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/*
 * Copyright (c) 2011 Tobias Markmann
 * Licensed under the simplified BSD license.
 * See Documentation/Licenses/BSD-simplified.txt for more information.
 */

/*
 * Copyright (c) 2013 Remko Tronçon
 * Licensed under the GNU General Public License.
 * See the COPYING file for more information.
 */

#pragma once

#include <boost/cstdint.hpp>
#include <boost/optional.hpp>
#include <boost/shared_ptr.hpp>

#include <Swiften/Base/boost_bsignals.h>
#include <Swiften/FileTransfer/FileTransferError.h>

namespace Swift {
	class FileTransfer {
		public:
			struct State {
				enum Type {
					Initial,
					WaitingForStart,
					Negotiating,
					WaitingForAccept,
					Transferring,
					Canceled,
					Failed,
					Finished
				};

				State(Type type, const std::string& message = "") : type(type), message(message) {}

				Type type;
				std::string message;
			};
			typedef boost::shared_ptr<FileTransfer> ref;

		public:
			FileTransfer();
			virtual ~FileTransfer();

			virtual void cancel() = 0;

			const std::string& getFileName() const {
				return filename;
			}

			boost::uintmax_t getFileSizeInBytes() const {
				return fileSizeInBytes;
			}

		public:
			boost::signal<void (size_t /* proccessedBytes */)> onProcessedBytes;
			boost::signal<void (const State&)> onStateChanged;
			boost::signal<void (boost::optional<FileTransferError>)> onFinished;

		protected:
			void setFileInfo(const std::string& name, boost::uintmax_t size);

		private:
			boost::uintmax_t fileSizeInBytes;
			std::string filename;
	};
}