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/*
 * Copyright (c) 2014-2016 Isode Limited.
 * All rights reserved.
 * See the COPYING file for more information.
 */

#include <Swiften/Parser/PayloadParsers/MAMQueryParser.h>

#include <boost/lexical_cast.hpp>
#include <boost/optional.hpp>

#include <Swiften/Base/DateTime.h>
#include <Swiften/Parser/PayloadParsers/FormParser.h>
#include <Swiften/Parser/PayloadParsers/ResultSetParser.h>

using namespace Swift;

MAMQueryParser::MAMQueryParser() : level_(TopLevel) {
}

void MAMQueryParser::handleStartElement(const std::string& element, const std::string& ns, const AttributeMap& attributes) {
    if (level_ == TopLevel) {
        boost::optional<std::string> attributeValue;
        if ((attributeValue = attributes.getAttributeValue("queryid"))) {
            getPayloadInternal()->setQueryID(*attributeValue);
        }
        if ((attributeValue = attributes.getAttributeValue("node"))) {
            getPayloadInternal()->setNode(*attributeValue);
        }
    } else if (level_ == PayloadLevel) {
        if (element == "x" && ns == "jabber:x:data") {
            formParser_ = std::make_shared<FormParser>();
        } else if (element == "set" && ns == "http://jabber.org/protocol/rsm") {
            resultSetParser_ = std::make_shared<ResultSetParser>();
        }
    }

    if (formParser_) { /* parsing a nested Form */
        formParser_->handleStartElement(element, ns, attributes);
    }

    if (resultSetParser_) { /* parsing a nested ResultSet */
        resultSetParser_->handleStartElement(element, ns, attributes);
    }

    ++level_;
}

void MAMQueryParser::handleEndElement(const std::string& element, const std::string& ns) {
    --level_;

    if (formParser_ && level_ >= PayloadLevel) {
        formParser_->handleEndElement(element, ns);
    }
    if (formParser_ && level_ == PayloadLevel) {
        /* done parsing nested Form */
        getPayloadInternal()->setForm(std::dynamic_pointer_cast<Form>(formParser_->getPayload()));
        formParser_.reset();
    }

    if (resultSetParser_ && level_ >= PayloadLevel) {
        resultSetParser_->handleEndElement(element, ns);
    }
    if (resultSetParser_ && level_ == PayloadLevel) {
        /* done parsing nested ResultSet */
        getPayloadInternal()->setResultSet(std::dynamic_pointer_cast<ResultSet>(resultSetParser_->getPayload()));
        resultSetParser_.reset();
    }
}

void MAMQueryParser::handleCharacterData(const std::string& data) {
    if (formParser_) {
        formParser_->handleCharacterData(data);
    }
    if (resultSetParser_) {
        resultSetParser_->handleCharacterData(data);
    }
}