/*
    * Copyright 2006 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.ole.module.purap.businessobject;
  
  import org.kuali.ole.module.purap.PurapConstants;
  import org.kuali.ole.module.purap.PurapPropertyConstants;
  import org.kuali.ole.module.purap.document.PaymentRequestDocument;
  import org.kuali.ole.module.purap.document.PurchaseOrderDocument;
  import org.kuali.ole.module.purap.document.service.AccountsPayableService;
  import org.kuali.ole.module.purap.document.service.PurapService;
  import org.kuali.ole.module.purap.exception.PurError;
  import org.kuali.ole.module.purap.util.ExpiredOrClosedAccountEntry;
  import org.kuali.ole.module.purap.util.PurApItemUtils;
  import org.kuali.ole.module.purap.util.PurApObjectUtils;
  import org.kuali.ole.select.businessobject.OleInvoiceItem;
  import org.kuali.ole.select.document.OlePaymentRequestDocument;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.rice.core.api.util.type.KualiDecimal;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  import java.math.BigDecimal;
  import java.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  
  /**
   * Payment Request Item Business Object.
   */
  public class PaymentRequestItem extends AccountsPayableItemBase {
      private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(PaymentRequestItem.class);
  
      protected BigDecimal purchaseOrderItemUnitPrice;
      private KualiDecimal itemOutstandingInvoiceQuantity;
      private KualiDecimal itemOutstandingInvoiceAmount;
  
      /**
       * Default constructor.
       */
      public PaymentRequestItem() {
  
      }
  
      /**
       * preq item constructor - Delegate
       *
       * @param poi  - purchase order item
       * @param preq - payment request document
       */
      public PaymentRequestItem(PurchaseOrderItem poi, PaymentRequestDocument preq) {
          this(poi, preq, new HashMap<String, ExpiredOrClosedAccountEntry>());
      }
  
      /**
       * Constructs a new payment request item, but also merges expired accounts.
       *
       * @param poi                        - purchase order item
       * @param preq                       - payment request document
       * @param expiredOrClosedAccountList - list of expired or closed accounts to merge
       */
      public PaymentRequestItem(PurchaseOrderItem poi, PaymentRequestDocument preq, HashMap<String, ExpiredOrClosedAccountEntry> expiredOrClosedAccountList) {
  
          // copy base attributes w/ extra array of fields not to be copied
          PurApObjectUtils.populateFromBaseClass(PurApItemBase.class, poi, this, PurapConstants.PREQ_ITEM_UNCOPYABLE_FIELDS);
  
          setItemDescription(poi.getItemDescription());
  
          //New Source Line should be set for PaymentRequestItem
          resetAccount();
  
          // set up accounts
          List accounts = new ArrayList();
          for (PurApAccountingLine account : poi.getSourceAccountingLines()) {
              PurchaseOrderAccount poa = (PurchaseOrderAccount) account;
  
              // check if this account is expired/closed and replace as needed
              SpringContext.getBean(AccountsPayableService.class).processExpiredOrClosedAccount(poa, expiredOrClosedAccountList);
  
              //KFSMI-4522 copy an accounting line with zero dollar amount if system parameter allows
              if (poa.getAmount().isZero()) {
                  if (SpringContext.getBean(AccountsPayableService.class).canCopyAccountingLinesWithZeroAmount()) {
                      accounts.add(new PaymentRequestAccount(this, poa));
                  }
              } else {
                  accounts.add(new PaymentRequestAccount(this, poa));
              }
         }
 
         this.setSourceAccountingLines(accounts);
         this.getUseTaxItems().clear();
         //List<PurApItemUseTax> newUseTaxItems = new ArrayList<PurApItemUseTax>();
         /// this.setUseTaxItems(newUseTaxItems);
         //copy use tax items over, and blank out keys (useTaxId and itemIdentifier)
         /*
         this.getUseTaxItems().clear();
         for (PurApItemUseTax useTaxItem : poi.getUseTaxItems()) {
             PaymentRequestItemUseTax newItemUseTax = new PaymentRequestItemUseTax(useTaxItem);
             this.getUseTaxItems().add(newItemUseTax);
 
