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

import java.io.BufferedInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.ufcspa.simdecs.entidade.ArquivoCaso;

/**
 *
 * @author pbarros
 */
public class MetodoSelecionaCaso 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();
        //String file ;

        EntityManagerFactory emf = Persistence.createEntityManagerFactory("simdecsPU");
        EntityManager em = emf.createEntityManager();
        
        URL url = null;
        URLConnection urlConn = null;
        BufferedInputStream buf = null;
        ArquivoCaso arquivo;
        Integer idCaso = Integer.valueOf(request.getParameter("idArquivoCaso"));
        
//        out.print(request.getParameter("idArquivoCaso"));
        try {
            
            arquivo =  (ArquivoCaso) em.createQuery("select arq from ArquivoCaso as arq where arq.id ="+idCaso)
                                                                            //.setParameter("idC",idCaso)
                                                                            .getSingleResult();
//            out.println(arquivo.getEndArquivo());
            url = getServletContext().getResource(arquivo.getEndArquivo());
            //set response header
            response.setContentType("text/xml");
            urlConn = url.openConnection();
            //establish connection with URL presenting web.xml
            urlConn.connect();
            buf = new BufferedInputStream(urlConn.getInputStream());
            int readBytes = 0;
            while ((readBytes = buf.read()) != -1)
                out.write(readBytes);
            } catch (MalformedURLException mue) {
            throw new ServletException(mue.getMessage());
            } catch (IOException ioe) {
            throw new ServletException(ioe.getMessage());
        } finally {            
            out.close();
            buf.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>
}