/*
 * Jitsi, the OpenSource Java VoIP and Instant Messaging client.
 *
 * Copyright @ 2015 Atlassian Pty Ltd
 *
 * 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 net.java.sip.communicator.impl.protocol.jabber.extensions.mailnotification;

import net.java.sip.communicator.util.*;

import org.jivesoftware.smack.packet.*;

/**
 * A straightforward <tt>IQ</tt> extension. The <tt>QueryNotify</tt> object is
 * used to create queries for the Gmail mail server. It creates a simple
 * <tt>IQ</tt> packet which represents the query.
 *
 * @author Matthieu Helleringer
 * @author Alain Knaebel
 * @author Emil Ivov
 */
public class MailboxQueryIQ extends IQ
{
    /**
     * Logger for this class
     */
    private static final Logger logger =
        Logger.getLogger(MailboxQueryIQ.class);

    /**
     * The name space for new mail notification packets.
     */
    public static final String NAMESPACE = "google:mail:notify";

    /**
     * The value of the newer-than-time attribute in this query;
     */
    private long newerThanTime = -1;

    /**
     * The value of the newer-than-tid attribute in this query;
     */
    private long newerThanTid = -1;

    /**
     * Returns the sub-element XML section of the IQ packet.
     *
     * @return the child element section of the IQ XML. String
     */
    @Override
    public String getChildElementXML()
    {
        if (logger.isDebugEnabled())
            logger.debug("QueryNotify.getChildElementXML usage");

        StringBuffer xml = new StringBuffer(
                        "<query xmlns='google:mail:notify'");

        if(getNewerThanTime() != -1)
            xml.append("newer-than-time='")
                .append(getNewerThanTime()).append("'");

        if(getNewerThanTid() != -1)
            xml.append("newer-than-tid='")
                .append(getNewerThanTid()).append("'");

        xml.append("/>");

        return xml.toString();
    }

    /**
     * Sets the value of the "newer-than-time" attribute. The value indicates
     * the time of the oldest unread email to retrieve, in milliseconds since
     * the UNIX epoch (00:00:00 UTC, January 1 1970). When querying for the
     * first time, you should omit this attribute (i.e. not call this method or
     * call it with a <tt>-1</tt> value) to return a set of the most recent
     * unread mail. The sever will return only unread mail received after this
     * time. If using this attribute, you should also use newer-than-tid for
     * best results.
     *
     * @param newerThanTime the time of the oldest unread email to retrieve or
     * <tt>-1</tt> if the newer-than-time attribute should be omitted.
     */
    public void setNewerThanTime(long newerThanTime)
    {
        this.newerThanTime = newerThanTime;
    }

    /**
     * Returns the value of the "newer-than-time" attribute. The value indicates
     * the time of the oldest unread email to retrieve, in milliseconds since
     * the UNIX epoch (00:00:00 UTC, January 1 1970). When querying for the
     * first time, you should omit this attribute (i.e. not call this method or
     * call it with a <tt>-1</tt> value) to return a set of the most recent
     * unread mail. The sever will return only unread mail received after this
     * time. If using this attribute, you should also use newer-than-tid for
     * best results.
     *
     * @return the time of the oldest unread email to retrieve or <tt>-1</tt> if
     * the attribute is to be omitted.
     */
    public long getNewerThanTime()
    {
        return this.newerThanTime;
    }

    /**
     * Sets the value of the "newer-than-tid" attribute. The value indicates
     * the highest thread number of messages to return, where higher numbers are
     * more recent email threads. The server will return only threads newer than
     * that specified by this attribute. If using this attribute, you should
     * also use newer-than-time for best results. When querying for the first
     * time, you should omit this value.
     *
     * @param newerThanTid the time of the oldest unread email to retrieve or
     * <tt>-1</tt> if the newer-than-time attribute should be omitted.
     */
    public void setNewerThanTid(long newerThanTid)
    {
        this.newerThanTid = newerThanTid;
    }

    /**
     * Returns the value of the "newer-than-tid" attribute. The value indicates
     * the highest thread number of messages to return, where higher numbers are
     * more recent email threads. The server will return only threads newer than
     * that specified by this attribute. If using this attribute, you should
     * also use newer-than-time for best results. When querying for the first
     * time, you should omit this value.
     *
     * @return the time of the oldest unread email to retrieve or <tt>-1</tt> if
     * the newer-than-time attribute is to be omitted.
     */
    public long getNewerThanTid()
    {
        return this.newerThanTid;
    }







}