text: // Copyright (c) 2018-2020, The Investcoin Project, GRIF-IT
  
  #include "ICoreStub.h"
  
  #include "CryptoNoteCore/CryptoNoteFormatUtils.h"
  #include "CryptoNoteCore/CryptoNoteTools.h"
  #include "CryptoNoteCore/IBlock.h"
  #include "CryptoNoteCore/VerificationContext.h"
  
  
  ICoreStub::ICoreStub() :
      topHeight(0),
      globalIndicesResult(false),
      randomOutsResult(false),
      poolTxVerificationResult(true),
      poolChangesResult(true) {
  }
  
  ICoreStub::ICoreStub(const CryptoNote::Block& genesisBlock) :
      topHeight(0),
      globalIndicesResult(false),
      randomOutsResult(false),
      poolTxVerificationResult(true),
      poolChangesResult(true) {
    addBlock(genesisBlock);
  }
  
  bool ICoreStub::addObserver(CryptoNote::ICoreObserver* observer) {
    return m_observerManager.add(observer);
  }
  
  bool ICoreStub::removeObserver(CryptoNote::ICoreObserver* observer) {
    return m_observerManager.remove(observer);
  }
  
  void ICoreStub::get_blockchain_top(uint32_t& height, Crypto::Hash& top_id) {
    height = topHeight;
    top_id = topId;
  }
  
  std::vector<Crypto::Hash> ICoreStub::findBlockchainSupplement(const std::vector<Crypto::Hash>& remoteBlockIds, size_t maxCount,
    uint32_t& totalBlockCount, uint32_t& startBlockIndex) {
  
    //Sending all blockchain
    totalBlockCount = static_cast<uint32_t>(blocks.size());
    startBlockIndex = 0;
    std::vector<Crypto::Hash> result;
    result.reserve(std::min(blocks.size(), maxCount));
    for (uint32_t height = 0; height < static_cast<uint32_t>(std::min(blocks.size(), maxCount)); ++height) {
      assert(blockHashByHeightIndex.count(height) > 0);
      result.push_back(blockHashByHeightIndex[height]);
    }
    return result;
  }
  
  bool ICoreStub::get_random_outs_for_amounts(const CryptoNote::COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS_request& req,
      CryptoNote::COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS_response& res) {
    res = randomOuts;
    return randomOutsResult;
  }
  
  bool ICoreStub::get_tx_outputs_gindexs(const Crypto::Hash& tx_id, std::vector<uint32_t>& indexs) {
    std::copy(globalIndices.begin(), globalIndices.end(), std::back_inserter(indexs));
    return globalIndicesResult;
  }
  
  CryptoNote::i_cryptonote_protocol* ICoreStub::get_protocol() {
    return nullptr;
  }
  
  bool ICoreStub::handle_incoming_tx(CryptoNote::BinaryArray const& tx_blob, CryptoNote::tx_verification_context& tvc, bool keeped_by_block) {
    return true;
  }
  
  void ICoreStub::set_blockchain_top(uint32_t height, const Crypto::Hash& top_id) {
    topHeight = height;
    topId = top_id;
    m_observerManager.notify(&CryptoNote::ICoreObserver::blockchainUpdated);
  }
  
  void ICoreStub::set_outputs_gindexs(const std::vector<uint32_t>& indexs, bool result) {
    globalIndices.clear();
    std::copy(indexs.begin(), indexs.end(), std::back_inserter(globalIndices));
    globalIndicesResult = result;
  }
  
  void ICoreStub::set_random_outs(const CryptoNote::COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS_response& resp, bool result) {
    randomOuts = resp;
    randomOutsResult = result;
  }
  
  std::vector<CryptoNote::Transaction> ICoreStub::getPoolTransactions() {
    return std::vector<CryptoNote::Transaction>();
  }
  
