/*
    * Copyright 2006-2008 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.web.struts;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.struts.action.ActionForm;
  import org.apache.struts.action.ActionForward;
  import org.apache.struts.action.ActionMapping;
  import org.kuali.ole.module.purap.businessobject.PurchaseOrderVendorQuote;
  import org.kuali.ole.module.purap.document.PurchaseOrderDocument;
  import org.kuali.ole.module.purap.document.authorization.DocumentInitiationException;
  import org.kuali.ole.module.purap.document.service.PurchaseOrderService;
  import org.kuali.ole.sys.OLEConstants;
  import org.kuali.ole.sys.OLEKeyConstants;
  import org.kuali.ole.sys.context.SpringContext;
  import org.kuali.rice.kns.document.authorization.DocumentAuthorizer;
  import org.kuali.rice.kns.service.DocumentHelperService;
  import org.kuali.rice.kns.web.struts.action.KualiAction;
  import org.kuali.rice.krad.service.DocumentService;
  import org.kuali.rice.krad.util.GlobalVariables;
  
  import javax.servlet.ServletOutputStream;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  import java.io.ByteArrayOutputStream;
  
  /**
   * Struts Action for printing Purap documents outside of a document action
   */
  public class PrintAction extends KualiAction {
      private static org.apache.log4j.Logger LOG = org.apache.log4j.Logger.getLogger(PrintAction.class);
  
      @Override
      public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
          //get parameters
          String poDocNumber = request.getParameter("poDocNumber");
          Integer vendorQuoteId = new Integer(request.getParameter("vendorQuoteId"));
          if (StringUtils.isEmpty(poDocNumber) || StringUtils.isEmpty(poDocNumber)) {
              throw new RuntimeException();
          }
  
          // doc service - get this doc
          PurchaseOrderDocument po = (PurchaseOrderDocument) SpringContext.getBean(DocumentService.class).getByDocumentHeaderId(poDocNumber);
          DocumentAuthorizer documentAuthorizer = SpringContext.getBean(DocumentHelperService.class).getDocumentAuthorizer(po);
  
          if (!documentAuthorizer.canInitiate(OLEConstants.FinancialDocumentTypeCodes.PURCHASE_ORDER, GlobalVariables.getUserSession().getPerson())) {
              throw new DocumentInitiationException(OLEKeyConstants.AUTHORIZATION_ERROR_DOCUMENT, new String[]{GlobalVariables.getUserSession().getPerson().getPrincipalName(), "print", "Purchase Order"});
          }
  
          // get the vendor quote
          PurchaseOrderVendorQuote poVendorQuote = null;
          for (PurchaseOrderVendorQuote vendorQuote : po.getPurchaseOrderVendorQuotes()) {
              if (vendorQuote.getPurchaseOrderVendorQuoteIdentifier().equals(vendorQuoteId)) {
                  poVendorQuote = vendorQuote;
                  break;
              }
          }
  
          if (poVendorQuote == null) {
              throw new RuntimeException();
          }
  
          ByteArrayOutputStream baosPDF = new ByteArrayOutputStream();
          poVendorQuote.setTransmitPrintDisplayed(false);
          try {
              StringBuffer sbFilename = new StringBuffer();
              sbFilename.append("PURAP_PO_QUOTE_");
              sbFilename.append(po.getPurapDocumentIdentifier());
              sbFilename.append("_");
              sbFilename.append(System.currentTimeMillis());
              sbFilename.append(".pdf");
  
              // call the print service
              boolean success = SpringContext.getBean(PurchaseOrderService.class).printPurchaseOrderQuotePDF(po, poVendorQuote, baosPDF);
  
              if (!success) {
                  poVendorQuote.setTransmitPrintDisplayed(true);
                  if (baosPDF != null) {
                      baosPDF.reset();
                  }
                  return mapping.findForward(OLEConstants.MAPPING_BASIC);
              }
              response.setHeader("Cache-Control", "max-age=30");
              response.setContentType("application/pdf");
              StringBuffer sbContentDispValue = new StringBuffer();
              // sbContentDispValue.append("inline");
             sbContentDispValue.append("attachment");
             sbContentDispValue.append("; filename=");
             sbContentDispValue.append(sbFilename);
 
             response.setHeader("Content-disposition", sbContentDispValue.toString());
 
             response.setContentLength(baosPDF.size());
 
             ServletOutputStream sos;
 
             sos = response.getOutputStream();
 
             baosPDF.writeTo(sos);
 
             sos.flush();
 
         } finally {
             if (baosPDF != null) {
                 baosPDF.reset();
             }
         }
 
         return null;
     }
 
 }