// Copyright (c) 2012-2015, 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 <cstdint>
#include <unordered_map>

#include "CryptoNoteCore/CryptoNoteBasic.h"
#include "CryptoNoteCore/ICore.h"
#include "CryptoNoteCore/ICoreObserver.h"
#include "CryptoNoteProtocol/CryptoNoteProtocolDefinitions.h"
#include "Rpc/CoreRpcServerCommandsDefinitions.h"

class ICoreStub: public CryptoNote::ICore {
public:
  ICoreStub() : topHeight(0), globalIndicesResult(false), randomOutsResult(false), poolTxVerificationResult(true) {};
  ICoreStub(const CryptoNote::Block& genesisBlock) : topHeight(0), globalIndicesResult(false), randomOutsResult(false), poolTxVerificationResult(true),
    poolChangesResult(true) {
    addBlock(genesisBlock);
  };

  virtual bool addObserver(CryptoNote::ICoreObserver* observer);
  virtual bool removeObserver(CryptoNote::ICoreObserver* observer);
  virtual void get_blockchain_top(uint32_t& height, Crypto::Hash& top_id);
  virtual std::vector<Crypto::Hash> findBlockchainSupplement(const std::vector<Crypto::Hash>& remoteBlockIds, size_t maxCount,
    uint32_t& totalBlockCount, uint32_t& startBlockIndex) override;
  virtual bool 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);
  virtual bool get_tx_outputs_gindexs(const Crypto::Hash& tx_id, std::vector<uint32_t>& indexs);
  virtual CryptoNote::i_cryptonote_protocol* get_protocol();
  virtual bool handle_incoming_tx(CryptoNote::BinaryArray const& tx_blob, CryptoNote::tx_verification_context& tvc, bool keeped_by_block);
  virtual std::vector<CryptoNote::Transaction> getPoolTransactions() override;
  virtual bool getPoolChanges(const Crypto::Hash& tailBlockId, const std::vector<Crypto::Hash>& knownTxsIds,
                              std::vector<CryptoNote::Transaction>& addedTxs, std::vector<Crypto::Hash>& deletedTxsIds) override;
  virtual bool getPoolChangesLite(const Crypto::Hash& tailBlockId, const std::vector<Crypto::Hash>& knownTxsIds,
          std::vector<CryptoNote::TransactionPrefixInfo>& addedTxs, std::vector<Crypto::Hash>& deletedTxsIds) override;
  virtual void getPoolChanges(const std::vector<Crypto::Hash>& knownTxsIds, std::vector<CryptoNote::Transaction>& addedTxs,
                              std::vector<Crypto::Hash>& deletedTxsIds) override;
  virtual bool 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) override;
  virtual bool 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) override;

  virtual bool have_block(const Crypto::Hash& id) override;
  std::vector<Crypto::Hash> buildSparseChain() override;
  std::vector<Crypto::Hash> buildSparseChain(const Crypto::Hash& startBlockId) override;
  virtual bool get_stat_info(CryptoNote::core_stat_info& st_inf) override { return false; }
  virtual bool on_idle() override { return false; }
  virtual void pause_mining() override {}
  virtual void update_block_template_and_resume_mining() override {}
  virtual bool handle_incoming_block_blob(const CryptoNote::BinaryArray& block_blob, CryptoNote::block_verification_context& bvc, bool control_miner, bool relay_block) override { return false; }
  virtual bool handle_get_objects(CryptoNote::NOTIFY_REQUEST_GET_OBJECTS::request& arg, CryptoNote::NOTIFY_RESPONSE_GET_OBJECTS::request& rsp) override { return false; }
  virtual void on_synchronized() override {}
  virtual bool is_ready() override { return true; }
  virtual bool getOutByMSigGIndex(uint64_t amount, uint64_t gindex, CryptoNote::MultisignatureOutput& out) override { return true; }
  virtual size_t addChain(const std::vector<const CryptoNote::IBlock*>& chain) override;

