/**
* @file       SpendMetaData.h
*
* @brief      SpendMetaData class for the Zerocoin library.
*
* @author     Ian Miers, Christina Garman and Matthew Green
* @date       June 2013
*
* @copyright  Copyright 2013 Ian Miers, Christina Garman and Matthew Green
* @license    This project is released under the MIT license.
**/

#ifndef SPENDMETADATA_H_
#define SPENDMETADATA_H_

#include "bitcoin_bignum/uint256.h"
#include "bitcoin_bignum/serialize.h"

using namespace std;
namespace libzerocoin {

/** Any meta data needed for actual bitcoin integration.
 * Can extended provided the getHash() function is updated
 */
class SpendMetaData {
public:
	/**
	 * Creates meta data associated with a coin spend
	 * @param accumulatorId hash of block containing accumulator
	 * @param txHash hash of transaction
	 */
	SpendMetaData(uint256 accumulatorId, uint256 txHash);

	/**
	 * The hash of the block containing the accumulator CoinSpend
	 * proves membership in.
	 */
	uint256 accumulatorId; // The block the accumulator is in
	/**Contains the hash of the rest of transaction
	 * spending a zerocoin (excluding the coinspend proof)
	 */
	uint256 txHash; // The Hash of the rest of the transaction the spend proof is n.
						// Allows us to sign the transaction.
    IMPLEMENT_SERIALIZE
    (
    	READWRITE(accumulatorId);
    	READWRITE(txHash);
	)
};

} /* namespace libzerocoin */
#endif /* SPENDMETADATA_H_ */