/**
    * 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.earncode.validation;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.hr.lm.accrual.AccrualCategory;
  import org.kuali.hr.time.earncode.EarnCode;
  import org.kuali.hr.time.service.base.TkServiceLocator;
  import org.kuali.hr.time.timeblock.TimeBlock;
  import org.kuali.hr.time.util.TkConstants;
  import org.kuali.hr.time.util.ValidationUtils;
  import org.kuali.rice.kns.document.MaintenanceDocument;
  import org.kuali.rice.kns.maintenance.rules.MaintenanceDocumentRuleBase;
  
  import java.math.BigDecimal;
  import java.sql.Date;
  import java.util.List;
  
  public class EarnCodeValidation extends MaintenanceDocumentRuleBase{
  	
  	boolean validateRollupToEarnCode(String earnCode, Date asOfDate) {
  		boolean valid = true;
  		if (!StringUtils.isEmpty(earnCode) && !ValidationUtils.validateEarnCode(earnCode, asOfDate)) {
  			this.putFieldError("rollupToEarnCode", "earncode.rollupToEarnCode.notfound", "Roll up to Earn code "
  					+ earnCode + "'");
  			valid = false;
  		}
  		return valid;
  	}
  	
  	boolean validateDefaultAmountOfTime(Long defaultAmountofTime) {
  		boolean valid = true;
  		if ( defaultAmountofTime != null ){
  			if (defaultAmountofTime.compareTo(24L) > 0  || defaultAmountofTime.compareTo(0L) < 0) {
  				this.putFieldError("defaultAmountofTime", "error.leaveCode.hours", "Default Amount of Time '"
  						+ defaultAmountofTime + "'");
  				valid = false;
  			}
  		}
  		return valid;
  	}
  	
  	boolean validateRecordMethod(String recordMethod, String accrualCategory, Date asOfDate){
  		boolean valid = true;
  		if(recordMethod != null) {
  			if(StringUtils.isNotEmpty(accrualCategory)) {
  				valid = ValidationUtils.validateRecordMethod(recordMethod, accrualCategory, asOfDate);
  				if(!valid) {
  					this.putFieldError("recordMethod", "earncode.recordMethod.invalid", "Record Method");
  				}
  			}
  		}
  		return valid;
  	}
  	
  	boolean validateLeavePlan(EarnCode earnCode) {
  		
  		boolean valid = true;
  		
  		if (StringUtils.isNotBlank(earnCode.getLeavePlan())) {
  
  			if (!ValidationUtils.validateLeavePlan(earnCode.getLeavePlan(), earnCode.getEffectiveDate())) {
  				this.putFieldError("leavePlan", "error.existence", "leavePlan '"
  						+ earnCode.getLeavePlan() + "'");
  				valid = false;
  				return valid;
  			}
  			
  			if (earnCode.getEffectiveDate() != null && StringUtils.isNotBlank(earnCode.getAccrualCategory())) {
  				AccrualCategory myTestAccrualCategoryObj =  TkServiceLocator.getAccrualCategoryService().getAccrualCategory(earnCode.getAccrualCategory(), earnCode.getEffectiveDate());
  				if(myTestAccrualCategoryObj != null) {
  					if (!myTestAccrualCategoryObj.getLeavePlan().equals(earnCode.getLeavePlan())) {
  						this.putFieldError("leavePlan", "error.leaveCode.leavePlanMismatch", myTestAccrualCategoryObj.getLeavePlan());
  						valid = false;
  						return valid;
  					}
  					earnCode.setLeavePlan(myTestAccrualCategoryObj.getLeavePlan());
  				} 
  			}
  		}
  		return valid;
  	}
  	
  	@Override
  	protected boolean processCustomRouteDocumentBusinessRules(MaintenanceDocument document) {
  		EarnCode earnCode = (EarnCode)this.getNewBo();
 		EarnCode oldEarnCode = (EarnCode)this.getOldBo();
 		if ((StringUtils.equals(oldEarnCode.getEarnCode(), TkConstants.LUNCH_EARN_CODE) 
 				|| StringUtils.equals(oldEarnCode.getEarnCode(), TkConstants.HOLIDAY_EARN_CODE))
 					&& !earnCode.isActive()) {
 			this.putFieldError("active", "earncode.inactivate.locked", earnCode
 					.getEarnCode());
 		}
 		//if earn code is not designated how to record then throw error
 		if (earnCode.getHrEarnCodeId() == null) {
 			if (ValidationUtils.validateEarnCode(earnCode.getEarnCode(), null)) {
 				// If there IS an earn code, ie, it is valid, we need to report
 				// an error as earn codes must be unique.			
 				this.putFieldError("earnCode", "earncode.earncode.unique");
 				return false;
 			}
 		}
 		
 		 //check if the effective date of the leave plan is prior to effective date of the earn code 
 		 //accrual category is an optional field
 		if(StringUtils.isNotEmpty(earnCode.getLeavePlan())){
 			boolean valid = validateLeavePlan(earnCode);
 			if(!valid) {
 				return false;
 			}
 		}
 		//check if the effective date of the accrual category is prior to effective date of the earn code 
 		//accrual category is an optional field
 		if(StringUtils.isNotEmpty(earnCode.getAccrualCategory())){
 			if (!ValidationUtils.validateAccrualCategory(earnCode.getAccrualCategory(), earnCode.getEffectiveDate())) {
 				this.putFieldError("accrualCategory", "earncode.accrualCategory.invalid", new String[]{earnCode.getAccrualCategory(),earnCode.getLeavePlan()});
 				return false;
 			}
 		}
 		
 		// check if there's a newer version of the Earn Code
 		int count = TkServiceLocator.getEarnCodeService().getNewerEarnCodeCount(earnCode.getEarnCode(), earnCode.getEffectiveDate());
 		if(count > 0) {
 			this.putFieldError("effectiveDate", "earncode.effectiveDate.newer.exists");
 			return false;
 		}
 		
 		// kpme-937 can not deactivate an earn code if it used in active timeblocks
 		List<TimeBlock> latestEndTimestampTimeBlocks =  TkServiceLocator.getTimeBlockService().getLatestEndTimestampForEarnCode(earnCode.getEarnCode());
 		if ( !earnCode.isActive() && !latestEndTimestampTimeBlocks.isEmpty() && earnCode.getEffectiveDate().before(latestEndTimestampTimeBlocks.get(0).getEndDate()) ){
 			this.putFieldError("earnCode", "earncode.earncode.inactivate", earnCode.getEarnCode());
 			return false;
 		}
 		
 		if(!(this.validateDefaultAmountOfTime(earnCode.getDefaultAmountofTime()))) {
 			return false;
 		}
 		
 		if(earnCode.getRollupToEarnCode() != null && !StringUtils.isEmpty(earnCode.getRollupToEarnCode())) {
 			if(!(this.validateRollupToEarnCode(earnCode.getRollupToEarnCode(), earnCode.getEffectiveDate()))) {
 				return false;
 			}
 		}
 		
 		if(!validateRecordMethod(earnCode.getRecordMethod(), earnCode.getAccrualCategory(), earnCode.getEffectiveDate())) {
 			return false;
 		}
 		
 		return true;
 	}
 
 }