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#include "Swiften/Serializer/StreamFeaturesSerializer.h"

#include "Swiften/Serializer/XML/XMLElement.h"
#include "Swiften/Serializer/XML/XMLTextNode.h"
#include "Swiften/Base/foreach.h"

namespace Swift {

StreamFeaturesSerializer::StreamFeaturesSerializer() {
}

String StreamFeaturesSerializer::serialize(boost::shared_ptr<Element> element)  const {
	boost::shared_ptr<StreamFeatures> streamFeatures(boost::dynamic_pointer_cast<StreamFeatures>(element));

	XMLElement streamFeaturesElement("stream:features");
	if (streamFeatures->hasStartTLS()) {
		streamFeaturesElement.addNode(boost::shared_ptr<XMLElement>(new XMLElement("starttls", "urn:ietf:params:xml:ns:xmpp-tls")));
	}
	if (!streamFeatures->getCompressionMethods().empty()) {
		boost::shared_ptr<XMLElement> compressionElement(new XMLElement("compression", "http://jabber.org/features/compress"));
		foreach(const String& method, streamFeatures->getCompressionMethods()) {
			boost::shared_ptr<XMLElement> methodElement(new XMLElement("method"));
			methodElement->addNode(boost::shared_ptr<XMLTextNode>(new XMLTextNode(method)));
			compressionElement->addNode(methodElement);
		}
		streamFeaturesElement.addNode(compressionElement);
	}
	if (!streamFeatures->getAuthenticationMechanisms().empty()) {
		boost::shared_ptr<XMLElement> mechanismsElement(new XMLElement("mechanisms", "urn:ietf:params:xml:ns:xmpp-sasl"));
		foreach(const String& mechanism, streamFeatures->getAuthenticationMechanisms()) {
			boost::shared_ptr<XMLElement> mechanismElement(new XMLElement("mechanism"));
			mechanismElement->addNode(boost::shared_ptr<XMLTextNode>(new XMLTextNode(mechanism)));
			mechanismsElement->addNode(mechanismElement);
		}
		streamFeaturesElement.addNode(mechanismsElement);
	}
	if (streamFeatures->hasResourceBind()) {
		streamFeaturesElement.addNode(boost::shared_ptr<XMLElement>(new XMLElement("bind", "urn:ietf:params:xml:ns:xmpp-bind")));
	}
	if (streamFeatures->hasSession()) {
		streamFeaturesElement.addNode(boost::shared_ptr<XMLElement>(new XMLElement("session", "urn:ietf:params:xml:ns:xmpp-session")));
	}
	return streamFeaturesElement.serialize();
}

}