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/*
 * Copyright (c) 2010-2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swiften/Serializer/PayloadSerializers/IBBSerializer.h>

#include <cassert>
#include <memory>

#include <boost/lexical_cast.hpp>

#include <Swiften/Serializer/XML/XMLElement.h>
#include <Swiften/Serializer/XML/XMLTextNode.h>
#include <Swiften/StringCodecs/Base64.h>

namespace Swift {

IBBSerializer::IBBSerializer() {
}

std::string IBBSerializer::serializePayload(std::shared_ptr<IBB> ibb) const {
    switch(ibb->getAction()) {
        case IBB::Data: {
            XMLElement ibbElement("data", "http://jabber.org/protocol/ibb");
            ibbElement.setAttribute("sid", ibb->getStreamID());
            if (ibb->getSequenceNumber() >= 0) {
                ibbElement.setAttribute("seq", boost::lexical_cast<std::string>(ibb->getSequenceNumber()));
            }
            ibbElement.addNode(std::make_shared<XMLTextNode>(Base64::encode(ibb->getData())));
            return ibbElement.serialize();
        }
        case IBB::Open: {
            XMLElement ibbElement("open", "http://jabber.org/protocol/ibb");
            ibbElement.setAttribute("sid", ibb->getStreamID());
            switch (ibb->getStanzaType()) {
                case IBB::IQStanza: ibbElement.setAttribute("stanza", "iq"); break;
                case IBB::MessageStanza: ibbElement.setAttribute("stanza", "message"); break;
            }
            assert(ibb->getBlockSize() > 0);
            ibbElement.setAttribute("block-size", boost::lexical_cast<std::string>(ibb->getBlockSize()));
            return ibbElement.serialize();
        }
        case IBB::Close: {
            XMLElement ibbElement("close", "http://jabber.org/protocol/ibb");
            ibbElement.setAttribute("sid", ibb->getStreamID());
            return ibbElement.serialize();
        }
    }
    assert(false);
    return "";
}

}