         }
         */
 
         // clear amount and desc on below the line - we probably don't need that null
         // itemType check but it's there just in case remove if it causes problems
         // also do this if of type service
         if ((ObjectUtils.isNotNull(this.getItemType()) && this.getItemType().isAmountBasedGeneralLedgerIndicator())) {
             // setting unit price to be null to be more consistent with other below the line
             this.setItemUnitPrice(null);
         }
 
         // copy custom
         this.purchaseOrderItemUnitPrice = poi.getItemUnitPrice();
 //        this.purchaseOrderCommodityCode = poi.getPurchaseOrderCommodityCd();
 
         // set doc fields
         this.setPurapDocumentIdentifier(preq.getPurapDocumentIdentifier());
         this.setPurapDocument(preq);
     }
 
     /**
      * Retrieves a purchase order item by inspecting the item type to see if its above the line or below the line and returns the
      * appropriate type.
      *
      * @return - purchase order item
      */
     @Override
     public PurchaseOrderItem getPurchaseOrderItem() {
         if (ObjectUtils.isNotNull(this.getPurapDocumentIdentifier())) {
             if (ObjectUtils.isNull(this.getPaymentRequest())) {
                 this.refreshReferenceObject(PurapPropertyConstants.PURAP_DOC);
             }
         }
         // ideally we should do this a different way - maybe move it all into the service or save this info somehow (make sure and
         // update though)
         if (getPaymentRequest() != null) {
             PurchaseOrderDocument po = getPaymentRequest().getPurchaseOrderDocument();
             PurchaseOrderItem poi = null;
             if (this.getItemType().isLineItemIndicator()) {
                 List<PurchaseOrderItem> items = po.getItems();
                 poi = items.get(this.getItemLineNumber().intValue() - 1);
                 // throw error if line numbers don't match
                 // MSU Contribution DTT-3014 OLEMI-8483 OLECNTRB-974
                 /*
                  * List items = po.getItems(); if (items != null) { for (Object object : items) { PurchaseOrderItem item =
                  * (PurchaseOrderItem) object; if (item != null && item.getItemLineNumber().equals(this.getItemLineNumber())) { poi
                  * = item; break; } } }
                  */
             } else {
                 poi = (PurchaseOrderItem) SpringContext.getBean(PurapService.class).getBelowTheLineByType(po, this.getItemType());
             }
             if (poi != null) {
                 return poi;
             } else {
                 if (LOG.isDebugEnabled()) {
                     LOG.debug("getPurchaseOrderItem() Returning null because PurchaseOrderItem object for line number" + getItemLineNumber() + "or itemType " + getItemTypeCode() + " is null");
                 }
                 return null;
             }
         } else {
 
             LOG.error("getPurchaseOrderItem() Returning null because paymentRequest object is null");
             throw new PurError("Payment Request Object in Purchase Order item line number " + getItemLineNumber() + "or itemType " + getItemTypeCode() + " is null");
         }
     }
 
     public KualiDecimal getPoOutstandingAmount() {
         PurchaseOrderItem poi = getPurchaseOrderItem();
         if (ObjectUtils.isNull(this.getPurchaseOrderItemUnitPrice()) || KualiDecimal.ZERO.equals(this.getPurchaseOrderItemUnitPrice())) {
             return null;
         } else {
             return this.getPoOutstandingAmount(poi);
         }
     }
 
     private KualiDecimal getPoOutstandingAmount(PurchaseOrderItem poi) {
         if (poi == null) {
             return KualiDecimal.ZERO;
         } else {
             return poi.getItemOutstandingEncumberedAmount();
         }
     }
 
     public KualiDecimal getPoOriginalAmount() {
         PurchaseOrderItem poi = getPurchaseOrderItem();
         if (poi == null) {
             return null;
         } else {
             return poi.getExtendedPrice();
         }
     }
 
     /**
      * Exists due to a setter requirement by the htmlControlAttribute
      *
      * @param amount - po outstanding amount
      * @deprecated
      */
     @Deprecated
     public void setPoOutstandingAmount(KualiDecimal amount) {
         // do nothing
     }
 
 
     public KualiDecimal getPoOutstandingQuantity() {
         PurchaseOrderItem poi = getPurchaseOrderItem();
         if (poi == null) {
             return null;
         } else {
             if (PurapConstants.ItemTypeCodes.ITEM_TYPE_SERVICE_CODE.equals(this.getItemTypeCode())) {
                 return null;
             } else {
                 return poi.getOutstandingQuantity();
             }
         }
     }
 
