/**
    * Copyright 2004-2014 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.kpme.core.bo;
  
  import java.sql.Timestamp;
  import java.util.List;
  import java.util.Map;
  
  import org.joda.time.DateTime;
  import org.joda.time.LocalDate;
  import org.kuali.kpme.core.cache.CacheUtils;
  import org.kuali.kpme.core.util.TKUtils;
  import org.kuali.rice.kns.document.MaintenanceDocument;
  import org.kuali.rice.kns.maintenance.KualiMaintainableImpl;
  import org.kuali.rice.krad.service.KRADServiceLocator;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  public abstract class HrBusinessObjectMaintainableImpl extends KualiMaintainableImpl {
      protected static final org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(HrBusinessObjectMaintainableImpl.class);
  	/**
  	 * 
  	 */
  	private static final long serialVersionUID = 1L;
  
  	@Override
  	public void saveBusinessObject() {
  		HrBusinessObject hrObj = (HrBusinessObject) this.getBusinessObject();
  		if(hrObj.getId()!=null){
  			HrBusinessObject oldHrObj = this.getObjectById(hrObj.getId());
  			if(oldHrObj!= null){
  				//if the effective dates are the same do not create a new row just inactivate the old one
  				if(hrObj.getEffectiveDate().equals(oldHrObj.getEffectiveDate())){
  					oldHrObj.setActive(false);
  					oldHrObj.setTimestamp(TKUtils.subtractOneSecondFromTimestamp(new Timestamp(DateTime.now().getMillis())));
  				} else{
  					//if effective dates not the same add a new row that inactivates the old entry based on the new effective date
  					oldHrObj.setTimestamp(TKUtils.subtractOneSecondFromTimestamp(new Timestamp(DateTime.now().getMillis())));
  					oldHrObj.setEffectiveDate(hrObj.getEffectiveDate());
  					oldHrObj.setActive(false);
  					oldHrObj.setId(null);
                      customInactiveSaveLogicNewEffective(oldHrObj);
  				}
  				KRADServiceLocator.getBusinessObjectService().save(oldHrObj);
  			}
  		}
  		hrObj.setTimestamp(new Timestamp(System.currentTimeMillis()));
  
  		hrObj.setId(null);
  		
  		customSaveLogic(hrObj);
  		KRADServiceLocator.getBusinessObjectService().save(hrObj);
  
          //cache clearing?!?!
          try {
              List<String> cacheNames = (List<String>)hrObj.getClass().getDeclaredField("CACHE_FLUSH").get(hrObj);
              CacheUtils.flushCaches(cacheNames);
          } catch (NoSuchFieldException e) {
              try {
                  String cacheName = (String)hrObj.getClass().getDeclaredField("CACHE_NAME").get(hrObj);
                  CacheUtils.flushCache(cacheName);
              } catch (NoSuchFieldException | IllegalAccessException ex) {
                  // no cache name found
                  LOG.warn("No cache name found for object: " + hrObj.getClass().getName());
              }
              // no cache name found
              //LOG.warn("No cache name found for object: " + hrObj.getClass().getName());
          } catch (IllegalAccessException e) {
              LOG.warn("No caches found for object: " + hrObj.getClass().getName());
          }
      }
  	
  	public abstract HrBusinessObject getObjectById(String id);
  	public void customSaveLogic(HrBusinessObject hrObj){}
      public void customInactiveSaveLogicNewEffective(HrBusinessObject oldHrObj) {}
  
      @Override
      public void prepareForSave() {
      HrBusinessObject hrObj = (HrBusinessObject) this.getBusinessObject();
      hrObj.setUserPrincipalId(GlobalVariables.getUserSession().getPrincipalId());
      }
  }