text: // Copyright (c) 2018 The Bitcoin Core developers
  // Distributed under the MIT software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include <interfaces/wallet.h>
  
  #include <amount.h>
  #include <consensus/validation.h>
  #include <interfaces/chain.h>
  #include <interfaces/handler.h>
  #include <policy/feerate.h>
  #include <policy/fees.h>
  #include <primitives/transaction.h>
  #include <script/standard.h>
  #include <support/allocators/secure.h>
  #include <sync.h>
  #include <ui_interface.h>
  #include <uint256.h>
  #include <util/system.h>
  #include <wallet/feebumper.h>
  #include <wallet/fees.h>
  #include <wallet/ismine.h>
  #include <wallet/rpcwallet.h>
  #include <wallet/load.h>
  #include <wallet/wallet.h>
  #include <wallet/walletutil.h>
  #include <key_io.h>
  
  #include <memory>
  #include <string>
  #include <utility>
  #include <vector>
  #include <algorithm>
  
  namespace interfaces {
  namespace {
  
  //! Construct wallet tx struct.
  WalletTx MakeWalletTx(interfaces::Chain::Lock& locked_chain, CWallet& wallet, const CWalletTx& wtx)
  {
      WalletTx result;
      result.tx = wtx.tx;
      result.txin_is_mine.reserve(wtx.tx->vin.size());
      for (const auto& txin : wtx.tx->vin) {
          result.txin_is_mine.emplace_back(wallet.IsMine(txin));
      }
      result.txout_is_mine.reserve(wtx.tx->vout.size());
      result.txout_address.reserve(wtx.tx->vout.size());
      result.txout_address_is_mine.reserve(wtx.tx->vout.size());
      for (const auto& txout : wtx.tx->vout) {
          result.txout_is_mine.emplace_back(wallet.IsMine(txout));
          result.txout_address.emplace_back();
          result.txout_address_is_mine.emplace_back(ExtractDestination(txout.scriptPubKey, result.txout_address.back()) ?
                                                        IsMine(wallet, result.txout_address.back()) :
                                                        ISMINE_NO);
      }
      result.credit = wtx.GetCredit(locked_chain, ISMINE_ALL);
      result.debit = wtx.GetDebit(ISMINE_ALL);
      result.change = wtx.GetChange();
      result.time = wtx.GetTxTime();
      result.value_map = wtx.mapValue;
      result.is_coinbase = wtx.IsCoinBase();
      result.is_coinstake = wtx.IsCoinStake();
      result.is_in_main_chain = wtx.IsInMainChain(locked_chain);
      result.has_create_or_call = wtx.tx->HasCreateOrCall();
      if(result.has_create_or_call)
      {
          CTxDestination tx_sender_address;
          if(wtx.tx && wtx.tx->vin.size() > 0 && wallet.mapWallet.find(wtx.tx->vin[0].prevout.hash) != wallet.mapWallet.end() &&
                  ExtractDestination(wallet.mapWallet.at(wtx.tx->vin[0].prevout.hash).tx->vout[wtx.tx->vin[0].prevout.n].scriptPubKey, tx_sender_address)) {
              result.tx_sender_key = GetKeyForDestination(wallet, tx_sender_address);
          }
  
          for(CTxDestination address : result.txout_address) {
              result.txout_keys.emplace_back(GetKeyForDestination(wallet, address));
          }
      }
      return result;
  }
  
  //! Construct wallet tx status struct.
  WalletTxStatus MakeWalletTxStatus(interfaces::Chain::Lock& locked_chain, const CWalletTx& wtx)
  {
      WalletTxStatus result;
      result.block_height = locked_chain.getBlockHeight(wtx.m_confirm.hashBlock).get_value_or(std::numeric_limits<int>::max());
      result.blocks_to_maturity = wtx.GetBlocksToMaturity(locked_chain);
      result.depth_in_main_chain = wtx.GetDepthInMainChain(locked_chain);
      result.time_received = wtx.nTimeReceived;
      result.lock_time = wtx.tx->nLockTime;
      result.is_final = locked_chain.checkFinalTx(*wtx.tx);
      result.is_trusted = wtx.IsTrusted(locked_chain);
      result.is_abandoned = wtx.isAbandoned();
      result.is_coinbase = wtx.IsCoinBase();
      result.is_coinstake = wtx.IsCoinStake();
      result.is_in_main_chain = wtx.IsInMainChain(locked_chain);
      return result;
  }
  
