/*
    * Copyright 2008-2009 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.document.InvoiceDocument;
  import org.kuali.ole.sys.document.validation.GenericValidation;
  import org.kuali.ole.sys.document.validation.event.AttributedDocumentEvent;
  import org.kuali.rice.kew.api.WorkflowDocument;
  import org.kuali.rice.krad.bo.Note;
  import org.kuali.rice.krad.util.GlobalVariables;
  import org.kuali.rice.krad.util.KRADConstants;
  import org.kuali.rice.krad.util.ObjectUtils;
  
  import java.util.List;
  import java.util.Set;
  
  public class InvoiceImageAttachmentValidation extends GenericValidation {
  
      public boolean validate(AttributedDocumentEvent event) {
          boolean valid = true;
          InvoiceDocument document = (InvoiceDocument) event.getDocument();
          GlobalVariables.getMessageMap().clearErrorPath();
  
          if (isDocumentStoppedInRouteNode(document, "ImageAttachment")) {
              //assume false if we're in the correct node
              valid = false;
  
              //loop through notes looking for a invoice image
              List boNotes = document.getNotes();
              if (ObjectUtils.isNotNull(boNotes)) {
                  for (Object obj : boNotes) {
                      Note note = (Note) obj;
  
                      note.refreshReferenceObject("attachment");
                      if (ObjectUtils.isNotNull(note.getAttachment()) && PurapConstants.AttachmentTypeCodes.ATTACHMENT_TYPE_INVOICE_IMAGE.equals(note.getAttachment().getAttachmentTypeCode())) {
                          valid = true;
                          break;
                      }
                  }
              }
  
              if (valid == false) {
                  GlobalVariables.getMessageMap().putError(KRADConstants.NEW_DOCUMENT_NOTE_PROPERTY_NAME, PurapKeyConstants.ERROR_PAYMENT_REQUEST_INVOICE_REQUIRED);
              }
          }
  
          GlobalVariables.getMessageMap().clearErrorPath();
  
          return valid;
      }
  
      /**
       * @param document
       * @param nodeName
       * @return
       */
      protected boolean isDocumentStoppedInRouteNode(InvoiceDocument document, String nodeName) {
          WorkflowDocument workflowDoc = document.getDocumentHeader().getWorkflowDocument();
          Set<String> currentRouteLevels = workflowDoc.getCurrentNodeNames();
          if (currentRouteLevels.contains(nodeName) && workflowDoc.isApprovalRequested()) {
              return true;
          }
          return false;
      }
  }