/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package org.ufcspa.simdecs.comunicacao;

import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.*;
import java.sql.*;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.NoResultException;
import javax.persistence.Persistence;
import javax.servlet.http.*;
import org.ufcspa.simdecs.entidade.Log;
import org.ufcspa.simdecs.entidade.Usuario;

/**
 *
 * @author pbarros
 * testye
 */
public class MetodoAutenticacao 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
     */
    private ServletConfig config;
    public void init(ServletConfig config)
            throws ServletException{
        this.config=config;
    }
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        
        PrintWriter out = response.getWriter();
        // alteracao solicitado mosmmann 
        //response.setContentType("text/html;charset=UTF-8");
        
        response.setContentType( "text/xml" );
        response.setHeader( "Cache-Control", "no-cache" );
        ///para devolver arquivo anexo
        //response.addHeader("Content-Disposition", "attachment; filename="+ "teste");
        //response.setContentType("text/html;charset=UTF-8");
        
        //metodo antigo
        //PrintWriter out = response.getWriter();
        EntityManagerFactory emf = Persistence.createEntityManagerFactory("simdecsPU");
        EntityManager em = emf.createEntityManager();
        out.println( "<xml>" );
        
        Usuario user;
	try {
		user = (Usuario) em.createQuery("select usu from Usuario as usu where usu.login=:login and usu.senha=:senha")
										.setParameter("login", request.getParameter("user"))
										.setParameter("senha", request.getParameter("pass"))
										.getSingleResult();	
                
                out.println( "<id>" + String.valueOf(user.getId()) + "</id>" );
//                out.println("OK "+ user.getId());
//                out.close();
	} catch (NoResultException ne) {
            
//		request.setAttribute("id","0");		
//		out.println("Usuario ou senha Inválido ");
                out.println( "<id>" + "0" + "</id>" );
                
	} finally {         
            out.println( "</xml>" );
            out.close();
        }
    }

    // <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>
}