// 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/>.

#include "chaingen.h"
#include "chaingen_tests_list.h"

using namespace epee;
using namespace cryptonote;


//======================================================================================================================

gen_double_spend_in_different_chains::gen_double_spend_in_different_chains()
{
  REGISTER_CALLBACK_METHOD(gen_double_spend_in_different_chains, check_double_spend);
}

bool gen_double_spend_in_different_chains::generate(std::vector<test_event_entry>& events) const
{
  INIT_DOUBLE_SPEND_TEST();

  SET_EVENT_VISITOR_SETT(events, event_visitor_settings::set_txs_keeped_by_block, true);
  MAKE_TX(events, tx_1, bob_account, alice_account, send_amount / 2 - TESTS_DEFAULT_FEE, blk_1);
  events.pop_back();
  MAKE_TX(events, tx_2, bob_account, alice_account, send_amount - TESTS_DEFAULT_FEE, blk_1);
  events.pop_back();

  // Main chain
  events.push_back(tx_1);
  MAKE_NEXT_BLOCK_TX1(events, blk_2, blk_1r, miner_account, tx_1);

  // Alternative chain
  events.push_back(tx_2);
  MAKE_NEXT_BLOCK_TX1(events, blk_3, blk_1r, miner_account, tx_2);
  // Switch to alternative chain
  MAKE_NEXT_BLOCK(events, blk_4, blk_3, miner_account);
  CHECK_AND_NO_ASSERT_MES(expected_blockchain_height == get_block_height(blk_4) + 1, false, "expected_blockchain_height has invalid value");

  DO_CALLBACK(events, "check_double_spend");

  return true;
}

bool gen_double_spend_in_different_chains::check_double_spend(cryptonote::core& c, size_t /*ev_index*/, const std::vector<test_event_entry>& events)
{
  DEFINE_TESTS_ERROR_CONTEXT("gen_double_spend_in_different_chains::check_double_spend");

  std::list<block> block_list;
  bool r = c.get_blocks(0, 100 + 2 * CRYPTONOTE_MINED_MONEY_UNLOCK_WINDOW, block_list);
  CHECK_TEST_CONDITION(r);

  std::vector<block> blocks(block_list.begin(), block_list.end());
  CHECK_EQ(expected_blockchain_height, blocks.size());

  CHECK_EQ(1, c.get_pool_transactions_count());
  CHECK_EQ(1, c.get_alternative_blocks_count());

  cryptonote::account_base bob_account = boost::get<cryptonote::account_base>(events[1]);
  cryptonote::account_base alice_account = boost::get<cryptonote::account_base>(events[2]);

  std::vector<cryptonote::block> chain;
  map_hash2tx_t mtx;
  r = find_block_chain(events, chain, mtx, get_block_hash(blocks.back()));
  CHECK_TEST_CONDITION(r);
  CHECK_EQ(0, get_balance(bob_account, blocks, mtx));
  CHECK_EQ(send_amount - TESTS_DEFAULT_FEE, get_balance(alice_account, blocks, mtx));

  return true;
}