     /**
      * Exists due to a setter requirement by the htmlControlAttribute
      *
      * @param qty - po outstanding quantity
      * @deprecated
      */
     @Deprecated
     public void setPoOutstandingQuantity(KualiDecimal qty) {
         // do nothing
     }
 
     public BigDecimal getPurchaseOrderItemUnitPrice() {
         return purchaseOrderItemUnitPrice;
     }
 
     public BigDecimal getOriginalAmountfromPO() {
         return purchaseOrderItemUnitPrice;
     }
 
     public void setOriginalAmountfromPO(BigDecimal purchaseOrderItemUnitPrice) {
         // Do nothing
     }
 
     public void setPurchaseOrderItemUnitPrice(BigDecimal purchaseOrderItemUnitPrice) {
         this.purchaseOrderItemUnitPrice = purchaseOrderItemUnitPrice;
     }
 
     public KualiDecimal getItemOutstandingInvoiceAmount() {
         return itemOutstandingInvoiceAmount;
     }
 
     public void setItemOutstandingInvoiceAmount(KualiDecimal itemOutstandingInvoiceAmount) {
         this.itemOutstandingInvoiceAmount = itemOutstandingInvoiceAmount;
     }
 
     public KualiDecimal getItemOutstandingInvoiceQuantity() {
         return itemOutstandingInvoiceQuantity;
     }
 
     public void setItemOutstandingInvoiceQuantity(KualiDecimal itemOutstandingInvoiceQuantity) {
         this.itemOutstandingInvoiceQuantity = itemOutstandingInvoiceQuantity;
     }
 
     public PaymentRequestDocument getPaymentRequest() {
         if (ObjectUtils.isNotNull(getPurapDocumentIdentifier())) {
             if (ObjectUtils.isNull(getPurapDocument())) {
                 this.refreshReferenceObject(PurapPropertyConstants.PURAP_DOC);
             }
         }
         return super.getPurapDocument();
     }
 
     public void setPaymentRequest(PaymentRequestDocument paymentRequest) {
         this.setPurapDocument(paymentRequest);
     }
 
     public void generateAccountListFromPoItemAccounts(List<PurApAccountingLine> accounts) {
         for (PurApAccountingLine line : accounts) {
             PurchaseOrderAccount poa = (PurchaseOrderAccount) line;
             if (!line.isEmpty()) {
                 getSourceAccountingLines().add(new PaymentRequestAccount(this, poa));
             }
         }
     }
 
     /**
      * @see org.kuali.ole.module.purap.businessobject.PurApItem#getAccountingLineClass()
      */
     @Override
     public Class getAccountingLineClass() {
         return PaymentRequestAccount.class;
     }
 
     public boolean isDisplayOnPreq() {
         PurchaseOrderItem poi = getPurchaseOrderItem();
         if (ObjectUtils.isNull(poi)) {
             LOG.debug("poi was null");
             return false;
         }
 
         // if the po item is not active... skip it
         if (!poi.isItemActiveIndicator()) {
             if (LOG.isDebugEnabled()) {
                 LOG.debug("poi was not active: " + poi.toString());
             }
             return false;
         }
 
         ItemType poiType = poi.getItemType();
 
         if (poiType.isQuantityBasedGeneralLedgerIndicator()) {
             if (poi.getItemQuantity().isGreaterThan(poi.getItemInvoicedTotalQuantity())) {
                 return true;
             } else {
                 if (ObjectUtils.isNotNull(this.getItemQuantity()) && this.getItemQuantity().isGreaterThan(KualiDecimal.ZERO)) {
                     return true;
                 }
             }
 
             return false;
         } else { // not quantity based
             if (poi.getItemOutstandingEncumberedAmount().isGreaterThan(KualiDecimal.ZERO)) {
                 return true;
             } else {
                 if (PurApItemUtils.isNonZeroExtended(this)) {
                     return true;
                 }
                 return false;
             }
 
         }
     }
 
     /**
      * sets account line percentage to zero.
      *
      * @see org.kuali.ole.module.purap.businessobject.PurApItem#resetAccount()
      */
     @Override
     public void resetAccount() {
         super.resetAccount();
         this.getNewSourceLine().setAmount(null);
         this.getNewSourceLine().setAccountLinePercent(new BigDecimal(0));
     }
 
