package com.llgc;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * Servlet implementation class ServletJSP5
 */
@WebServlet ("/ServletJSP5")
public class ServletJSP5 extends HttpServlet
{
  /**
   * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
   *      response)
   */
  protected void doGet (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
  {
    response.setCharacterEncoding ("UTF-8");
    String value = getCookie (request.getCookies (), "compteur");
    response.setContentType ("text/html");
    int compteur = 0;
    if (value != null)
    {
      compteur = Integer.parseInt (value);
    }
    compteur++;
    Cookie c = new Cookie ("compteur", "" + compteur);
    c.setMaxAge (3600);
    response.addCookie (c);
    this.getServletContext ().getRequestDispatcher ("/WEB-INF/indexjsp-jstl5.jsp").forward (request, response);
  }

  /**
   * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
   *      response)
   */
  protected void doPost (HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
  {
    doGet (request, response);
  }

  // Renvoie la valeur d'un cookie.
  protected static String getCookie (Cookie[] cookies, String cookieName)
  {
    if (cookies == null)
    {
      return null;
    }
    for (int i = 0; i < cookies.length; i++)
    {
      if (cookieName.equalsIgnoreCase (cookies[i].getName ()))
      {
        return cookies[i].getValue ();
      }
    }
    return null;
  }
}