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 */
package admin;

import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 *
 * @author Lívia
 */
@WebServlet(name = "zmena_prav", urlPatterns = {"/zmena_prav"})
public class zmena_prav extends HttpServlet {
 String driver = "com.mysql.jdbc.Driver";
    Connection con = null;
    Statement stmt = null;
    ResultSet rs = null;
    String userName = "root";
    String password = "";
    String URL = "jdbc:mysql://localhost/kelebercova_shop";
    HttpSession session;
    int id_usera= 0;

    public void VypisP(PrintWriter out){
        try{
            stmt = con.createStatement();
            rs = stmt.executeQuery("SELECT * FROM pouzivatelia WHERE id <> "+id_usera+"");
            out.println("<h4>Používatelia</h4>");
            while(rs.next()){
                out.println("<form method=post action = zmena_prav>");
     out.println("Meno: "+rs.getString("meno")+"</br>"+"Priezvisko: "+ rs.getString("priezvisko")+"</br>"+"email: "+ rs.getString("email"));
                 out.println("<input type='hidden' name='IDusera' value='"+rs.getString("ID")+"'>");
                 out.println("<input type='hidden' name='Menousera' value='"+rs.getString("meno")+"'>");
                 out.println("<input type='hidden' name='Priezviskousera' value='"+rs.getString("priezvisko")+"'>");
                 out.println("<input type='hidden' name='Heslousera' value='"+rs.getString("heslo")+"'>");
                 out.println("<input type='hidden' name='Emailusera' value='"+rs.getString("email")+"'>");
                 out.println("<input type='hidden' name='Adresausera' value='"+rs.getString("adresa")+"'>");
                 out.println("<input type='submit' name='tlacidlo' value='Admin'>");
                 out.println("</form>");
            }
        }catch (Exception e){
            System.out.println(e.toString());
        }
    }
    public void VypisA(PrintWriter out){
          try{
            stmt = con.createStatement();
            rs = stmt.executeQuery("SELECT * FROM admini WHERE id <> "+id_usera+"");
            out.println("<h4>Administrátori</h4>");
            while(rs.next()){
                out.println("<form method=post action = zmena_prav>");
                out.println("Meno: "+rs.getString("meno")+"</br>"+"Priezvisko: "+ rs.getString("priezvisko")+"</br>"+"email: "+ rs.getString("email"));
                 out.println("<input type='hidden' name='IDusera' value='"+rs.getString("ID")+"'>");
                out.println("<input type='submit' name='tlacidlo' value='Zmeň admin práva'>");
                out.println("</form>");
            }

        }catch (Exception e){
            System.out.println(e.toString());
        }
    }

    public void ZapisAkoAdmina(PrintWriter out,String meno, String priezvisko, String heslo, String email, String adresa){
        try{
            stmt = con.createStatement();
            stmt.executeUpdate("INSERT INTO admini (meno, priezvisko, heslo,email, adresa)SELECT meno, priezvisko, heslo, email, adresa FROM pouzivatelia WHERE ID<> "+id_usera+"");
        }catch(Exception e){
            e.toString();
        }
    }

     public void init() {
        try {
         super.init();
         Class.forName(driver);
         con = DriverManager.getConnection(URL, userName, password );
        } catch (Exception ex) { }
    }
    /**
     * 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");
        try (PrintWriter out = response.getWriter()) {
            /* TODO output your page here. You may use following sample code. */

            out.println("<!DOCTYPE html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Servlet zmena_prav</title>");
            out.println("</head>");
            out.println("<body>");
            VypisP(out);VypisA(out);
          if (request.getContentType() != null) {
                String tlacidlo = (request.getParameter("tlacidlo")).substring(0,1);
                if (tlacidlo.equals("A")) {
                    ZapisAkoAdmina(out,request.getParameter("Menousera"),request.getParameter("Priezviskousera"),request.getParameter("Heslousera"), request.getParameter("Emailusera"), request.getParameter("Adresausera"));
                }



            out.println("</body>");
            out.println("</html>");
        }
    }
    }
    // <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>

}