/**
    * Copyright 2004-2012 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.clock.location.service;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.hr.time.clock.location.ClockLocationRule;
  import org.kuali.hr.time.clock.location.ClockLocationRuleIpAddress;
  import org.kuali.hr.time.clock.location.dao.ClockLocationDao;
  import org.kuali.hr.time.clocklog.ClockLog;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  import java.sql.Date;
  import java.util.List;
  
  public class ClockLocationRuleServiceImpl implements ClockLocationRuleService {
  	private ClockLocationDao clockLocationDao;
  
  	public ClockLocationDao getClockLocationDao() {
  		return clockLocationDao;
  	}
  
  	public void setClockLocationDao(ClockLocationDao clockLocationDao) {
  		this.clockLocationDao = clockLocationDao;
  	}
  
  	public void processClockLocationRule(ClockLog clockLog, Date asOfDate){
  		List<ClockLocationRule> lstClockLocationRules = getClockLocationRule(clockLog.getJob().getDept(),
  										clockLog.getWorkArea(), clockLog.getPrincipalId(), clockLog.getJobNumber(), asOfDate);
  		if(lstClockLocationRules.isEmpty()){
  			return;
  		}
  		for(ClockLocationRule clockLocationRule : lstClockLocationRules){
  			List<ClockLocationRuleIpAddress> ruleIpAddresses = clockLocationRule.getIpAddresses();
  			String ipAddressClock = clockLog.getIpAddress();
  			for(ClockLocationRuleIpAddress ruleIp : ruleIpAddresses) {
  				if(compareIpAddresses(ruleIp.getIpAddress(), ipAddressClock)){
  					return;
  				}
  			}
  		}
  		GlobalVariables.getMessageMap().putWarning("property", "ipaddress.invalid.format", clockLog.getIpAddress());
  
  	}
  
  	private boolean compareIpAddresses(String ipAddressRule, String ipAddress){
  		String[] rulePieces = StringUtils.split(ipAddressRule, ".");
          int ruleMax = rulePieces.length-1;
  
  		String[] ipAddPieces = StringUtils.split(ipAddress,".");
  		boolean match = true;
  		for(int i=0; i<ipAddPieces.length; i++){
  			if( ((i > ruleMax) && StringUtils.equals("%", rulePieces[ruleMax])) ||
                    ((i <= ruleMax) && ( StringUtils.equals(ipAddPieces[i], rulePieces[i]) || StringUtils.equals("%", rulePieces[i]) ))
                  )
              {
  				// we don't need to do anything.
  			} else {
  			    return false;
  			}
  		}
  		return match;
  	}
  
  	@Override
  	public List<ClockLocationRule> getClockLocationRule(String dept, Long workArea,String principalId, Long jobNumber, Date asOfDate) {
  
          // 1 : dept, wa, principal, job
  		List<ClockLocationRule> clockLocationRule = clockLocationDao.getClockLocationRule(dept, workArea,principalId,jobNumber,asOfDate);
  		if(!clockLocationRule.isEmpty()){
  			return clockLocationRule;
  		}
  
          // 2 : dept, wa, principal, -1
  		clockLocationRule = clockLocationDao.getClockLocationRule(dept, workArea, principalId, -1L, asOfDate);
  		if(!clockLocationRule.isEmpty()){
  			return clockLocationRule;
  		}
  
          // 3 : dept, wa, %        , job
          clockLocationRule = clockLocationDao.getClockLocationRule(dept, workArea, "%", jobNumber, asOfDate);
          if(!clockLocationRule.isEmpty()){
              return clockLocationRule;
          }
  
          // 4 : dept, -1, principal, job
          clockLocationRule = clockLocationDao.getClockLocationRule(dept, -1L, principalId, jobNumber, asOfDate);
         if(!clockLocationRule.isEmpty()){
             return clockLocationRule;
         }
 
         // 5 : dept, wa, %        , -1
 		clockLocationRule = clockLocationDao.getClockLocationRule(dept, workArea, "%", -1L, asOfDate);
 		if(!clockLocationRule.isEmpty()){
 			return clockLocationRule;
 		}
 
         // 6 : dept, -1, principal, -1
         clockLocationRule = clockLocationDao.getClockLocationRule(dept, -1L, principalId, -1L, asOfDate);
         if(!clockLocationRule.isEmpty()){
             return clockLocationRule;
         }
 
         // 7 : dept, -1, %        , job
         clockLocationRule = clockLocationDao.getClockLocationRule(dept, -1L, "%", jobNumber, asOfDate);
         if(!clockLocationRule.isEmpty()){
             return clockLocationRule;
         }
 
         // 8 : dept, -1, %        , job
 		clockLocationRule = clockLocationDao.getClockLocationRule(dept, -1L, "%", -1L, asOfDate);
 		return clockLocationRule;
 	}
 
 	@Override
 	public List<ClockLocationRule> getNewerVersionClockLocationRule(
 			String dept, Long workArea, String principalId, Long jobNumber,
 			Date asOfDate) {
 		 
 		return clockLocationDao.getNewerVersionClockLocationRule(dept, workArea, principalId, jobNumber, asOfDate);
 	}
 
 	@Override
 	public ClockLocationRule getClockLocationRule(String tkClockLocationRuleId) {
 		return clockLocationDao.getClockLocationRule(tkClockLocationRuleId);
 	}
 	
 	public void populateIPAddressesForCLR(ClockLocationRule clr){
 		clockLocationDao.populateIPAddressesForCLR(clr);
 	}
 
 }