package at.gv.egovernment.moa.id.auth.servlet;

import java.io.IOException;
import java.text.DateFormat;
import java.util.Date;
import java.util.Locale;

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

import at.gv.egovernment.moa.id.auth.MOAIDAuthInitializer;
import at.gv.egovernment.moa.id.util.HTTPRequestJSPForwarder;
import at.gv.egovernment.moa.id.util.MOAIDMessageProvider;
import at.gv.egovernment.moa.logging.Logger;

/**
 * Servlet requested for updating the MOA-ID Auth configuration from configuration file
 * 
 * @author Paul Ivancsics
 * @version $Id$
 */
public class ConfigurationServlet extends HttpServlet {

  /**
   * Handle a HTTP GET request, used to indicated that the MOA
   * configuration needs to be updated (reloaded).
   * 
   * @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest, HttpServletResponse)
   */
  public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {

    MOAIDMessageProvider msg = MOAIDMessageProvider.getInstance();

    try {
      MOAIDAuthInitializer.initialized=false;
      MOAIDAuthInitializer.initialize();
      String message = msg.getMessage("config.00", new Object[] 
      	{ DateFormat.getTimeInstance(DateFormat.MEDIUM, Locale.GERMAN).format(new Date())} );
            
      Logger.info(message);
			HTTPRequestJSPForwarder.forwardNamed(message, "/message-auth.jsp", getServletContext(), request, response);
			
    } catch (Throwable t) {
      String errorMessage = msg.getMessage("config.04", null);
      Logger.error(errorMessage, t);
			HTTPRequestJSPForwarder.forwardNamed(errorMessage, "/message-auth.jsp", getServletContext(), request, response);
    }
  }

  /**
   * Do the same as <code>doGet</code>.
   * 
   * @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest, HttpServletResponse)
   */
  public void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    doGet(request, response);
  }
	
	/**
	 * Calls the web application initializer.
	 * 
	 * @see javax.servlet.Servlet#init(ServletConfig)
	 */
	public void init(ServletConfig servletConfig) throws ServletException {
		super.init(servletConfig);
	}

}