  bool ICoreStub::getPoolChanges(const Crypto::Hash& tailBlockId, const std::vector<Crypto::Hash>& knownTxsIds,
                                 std::vector<CryptoNote::Transaction>& addedTxs, std::vector<Crypto::Hash>& deletedTxsIds) {
    std::unordered_set<Crypto::Hash> knownSet;
    for (const Crypto::Hash& txId : knownTxsIds) {
      if (transactionPool.find(txId) == transactionPool.end()) {
        deletedTxsIds.push_back(txId);
      }
  
      knownSet.insert(txId);
    }
  
    for (const std::pair<Crypto::Hash, CryptoNote::Transaction>& poolEntry : transactionPool) {
      if (knownSet.find(poolEntry.first) == knownSet.end()) {
        addedTxs.push_back(poolEntry.second);
      }
    }
  
    return poolChangesResult;
  }
  
  bool ICoreStub::getPoolChangesLite(const Crypto::Hash& tailBlockId, const std::vector<Crypto::Hash>& knownTxsIds,
          std::vector<CryptoNote::TransactionPrefixInfo>& addedTxs, std::vector<Crypto::Hash>& deletedTxsIds) {
    std::vector<CryptoNote::Transaction> added;
    bool returnStatus = getPoolChanges(tailBlockId, knownTxsIds, added, deletedTxsIds);
  
    for (const auto& tx : added) {
      CryptoNote::TransactionPrefixInfo tpi;
      tpi.txPrefix = tx;
      tpi.txHash = getObjectHash(tx);
  
      addedTxs.push_back(std::move(tpi));
    }
  
    return returnStatus;
  }
  
  void ICoreStub::getPoolChanges(const std::vector<Crypto::Hash>& knownTxsIds, std::vector<CryptoNote::Transaction>& addedTxs,
                                 std::vector<Crypto::Hash>& deletedTxsIds) {
  }
  
  bool ICoreStub::queryBlocks(const std::vector<Crypto::Hash>& block_ids, uint64_t timestamp,
    uint32_t& start_height, uint32_t& current_height, uint32_t& full_offset, std::vector<CryptoNote::BlockFullInfo>& entries) {
    //stub
    return true;
  }
  
  bool ICoreStub::queryBlocksLite(const std::vector<Crypto::Hash>& block_ids, uint64_t timestamp,
    uint32_t& start_height, uint32_t& current_height, uint32_t& full_offset, std::vector<CryptoNote::BlockShortInfo>& entries) {
    //stub
    return true;
  }
  
  std::vector<Crypto::Hash> ICoreStub::buildSparseChain() {
    std::vector<Crypto::Hash> result;
    result.reserve(blockHashByHeightIndex.size());
    for (auto kvPair : blockHashByHeightIndex) {
      result.emplace_back(kvPair.second);
    }
  
    std::reverse(result.begin(), result.end());
    return result;
  }
  
  std::vector<Crypto::Hash> ICoreStub::buildSparseChain(const Crypto::Hash& startBlockId) {
    // TODO implement
    assert(blocks.count(startBlockId) > 0);
    std::vector<Crypto::Hash> result;
    result.emplace_back(blockHashByHeightIndex[0]);
    return result;
  }
  
  size_t ICoreStub::addChain(const std::vector<const CryptoNote::IBlock*>& chain) {
    size_t blocksCounter = 0;
    for (const CryptoNote::IBlock* block : chain) {
      for (size_t txNumber = 0; txNumber < block->getTransactionCount(); ++txNumber) {
        const CryptoNote::Transaction& tx = block->getTransaction(txNumber);
        Crypto::Hash txHash = CryptoNote::NULL_HASH;
        size_t blobSize = 0;
        getObjectHash(tx, txHash, blobSize);
        addTransaction(tx);
      }
      addBlock(block->getBlock());
      ++blocksCounter;
    }
  
