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

#include <boost/lexical_cast.hpp>
#include <boost/optional.hpp>
#include <Swiften/Base/DateTime.h>
#include <Swiften/Parser/IQParser.h>
#include <Swiften/Parser/MessageParser.h>
#include <Swiften/Parser/PayloadParserFactory.h>
#include <Swiften/Parser/PayloadParserFactoryCollection.h>
#include <Swiften/Parser/PayloadParsers/DelayParser.h>
#include <Swiften/Parser/PayloadParsers/ForwardedParser.h>
#include <Swiften/Parser/PresenceParser.h>


using namespace Swift;

ForwardedParser::ForwardedParser(PayloadParserFactoryCollection* factories) : factories_(factories), level_(TopLevel) {
}

void ForwardedParser::handleStartElement(const std::string& element, const std::string& ns, const AttributeMap& attributes) {
	if (level_ == PayloadLevel) {
		if (element == "iq" && ns == "jabber:client") { /* begin parsing a nested stanza? */
			childParser_ = boost::dynamic_pointer_cast<StanzaParser>(boost::make_shared<IQParser>(factories_));
		} else if (element == "message" && ns == "jabber:client") {
			childParser_ = boost::dynamic_pointer_cast<StanzaParser>(boost::make_shared<MessageParser>(factories_));
		} else if (element == "presence" && ns == "jabber:client") {
			childParser_ = boost::dynamic_pointer_cast<StanzaParser>(boost::make_shared<PresenceParser>(factories_));
		} else if (element == "delay" && ns == "urn:xmpp:delay") { /* nested delay payload */
			delayParser_ = boost::make_shared<DelayParser>();
		}
	}
	if (childParser_) { /* parsing a nested stanza? */
		childParser_->handleStartElement(element, ns, attributes);
	}
	if (delayParser_) { /* parsing a nested delay payload? */
		delayParser_->handleStartElement(element, ns, attributes);
	}
	++level_;
}

void ForwardedParser::handleEndElement(const std::string& element, const std::string& ns) {
	--level_;
	if (childParser_ && level_ >= PayloadLevel) {
		childParser_->handleEndElement(element, ns);
	}
	if (childParser_ && level_ == PayloadLevel) {
		/* done parsing nested stanza */
		getPayloadInternal()->setStanza(childParser_->getStanza());
		childParser_.reset();
	}
	if (delayParser_ && level_ >= PayloadLevel) {
		delayParser_->handleEndElement(element, ns);
	}
	if (delayParser_ && level_ == PayloadLevel) {
		/* done parsing nested delay payload */
		getPayloadInternal()->setDelay(boost::dynamic_pointer_cast<Delay>(delayParser_->getPayload()));
		delayParser_.reset();
	}
}

void ForwardedParser::handleCharacterData(const std::string& data) {
	if (childParser_) {
		childParser_->handleCharacterData(data);
	}
	if (delayParser_) {
		delayParser_->handleCharacterData(data);
	}
}