package org.zielware.pages;

import java.io.IOException;
import java.util.List;

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 org.zielware.features.*;

import database.api.DBApi;
import database.model.User;


@WebServlet("/login")
public class LoginPage extends HttpServlet
                        implements iCommunicatesHandling {
    private static final long serialVersionUID = 1L;

    /* DB is declared here */
    public static DBApi dbapi = new DBApi();


    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {

        String login = req.getParameter("login_field");
        String password = req.getParameter("password_field");
        String username;
        Correctness correctness = new Correctness();
        List<User> users = dbapi.selectUsers();

        //dbapi.insertUser("aa", "aa", "aa", 1);

        /*****************
         ** VALIDATION **
         *****************/
        if(correctness.checkFillOfFields("username", login, password)){
            if(correctness.checkIsInputCorrect(login, password)){
                /// list is null when select failed
                if (users != null){
                    for(User u:users){
                        if ( login.equals(u.getLogin()) &&
                                password.equals(u.getPassword())){
                            System.out.println(Communicates.messagesArray[2] +
                                    ", jego privileges: " + u.getPrivileges());
                            if(u.getPrivileges()!= 0){
                                resp.sendRedirect("admin_page.jsp");
                            }else{
                                username = u.getUsername();
                                req.getSession().setAttribute("username", username);
                                resp.sendRedirect("success.jsp");
                            }
                        }
                    }
                }
            }else{
                fillGapAgainAction("login.jsp", 1, req, resp);
            }
        }else{
            fillGapAgainAction("login.jsp", 0, req, resp);
        }
    }

    @Override
    public void fillGapAgainAction(String jsp, int whichMsg,
            HttpServletRequest req, HttpServletResponse resp)
                    throws ServletException, IOException
    {
                System.out.println(Communicates.messagesArray[whichMsg]);
                req.setAttribute("msg", Communicates.messagesArray[whichMsg]);
                RequestDispatcher dispatcher = req.getRequestDispatcher(jsp);
                dispatcher.forward(req, resp);
    }
}