    return blocksCounter;
  }
  
  Crypto::Hash ICoreStub::getBlockIdByHeight(uint32_t height) {
    auto iter = blockHashByHeightIndex.find(height);
    if (iter == blockHashByHeightIndex.end()) {
      return CryptoNote::NULL_HASH;
    }
    return iter->second;
  }
  
  bool ICoreStub::getBlockByHash(const Crypto::Hash &h, CryptoNote::Block &blk) {
    auto iter = blocks.find(h);
    if (iter == blocks.end()) {
      return false;
    }
    blk = iter->second;
    return true;
  }
  
  bool ICoreStub::getBlockHeight(const Crypto::Hash& blockId, uint32_t& blockHeight) {
    auto it = blocks.find(blockId);
    if (it == blocks.end()) {
      return false;
    }
    blockHeight = get_block_height(it->second);
    return true;
  }
  
  void ICoreStub::getTransactions(const std::vector<Crypto::Hash>& txs_ids, std::list<CryptoNote::Transaction>& txs, std::list<Crypto::Hash>& missed_txs, bool checkTxPool) {
    for (const Crypto::Hash& hash : txs_ids) {
      auto iter = transactions.find(hash);
      if (iter != transactions.end()) {
        txs.push_back(iter->second);
      } else {
        missed_txs.push_back(hash);
      }
    }
    if (checkTxPool) {
      std::list<Crypto::Hash> pullTxIds(std::move(missed_txs));
      missed_txs.clear();
      for (const Crypto::Hash& hash : pullTxIds) {
        auto iter = transactionPool.find(hash);
        if (iter != transactionPool.end()) {
          txs.push_back(iter->second);
        }
        else {
          missed_txs.push_back(hash);
        }
      }
    }
  }
  
  bool ICoreStub::getBackwardBlocksSizes(uint32_t fromHeight, std::vector<size_t>& sizes, size_t count) {
    return true;
  }
  
  bool ICoreStub::getBlockSize(const Crypto::Hash& hash, size_t& size) {
    return true;
  }
  
  bool ICoreStub::getAlreadyGeneratedCoins(const Crypto::Hash& hash, uint64_t& generatedCoins) {
    return true;
  }
  
  bool ICoreStub::getBlockReward(uint8_t blockMajorVersion, size_t medianSize, size_t currentBlockSize, uint64_t alreadyGeneratedCoins, uint64_t fee,
      uint64_t& reward, int64_t& emissionChange) {
    return true;
  }
  
  bool ICoreStub::scanOutputkeysForIndices(const CryptoNote::KeyInput& txInToKey, std::list<std::pair<Crypto::Hash, size_t>>& outputReferences) {
    return true;
  }
  
  bool ICoreStub::getBlockDifficulty(uint32_t height, CryptoNote::difficulty_type& difficulty) {
    return true;
  }
  
  bool ICoreStub::getBlockContainingTx(const Crypto::Hash& txId, Crypto::Hash& blockId, uint32_t& blockHeight) {
    auto iter = blockHashByTxHashIndex.find(txId);
    if (iter == blockHashByTxHashIndex.end()) {
      return false;
    }
    blockId = iter->second;
    auto blockIter = blocks.find(blockId);
    if (blockIter == blocks.end()) {
      return false;
    }
    blockHeight = boost::get<CryptoNote::BaseInput>(blockIter->second.baseTransaction.inputs.front()).blockIndex;
    return true;
  }
  
  bool ICoreStub::getMultisigOutputReference(const CryptoNote::MultisignatureInput& txInMultisig, std::pair<Crypto::Hash, size_t>& outputReference) {
    return true;
  }
  
  void ICoreStub::addBlock(const CryptoNote::Block& block) {
    uint32_t height = boost::get<CryptoNote::BaseInput>(block.baseTransaction.inputs.front()).blockIndex;
    Crypto::Hash hash = CryptoNote::get_block_hash(block);
    if (height > topHeight || blocks.empty()) {
      topHeight = height;
      topId = hash;
    }
    blocks.emplace(std::make_pair(hash, block));
    blockHashByHeightIndex.emplace(std::make_pair(height, hash));
  
