/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file)
 and all other portions of this file are Copyright (c) 2013-2017 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages.
*/

#ifndef TC_HEADER_Platform_Serializable
#define TC_HEADER_Platform_Serializable

#include <stdexcept>
#include "PlatformBase.h"
#include "ForEach.h"
#include "Serializer.h"
#include "SerializerFactory.h"

namespace VeraCrypt
{
	class Serializable
	{
	public:
		virtual ~Serializable () { }

		virtual void Deserialize (shared_ptr <Stream> stream) = 0;
		static string DeserializeHeader (shared_ptr <Stream> stream);
		static Serializable *DeserializeNew (shared_ptr <Stream> stream);

		template <class T>
		static shared_ptr <T> DeserializeNew (shared_ptr <Stream> stream)
		{
			shared_ptr <T> p (dynamic_cast <T *> (DeserializeNew (stream)));
			if (!p)
				throw std::runtime_error (SRC_POS);
			return p;
		}

		template <class T>
		static void DeserializeList (shared_ptr <Stream> stream, list < shared_ptr <T> > &dataList)
		{
			if (DeserializeHeader (stream) != string ("list<") + SerializerFactory::GetName (typeid (T)) + ">")
				throw std::runtime_error (SRC_POS);

			Serializer sr (stream);
			uint64 listSize;
			sr.Deserialize ("ListSize", listSize);

			for (size_t i = 0; i < listSize; i++)
			{
				shared_ptr <T> p (dynamic_cast <T *> (DeserializeNew (stream)));
				if (!p)
					throw std::runtime_error (SRC_POS);
				dataList.push_back (p);
			}
		}

		virtual void Serialize (shared_ptr <Stream> stream) const;

		template <class T>
		static void SerializeList (shared_ptr <Stream> stream, const list < shared_ptr <T> > &dataList)
		{
			Serializer sr (stream);
			SerializeHeader (sr, string ("list<") + SerializerFactory::GetName (typeid (T)) + ">");

			sr.Serialize ("ListSize", (uint64) dataList.size());
			foreach_ref (const T &item, dataList)
				item.Serialize (stream);
		}

		static void SerializeHeader (Serializer &serializer, const string &name);

	protected:
		Serializable () { }
	};
}

#define TC_SERIALIZABLE(TYPE) \
	static Serializable *GetNewSerializable () { return new TYPE(); } \
	virtual void Deserialize (shared_ptr <Stream> stream); \
	virtual void Serialize (shared_ptr <Stream> stream) const

#endif // TC_HEADER_Platform_Serializable
