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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 <Swiften/Whiteboard/WhiteboardServer.h>
#include <Swiften/Whiteboard/WhiteboardTransformer.h>
#include <iostream>

namespace Swift {
	void WhiteboardServer::handleLocalOperationReceived(WhiteboardOperation::ref operation) {
		operations_.push_back(operation);
	}

	WhiteboardOperation::ref WhiteboardServer::handleClientOperationReceived(WhiteboardOperation::ref newOperation) {
		std::list<WhiteboardOperation::ref>::reverse_iterator it;
		if (operations_.size() == 0 || newOperation->getParentID() == operations_.back()->getID()) {
			operations_.push_back(newOperation);
			return newOperation;
		}
		for (it = operations_.rbegin(); it != operations_.rend(); ++it) {
			WhiteboardOperation::ref operation = *it;
			while (newOperation->getParentID() == operation->getParentID()) {
				std::pair<WhiteboardOperation::ref, WhiteboardOperation::ref> tResult = WhiteboardTransformer::transform(newOperation, operation);

				if (it == operations_.rbegin()) {
					operations_.push_back(tResult.second);
					return tResult.second;
				} else {
					newOperation = tResult.second;
					--it;
					operation = *it;
				}

			}
		}
		return WhiteboardOperation::ref();
	}

	void WhiteboardServer::print() {
		std::list<WhiteboardOperation::ref>::iterator it;
		std::cout << "Server:" << std::endl;
		for(it = operations_.begin(); it != operations_.end(); ++it) {
			std::cout << (*it)->getID() << " " << (*it)->getPos() << std::endl;
		}
	}

}