package de.thedevstack.conversationsplus.xmpp.iqversion;

import android.os.Build;

import de.thedevstack.conversationsplus.ConversationsPlusApplication;
import de.thedevstack.conversationsplus.ConversationsPlusPreferences;
import de.thedevstack.conversationsplus.xml.Element;
import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacket;
import de.thedevstack.conversationsplus.xmpp.stanzas.IqPacketGenerator;

/**
 * Generates the IQ Packets for Software Version
 * as defined in XEP-0092.
 * @see <a href="http://xmpp.org/extensions/xep-0092.html">http://xmpp.org/extensions/xep-0092.html</a>
 */
public final class IqVersionPacketGenerator {

    /**
     * Generates the IqPacket to reply the software version.
     * <pre>
     * <iq from='juliet@capulet.com/balcony'
     *     type='result'
     *     to='romeo@montague.net/orchard'
     *     id='version_1'>
     *   <query xmlns='jabber:iq:version'>
     *     <name>Exodus</name>
     *     <version>0.7.0.4</version>
     *     <os>Windows-XP 5.01.2600</os>
     *   </query>
     * </iq>
     * </pre>
     * @param packet the packet to respond to
     * @return
     */
    public static IqPacket generateResponse(IqPacket packet) {
        IqPacket responsePacket = IqPacketGenerator.generateIqResultResponse(packet);

        Element query = responsePacket.addChild(IqVersion.ELEMENT, IqVersion.NAMESPACE);
        query.addChild("name").setContent(ConversationsPlusApplication.getName());
        query.addChild("version").setContent(ConversationsPlusApplication.getVersion());
        if (ConversationsPlusPreferences.sendOsInformation()) {
            query.addChild("os").setContent("Android " + Build.VERSION.RELEASE);
        }

        return responsePacket;
    }

    private IqVersionPacketGenerator() {}
}