package uk.ac.dundee.computing.agrimes.instagrim.servlets;

import com.datastax.driver.core.Cluster;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletConfig;
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;
import uk.ac.dundee.computing.agrimes.instagrim.lib.CassandraHosts;
import uk.ac.dundee.computing.agrimes.instagrim.models.User;
import uk.ac.dundee.computing.agrimes.instagrim.stores.LoggedIn;

// need to have some form of error checking when no information or wrong information entered

@WebServlet(name = "Login", urlPatterns = {"/Login","/Login/*"})
public class Login extends HttpServlet {

    Cluster cluster=null;

    public void init(ServletConfig config) throws ServletException {
        cluster = CassandraHosts.getCluster();
    }

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        String username=request.getParameter("username");
        String password=request.getParameter("password");

        User us=new User();
        us.setCluster(cluster);
        boolean isValid=us.IsValidUser(username, password);
        HttpSession session=request.getSession();
        System.out.println("Session in servlet "+session);
        if (isValid){
            LoggedIn lg= new LoggedIn();
            lg.setLoggedin();
            lg.setUsername(username);

            session.setAttribute("LoggedIn", lg);
            System.out.println("Session in servlet "+session);
            RequestDispatcher rd=request.getRequestDispatcher("index.jsp");
        rd.forward(request,response);

        }else{
            response.sendRedirect("/Instagrim");
        }
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        RequestDispatcher rd=request.getRequestDispatcher("login.jsp");
        rd.forward(request,response);
    }

    @Override
    public String getServletInfo() {
        return "Short description";
    }
}