/*
 *
 * Copyright 2002 Sun Microsystems, Inc. All Rights Reserved.
 * 
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 * 
 * - Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * - Redistribution in binary form must reproduce the above
 *   copyright notice, this list of conditions and the following
 *   disclaimer in the documentation and/or other materials
 *   provided with the distribution.
 * 
 * Neither the name of Sun Microsystems, Inc. or the names of
 * contributors may be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * 
 * This software is provided "AS IS," without a warranty of any
 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
 * EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE LIABLE FOR ANY
 * DAMAGES OR LIABILITIES SUFFERED BY LICENSEE AS A RESULT OF OR
 * RELATING TO USE, MODIFICATION OR DISTRIBUTION OF THIS SOFTWARE OR
 * ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE
 * FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT,
 * SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF
 * THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS
 * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * 
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or
 * maintenance of any nuclear facility.
 * 
 */

package com.sun.cb;

import javax.xml.soap.*;
import javax.servlet.*;
import javax.servlet.http.*;

import javax.xml.transform.*;

import java.util.*;
import java.io.*;

public class PriceListServlet extends HttpServlet {
    static MessageFactory fac = null;
    
    static {
        try {
            fac = MessageFactory.newInstance();
        } catch (Exception ex) {
            ex.printStackTrace();
        }
    };

    MessageFactory msgFactory;

    public void init(ServletConfig servletConfig) throws ServletException {
        super.init(servletConfig);
        try {
            // Initialize it to the default.
            msgFactory = MessageFactory.newInstance();
        } catch (SOAPException ex) {
            throw new ServletException("Unable to create message factory"
                + ex.getMessage());
        }
    }
    
    public void doPost( HttpServletRequest req, 
      HttpServletResponse resp)
                throws ServletException, IOException {
  try {
      // Get all the headers from the HTTP request.
        MimeHeaders headers = getHeaders(req);

      // Get the body of the HTTP request.
      InputStream is = req.getInputStream();

      // Now internalize the contents of the HTTP request and
      // create a SOAPMessage
      SOAPMessage msg = msgFactory.createMessage(headers, is);
      
      SOAPMessage reply = null;

      reply = onMessage(msg);

      if (reply != null) {
                
    // Need to call saveChanges because we're going to use the
    // MimeHeaders to set HTTP response information. These
    // MimeHeaders are generated as part of the save.

            if (reply.saveRequired()) {
                reply.saveChanges(); 
            }

            resp.setStatus(HttpServletResponse.SC_OK);

            putHeaders(reply.getMimeHeaders(), resp);
                    
            // Write out the message on the response stream.
            OutputStream os = resp.getOutputStream();
            reply.writeTo(os);
    
            os.flush();
                    
        } else 
            resp.setStatus(HttpServletResponse.SC_NO_CONTENT);

    } catch (Exception ex) {
        throw new ServletException(
               "JAXM POST failed " + ex.getMessage());
    }
}

    static MimeHeaders getHeaders(HttpServletRequest req) {

  Enumeration enum = req.getHeaderNames();
  MimeHeaders headers = new MimeHeaders();

  while (enum.hasMoreElements()) {
      String headerName = (String)enum.nextElement();
      String headerValue = req.getHeader(headerName);

      StringTokenizer values = new StringTokenizer(headerValue, ",");
      while (values.hasMoreTokens())
    headers.addHeader(headerName, values.nextToken().trim());
  }

  return headers;
    }

    static void putHeaders(MimeHeaders headers, 
               HttpServletResponse res) {

  Iterator it = headers.getAllHeaders();
  while (it.hasNext()) {
      MimeHeader header = (MimeHeader)it.next();

      String[] values = headers.getHeader(header.getName());
      if (values.length == 1)
    res.setHeader(header.getName(), header.getValue());
      else {
    StringBuffer concat = new StringBuffer();
    int i = 0;
    while (i < values.length) {
        if (i != 0)
      concat.append(',');
        concat.append(values[i++]);
    }

    res.setHeader(header.getName(), concat.toString());
        }
    }
    }

    // This is the application code for responding to the message.

    public SOAPMessage onMessage(SOAPMessage msg) {
        SOAPMessage message = null;
        try {
        //create price list message
        message = fac.createMessage();

            // Access the SOABBody object
        SOAPPart part = message.getSOAPPart();
        SOAPEnvelope envelope = part.getEnvelope();
        SOAPBody body = envelope.getBody();

        // Create the appropriate elements and add them

        Name bodyName = envelope.createName("price-list", "PriceList",
                            "http://sonata.coffeebreak.com");
        SOAPBodyElement list = body.addBodyElement(bodyName);

        //coffee
        Name coffeeN = envelope.createName("coffee");
        SOAPElement coffee = list.addChildElement(coffeeN);

        Name coffeeNm1 = envelope.createName("coffee-name");
        SOAPElement coffeeName = coffee.addChildElement(coffeeNm1);
        coffeeName.addTextNode("Arabica");

        Name priceName1 = envelope.createName("price");
        SOAPElement price1 = coffee.addChildElement(priceName1); 
        price1.addTextNode("4.50");

        Name coffeeNm2 = envelope.createName("coffee-name");
        SOAPElement coffeeName2 = coffee.addChildElement(coffeeNm2);
        coffeeName2.addTextNode("Espresso");

        Name priceName2 = envelope.createName("price");
        SOAPElement price2 = coffee.addChildElement(priceName2); 
        price2.addTextNode("5.00");

        Name coffeeNm3 = envelope.createName("coffee-name");
        SOAPElement coffeeName3 = coffee.addChildElement(coffeeNm3);
        coffeeName3.addTextNode("Dorada");

        Name priceName3 = envelope.createName("price");
        SOAPElement price3 = coffee.addChildElement(priceName3); 
        price3.addTextNode("6.00");

        Name coffeeNm4 = envelope.createName("coffee-name");
        SOAPElement coffeeName4 = coffee.addChildElement(coffeeNm4);
        coffeeName4.addTextNode("House Blend");

        Name priceName4 = envelope.createName("price");
        SOAPElement price4 = coffee.addChildElement(priceName4); 
        price4.addTextNode("5.00");

        message.saveChanges();

        } catch(Exception e) {
            e.printStackTrace();
        }
        return message;
    }
}