package zall.page;

import zall.ZalleryServlet;
import zall.bean.User;
import zall.util.UserMessage.MessageType;
import zall.util.ZalleryEmail;
import zall.util.UserMessage;
import zutil.ObjectUtil;
import zutil.db.DBConnection;
import zutil.log.LogUtil;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.*;
import java.io.IOException;
import java.sql.SQLException;
import java.util.logging.Logger;

@WebServlet(RegisterServlet.URI)
public class RegisterServlet extends ZalleryServlet {
    private static Logger logger = LogUtil.getLogger();

    public static final String URI = "/register";
    private static final String JSP_FILE = "page_register.jsp";

    private static final String INPUT_ID_FIRST_NAME = "first-name";
    private static final String INPUT_ID_LAST_NAME = "last-name";
    private static final String INPUT_ID_EMAIL = "email";
    private static final String INPUT_ID_PASSWORD = "password";
    private static final String INPUT_ID_PASSWORD_REPEATE = "password-re";


    public void doGet(HttpServletRequest request, HttpServletResponse response, DBConnection db) throws ServletException, IOException, SQLException {
        UserMessage msgs = UserMessage.getUserMessage(request.getSession());

        // Verify email address
        String verifyEmailHash = request.getParameter("verifyemail");
        if(!ObjectUtil.isEmpty(verifyEmailHash)){
            User verfUser = User.load(db, Long.parseLong(request.getParameter("id")));
            if (verfUser != null) {
                if( verfUser.verifyEmail(request.getParameter("hash")) ){
                    ZalleryEmail.sendNewUserRegistrationToAdmin(verfUser, db);
                    verfUser.save(db);
                    msgs.add(MessageType.INFO, "Your email has been successfully verified.");
                    msgs.add(MessageType.WARNING, "The account is waiting account activation by an admin.");
                }
                else
                    msgs.add(MessageType.ERROR, "Email verification failed!");
            }
            else msgs.add(MessageType.ERROR, "Invalid user id: "+request.getParameter("id"));
        }

        include(JSP_FILE, request, response);
    }


    public void doPost(HttpServletRequest request, HttpServletResponse response, DBConnection db) throws SQLException, IOException, ServletException {
        UserMessage msgs = UserMessage.getUserMessage(request.getSession());

        /*
         * Check inputs
         */

        String firstName  = (String)request.getAttribute(INPUT_ID_FIRST_NAME);
        String lastName   = (String)request.getAttribute(INPUT_ID_LAST_NAME);
        String email      = (String)request.getAttribute(INPUT_ID_EMAIL);
        String password   = (String)request.getAttribute(INPUT_ID_PASSWORD);
        String passwordRe = (String)request.getAttribute(INPUT_ID_PASSWORD_REPEATE);

        if (firstName == null)
            msgs.add(MessageType.ERROR, lang.getString("error.not.found.first.name"));
        if (lastName == null)
            msgs.add(MessageType.ERROR, lang.getString("error.not.found.last.name"));
        if (email == null)
            msgs.add(MessageType.ERROR, lang.getString("error.not.found.email"));
        if (password == null)
            msgs.add(MessageType.ERROR, lang.getString("error.not.found.password"));
        if (passwordRe == null)
            msgs.add(MessageType.ERROR, lang.getString("error.not.found.password"));
        else if (passwordRe.equals(password))
            msgs.add(MessageType.ERROR, lang.getString("error.incorrect.password.matching"));

        if(User.load(db, (String)request.getAttribute(INPUT_ID_EMAIL)) != null){
            msgs.add(MessageType.ERROR, lang.getString("error.email_exists"));
            return;
        }

        /*
         * Create new user
         */

        User user = new User();
        user.setName(firstName + " " + lastName);
        user.setEmail(email);
        user.setPassword(password);
        user.save(db);
        ZalleryEmail.sendVerificationEmail( user );
        request.getSession().setAttribute("user", user);
        logger.info("Registered new user: "+user.getName()+".");
        msgs.add(MessageType.INFO,
                lang.getString("info.created.account") + " " + lang.getString("info.sent.email.verification"));

        forward("/login", request, response);
    }
}