/*
 * DSS - Digital Signature Services
 *
 * Copyright (C) 2013 European Commission, Directorate-General Internal Market and Services (DG MARKT), B-1049 Bruxelles/Brussel
 *
 * Developed by: 2013 ARHS Developments S.A. (rue Nicolas Bové 2B, L-1253 Luxembourg) http://www.arhs-developments.com
 *
 * This file is part of the "DSS - Digital Signature Services" project.
 *
 * "DSS - Digital Signature Services" is free software: you can redistribute it and/or modify it under the terms of
 * the GNU Lesser General Public License as published by the Free Software Foundation, either version 2.1 of the
 * License, or (at your option) any later version.
 *
 * DSS 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 Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License along with
 * "DSS - Digital Signature Services".  If not, see <http://www.gnu.org/licenses/>.
 */

package eu.europa.ec.markt.dss.signature;

import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import org.w3c.dom.Document;

import eu.europa.ec.markt.dss.DSSUtils;
import eu.europa.ec.markt.dss.DSSXMLUtils;
import eu.europa.ec.markt.dss.DigestAlgorithm;
import eu.europa.ec.markt.dss.exception.DSSException;

/**
 * AsicManifest file representation
 *
 * @version $Revision$ - $Date$
 */

public class AsicManifestDocument extends CommonDocument {

	private byte[] bytes;

	private String name;

	private String absolutePath;

	private String signatureUri;

	/**
	 * Creates dss document that retains the data in memory
	 *
	 * @param bytes array of bytes representing the document
	 * @param name  the file name if the data originates from a file
	 */
	public AsicManifestDocument(final byte[] bytes, final String name) {

		this.bytes = bytes;
		this.name = name;
		this.mimeType = MimeType.XML;
		final Document document = DSSXMLUtils.buildDOM(bytes);
		signatureUri = DSSXMLUtils.getValue(document, "/asic:ASiCManifest/asic:SigReference/@URI");
		if (DSSUtils.isBlank(signatureUri)) {
			throw new DSSException("The AsicManifest file must contains the URI of the related signature.");
		}
	}

	@Override
	public InputStream openStream() throws DSSException {

		final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bytes);
		return byteArrayInputStream;
	}

	@Override
	public String getName() {
		return name;
	}

	@Override
	public byte[] getBytes() throws DSSException {

		return bytes;
	}

	public void setName(final String name) {
		this.name = name;
	}

	public void setAbsolutePath(final String absolutePath) {
		this.absolutePath = absolutePath;
	}

	@Override
	public void save(final String filePath) {

		try {

			final FileOutputStream fos = new FileOutputStream(filePath);
			DSSUtils.write(getBytes(), fos);
			fos.close();
		} catch (FileNotFoundException e) {
			throw new DSSException(e);
		} catch (DSSException e) {
			throw new DSSException(e);
		} catch (IOException e) {
			throw new DSSException(e);
		}
	}

	@Override
	public String getAbsolutePath() {

		return absolutePath;
	}

	@Override
	public String getDigest(final DigestAlgorithm digestAlgorithm) {

		final byte[] digestBytes = DSSUtils.digest(digestAlgorithm, getBytes());
		final String base64Encode = DSSUtils.base64Encode(digestBytes);
		return base64Encode;
	}

	public String getSignatureUri() {
		return signatureUri;
	}
}