package ex5;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
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;

/**
 * Servlet implementation class ValidateServlet
 */
@WebServlet("/ValidateServlet")
public class ValidateServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

    /**
     * @see HttpServlet#HttpServlet()
     */
    public ValidateServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

		response.setContentType("text/html;charset=UTF-8");
		String name = request.getParameter("userId");
		String password = request.getParameter("password");
		String fileName = "/Error";
		String errorMsg = "";
		if (name == null || name.length() == 0) {
			errorMsg = "User Id must not be empty";
		}
		if (password == null || password.length() == 0) {
			errorMsg = errorMsg + " , password must not be empty";
		}
		request.setAttribute("error", errorMsg);
		if (errorMsg.length() == 0) {
			HttpSession session = request.getSession();
			session.setAttribute("name", name);
			fileName = "/Login";
		}
		RequestDispatcher rd = request.getRequestDispatcher(fileName);
		rd.forward(request, response);
	}

}