/*
 * 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.service.impl;

import java.io.File;
import java.io.InputStream;
import java.security.cert.X509Certificate;

import org.linagora.linshare.core.business.service.SignatureBusinessService;
import org.linagora.linshare.core.domain.constants.LogAction;
import org.linagora.linshare.core.domain.entities.Account;
import org.linagora.linshare.core.domain.entities.Document;
import org.linagora.linshare.core.domain.entities.FileLogEntry;
import org.linagora.linshare.core.domain.entities.Signature;
import org.linagora.linshare.core.exception.BusinessException;
import org.linagora.linshare.core.service.LogEntryService;
import org.linagora.linshare.core.service.SignatureService;
import org.linagora.linshare.core.utils.DocumentUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class SignatureServiceImpl implements SignatureService {
	
	private final SignatureBusinessService signatureBusinessService;
	private final LogEntryService logEntryService;
	private static final Logger logger = LoggerFactory.getLogger(SignatureServiceImpl.class);
	
	
	public SignatureServiceImpl(SignatureBusinessService signatureBusinessService, LogEntryService logEntryService) {
		super();
		this.signatureBusinessService = signatureBusinessService;
		this.logEntryService = logEntryService;
	}
	
	
	@Override
	public Signature findByUuid(String signatureUuid) {
		return signatureBusinessService.findByUuid(signatureUuid);
	}


	@Override
	public Signature createSignature(Account actor, Document document, InputStream stream, String fileName, X509Certificate signerCertificate) throws BusinessException {
		DocumentUtils util = new DocumentUtils();
		File tempFile =  util.getTempFile(stream, fileName);
		Long size = tempFile.length();
		Signature signature = null;
		try {
			String mimeType = "text/xml";
			signature = signatureBusinessService.createSignature(actor, document, tempFile, size, fileName, mimeType, signerCertificate);
			FileLogEntry logEntry = new FileLogEntry(actor, LogAction.FILE_SIGN, "signature of a file", fileName, document.getSize(), mimeType);
			logEntryService.create(logEntry);
		} finally {
			try{
				logger.debug("deleting temp file : " + tempFile.getName());
				tempFile.delete(); // remove the temporary file
			} catch (Exception e) {
				logger.error("can not delete temp file : " + e.getMessage());
			}
		}
		return signature;
	}
	

	@Override
	public void deleteSignature(Signature signature) throws BusinessException {
		signatureBusinessService.deleteSignature(signature);
	}

	
	@Override
	public InputStream getDocumentStream(Signature signature) {
		return signatureBusinessService.getDocumentStream(signature);
	}
}