java.util.Date batchJobStart = null;
  		
  		try {
  			batchJobStart = sdf.parse(batchJobDate);
  		} catch (ParseException e) {
  		}
  		
  		java.util.Calendar batchJobStartDateTime = java.util.Calendar.getInstance();
  		batchJobStartDateTime.setTime(batchJobStart);
  		batchJobStartDateTime.set(java.util.Calendar.YEAR,java.util.Calendar.getInstance().get(java.util.Calendar.YEAR));
 		batchJobStartDateTime.set(java.util.Calendar.HOUR_OF_DAY,batchJobTimeCal.get(java.util.Calendar.HOUR_OF_DAY));
 		batchJobStartDateTime.set(java.util.Calendar.MINUTE,batchJobTimeCal.get(java.util.Calendar.MINUTE));
 		batchJobStartDateTime.set(java.util.Calendar.SECOND, 0);
 		batchJobStartDateTime.set(java.util.Calendar.MILLISECOND, 0);
 		
 		return batchJobStartDateTime.getTime();
 	}
 
 }