/**
 * 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.packet;

import java.util.Date;

import org.jivesoftware.smack.util.StringUtils;

/**
 * A decorator for the {@link DelayInformation} class to transparently support
 * both the new <b>Delay Delivery</b> specification <a href="http://xmpp.org/extensions/xep-0203.html">XEP-0203</a> and
 * the old one <a href="http://xmpp.org/extensions/xep-0091.html">XEP-0091</a>.
 * <p/>
 * Existing code can be backward compatible.
 *
 * @author Robin Collier
 */
public class DelayInfo extends DelayInformation {

    DelayInformation wrappedInfo;

    /**
     * Creates a new instance with given delay information.
     *
     * @param delay the delay information
     */
    public DelayInfo(DelayInformation delay) {
        super(delay.getStamp());
        wrappedInfo = delay;
    }

    @Override
    public String getFrom() {
        return wrappedInfo.getFrom();
    }

    @Override
    public String getReason() {
        return wrappedInfo.getReason();
    }

    @Override
    public Date getStamp() {
        return wrappedInfo.getStamp();
    }

    @Override
    public void setFrom(String from) {
        wrappedInfo.setFrom(from);
    }

    @Override
    public void setReason(String reason) {
        wrappedInfo.setReason(reason);
    }

    @Override
    public String getElementName() {
        return "delay";
    }

    @Override
    public String getNamespace() {
        return "urn:xmpp:delay";
    }

    @Override
    public String toXML() {
        StringBuilder buf = new StringBuilder();
        buf.append("<").append(getElementName()).append(" xmlns=\"").append(getNamespace()).append(
                "\"");
        buf.append(" stamp=\"");
        buf.append(StringUtils.formatXEP0082Date(getStamp()));
        buf.append("\"");
        if (getFrom() != null && getFrom().length() > 0) {
            buf.append(" from=\"").append(getFrom()).append("\"");
        }
        buf.append(">");
        if (getReason() != null && getReason().length() > 0) {
            buf.append(getReason());
        }
        buf.append("</").append(getElementName()).append(">");
        return buf.toString();
    }

}
