/*
 * This file is part of the Flowee project
 * Copyright (C) 2015 The Bitcoin Core developers
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef FLOWEE_MERKLE
#define FLOWEE_MERKLE

#include <cstdint>
#include <vector>

#include "primitives/MutableBlock.h"
#include "primitives/Block.h"
#include "uint256.h"

uint256 ComputeMerkleRoot(std::vector<uint256> hashes, bool* mutated);
std::vector<uint256> ComputeMerkleBranch(const std::vector<uint256>& leaves, uint32_t position);
uint256 ComputeMerkleRootFromBranch(const uint256& leaf, const std::vector<uint256>& branch, uint32_t position);

/*
 * Compute the Merkle root of the transactions in a block.
 * *mutated is set to true if a duplicated subtree was found.
 */
uint256 BlockMerkleRoot(const MutableBlock& block, bool* mutated = nullptr);
uint256 BlockMerkleRoot(const Block &block, bool* mutated = nullptr);

/*
 * Compute the Merkle branch for the tree of transactions in a block, for a
 * given position.
 * This can be verified using ComputeMerkleRootFromBranch.
 */
std::vector<uint256> BlockMerkleBranch(const MutableBlock& block, uint32_t position);

#endif