/**
 * All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.jivesoftware.smackx.pubsub;

import org.jivesoftware.smackx.pubsub.util.XmlUtils;

/**
 * A packet extension representing the <b>options</b> element.
 * 
 * @author Robin Collier
 */
public class OptionsExtension extends NodeExtension {
	protected String jid;
	protected String id;

	public OptionsExtension(String subscriptionJid) {
		this(subscriptionJid, null, null);
	}

	public OptionsExtension(String subscriptionJid, String nodeId) {
		this(subscriptionJid, nodeId, null);
	}

	public OptionsExtension(String jid, String nodeId, String subscriptionId) {
		super(PubSubElementType.OPTIONS, nodeId);
		this.jid = jid;
		id = subscriptionId;
	}

	public String getId() {
		return id;
	}

	public String getJid() {
		return jid;
	}

	@Override
	public String toXML() {
		final StringBuilder builder = new StringBuilder("<");
		builder.append(getElementName());
		XmlUtils.appendAttribute(builder, "jid", jid);

		if (getNode() != null) {
			XmlUtils.appendAttribute(builder, "node", getNode());
		}

		if (id != null) {
			XmlUtils.appendAttribute(builder, "subid", id);
		}

		builder.append("/>");
		return builder.toString();
	}

}