/**
    * 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.tklm.leave.payout;
  
  import java.math.BigDecimal;
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.kpme.core.accrualcategory.AccrualCategory;
  import org.kuali.kpme.core.api.assignment.Assignable;
  import org.kuali.kpme.core.assignment.Assignment;
  import org.kuali.kpme.core.bo.HrBusinessObject;
  import org.kuali.kpme.core.earncode.EarnCode;
  import org.kuali.kpme.core.principal.PrincipalHRAttributes;
  import org.kuali.kpme.core.service.HrServiceLocator;
  import org.kuali.kpme.tklm.api.leave.payout.LeavePayoutContract;
  import org.kuali.kpme.tklm.leave.block.LeaveBlock;
  import org.kuali.kpme.tklm.leave.service.LmServiceLocator;
  import org.kuali.rice.kim.api.identity.Person;
  import org.kuali.rice.kim.api.services.KimApiServiceLocator;
  
  public class LeavePayout extends HrBusinessObject implements Assignable, LeavePayoutContract {
  
  	private static final long serialVersionUID = 1L;
  
  	private String lmLeavePayoutId;
  	private String principalId;
  	private String documentHeaderId;
  	private String fromAccrualCategory;
  	private String earnCode;
  	private String description;
  	private BigDecimal payoutAmount = new BigDecimal("0.0");
      private BigDecimal forfeitedAmount = new BigDecimal("0.0");
  	private transient Person principal;
  	private transient AccrualCategory fromAccrualCategoryObj;
  	private transient EarnCode earnCodeObj;
  	private transient PrincipalHRAttributes principalHRAttrObj;
      private String leaveCalendarDocumentId;
      private String accrualCategoryRule;
      private String forfeitedLeaveBlockId;
      private String payoutFromLeaveBlockId;
      private String payoutLeaveBlockId;
  
  	private String status;
  
  	public String getEarnCode() {
  		return earnCode;
  	}
  	public void setEarnCode(String earnCode) {
  		this.earnCode = earnCode;
  	}
  	public EarnCode getEarnCodeObj() {
  		if (earnCodeObj == null) {
              earnCodeObj = HrServiceLocator.getEarnCodeService().getEarnCode(this.earnCode, getEffectiveLocalDate());
          }
          return earnCodeObj;
  	}
  	public void setEarnCodeObj(EarnCode earnCodeObj) {
  		this.earnCodeObj = earnCodeObj;
  	}
  	public String getPrincipalId() {
  		return principalId;
  	}
  	public void setPrincipalId(String principalId) {
  		this.principalId = principalId;
  	}
      public Person getPrincipal() {
          return principal;
      }
      public void setPrincipal(Person principal) {
          this.principal = principal;
      }
  	public String getName() {
  		if (principal == null) {
          principal = KimApiServiceLocator.getPersonService().getPerson(this.principalId);
  		}
  		return (principal != null) ? principal.getName() : "";
  	}
  	
  	public String getLeavePlan() {
  		if (!StringUtils.isEmpty(this.principalId)) {
  			principalHRAttrObj = HrServiceLocator.getPrincipalHRAttributeService().getPrincipalCalendar(principalId, this.getEffectiveLocalDate());
  		}
  		return (principalHRAttrObj != null) ? principalHRAttrObj.getLeavePlan() : "";
  	}
 
 	public void setLeavePlan(String leavePlan) {
 	}
 	public String getFromAccrualCategory() {
 		return fromAccrualCategory;
 	}
 	public void setFromAccrualCategory(String accrualCategory) {
 		this.fromAccrualCategory = accrualCategory;
 	}
 	
 	public String getDescription() {
 		return description;
 	}
 	public void setDescription(String description) {
 		this.description = description;
 	}
 	public BigDecimal getPayoutAmount() {
 		return payoutAmount;
 	}
 	public void setPayoutAmount(BigDecimal amount) {
 		this.payoutAmount = amount;
 	}
     public BigDecimal getForfeitedAmount() {
         return forfeitedAmount;
     }
     public void setForfeitedAmount(BigDecimal amount) {
         this.forfeitedAmount = amount;
     }
 	public AccrualCategory getFromAccrualCategoryObj() {
         if (fromAccrualCategoryObj == null) {
             fromAccrualCategoryObj =  HrServiceLocator.getAccrualCategoryService().getAccrualCategory(fromAccrualCategory, getEffectiveLocalDate());
         }
         return fromAccrualCategoryObj;
 	}
 	public void setFromAccrualCategoryObj(AccrualCategory accrualCategoryObj) {
 		this.fromAccrualCategoryObj = accrualCategoryObj;
 	}
 	public static long getSerialversionuid() {
 		return serialVersionUID;
 	}
 	public String getLmLeavePayoutId() {
 		return lmLeavePayoutId;
 	}
 	public void setLmLeavePayoutId(String id) {
 		this.lmLeavePayoutId = id;
 	}
 	
