/*
    * 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.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.document.PurchasingDocument;
  import org.kuali.ole.sys.document.validation.GenericValidation;
  import org.kuali.ole.sys.document.validation.event.AttributedDocumentEvent;
  import org.kuali.ole.sys.service.UniversityDateService;
  import org.kuali.rice.core.api.datetime.DateTimeService;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  import java.util.Date;
  
  public class PurchasingPaymentInfoValidation extends GenericValidation {
  
      DateTimeService dateTimeService;
      UniversityDateService universityDateService;
  
      public boolean validate(AttributedDocumentEvent event) {
          boolean valid = true;
          PurchasingDocument purDocument = (PurchasingDocument) event.getDocument();
  
          GlobalVariables.getMessageMap().addToErrorPath(PurapConstants.PAYMENT_INFO_ERRORS);
          valid &= checkBeginDateBeforeEndDate(purDocument);
          if (valid && (ObjectUtils.isNotNull(purDocument.getPurchaseOrderBeginDate()) || ObjectUtils.isNotNull(purDocument.getPurchaseOrderEndDate()))) {
              if (ObjectUtils.isNotNull(purDocument.getPurchaseOrderBeginDate()) && ObjectUtils.isNull(purDocument.getPurchaseOrderEndDate())) {
                  GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_END_DATE, PurapKeyConstants.ERROR_PURCHASE_ORDER_BEGIN_DATE_NO_END_DATE);
                  valid &= false;
              } else {
                  if (ObjectUtils.isNull(purDocument.getPurchaseOrderBeginDate()) && ObjectUtils.isNotNull(purDocument.getPurchaseOrderEndDate())) {
                      GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_BEGIN_DATE, PurapKeyConstants.ERROR_PURCHASE_ORDER_END_DATE_NO_BEGIN_DATE);
                      valid &= false;
                  }
              }
          }
          if (valid && ObjectUtils.isNotNull(purDocument.getPurchaseOrderBeginDate()) && ObjectUtils.isNotNull(purDocument.getPurchaseOrderEndDate())) {
              if (ObjectUtils.isNull(purDocument.getRecurringPaymentTypeCode())) {
                  GlobalVariables.getMessageMap().putError(PurapPropertyConstants.RECURRING_PAYMENT_TYPE_CODE, PurapKeyConstants.ERROR_RECURRING_DATE_NO_TYPE);
  
                  valid &= false;
              }
          } else if (valid && ObjectUtils.isNotNull(purDocument.getRecurringPaymentTypeCode())) {
              GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_BEGIN_DATE, PurapKeyConstants.ERROR_RECURRING_TYPE_NO_DATE);
              valid &= false;
          }
  
          //checks for when FY is set to next FY
          if (purDocument.isPostingYearNext()) {
              Integer currentFY = universityDateService.getCurrentFiscalYear();
              Date closingDate = universityDateService.getLastDateOfFiscalYear(currentFY);
  
              //if recurring payment begin dates entered, begin date must be > closing date
              if (ObjectUtils.isNotNull(purDocument.getPurchaseOrderBeginDate()) &&
                      (purDocument.getPurchaseOrderBeginDate().before(closingDate) ||
                              purDocument.getPurchaseOrderBeginDate().equals(closingDate))) {
                  GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_BEGIN_DATE, PurapKeyConstants.ERROR_NEXT_FY_BEGIN_DATE_INVALID);
                  valid &= false;
              }
          }
  
          GlobalVariables.getMessageMap().removeFromErrorPath(PurapConstants.PAYMENT_INFO_ERRORS);
          return valid;
      }
  
      /**
       * Implementation of the rule that if a document has a recurring payment begin date and end date, the begin date should come
       * before the end date. We needed to play around with this order if the fiscal year is the next fiscal year, since we
       * were dealing just with month and day, but we don't need to do that here; we're dealing with the whole Date object.
       *
       * @param purDocument the purchasing document to be validated
       * @return boolean false if the begin date is not before the end date.
       */
      protected boolean checkBeginDateBeforeEndDate(PurchasingDocument purDocument) {
          boolean valid = true;
  
          Date beginDate = purDocument.getPurchaseOrderBeginDate();
          Date endDate = purDocument.getPurchaseOrderEndDate();
          if (ObjectUtils.isNotNull(beginDate) && ObjectUtils.isNotNull(endDate)) {
              if (dateTimeService.dateDiff(beginDate, endDate, false) <= 0) {
                  valid &= false;
                  GlobalVariables.getMessageMap().putError(PurapPropertyConstants.PURCHASE_ORDER_END_DATE, PurapKeyConstants.ERROR_PURCHASE_ORDER_BEGIN_DATE_AFTER_END);
              }
         }
 
         return valid;
     }
 
     public DateTimeService getDateTimeService() {
         return dateTimeService;
     }
 
     public void setDateTimeService(DateTimeService dateTimeService) {
         this.dateTimeService = dateTimeService;
     }
 
     public UniversityDateService getUniversityDateService() {
         return universityDateService;
     }
 
     public void setUniversityDateService(UniversityDateService universityDateService) {
         this.universityDateService = universityDateService;
     }
 
 }