/*
    * Copyright 2008 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.document.validation.impl;
  
  import org.apache.commons.lang.StringUtils;
  import org.kuali.ole.module.purap.PurapConstants;
  import org.kuali.ole.module.purap.PurapKeyConstants;
  import org.kuali.ole.module.purap.PurapPropertyConstants;
  import org.kuali.ole.module.purap.businessobject.PurchaseOrderItem;
  import org.kuali.ole.module.purap.document.PurchaseOrderDocument;
  import org.kuali.ole.select.businessobject.OleInvoiceItem;
  import org.kuali.ole.select.document.OleInvoiceDocument;
  import org.kuali.ole.select.document.OlePurchaseOrderDocument;
  import org.kuali.ole.sys.OLEPropertyConstants;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.ole.sys.document.validation.GenericValidation;
  import org.kuali.ole.sys.document.validation.event.AttributedDocumentEvent;
  import org.kuali.rice.core.api.util.type.KualiDecimal;
  import org.kuali.rice.krad.service.DocumentHeaderService;
  import org.kuali.rice.krad.service.KRADServiceLocator;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  import java.util.*;
  
  public class InvoicePurchaseOrderIdValidation extends GenericValidation {
  
      public boolean validate(AttributedDocumentEvent event) {
          boolean valid = true;
          boolean lineItemtypeIndicator = false;
          OleInvoiceDocument document = (OleInvoiceDocument) event.getDocument();
          GlobalVariables.getMessageMap().clearErrorPath();
          GlobalVariables.getMessageMap().addToErrorPath(OLEPropertyConstants.DOCUMENT);
          Integer POID = document.getPurchaseOrderIdentifier();
          if (document.getItems().size() > 0) {
              Set closedVendorIds = new TreeSet();
              for (OleInvoiceItem invoiceItem : (List<OleInvoiceItem>) document.getItems()) {
                  if (invoiceItem.getItemType().isLineItemIndicator()) {
                      lineItemtypeIndicator = true;
                  }
                  //PurchaseOrderDocument purchaseOrderDocument =document.getPurchaseOrderDocument(invoiceItem.getPurchaseOrderIdentifier());
                  PurchaseOrderDocument purchaseOrderDocument = null ;
                  Map map = new HashMap();
                  map.put("purapDocumentIdentifier",invoiceItem.getPurchaseOrderIdentifier());
                  List<OlePurchaseOrderDocument> purchaseOrderDocumentList = (List<OlePurchaseOrderDocument>) KRADServiceLocator.getBusinessObjectService().findMatching(OlePurchaseOrderDocument.class, map);
                  if(purchaseOrderDocumentList!=null && purchaseOrderDocumentList.size()>0){
                      for (OlePurchaseOrderDocument poDoc : purchaseOrderDocumentList) {
                          if(poDoc.getPurchaseOrderCurrentIndicatorForSearching()){
                              purchaseOrderDocument = poDoc;
                          }
                      }
                  }
                  if (purchaseOrderDocument != null && purchaseOrderDocument.getDocumentHeader() == null) {
                      purchaseOrderDocument.setDocumentHeader(SpringContext.getBean(DocumentHeaderService.class).getDocumentHeaderById(purchaseOrderDocument.getDocumentNumber()));
  
                  }
                  //OlePurchaseOrderDocument purchaseOrderDocument = (OlePurchaseOrderDocument) purchaseOrderDocument1;
                  if (purchaseOrderDocument != null && purchaseOrderDocument.isPendingActionIndicator()) {
                      GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_IDENTIFIER, PurapKeyConstants.ERROR_PURCHASE_PENDING_ACTION);
                      valid &= false;
                  } else if (purchaseOrderDocument != null && !StringUtils.equals(purchaseOrderDocument.getApplicationDocumentStatus(), PurapConstants.PurchaseOrderStatuses.APPDOC_OPEN)) {
                      closedVendorIds.add(purchaseOrderDocument.getPurapDocumentIdentifier());
                      // if the PO is pending and it is not a Retransmit, we cannot generate a Invoice for it
                  }
              }
              if(closedVendorIds.size() > 0){
                  GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_IDENTIFIER, PurapKeyConstants.ERROR_POS_NOT_OPEN,closedVendorIds.toString().replace("[" ,"").replace("]",""));
                  valid &= false;
              }
          } else {
              GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_IDENTIFIER, PurapKeyConstants.ERROR_PURCHASE_ORDER_NOT_EXIST);
              valid &= false;
          }
  
  
          //for (OlePurchaseOrderDocument purchaseOrderDocument : document.getPurchaseOrderDocuments()) {
          //PurchaseOrderDocument purchaseOrderDocument = document.getPurchaseOrderDocument();
              /*if (!lineItemtypeIndicator) {
                  GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_IDENTIFIER, PurapKeyConstants.ERROR_PURCHASE_ORDER_NOT_EXIST);
                  valid &= false;
              }*/
          return valid;
      }
  
      /**
       * Determines if there are items with encumbrances to be invoiced on passed in
       * purchase order document.
      *
      * @param document - purchase order document
      * @return
      */
     protected boolean encumberedItemExistsForInvoicing(PurchaseOrderDocument document) {
         boolean zeroDollar = true;
         GlobalVariables.getMessageMap().clearErrorPath();
         GlobalVariables.getMessageMap().addToErrorPath(OLEPropertyConstants.DOCUMENT);
         for (PurchaseOrderItem poi : (List<PurchaseOrderItem>) document.getItems()) {
             // Quantity-based items
             if (poi.getItemType().isLineItemIndicator() && poi.getItemType().isQuantityBasedGeneralLedgerIndicator()) {
                 KualiDecimal encumberedQuantity = poi.getItemOutstandingEncumberedQuantity() == null ? KualiDecimal.ZERO : poi.getItemOutstandingEncumberedQuantity();
                 if (encumberedQuantity.compareTo(KualiDecimal.ZERO) == 1) {
                     zeroDollar = false;
                     break;
                 }
             }
             // Service Items or Below-the-line Items
             else if (poi.getItemType().isAmountBasedGeneralLedgerIndicator() || poi.getItemType().isAdditionalChargeIndicator()) {
                 KualiDecimal encumberedAmount = poi.getItemOutstandingEncumberedAmount() == null ? KualiDecimal.ZERO : poi.getItemOutstandingEncumberedAmount();
                 if (encumberedAmount.compareTo(KualiDecimal.ZERO) == 1) {
                     zeroDollar = false;
                     break;
                 }
             }
         }
         if (zeroDollar) {
             GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_IDENTIFIER, PurapKeyConstants.ERROR_NO_ITEMS_TO_INVOICE);
         }
         //GlobalVariables.getMessageMap().clearErrorPath();
         return !zeroDollar;
     }
 
 }