/*
 *
 * This file is part of the iText (R) project.
    Copyright (c) 1998-2017 iText Group NV
 * Authors: Bruno Lowagie, Paulo Soares, et al.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License version 3
 * as published by the Free Software Foundation with the addition of the
 * following permission added to Section 15 as permitted in Section 7(a):
 * FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
 * ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
 * OF THIRD PARTY RIGHTS
 *
 * 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
 * along with this program; if not, see http://www.gnu.org/licenses or write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
 * http://itextpdf.com/terms-of-use/
 *
 * The interactive user interfaces in modified source and object code versions
 * of this program must display Appropriate Legal Notices, as required under
 * Section 5 of the GNU Affero General Public License.
 *
 * In accordance with Section 7(b) of the GNU Affero General Public License,
 * a covered work must retain the producer line in every PDF that is created
 * or manipulated using iText.
 *
 * You can be released from the requirements of the license by purchasing
 * a commercial license. Buying such a license is mandatory as soon as you
 * develop commercial activities involving the iText software without
 * disclosing the source code of your own applications.
 * These activities include: offering paid services to customers as an ASP,
 * serving PDFs on the fly in a web application, shipping iText with a closed
 * source product.
 *
 * For more information, please contact iText Software Corp. at this
 * address: sales@itextpdf.com
 */
package com.itextpdf.text.pdf;

import com.itextpdf.text.pdf.security.PdfSignatureBuildProperties;

/**
 * Implements the signature dictionary.
 * 
 * @author Paulo Soares
 */
public class PdfSignature extends PdfDictionary {

	/** Creates new PdfSignature */
	public PdfSignature(PdfName filter, PdfName subFilter) {
		super(PdfName.SIG);
		put(PdfName.FILTER, filter);
		put(PdfName.SUBFILTER, subFilter);
	}

	public void setByteRange(int range[]) {
		PdfArray array = new PdfArray();
		for (int k = 0; k < range.length; ++k)
			array.add(new PdfNumber(range[k]));
		put(PdfName.BYTERANGE, array);
	}

	public void setContents(byte contents[]) {
		put(PdfName.CONTENTS, new PdfString(contents).setHexWriting(true));
	}

	public void setCert(byte cert[]) {
		put(PdfName.CERT, new PdfString(cert));
	}

	public void setName(String name) {
		put(PdfName.NAME, new PdfString(name, PdfObject.TEXT_UNICODE));
	}

	public void setDate(PdfDate date) {
		put(PdfName.M, date);
	}

	public void setLocation(String name) {
		put(PdfName.LOCATION, new PdfString(name, PdfObject.TEXT_UNICODE));
	}

	public void setReason(String name) {
		put(PdfName.REASON, new PdfString(name, PdfObject.TEXT_UNICODE));
	}

	/**
	 * Sets the signature creator name in the
	 * {@link PdfSignatureBuildProperties} dictionary.
	 * 
	 * @param name
	 */
	public void setSignatureCreator(String name) {
		if (name != null) {
			getPdfSignatureBuildProperties().setSignatureCreator(name);
		}
	}

	/**
	 * Gets the {@link PdfSignatureBuildProperties} instance if it exists, if
	 * not it adds a new one and returns this.
	 * 
	 * @return {@link PdfSignatureBuildProperties}
	 */
	PdfSignatureBuildProperties getPdfSignatureBuildProperties() {
		PdfSignatureBuildProperties buildPropDic = (PdfSignatureBuildProperties) getAsDict(PdfName.PROP_BUILD);
		if (buildPropDic == null) {
			buildPropDic = new PdfSignatureBuildProperties();
			put(PdfName.PROP_BUILD, buildPropDic);
		}
		return buildPropDic;
	}

	public void setContact(String name) {
		put(PdfName.CONTACTINFO, new PdfString(name, PdfObject.TEXT_UNICODE));
	}
}