pl.adrian.pieper.biuwaw.services.UsersManager.java Source code

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Here is the source code for pl.adrian.pieper.biuwaw.services.UsersManager.java

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package pl.adrian.pieper.biuwaw.services;

import com.vaadin.server.VaadinSession;
import java.util.HashMap;
import java.util.Map;
import javax.security.auth.login.LoginException;
import pl.adrian.pieper.biuwaw.domain.Guest;
import pl.adrian.pieper.biuwaw.domain.User;

/**
 *
 * @author Adi
 */
public class UsersManager {
    private Map<String, User> users = new HashMap<>();

    private final static UsersManager instance = new UsersManager();

    public boolean isUserOnline() {
        return getUser() != null;
    }

    public User getUser() {
        return VaadinSession.getCurrent().getAttribute(User.class);
    }

    public static UsersManager getInstance() {
        return instance;
    }

    static {
        instance.createFor("login");
        instance.createFor("admin");
    }

    public User getFor(Guest guest) {
        final String email = guest.getEmail();

        if (users.containsKey(email))
            return users.get(email);
        return createFor(email);
    }

    public User login(String email) throws LoginException {
        if (users.containsKey(email)) {
            User user = users.get(email);
            VaadinSession.getCurrent().setAttribute(User.class, user);
            return user;
        }
        throw new LoginException("Uytkownik nie istnieje");
    }

    public User register(String email) throws LoginException {
        if (users.containsKey(email)) {
            throw new LoginException("Uytkownik ju istnieje");
        }
        return createFor(email);
    }

    private User createFor(String email) {

        User user = new User(email);
        users.put(email, user);
        return user;
    }
}