  //! Construct wallet TxOut struct.
  WalletTxOut MakeWalletTxOut(interfaces::Chain::Lock& locked_chain,
      CWallet& wallet,
      const CWalletTx& wtx,
      int n,
      int depth) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
  {
      WalletTxOut result;
      result.txout = wtx.tx->vout[n];
      result.time = wtx.GetTxTime();
      result.depth_in_main_chain = depth;
      result.is_spent = wallet.IsSpent(locked_chain, wtx.GetHash(), n);
      return result;
  }
  
  //! Construct token info.
  CTokenInfo MakeTokenInfo(const TokenInfo& token)
  {
      CTokenInfo result;
      result.strContractAddress = token.contract_address;
      result.strTokenName = token.token_name;
      result.strTokenSymbol = token.token_symbol;
      result.nDecimals = token.decimals;
      result.strSenderAddress = token.sender_address;
      result.nCreateTime = token.time;
      result.blockHash = token.block_hash;
      result.blockNumber = token.block_number;
      return result;
  }
  
  //! Construct wallet token info.
  TokenInfo MakeWalletTokenInfo(const CTokenInfo& token)
  {
      TokenInfo result;
      result.contract_address = token.strContractAddress;
      result.token_name = token.strTokenName;
      result.token_symbol = token.strTokenSymbol;
      result.decimals = token.nDecimals;
      result.sender_address = token.strSenderAddress;
      result.time = token.nCreateTime;
      result.block_hash = token.blockHash;
      result.block_number = token.blockNumber;
      result.hash = token.GetHash();
      return result;
  }
  
  //! Construct token transaction.
  CTokenTx MakeTokenTx(const TokenTx& tokenTx)
  {
      CTokenTx result;
      result.strContractAddress = tokenTx.contract_address;
      result.strSenderAddress = tokenTx.sender_address;
      result.strReceiverAddress = tokenTx.receiver_address;
      result.nValue = tokenTx.value;
      result.transactionHash = tokenTx.tx_hash;
      result.nCreateTime = tokenTx.time;
      result.blockHash = tokenTx.block_hash;
      result.blockNumber = tokenTx.block_number;
      result.strLabel = tokenTx.label;
      return result;
  }
  
  //! Construct wallet token transaction.
  TokenTx MakeWalletTokenTx(const CTokenTx& tokenTx)
  {
      TokenTx result;
      result.contract_address = tokenTx.strContractAddress;
      result.sender_address = tokenTx.strSenderAddress;
      result.receiver_address = tokenTx.strReceiverAddress;
      result.value = tokenTx.nValue;
      result.tx_hash = tokenTx.transactionHash;
      result.time = tokenTx.nCreateTime;
      result.block_hash = tokenTx.blockHash;
      result.block_number = tokenTx.blockNumber;
      result.label = tokenTx.strLabel;
      result.hash = tokenTx.GetHash();
      return result;
  }
  
  ContractBookData MakeContractBook(const std::string& id, const CContractBookData& data)
  {
      ContractBookData result;
      result.address = id;
      result.name = data.name;
      result.abi = data.abi;
      return result;
  }
  
  bool TokenTxStatus(interfaces::Chain::Lock& locked_chain, CWallet& wallet, const uint256& txid, int& block_number, bool& in_mempool, int& num_blocks)
  {
      auto mi = wallet.mapTokenTx.find(txid);
      if (mi == wallet.mapTokenTx.end()) {
          return false;
      }
      block_number = mi->second.blockNumber;
      auto it = wallet.mapWallet.find(mi->second.transactionHash); 
      if(it != wallet.mapWallet.end())
      {
          in_mempool = it->second.InMempool();
      }
      if (Optional<int> height = locked_chain.getHeight()) {
          num_blocks = *height;
      } else {
          num_blocks = -1;
      }
      return true;
  }
  
