/**
    * Copyright (c) 2002-2015, JWebUnit team.
    *
    * This file is part of JWebUnit.
    *
    * JWebUnit is free software: you can redistribute it and/or modify
    * it under the terms of the GNU Lesser General Public License as published by
    * the Free Software Foundation, either version 3 of the License, or
    * (at your option) any later version.
   *
   * JWebUnit is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with JWebUnit.  If not, see <http://www.gnu.org/licenses/>.
   */
  package net.sourceforge.jwebunit.tests.util;
  
  import java.io.IOException;
  import java.io.PrintWriter;
  import java.util.Iterator;
  import java.util.List;
  
  import javax.servlet.ServletException;
  import javax.servlet.http.HttpServlet;
  import javax.servlet.http.HttpServletRequest;
  import javax.servlet.http.HttpServletResponse;
  
  import org.apache.commons.fileupload.FileItem;
  import org.apache.commons.fileupload.FileItemFactory;
  import org.apache.commons.fileupload.FileUploadException;
  import org.apache.commons.fileupload.disk.DiskFileItemFactory;
  import org.apache.commons.fileupload.servlet.ServletFileUpload;
  
  public class ParamsServlet extends HttpServlet {
  
      private static final long serialVersionUID = 1L;
  
      protected void doGet(HttpServletRequest request,
              HttpServletResponse response) throws ServletException, IOException {
          doPost(request, response);
      }
  
      protected void doPost(HttpServletRequest request,
              HttpServletResponse response) throws ServletException, IOException {
          response.setContentType("text/html");
          PrintWriter out = response.getWriter();
          out.write(HtmlHelper.getStart("Submitted parameters"));
          out.write("<h1>Submitted parameters</h1>\n<p>Params are:<br/>");
          /*
           * Prints POST and GET parameters as name=[value1[,value2...]] separated
           * by <BR/>
           */
  
          // Check that we have a file upload request
          boolean isMultipart = ServletFileUpload.isMultipartContent(request);
          if (isMultipart) {
              // Create a factory for disk-based file items
              FileItemFactory factory = new DiskFileItemFactory();
  
              // Create a new file upload handler
              ServletFileUpload upload = new ServletFileUpload(factory);
  
              // Parse the request
              List /* FileItem */items = null;
              try {
                  items = upload.parseRequest(request);
              } catch (FileUploadException e) {
                  throw new ServletException(e);
              }
  
              String ref = null;
              // Process the uploaded items
              Iterator iter = items.iterator();
              while (iter.hasNext()) {
                  FileItem item = (FileItem) iter.next();
  
                  if (item.isFormField()) {
                      out.write(" " + item.getFieldName() + "=["
                              + item.getString());
                      if (item.getFieldName().equals("myReferer")) {
                          ref = item.getString();
                      }
                  } else {
                      String fieldName = item.getFieldName();
                      String fileName = item.getName();
                      out.write(" " + fieldName + "=[" + fileName
                              + "{" + new String(item.get()) + "}");
  
                  }
                  if (iter.hasNext()) {
                  	out.write("]<br/>\n");
                  }
              }
              out.write("]</p>\n");
              out.write(HtmlHelper.getLinkParagraph("return", ref));
          } else {
             java.util.Enumeration params = request.getParameterNames();
             for (; params.hasMoreElements();) {
                 String p = params.nextElement().toString();
                 String[] v = request.getParameterValues(p);
                 out.write(p + "=[");
                 int n = v.length;
                 if (n > 0) {
                     out.write(v[0] != null ? v[0] : "");
                     for (int i = 1; i < n; i++) {
                         out.write("," + (v[i] != null ? v[i] : ""));
                     }
                 }
                 if (params.hasMoreElements()) {
                 	out.write("]<br/>\n");
                 }
             }
             out.write("]</p>\n");
             String ref = request.getHeader("Referer");
             if (ref == null) {
                 if (request.getParameterValues("myReferer") != null) {
                     ref = request.getParameterValues("myReferer")[0];
                 }
             }
             out.write(HtmlHelper.getLinkParagraph("return", ref));
         }
         out.write(HtmlHelper.getEnd());
     }
 
 }