package net.sourceforge.fenixedu.domain;

import net.sourceforge.fenixedu.domain.exceptions.DomainException;

import org.apache.commons.codec.digest.DigestUtils;

public class LoginRequest extends LoginRequest_Base {

	public LoginRequest(User user) {
		if (user.getLoginRequest() != null) {
			throw new DomainException("error.user.already.has.loginRequest");
		}
	
		setRootDomainObject(RootDomainObject.getInstance());
		super.setUser(user);
		super.setHash(generateHash());
	}

	public void delete() {
		super.setUser(null);
		removeRootDomainObject();
		super.deleteDomainObject();
	}

	private String generateHash() {
		String seed = System.currentTimeMillis() + " " + this.getUser().getIdInternal();
		return DigestUtils.md5Hex(seed);
	}

	@Override
	public void setHash(String hash) {
		throw new DomainException("error.cannot.change.hash");
	}

	@Override
	public void setUser(User user) {
		throw new DomainException("error.cannot.change.user");
	}

	public static LoginRequest getLoginRequestWithHash(String hash) {
		for (LoginRequest request : RootDomainObject.getInstance().getLoginRequests()) {
			if (request.getHash().equals(hash)) {
				return request;
			}
		}
		return null;
	}

}