  class WalletImpl : public Wallet
  {
  public:
      explicit WalletImpl(const std::shared_ptr<CWallet>& wallet) : m_wallet(wallet) {}
  
      bool encryptWallet(const SecureString& wallet_passphrase) override
      {
          return m_wallet->EncryptWallet(wallet_passphrase);
      }
      bool isCrypted() override { return m_wallet->IsCrypted(); }
      bool lock() override { return m_wallet->Lock(); }
      bool unlock(const SecureString& wallet_passphrase) override { return m_wallet->Unlock(wallet_passphrase); }
      bool isLocked() override { return m_wallet->IsLocked(); }
      bool changeWalletPassphrase(const SecureString& old_wallet_passphrase,
          const SecureString& new_wallet_passphrase) override
      {
          return m_wallet->ChangeWalletPassphrase(old_wallet_passphrase, new_wallet_passphrase);
      }
      void abortRescan() override { m_wallet->AbortRescan(); }
      bool backupWallet(const std::string& filename) override { return m_wallet->BackupWallet(filename); }
      std::string getWalletName() override { return m_wallet->GetName(); }
      bool getNewDestination(const OutputType type, const std::string label, CTxDestination& dest) override
      {
          LOCK(m_wallet->cs_wallet);
          std::string error;
          return m_wallet->GetNewDestination(type, label, dest, error);
      }
      bool getPubKey(const CKeyID& address, CPubKey& pub_key) override { return m_wallet->GetPubKey(address, pub_key); }
      bool getPrivKey(const CKeyID& address, CKey& key) override { return m_wallet->GetKey(address, key); }
      bool isSpendable(const CTxDestination& dest) override { return IsMine(*m_wallet, dest) & ISMINE_SPENDABLE; }
      bool haveWatchOnly() override { return m_wallet->HaveWatchOnly(); };
      bool setAddressBook(const CTxDestination& dest, const std::string& name, const std::string& purpose) override
      {
          return m_wallet->SetAddressBook(dest, name, purpose);
      }
      bool delAddressBook(const CTxDestination& dest) override
      {
          return m_wallet->DelAddressBook(dest);
      }
      bool getAddress(const CTxDestination& dest,
          std::string* name,
          isminetype* is_mine,
          std::string* purpose) override
      {
          LOCK(m_wallet->cs_wallet);
          auto it = m_wallet->mapAddressBook.find(dest);
          if (it == m_wallet->mapAddressBook.end()) {
              return false;
          }
          if (name) {
              *name = it->second.name;
          }
          if (is_mine) {
              *is_mine = IsMine(*m_wallet, dest);
          }
          if (purpose) {
              *purpose = it->second.purpose;
          }
          return true;
      }
      std::vector<WalletAddress> getAddresses() override
      {
          LOCK(m_wallet->cs_wallet);
          std::vector<WalletAddress> result;
          for (const auto& item : m_wallet->mapAddressBook) {
              result.emplace_back(item.first, IsMine(*m_wallet, item.first), item.second.name, item.second.purpose);
          }
          return result;
      }
      void learnRelatedScripts(const CPubKey& key, OutputType type) override { m_wallet->LearnRelatedScripts(key, type); }
      bool addDestData(const CTxDestination& dest, const std::string& key, const std::string& value) override
      {
          LOCK(m_wallet->cs_wallet);
          return m_wallet->AddDestData(dest, key, value);
      }
      bool eraseDestData(const CTxDestination& dest, const std::string& key) override
      {
          LOCK(m_wallet->cs_wallet);
          return m_wallet->EraseDestData(dest, key);
      }
      std::vector<std::string> getDestValues(const std::string& prefix) override
      {
          LOCK(m_wallet->cs_wallet);
          return m_wallet->GetDestValues(prefix);
      }
      void lockCoin(const COutPoint& output) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->LockCoin(output);
      }
      void unlockCoin(const COutPoint& output) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->UnlockCoin(output);
      }
      bool isLockedCoin(const COutPoint& output) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->IsLockedCoin(output.hash, output.n);
      }
      void listLockedCoins(std::vector<COutPoint>& outputs) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->ListLockedCoins(outputs);
      }
      CTransactionRef createTransaction(const std::vector<CRecipient>& recipients,
          const CCoinControl& coin_control,
          bool sign,
          int& change_pos,
