// --- BEGIN COPYRIGHT BLOCK ---
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; version 2 of the License.
//
// 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program; if not, write to the Free Software Foundation, Inc.,
// 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
//
// (C) 2007 Red Hat, Inc.
// All rights reserved.
// --- END COPYRIGHT BLOCK ---
package com.netscape.cmsutil.ocsp;

import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

import org.mozilla.jss.asn1.ASN1Template;
import org.mozilla.jss.asn1.ASN1Value;
import org.mozilla.jss.asn1.InvalidBERException;
import org.mozilla.jss.asn1.SEQUENCE;
import org.mozilla.jss.asn1.Tag;
import org.mozilla.jss.pkix.primitive.Name;

/**
 * RFC 2560:
 *
 * <pre>
 * ResponderID ::= CHOICE {
 *    byName               [1] EXPLICIT Name,
 *    byKey                [2] EXPLICIT KeyHash }
 * </pre>
 *
 * @version $Revision$ $Date$
 */
public class NameID implements ResponderID {
    private Name _name = null;
    private static final Tag TAG = SEQUENCE.TAG;

    public NameID(Name n) {
        _name = n;
    }

    @Override
    public Tag getTag() {
        return Tag.get(1);
    }

    @Override
    public void encode(Tag tag, OutputStream os) throws IOException {
        _name.encode(os);
    }

    @Override
    public void encode(OutputStream os) throws IOException {
        _name.encode(os);
    }

    public Name getName() {
        return _name;
    }

    private static final Template templateInstance = new Template();

    public static Template getTemplate() {
        return templateInstance;
    }

    /**
     * A Template for decoding <code>ResponseBytes</code>.
     */
    public static class Template implements ASN1Template {

        private SEQUENCE.Template seqt;

        public Template() {
            seqt = new SEQUENCE.Template();
            // seqt.addElement(new EXPLICIT.Template(
            //   new Tag (1), new Name.Template()) );
            seqt.addElement(new Name.Template());

        }

        @Override
        public boolean tagMatch(Tag tag) {
            return TAG.equals(tag);
        }

        @Override
        public ASN1Value decode(InputStream istream)
                        throws InvalidBERException, IOException {
            return decode(TAG, istream);
        }

        @Override
        public ASN1Value decode(Tag implicitTag, InputStream istream)
                        throws InvalidBERException, IOException {
            SEQUENCE seq = (SEQUENCE) seqt.decode(implicitTag,
                                istream);

            // EXPLICIT e_name = (EXPLICIT) seq.elementAt(0);
            Name name = (Name) seq.elementAt(0);
            return new NameID(name);
        }
    }
}