 	@Override
 	protected String getUniqueKey() {
 		return getLmLeavePayoutId();
 	}
 	
 	@Override
 	public String getId() {
 		return getLmLeavePayoutId();
 	}
 
 	@Override
 	public void setId(String id) {
 		setLmLeavePayoutId(id);
 	}
 
 	public PrincipalHRAttributes getPrincipalHRAttrObj() {
 		return principalHRAttrObj;
 	}
 	public void setPrincipalHRAttrObj(PrincipalHRAttributes hrObj) {
 		this.principalHRAttrObj = hrObj;
 	}
 	public String getAccrualCategoryRule() {
 		return accrualCategoryRule;
 	}
 	public void setAccrualCategoryRule(String accrualCategoryRule) {
 		this.accrualCategoryRule = accrualCategoryRule;
 	}
 	public String getForfeitedLeaveBlockId() {
 		return forfeitedLeaveBlockId;
 	}
 	public void setForfeitedLeaveBlockId(String forfeitedLeaveBlockId) {
 		this.forfeitedLeaveBlockId = forfeitedLeaveBlockId;
 	}
 	public String getPayoutLeaveBlockId() {
 		return payoutLeaveBlockId;
 	}
 	public void setPayoutLeaveBlockId(String payoutLeaveBlockId) {
 		this.payoutLeaveBlockId = payoutLeaveBlockId;
 	}
 	public String getPayoutFromLeaveBlockId() {
 		return payoutFromLeaveBlockId;
 	}
 	public void setPayoutFromLeaveBlockId(String payoutFromLeaveBlockId) {
 		this.payoutFromLeaveBlockId = payoutFromLeaveBlockId;
 	}
 
 	public void setLeaveCalendarDocumentId(String leaveCalendarDocumentId) {
 		this.leaveCalendarDocumentId = leaveCalendarDocumentId;
 	}
 
     public List<LeaveBlock> getLeaveBlocks() {
         List<LeaveBlock> leaveBlocks = new ArrayList<LeaveBlock>();
 
 		if (getForfeitedLeaveBlockId() != null) {
 		    leaveBlocks.add(LmServiceLocator.getLeaveBlockService().getLeaveBlock(forfeitedLeaveBlockId));
         }
         if (getPayoutFromLeaveBlockId() != null) {
 		    leaveBlocks.add(LmServiceLocator.getLeaveBlockService().getLeaveBlock(payoutFromLeaveBlockId));
         }
         if (getPayoutLeaveBlockId() != null) {
 		    leaveBlocks.add(LmServiceLocator.getLeaveBlockService().getLeaveBlock(payoutLeaveBlockId));
         }
         return leaveBlocks;
     }
 
     public String getLeaveCalendarDocumentId() {
         return leaveCalendarDocumentId;
     }
 	public LeavePayout adjust(BigDecimal payoutAmount) {
 		BigDecimal difference = this.payoutAmount.subtract(payoutAmount);
 		//technically if there is forfeiture, then the transfer amount has already been maximized
 		//via BalanceTransferService::initializeTransfer(...)
 		//i.o.w. transfer amount cannot be increased.
 		//this method is written with the intention of eventually allowing end user to adjust the transfer
 		//amount as many times as they wish before submitting. Currently they cannot.
 		if(difference.signum() < 0) {
 			//transfer amount is being increased.
 			if(forfeitedAmount.compareTo(BigDecimal.ZERO) > 0) {
 				//transfer amount has already been maximized.
 				if(forfeitedAmount.compareTo(difference.abs()) >= 0)
 					// there is enough leave in the forfeited amount to take out the difference.
 					forfeitedAmount = forfeitedAmount.subtract(difference.abs());
 				else
 					// the difference zero's the forfeited amount.
 					forfeitedAmount = BigDecimal.ZERO;
 			}
 			// a forfeited amount equal to zero with an increase in the transfer amount
 			// does not produce forfeiture.
 			// forfeiture cannot be negative.
 		}
 		else if (difference.signum() > 0) {
 			//transfer amount is being decreased
 			forfeitedAmount = forfeitedAmount.add(difference);
 		}
 
 		this.payoutAmount = payoutAmount;
 		
 		return this;
 	}
 	
 	public String getStatus() {
 		return status;
 	}
 	
 	public void setStatus(String code) {
 		status = code;
 	}
 	public String getDocumentHeaderId() {
 		return documentHeaderId;
 	}
 	public void setDocumentHeaderId(String documentHeaderId) {
 		this.documentHeaderId = documentHeaderId;
 	}
 
     @Override
     public List<Assignment> getAssignments() {
         return HrServiceLocator.getAssignmentService().getAssignments(getPrincipalId(), getEffectiveLocalDate());
     }
 }