          CAmount& fee,
          std::string& fail_reason) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          CTransactionRef tx;
          if (!m_wallet->CreateTransaction(*locked_chain, recipients, tx, fee, change_pos,
                  fail_reason, coin_control, sign)) {
              return {};
          }
          return tx;
      }
      bool commitTransaction(CTransactionRef tx,
          WalletValueMap value_map,
          WalletOrderForm order_form,
          std::string& reject_reason) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          CValidationState state;
          if (!m_wallet->CommitTransaction(std::move(tx), std::move(value_map), std::move(order_form), state)) {
              reject_reason = state.GetRejectReason();
              return false;
          }
          return true;
      }
      bool transactionCanBeAbandoned(const uint256& txid) override { return m_wallet->TransactionCanBeAbandoned(txid); }
      bool abandonTransaction(const uint256& txid) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->AbandonTransaction(*locked_chain, txid);
      }
      bool transactionCanBeBumped(const uint256& txid) override
      {
          return feebumper::TransactionCanBeBumped(m_wallet.get(), txid);
      }
      bool createBumpTransaction(const uint256& txid,
          const CCoinControl& coin_control,
          CAmount total_fee,
          std::vector<std::string>& errors,
          CAmount& old_fee,
          CAmount& new_fee,
          CMutableTransaction& mtx) override
      {
          if (total_fee > 0) {
              return feebumper::CreateTotalBumpTransaction(m_wallet.get(), txid, coin_control, total_fee, errors, old_fee, new_fee, mtx) ==
                 feebumper::Result::OK;
          } else {
              return feebumper::CreateRateBumpTransaction(m_wallet.get(), txid, coin_control, errors, old_fee, new_fee, mtx) ==
                  feebumper::Result::OK;
          }
      }
      bool signBumpTransaction(CMutableTransaction& mtx) override { return feebumper::SignTransaction(m_wallet.get(), mtx); }
      bool commitBumpTransaction(const uint256& txid,
          CMutableTransaction&& mtx,
          std::vector<std::string>& errors,
          uint256& bumped_txid) override
      {
          return feebumper::CommitTransaction(m_wallet.get(), txid, std::move(mtx), errors, bumped_txid) ==
                 feebumper::Result::OK;
      }
      CTransactionRef getTx(const uint256& txid) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          auto mi = m_wallet->mapWallet.find(txid);
          if (mi != m_wallet->mapWallet.end()) {
              return mi->second.tx;
          }
          return {};
      }
      WalletTx getWalletTx(const uint256& txid) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          auto mi = m_wallet->mapWallet.find(txid);
          if (mi != m_wallet->mapWallet.end()) {
              return MakeWalletTx(*locked_chain, *m_wallet, mi->second);
          }
          return {};
      }
      std::vector<WalletTx> getWalletTxs() override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          std::vector<WalletTx> result;
          result.reserve(m_wallet->mapWallet.size());
          for (const auto& entry : m_wallet->mapWallet) {
              result.emplace_back(MakeWalletTx(*locked_chain, *m_wallet, entry.second));
          }
          return result;
      }
      bool tryGetTxStatus(const uint256& txid,
          interfaces::WalletTxStatus& tx_status,
          int& num_blocks,
          int64_t& block_time) override
      {
          auto locked_chain = m_wallet->chain().lock(true /* try_lock */);
          if (!locked_chain) {
              return false;
          }
          TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
          if (!locked_wallet) {
              return false;
          }
          auto mi = m_wallet->mapWallet.find(txid);
          if (mi == m_wallet->mapWallet.end()) {
              return false;
          }
          if (Optional<int> height = locked_chain->getHeight()) {
              num_blocks = *height;
              block_time = locked_chain->getBlockTime(*height);
          } else {
              num_blocks = -1;
              block_time = -1;
          }
          tx_status = MakeWalletTxStatus(*locked_chain, mi->second);
          return true;
      }
      WalletTx getWalletTxDetails(const uint256& txid,
          WalletTxStatus& tx_status,
          WalletOrderForm& order_form,
          bool& in_mempool,