  virtual Crypto::Hash getBlockIdByHeight(uint32_t height) override;
  virtual bool getBlockByHash(const Crypto::Hash &h, CryptoNote::Block &blk) override;
  virtual bool getBlockHeight(const Crypto::Hash& blockId, uint32_t& blockHeight) override;
  virtual void getTransactions(const std::vector<Crypto::Hash>& txs_ids, std::list<CryptoNote::Transaction>& txs, std::list<Crypto::Hash>& missed_txs, bool checkTxPool = false) override;
  virtual bool getBackwardBlocksSizes(uint32_t fromHeight, std::vector<size_t>& sizes, size_t count) override;
  virtual bool getBlockSize(const Crypto::Hash& hash, size_t& size) override;
  virtual bool getAlreadyGeneratedCoins(const Crypto::Hash& hash, uint64_t& generatedCoins) override;
  virtual bool getBlockReward(size_t medianSize, size_t currentBlockSize, uint64_t alreadyGeneratedCoins, uint64_t fee,
      bool penalizeFee, uint64_t& reward, int64_t& emissionChange) override;
  virtual bool scanOutputkeysForIndices(const CryptoNote::KeyInput& txInToKey, std::list<std::pair<Crypto::Hash, size_t>>& outputReferences) override;
  virtual bool getBlockDifficulty(uint32_t height, CryptoNote::difficulty_type& difficulty) override;
  virtual bool getBlockContainingTx(const Crypto::Hash& txId, Crypto::Hash& blockId, uint32_t& blockHeight) override;
  virtual bool getMultisigOutputReference(const CryptoNote::MultisignatureInput& txInMultisig, std::pair<Crypto::Hash, size_t>& outputReference) override;

  virtual bool getGeneratedTransactionsNumber(uint32_t height, uint64_t& generatedTransactions) override;
  virtual bool getOrphanBlocksByHeight(uint32_t height, std::vector<CryptoNote::Block>& blocks) override;
  virtual bool getBlocksByTimestamp(uint64_t timestampBegin, uint64_t timestampEnd, uint32_t blocksNumberLimit, std::vector<CryptoNote::Block>& blocks, uint32_t& blocksNumberWithinTimestamps) override;
  virtual bool getPoolTransactionsByTimestamp(uint64_t timestampBegin, uint64_t timestampEnd, uint32_t transactionsNumberLimit, std::vector<CryptoNote::Transaction>& transactions, uint64_t& transactionsNumberWithinTimestamps) override;
  virtual bool getTransactionsByPaymentId(const Crypto::Hash& paymentId, std::vector<CryptoNote::Transaction>& transactions) override;
  virtual std::unique_ptr<CryptoNote::IBlock> getBlock(const Crypto::Hash& blockId) override;
  virtual bool handleIncomingTransaction(const CryptoNote::Transaction& tx, const Crypto::Hash& txHash, size_t blobSize, CryptoNote::tx_verification_context& tvc, bool keptByBlock) override;
  virtual std::error_code executeLocked(const std::function<std::error_code()>& func) override;

  virtual bool addMessageQueue(CryptoNote::MessageQueue<CryptoNote::BlockchainMessage>& messageQueuePtr) override;
  virtual bool removeMessageQueue(CryptoNote::MessageQueue<CryptoNote::BlockchainMessage>& messageQueuePtr) override;


  void set_blockchain_top(uint32_t height, const Crypto::Hash& top_id);
  void set_outputs_gindexs(const std::vector<uint32_t>& indexs, bool result);
  void set_random_outs(const CryptoNote::COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS_response& resp, bool result);

  void addBlock(const CryptoNote::Block& block);
  void addTransaction(const CryptoNote::Transaction& tx);

  void setPoolTxVerificationResult(bool result);
  void setPoolChangesResult(bool result);

private:
  uint32_t topHeight;
  Crypto::Hash topId;

  std::vector<uint32_t> globalIndices;
  bool globalIndicesResult;

  CryptoNote::COMMAND_RPC_GET_RANDOM_OUTPUTS_FOR_AMOUNTS_response randomOuts;
  bool randomOutsResult;

  std::unordered_map<Crypto::Hash, CryptoNote::Block> blocks;
  std::unordered_map<uint32_t, Crypto::Hash> blockHashByHeightIndex;
  std::unordered_map<Crypto::Hash, Crypto::Hash> blockHashByTxHashIndex;

  std::unordered_map<Crypto::Hash, CryptoNote::Transaction> transactions;
  std::unordered_map<Crypto::Hash, CryptoNote::Transaction> transactionPool;
  bool poolTxVerificationResult;
  
  bool poolChangesResult;
};