package de.thedevstack.conversationsplus.xmpp.disco;

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

/**
 */
public class ServiceDiscoveryIqPacketGenerator {

    public static IqPacket generateRequest(Jid jid) {
        IqPacket request = IqPacketGenerator.generateIqGetPacket();
        request.setTo(jid);
        request.query(ServiceDiscovery.NAMESPACE);

        return request;
    }

    public static IqPacket generateResponse(IqPacket packet) {
        IqPacket responsePacket = IqPacketGenerator.generateIqResultPacket();
        responsePacket.setTo(packet.getFrom());
        responsePacket.setId(packet.getId());

        Element query = responsePacket.addChild(ServiceDiscovery.ELEMENT, ServiceDiscovery.NAMESPACE);
        query.setAttribute("node", packet.query().getAttribute("node"));
        final Element identity = query.addChild("identity");
        identity.setAttribute("category", "client");
        identity.setAttribute("type", FeatureRegistry.IDENTITY_TYPE);
        identity.setAttribute("name", ConversationsPlusApplication.getNameAndVersion());
        for (final String feature : FeatureRegistry.getFeatures()) {
            query.addChild("feature").setAttribute("var", feature);
        }

        return responsePacket;
    }
}