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/*
 * Copyright (c) 2012 Mateusz Piękos
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

#include <Swift/Controllers/WhiteboardManager.h>

#include <boost/bind.hpp>

#include <Swiften/Base/foreach.h>
#include <Swift/Controllers/UIEvents/RequestWhiteboardUIEvent.h>
#include <Swift/Controllers/UIEvents/AcceptWhiteboardSessionUIEvent.h>
#include <Swift/Controllers/UIEvents/CancelWhiteboardSessionUIEvent.h>
#include <Swift/Controllers/UIEvents/ShowWhiteboardUIEvent.h>
#include "Swiften/Client/NickResolver.h"
#include <Swiften/Client/StanzaChannel.h>
#include <Swiften/Whiteboard/WhiteboardSessionManager.h>

namespace Swift {
	typedef std::pair<JID, WhiteboardWindow*> JIDWhiteboardWindowPair;

	WhiteboardManager::WhiteboardManager(WhiteboardWindowFactory* whiteboardWindowFactory, UIEventStream* uiEventStream, NickResolver* nickResolver, WhiteboardSessionManager* whiteboardSessionManager) : whiteboardWindowFactory_(whiteboardWindowFactory), uiEventStream_(uiEventStream), nickResolver_(nickResolver), whiteboardSessionManager_(whiteboardSessionManager) {

#ifdef SWIFT_EXPERIMENTAL_WB
		whiteboardSessionManager_->onSessionRequest.connect(boost::bind(&WhiteboardManager::handleIncomingSession, this, _1));
#endif
		uiEventConnection_ = uiEventStream_->onUIEvent.connect(boost::bind(&WhiteboardManager::handleUIEvent, this, _1));
	}

	WhiteboardManager::~WhiteboardManager() {
		foreach (JIDWhiteboardWindowPair whiteboardWindowPair, whiteboardWindows_) {
			delete whiteboardWindowPair.second;
		}
	}

	WhiteboardWindow* WhiteboardManager::createNewWhiteboardWindow(const JID& contact, WhiteboardSession::ref session) {
		WhiteboardWindow *window = whiteboardWindowFactory_->createWhiteboardWindow(session);
		window->setName(nickResolver_->jidToNick(contact));
		whiteboardWindows_[contact.toBare()] = window;
		return window;
	}

	WhiteboardWindow* WhiteboardManager::findWhiteboardWindow(const JID& contact) {
		if (whiteboardWindows_.find(contact.toBare()) == whiteboardWindows_.end()) {
			return NULL;
		}
		return whiteboardWindows_[contact.toBare()];
	}

	void WhiteboardManager::handleUIEvent(boost::shared_ptr<UIEvent> event) {
		boost::shared_ptr<RequestWhiteboardUIEvent> requestWhiteboardEvent = boost::dynamic_pointer_cast<RequestWhiteboardUIEvent>(event);
		if (requestWhiteboardEvent) {
			requestSession(requestWhiteboardEvent->getContact());
		}
		boost::shared_ptr<AcceptWhiteboardSessionUIEvent> sessionAcceptEvent = boost::dynamic_pointer_cast<AcceptWhiteboardSessionUIEvent>(event);
		if (sessionAcceptEvent) {
			acceptSession(sessionAcceptEvent->getContact());
		}
		boost::shared_ptr<CancelWhiteboardSessionUIEvent> sessionCancelEvent = boost::dynamic_pointer_cast<CancelWhiteboardSessionUIEvent>(event);
		if (sessionCancelEvent) {
			cancelSession(sessionCancelEvent->getContact());
		}
		boost::shared_ptr<ShowWhiteboardUIEvent> showWindowEvent = boost::dynamic_pointer_cast<ShowWhiteboardUIEvent>(event);
		if (showWindowEvent) {
			WhiteboardWindow* window = findWhiteboardWindow(showWindowEvent->getContact());
			if (window != NULL) {
				window->activateWindow();
			}
		}
	}

	void WhiteboardManager::acceptSession(const JID& from) {
		IncomingWhiteboardSession::ref session = boost::dynamic_pointer_cast<IncomingWhiteboardSession>(whiteboardSessionManager_->getSession(from));
		WhiteboardWindow* window = findWhiteboardWindow(from);
		if (session && window) {
			session->accept();
			window->show();
		}
	}

	void WhiteboardManager::requestSession(const JID& contact) {
		WhiteboardSession::ref session = whiteboardSessionManager_->requestSession(contact);
		session->onSessionTerminated.connect(boost::bind(&WhiteboardManager::handleSessionTerminate, this, _1));
		session->onRequestAccepted.connect(boost::bind(&WhiteboardManager::handleSessionAccept, this, _1));
		session->onRequestRejected.connect(boost::bind(&WhiteboardManager::handleRequestReject, this, _1));

		WhiteboardWindow* window = findWhiteboardWindow(contact);
		if (window == NULL) {
			createNewWhiteboardWindow(contact, session);
		} else {
			window->setSession(session);
		}
		onSessionRequest(session->getTo(), true);
	}

	void WhiteboardManager::cancelSession(const JID& from) {
		WhiteboardSession::ref session = whiteboardSessionManager_->getSession(from);
		if (session) {
			session->cancel();
		}
	}

	void WhiteboardManager::handleIncomingSession(IncomingWhiteboardSession::ref session) {
		session->onSessionTerminated.connect(boost::bind(&WhiteboardManager::handleSessionTerminate, this, _1));
		session->onRequestAccepted.connect(boost::bind(&WhiteboardManager::handleSessionAccept, this, _1));

		WhiteboardWindow* window = findWhiteboardWindow(session->getTo());
		if (window == NULL) {
			createNewWhiteboardWindow(session->getTo(), session);
		} else {
			window->setSession(session);
		}

		onSessionRequest(session->getTo(), false);
	}

	void WhiteboardManager::handleSessionTerminate(const JID& contact) {
		onSessionTerminate(contact);
	}

	void WhiteboardManager::handleSessionCancel(const JID& contact) {
		onSessionTerminate(contact);
	}

	void WhiteboardManager::handleSessionAccept(const JID& contact) {
		WhiteboardWindow* window = findWhiteboardWindow(contact);
		window->show();
		onRequestAccepted(contact);
	}

	void WhiteboardManager::handleRequestReject(const JID& contact) {
		onRequestRejected(contact);
	}

}