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package org.golovin.vr;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Enumeration;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author golovin
 */
public class RegistrationForm 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");
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();
        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!doctype html>");
            out.println("<html>");

            out.println("<head>");
            out.println("<title>Registration Form</title>");
            out.println("</head>");

            out.println("<body>");
            out.println("<h2>Пожалуйста, заполните следующую форму:</h2>");

            out.println("<form method='post' accept-charset='UTF-8' action='" +
                    request.getContextPath()+ "/srv/regform'>");
            out.println("<table border='0'>");

            out.println("<tr>");
            out.println("<td valign='top'>Имя:</td>");
            out.println("<td valign='top'><input type='text' name='firstname' size='20'></td>");
            out.println("</tr>");

            out.println("<tr>");
            out.println("<td valign='top'>Фамилия:</td>");
            out.println("<td valign='top'><input type='text' name='lastname' size='20'></td>");
            out.println("</tr>");

            out.println("<tr>");
            out.println("<td valign='top'>Email:</td>");
            out.println("<td valign='top'><input type='text' name='email' size='20'></td>");
            out.println("</tr>");

            out.println("<tr>");
            out.println("<td valign='top'><input type='submit' value='Зарегистрироваться'></td>");
            out.println("</tr>");

            out.println("</table>");
            out.println("</form>");

            out.println("</body>");

            out.println("</html>");
        } finally {
            out.close();
        }
    }

    protected void processResponse(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        Enumeration paramNames = request.getParameterNames();

        response.setContentType("text/html;charset=UTF-8");
        request.setCharacterEncoding("UTF-8");
        response.setCharacterEncoding("UTF-8");
        PrintWriter out = response.getWriter();

        try {
            /* TODO output your page here. You may use following sample code. */
            out.println("<!doctype html>");
            out.println("<html>");
            out.println("<head>");
            out.println("<title>Registration Form</title>");
            out.println("</head>");
            out.println("<body>");

            if (!paramNames.hasMoreElements()) {
                out.println("<h2>Не было передано ни одного параметра!</h2>");
            } else {
                out.println("<h2>Были переданы следующие параметры:</h2>");

                while (paramNames.hasMoreElements()) {
                    String parName = (String) paramNames.nextElement();
                    out.println("<strong>" + parName + "</strong> : "
                            + request.getParameter(parName));
                    out.println("<br>");
                }
            }

            out.println("</body>");
            out.println("</html>");
        } finally {
            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 {
        processResponse(request, response);
    }

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