    blockHashByTxHashIndex.emplace(std::make_pair(CryptoNote::getObjectHash(block.baseTransaction), hash));
    for (auto txHash : block.transactionHashes) {
      blockHashByTxHashIndex.emplace(std::make_pair(txHash, hash));
    }
  
    m_observerManager.notify(&CryptoNote::ICoreObserver::blockchainUpdated);
  }
  
  void ICoreStub::addTransaction(const CryptoNote::Transaction& tx) {
    Crypto::Hash hash = CryptoNote::getObjectHash(tx);
    transactions.emplace(std::make_pair(hash, tx));
  }
  
  bool ICoreStub::getGeneratedTransactionsNumber(uint32_t height, uint64_t& generatedTransactions) {
    return true;
  }
  
  bool ICoreStub::getOrphanBlocksByHeight(uint32_t height, std::vector<CryptoNote::Block>& blocks) {
    return true;
  }
  
  bool ICoreStub::getBlocksByTimestamp(uint64_t timestampBegin, uint64_t timestampEnd, uint32_t blocksNumberLimit, std::vector<CryptoNote::Block>& blocks, uint32_t& blocksNumberWithinTimestamps) {
    return true;
  }
  
  bool ICoreStub::getPoolTransactionsByTimestamp(uint64_t timestampBegin, uint64_t timestampEnd, uint32_t transactionsNumberLimit, std::vector<CryptoNote::Transaction>& transactions, uint64_t& transactionsNumberWithinTimestamps) {
    return true;
  }
  
  bool ICoreStub::getTransactionsByPaymentId(const Crypto::Hash& paymentId, std::vector<CryptoNote::Transaction>& transactions) {
    return true;
  }
  
  std::error_code ICoreStub::executeLocked(const std::function<std::error_code()>& func) {
    return func();
  }
  
  std::unique_ptr<CryptoNote::IBlock> ICoreStub::getBlock(const Crypto::Hash& blockId) {
    return std::unique_ptr<CryptoNote::IBlock>(nullptr);
  }
  
  bool ICoreStub::handleIncomingTransaction(const CryptoNote::Transaction& tx, const Crypto::Hash& txHash, size_t blobSize, CryptoNote::tx_verification_context& tvc, bool keptByBlock, uint32_t height) {
    auto result = transactionPool.emplace(std::make_pair(txHash, tx));
    tvc.m_verification_failed = !poolTxVerificationResult;
    tvc.m_added_to_pool = true;
    tvc.m_should_be_relayed = result.second;
    return poolTxVerificationResult;
  }
  
  bool ICoreStub::have_block(const Crypto::Hash& id) {
    return blocks.count(id) > 0;
  }
  
  void ICoreStub::setPoolTxVerificationResult(bool result) {
    poolTxVerificationResult = result;
  }
  
  bool ICoreStub::addMessageQueue(CryptoNote::MessageQueue<CryptoNote::BlockchainMessage>& messageQueuePtr) {
    return true;
  }
  
  bool ICoreStub::removeMessageQueue(CryptoNote::MessageQueue<CryptoNote::BlockchainMessage>& messageQueuePtr) {
    return true;
  }
  
  void ICoreStub::setPoolChangesResult(bool result) {
    poolChangesResult = result;
  }
  
  uint64_t ICoreStub::getMinimalFeeForHeight(uint32_t height) {
  	return 10000000000ULL;
  };
  uint64_t ICoreStub::getMinimalFee() {
  	return 10000000000ULL;
  };
  uint8_t ICoreStub::getBlockMajorVersionForHeight(uint32_t height) {
  	return (uint8_t)4;
  };
  uint8_t ICoreStub::getCurrentBlockMajorVersion() {
  	return (uint8_t)4;
  };
  