// Copyright (c) 2012-2014, The CryptoNote developers, The Bytecoin developers
//
// This file is part of Bytecoin.
//
// Bytecoin is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Bytecoin 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 Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with Bytecoin.  If not, see <http://www.gnu.org/licenses/>.

#pragma once

#include <vector>

#include "cryptonote_core/account.h"
#include "cryptonote_core/cryptonote_basic.h"
#include "cryptonote_core/cryptonote_format_utils.h"
#include "crypto/crypto.h"

#include "multi_tx_test_base.h"

template<size_t a_ring_size>
class test_check_ring_signature : private multi_tx_test_base<a_ring_size>
{
  static_assert(0 < a_ring_size, "ring_size must be greater than 0");

public:
  static const size_t loop_count = a_ring_size < 100 ? 100 : 10;
  static const size_t ring_size = a_ring_size;

  typedef multi_tx_test_base<a_ring_size> base_class;

  bool init()
  {
    using namespace cryptonote;

    if (!base_class::init())
      return false;

    m_alice.generate();

    std::vector<tx_destination_entry> destinations;
    destinations.push_back(tx_destination_entry(this->m_source_amount, m_alice.get_keys().m_account_address));

    if (!construct_tx(this->m_miners[this->real_source_idx].get_keys(), this->m_sources, destinations, std::vector<uint8_t>(), m_tx, 0))
      return false;

    get_transaction_prefix_hash(m_tx, m_tx_prefix_hash);

    return true;
  }

  bool test()
  {
    const cryptonote::txin_to_key& txin = boost::get<cryptonote::txin_to_key>(m_tx.vin[0]);
    return crypto::check_ring_signature(m_tx_prefix_hash, txin.k_image, this->m_public_key_ptrs, ring_size, m_tx.signatures[0].data());
  }

private:
  cryptonote::account_base m_alice;
  cryptonote::transaction m_tx;
  crypto::hash m_tx_prefix_hash;
};