/*
 * Created on 25.11.2003
 *
 * (c) Stabsstelle IKT-Strategie des Bundes
 */
package test.at.gv.egovernment.moa.spss.slinterface;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.log4j.Logger;

import at.gv.egovernment.moa.spss.slinterface.Constants;
import at.gv.egovernment.moa.spss.slinterface.Utils;

/**
 * @author Gregor Karlinger (mailto:gregor.karlinger@cio.gv.at) 
 */
public class DataURLServlet extends HttpServlet
{
  private static Logger logger_ = Logger.getLogger(Constants.LH_TEST_);

  public DataURLServlet()
  {
    super();
  }

  /* ---------------------------------------------------------------------------------------------------- */

  public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException
  {
    // Read content form POST request
    try
    {
      logger_.debug("Received POST request:");
      logger_.debug("Content type: \"" + request.getContentType() + "\".");
      byte[] contentBytes = Utils.readFromInputStream(request.getInputStream());
      String contentStr = new String(contentBytes);
      logger_.debug("Content:\n" + new String(contentStr));

      StringBuffer contentStrBuf = new StringBuffer(contentStr);
      int startPos = 0;
      while (startPos < contentStrBuf.length())
      {
        if (contentStrBuf.charAt(startPos) == '<')
        {
          contentStrBuf.replace(startPos, startPos + 1, "&lt;");
          startPos += 4;
        }
        startPos++;
      }
      contentStr = contentStrBuf.toString();

      DataURLBean dataURLBean = new DataURLBean("Data URL Results", request.getContentType(), contentStr);
      request.setAttribute("dataURLResult", dataURLBean);
    }
    catch (Exception e)
    {
      String message = "Failed to read content from POST request.";
      logger_.error(message, e);
      throw new ServletException(message, e); 
    }
    
    // Invoke response JSP page
    try
    {
      response.setContentType("text/html");
      RequestDispatcher dispatcher = request.getRequestDispatcher("/pages/test/dataURL.jsp");
      dispatcher.include(request, response);
    }
    catch (IOException e)
    {
      String message = "Failed to send simple HTML answer to client.";
      logger_.error(message, e);
      throw new ServletException(message, e); 
    }
  }
}