package main;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import model.User;

/**
 *
 * @author ahmedkotb
 */
public class Login extends HttpServlet {

    /**
     * Processes requests for both HTTP <code>GET</code> and
     * <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, IOException {
        response.setContentType("text/html;charset=UTF-8");
        PrintWriter out = response.getWriter();

        HttpSession session = request.getSession();

        String sessionUsername = (String) session.getAttribute("username");

        if (sessionUsername != null) {
            response.sendRedirect("/welcome.jsp");
        }

    String username = request.getParameter("username");
    String password = request.getParameter("password");

        User user = new User(request.getParameter("username"),
                            request.getParameter("password"));


    if (user.login()) {
            session.setAttribute("username", username);
            Cookie cookieUsername = new Cookie("username", username);
            Cookie cookiePassword = new Cookie("password", password);
            cookieUsername.setMaxAge(120);
            cookiePassword.setMaxAge(120);
            response.addCookie(cookieUsername);
            response.addCookie(cookiePassword);


            response.sendRedirect("/welcome.jsp");
    }else{
            System.out.println("Hello");
        request.setAttribute("error_msg","The username or password you "
                    + "entered is incorrect." );
            getServletContext().getRequestDispatcher("/LoginForm.jsp")
                    .forward(request, response);
    }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods.
    // Click on the + sign on the left to edit the code.">
    /**
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request,
            HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /**
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}