     /**
      * Added for electronic invoice
      */
     public void addToUnitPrice(BigDecimal addThisValue) {
         if (getItemUnitPrice() == null) {
             setItemUnitPrice(BigDecimal.ZERO);
         }
         BigDecimal addedPrice = getItemUnitPrice().add(addThisValue);
         setItemUnitPrice(addedPrice);
     }
 
     public void addToExtendedPrice(KualiDecimal addThisValue) {
         if (getExtendedPrice() == null) {
             setExtendedPrice(KualiDecimal.ZERO);
         }
         KualiDecimal addedPrice = getExtendedPrice().add(addThisValue);
         setExtendedPrice(addedPrice);
     }
 
     @Override
     public Class getUseTaxClass() {
         return PaymentRequestItemUseTax.class;
     }
 
     /**
      * preq item constructor - Delegate
      *
      * @param poi  - purchase order item
      * @param preq - payment request document
      */
     public PaymentRequestItem(OleInvoiceItem poi, OlePaymentRequestDocument preq) {
         this(poi, preq, new HashMap<String, ExpiredOrClosedAccountEntry>());
     }
 
 
     /**
      * Constructs a new payment request item, but also merges expired accounts.
      *
      * @param poi                        - purchase order item
      * @param preq                       - payment request document
      * @param expiredOrClosedAccountList - list of expired or closed accounts to merge
      */
     public PaymentRequestItem(OleInvoiceItem poi, OlePaymentRequestDocument preq, HashMap<String, ExpiredOrClosedAccountEntry> expiredOrClosedAccountList) {
 
         // copy base attributes w/ extra array of fields not to be copied
         PurApObjectUtils.populateFromBaseClass(PurApItemBase.class, poi, this, PurapConstants.PREQ_ITEM_UNCOPYABLE_FIELDS);
 
         setItemDescription(poi.getItemDescription());
 
         //New Source Line should be set for PaymentRequestItem
         resetAccount();
 
         // set up accounts
         List accounts = new ArrayList();
         for (PurApAccountingLine account : poi.getSourceAccountingLines()) {
             InvoiceAccount poa = (InvoiceAccount) account;
 
             // check if this account is expired/closed and replace as needed
             SpringContext.getBean(AccountsPayableService.class).processExpiredOrClosedAccount(poa, expiredOrClosedAccountList);
 
             //KFSMI-4522 copy an accounting line with zero dollar amount if system parameter allows
             if (poa.getAmount().isZero()) {
                 if (SpringContext.getBean(AccountsPayableService.class).canCopyAccountingLinesWithZeroAmount()) {
                     accounts.add(new PaymentRequestAccount(this, poa));
                 }
             } else {
                 accounts.add(new PaymentRequestAccount(this, poa));
             }
         }
 
         this.setSourceAccountingLines(accounts);
         this.getUseTaxItems().clear();
         //List<PurApItemUseTax> newUseTaxItems = new ArrayList<PurApItemUseTax>();
         /// this.setUseTaxItems(newUseTaxItems);
         //copy use tax items over, and blank out keys (useTaxId and itemIdentifier)
         /*
         this.getUseTaxItems().clear();
         for (PurApItemUseTax useTaxItem : poi.getUseTaxItems()) {
             PaymentRequestItemUseTax newItemUseTax = new PaymentRequestItemUseTax(useTaxItem);
             this.getUseTaxItems().add(newItemUseTax);
 
         }
         */
 
         // clear amount and desc on below the line - we probably don't need that null
         // itemType check but it's there just in case remove if it causes problems
         // also do this if of type service
         if ((ObjectUtils.isNotNull(this.getItemType()) && this.getItemType().isAmountBasedGeneralLedgerIndicator())) {
             // setting unit price to be null to be more consistent with other below the line
             // this.setItemUnitPrice(null);
         }
 
         // copy custom
         this.purchaseOrderItemUnitPrice = poi.getItemUnitPrice();
 //        this.purchaseOrderCommodityCode = poi.getPurchaseOrderCommodityCd();
 
         // set doc fields
         this.setPurapDocumentIdentifier(preq.getPurapDocumentIdentifier());
         this.setPurapDocument(preq);
     }
 
 }