/*
 * LinShare is an open source filesharing software, part of the LinPKI software
 * suite, developed by Linagora.
 * 
 * Copyright (C) 2015 LINAGORA
 * 
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Affero General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option) any
 * later version, provided you comply with the Additional Terms applicable for
 * LinShare software by Linagora pursuant to Section 7 of the GNU Affero General
 * Public License, subsections (b), (c), and (e), pursuant to which you must
 * notably (i) retain the display of the “LinShare™” trademark/logo at the top
 * of the interface window, the display of the “You are using the Open Source
 * and free version of LinShare™, powered by Linagora © 2009–2015. Contribute to
 * Linshare R&D by subscribing to an Enterprise offer!” infobox and in the
 * e-mails sent with the Program, (ii) retain all hypertext links between
 * LinShare and linshare.org, between linagora.com and Linagora, and (iii)
 * refrain from infringing Linagora intellectual property rights over its
 * trademarks and commercial brands. Other Additional Terms apply, see
 * <http://www.linagora.com/licenses/> for more details.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Affero General Public License and
 * its applicable Additional Terms for LinShare along with this program. If not,
 * see <http://www.gnu.org/licenses/> for the GNU Affero General Public License
 * version 3 and <http://www.linagora.com/licenses/> for the Additional Terms
 * applicable to LinShare software.
 */
package org.linagora.linshare.core.business.service.impl;

import java.util.ArrayList;
import java.util.List;

import org.linagora.linshare.core.business.service.DomainBusinessService;
import org.linagora.linshare.core.domain.constants.DomainType;
import org.linagora.linshare.core.domain.entities.AbstractDomain;
import org.linagora.linshare.core.domain.entities.WelcomeMessages;
import org.linagora.linshare.core.exception.BusinessErrorCode;
import org.linagora.linshare.core.exception.BusinessException;
import org.linagora.linshare.core.repository.AbstractDomainRepository;

public class DomainBusinessServiceImpl implements DomainBusinessService {

	private AbstractDomainRepository repository;

	public DomainBusinessServiceImpl(AbstractDomainRepository repository) {
		this.repository = repository;
	}

	@Override
	public AbstractDomain getUniqueRootDomain() throws BusinessException {
		return repository.getUniqueRootDomain();
	}

	// TODO this method should never raise an exception.
	// This check should be in the service.
	@Override
	public AbstractDomain findById(String identifier) throws BusinessException {
		AbstractDomain domain = repository.findById(identifier);
		if (domain == null) {
			throw new BusinessException(BusinessErrorCode.DOMAIN_ID_NOT_FOUND,
					"The current domain does not exist : " + identifier);
		}
		return domain;
	}

	@Override
	public AbstractDomain find(String identifier) throws BusinessException {
		return repository.findById(identifier);
	}

	@Override
	public AbstractDomain update(AbstractDomain domain)
			throws BusinessException {
		return repository.update(domain);
	}

	@Override
	public List<AbstractDomain> loadRelativeDomains(WelcomeMessages welcomeMessage)
			throws BusinessException {
		return repository.loadDomainsForAWelcomeMessage(welcomeMessage);
	}

	@Override
	public long getTotalUsedSpace() throws BusinessException {
		return repository.getTotalUsedSpace();
	}

	@Override
	public AbstractDomain findGuestDomain(AbstractDomain domain)  throws BusinessException {
		if (domain.isRootDomain()) {
			return null;
		}
		// search GuestDomain among subdomains
		if (domain.getSubdomain() != null) {
			for (AbstractDomain d : domain.getSubdomain()) {
				if (d.getDomainType().equals(DomainType.GUESTDOMAIN)) {
					return d;
				}
			}
		}
		// search among siblings
		if (domain.getParentDomain() != null) {
			return findGuestDomain(domain.getParentDomain());
		}
		throw new BusinessException(BusinessErrorCode.GUEST_FORBIDDEN, "No guest domain found");
	}

	private List<AbstractDomain> getMyDomainRecursively(AbstractDomain domain) {
		List<AbstractDomain> domains = new ArrayList<AbstractDomain>();
		if (domain != null) {
			domains.add(domain);
			if (domain.getSubdomain() != null) {
				for (AbstractDomain d : domain.getSubdomain()) {
					domains.addAll(getMyDomainRecursively(d));
				}
			}
		}
		return domains;
	}

	@Override
	public List<String> getAllMyDomainIdentifiers(AbstractDomain domain) {
		List<String> domains = new ArrayList<String>();
		for (AbstractDomain abstractDomain : getMyDomainRecursively(domain)) {
			domains.add(abstractDomain.getIdentifier());
		}
		return domains;
	}

}
