oglimmer/lunchy

package de.oglimmer.lunchy.rest.resources.helper;

import java.util.Calendar;

import javax.servlet.http.HttpServletRequest;

import de.oglimmer.lunchy.database.dao.CommunityDao;
import de.oglimmer.lunchy.database.dao.UserDao;
import de.oglimmer.lunchy.database.generated.tables.records.UsersRecord;
import de.oglimmer.lunchy.rest.SessionProvider;
import de.oglimmer.lunchy.rest.dto.LoginResponse;
import de.oglimmer.lunchy.services.CommunityService;
import de.oglimmer.lunchy.services.DateCalcService;
import lombok.Getter;

public class LoginCheck {


    private SessionProvider sessionProvider = SessionProvider.INSTANCE;

    private HttpServletRequest request;
    private String longTimeToken;

    public LoginCheck(HttpServletRequest request, String longTimeToken) {
        this.request = request;
        this.longTimeToken = longTimeToken;

    }

    public LoginResponse check() {
        SessionCheck sessionCheck = new SessionCheck();
        if (sessionCheck.isValid()) {
            return getSuccessResponse(sessionCheck.getUser());
        }
        LongTimeTokenCheck lttCheck = new LongTimeTokenCheck();
        if (lttCheck.isValid()) {
            return getSuccessResponse(lttCheck.getUser());
        }
        return getNoSuccessResponse();
    }

    private LoginResponse getNoSuccessResponse() {
        LoginResponse noSuccessResp = new LoginResponse();
        setCompanyName(noSuccessResp);
        return noSuccessResp;
    }

    public LoginResponse getSuccessResponse(UsersRecord user) {
        LoginResponse resp = sessionProvider.createSession(user, request.getSession(true), false);
        setCompanyName(resp);
        return resp;
    }

    private void setCompanyName(LoginResponse resp) {
        resp.setCompanyName(CommunityDao.INSTANCE.getById(CommunityService.get(request)).getName());
    }

    class SessionCheck {
        @Getter
        private UsersRecord user;

        public boolean isValid() {
            loadUserFromSessionAttr();
            return user != null;
        }

        private void loadUserFromSessionAttr() {
            user = sessionProvider.getLoggedInUser(request, CommunityService.get(request));
        }
    }

    class LongTimeTokenCheck {
        @Getter
        private UsersRecord user;

        public boolean isValid() {
            if (isLongTimeTokenPresent()) {
                tryToLoadUserByToken();
                if (userFound()) {
                    if (isLongTimeTokenYoungerThan3Month()) {
                        return true;
                    } else {
                        sessionProvider.removeToken(user);
                    }
                }
            }
            return false;
        }

        private boolean isLongTimeTokenYoungerThan3Month() {
            return DateCalcService.youngerThan(user.getLongTimeTimestamp(), Calendar.MONTH, 3);
        }

        private boolean userFound() {
            return user != null;
        }

        private boolean isLongTimeTokenPresent() {
            return longTimeToken != null;
        }

        private void tryToLoadUserByToken() {
            user = UserDao.INSTANCE.getByLongTimeToken(longTimeToken, CommunityService.get(request));
        }

    }

    
}