package servlets;

import dataSets.Role;
import dataSets.User;
import services.ServiceFactory;
import services.ValidatorService;
import services.ValidatorServiceImpl;
import utils.HashUtil;

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 java.io.IOException;
import java.io.PrintWriter;
import java.util.Date;
import java.util.HashSet;
import java.util.Set;

@WebServlet("/regUser")
public class regUserServlet extends HttpServlet {

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.getRequestDispatcher("/regUser.jsp").forward(req, resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        resp.setContentType("text/html;charset=utf-8");
        PrintWriter out = resp.getWriter();
        String password = req.getParameter("password");
        req.setCharacterEncoding("UTF-8");
        resp.setContentType("text/html;charset=utf-8");
        RequestDispatcher rs = getServletContext().getRequestDispatcher("/regUser.jsp");
        String salt = HashUtil.getRandomGeneratedSalt();

        System.out.println(req.getParameter("first_name"));

        User user = new User();
        user.setLogin(req.getParameter("login"));
        user.setPassword(password);
        user.setCreated_at(new Date());
        user.setUpdated_at(new Date());
        user.setMobile(req.getParameter("mobile"));
        user.setFirst_name(req.getParameter("first_name"));
        user.setMiddle_name(req.getParameter("middle_name"));
        user.setLast_name(req.getParameter("last_name"));
        user.setIs_blocked(false);
        user.setIs_deleted(false);
        user.setSalt(salt);

        String roleName = req.getParameter("role");
        Role role = ServiceFactory.getInstance().getAccountService().getRole(roleName);
        Set<Role> roles = new HashSet<>();
        roles.add(role);
        user.setRoles(roles);

        ValidatorService<User> validator = new ValidatorServiceImpl<>();
        String msg = validator.getErrorMsg(user);

        if (!msg.isEmpty()) {
            req.setAttribute("errorMessage", msg);
            rs.forward(req, resp);
        } else {
            password = HashUtil.getHashPasswordWithSalt(user.getPassword(), salt);
            user.setPassword(password);
            try {
                Long id = ServiceFactory.getInstance().getAccountService().addUser(user);
                resp.getWriter().println("Id: " + id);
            } catch (Exception ex) {
                resp.setStatus(HttpServletResponse.SC_BAD_REQUEST);
                System.out.println(ex.getMessage());
                out.println(ex.getMessage());
            }
        }
    }
}