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/*
 * Copyright (c) 2010-2015 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swiften/Parser/StreamFeaturesParser.h>

namespace Swift {

StreamFeaturesParser::StreamFeaturesParser() : GenericElementParser<StreamFeatures>(), currentDepth_(0), inMechanisms_(false), inMechanism_(false), inAuthenticationHostname_(false), inCompression_(false), inCompressionMethod_(false) {
}

void StreamFeaturesParser::handleStartElement(const std::string& element, const std::string& ns, const AttributeMap&) {
    if (currentDepth_ == 1) {
        if (element == "starttls" && ns == "urn:ietf:params:xml:ns:xmpp-tls") {
            getElementGeneric()->setHasStartTLS();
        }
        else if (element == "session" && ns == "urn:ietf:params:xml:ns:xmpp-session") {
            getElementGeneric()->setHasSession();
        }
        else if (element == "bind" && ns == "urn:ietf:params:xml:ns:xmpp-bind") {
            getElementGeneric()->setHasResourceBind();
        }
        else if (element == "sm" && ns == "urn:xmpp:sm:2") {
            getElementGeneric()->setHasStreamManagement();
        }
        else if (element == "mechanisms" && ns == "urn:ietf:params:xml:ns:xmpp-sasl") {
            inMechanisms_ = true;
        }
        else if (element == "compression" && ns == "http://jabber.org/features/compress") {
            inCompression_ = true;
        }
        else if (element == "ver" && ns == "urn:xmpp:features:rosterver") {
            getElementGeneric()->setHasRosterVersioning();
        }
    }
    else if (currentDepth_ == 2) {
        if (inCompression_ && element == "method") {
            inCompressionMethod_ = true;
            currentText_ = "";
        }
        else if (inMechanisms_ && element == "mechanism") {
            inMechanism_ = true;
            currentText_ = "";
        }
        else if (inMechanisms_ && element == "hostname" && ns == "urn:xmpp:domain-based-name:1") {
            inAuthenticationHostname_ = true;
            currentText_ = "";
        }

    }
    ++currentDepth_;
}

void StreamFeaturesParser::handleEndElement(const std::string&, const std::string&) {
    --currentDepth_;
    if (currentDepth_ == 1) {
        inCompression_ = false;
        inMechanisms_ = false;
    }
    else if (currentDepth_ == 2) {
        if (inCompressionMethod_) {
            getElementGeneric()->addCompressionMethod(currentText_);
            inCompressionMethod_ = false;
        }
        else if (inMechanism_) {
            getElementGeneric()->addAuthenticationMechanism(currentText_);
            inMechanism_ = false;
        }
        else if (inAuthenticationHostname_) {
            getElementGeneric()->setAuthenticationHostname(currentText_);
            inAuthenticationHostname_ = false;
        }
    }
}

void StreamFeaturesParser::handleCharacterData(const std::string& data) {
    currentText_ += data;
}

}