          int& num_blocks) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          auto mi = m_wallet->mapWallet.find(txid);
          if (mi != m_wallet->mapWallet.end()) {
              num_blocks = locked_chain->getHeight().get_value_or(-1);
              in_mempool = mi->second.InMempool();
              order_form = mi->second.vOrderForm;
              tx_status = MakeWalletTxStatus(*locked_chain, mi->second);
              return MakeWalletTx(*locked_chain, *m_wallet, mi->second);
          }
          return {};
      }
      WalletBalances getBalances() override
      {
          const auto bal = m_wallet->GetBalance();
          WalletBalances result;
          result.balance = bal.m_mine_trusted;
          result.unconfirmed_balance = bal.m_mine_untrusted_pending;
          result.immature_balance = bal.m_mine_immature;
          result.stake = bal.m_mine_stake;
          result.have_watch_only = m_wallet->HaveWatchOnly();
          if (result.have_watch_only) {
              result.watch_only_balance = bal.m_watchonly_trusted;
              result.unconfirmed_watch_only_balance = bal.m_watchonly_untrusted_pending;
              result.immature_watch_only_balance = bal.m_watchonly_immature;
              result.watch_only_stake = bal.m_watchonly_stake;
          }
          return result;
      }
      bool tryGetBalances(WalletBalances& balances, int& num_blocks) override
      {
          auto locked_chain = m_wallet->chain().lock(true /* try_lock */);
          if (!locked_chain) return false;
          TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
          if (!locked_wallet) {
              return false;
          }
          balances = getBalances();
          num_blocks = locked_chain->getHeight().get_value_or(-1);
          return true;
      }
      CAmount getBalance() override { return m_wallet->GetBalance().m_mine_trusted; }
      CAmount getAvailableBalance(const CCoinControl& coin_control) override
      {
          return m_wallet->GetAvailableBalance(&coin_control);
      }
      isminetype txinIsMine(const CTxIn& txin) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->IsMine(txin);
      }
      isminetype txoutIsMine(const CTxOut& txout) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->IsMine(txout);
      }
      CAmount getDebit(const CTxIn& txin, isminefilter filter) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->GetDebit(txin, filter);
      }
      CAmount getCredit(const CTxOut& txout, isminefilter filter) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->GetCredit(txout, filter);
      }
      bool isUnspentAddress(const std::string &fantasygoldAddress) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          std::vector<COutput> vecOutputs;
          m_wallet->AvailableCoins(*locked_chain, vecOutputs);
          for (const COutput& out : vecOutputs)
          {
              CTxDestination address;
              const CScript& scriptPubKey = out.tx->tx->vout[out.i].scriptPubKey;
              bool fValidAddress = ExtractDestination(scriptPubKey, address);
  
              if(fValidAddress && EncodeDestination(address) == fantasygoldAddress && out.tx->tx->vout[out.i].nValue)
              {
                  return true;
              }
          }
          return false;
      }
      bool isMineAddress(const std::string &strAddress) override
      {
          CTxDestination address = DecodeDestination(strAddress);
          if(!IsValidDestination(address) || !IsMine(*m_wallet, address))
          {
              return false;
          }
          return true;
      }
      std::vector<std::string> availableAddresses(interfaces::Chain::Lock& locked_chain, bool fIncludeZeroValue)
      {
          std::vector<std::string> result;
          std::vector<COutput> vecOutputs;
          std::map<std::string, bool> mapAddress;
  
          if(fIncludeZeroValue)
          {
              // Get the user created addresses in from the address book and add them if they are mine
              for (const auto& item : m_wallet->mapAddressBook) {
                  if(!IsMine(*m_wallet, item.first)) continue;
  
                  std::string strAddress = EncodeDestination(item.first);
                  if (mapAddress.find(strAddress) == mapAddress.end())
                  {
                      mapAddress[strAddress] = true;
                      result.push_back(strAddress);
                  }
              }
  
              // Get all coins including the 0 values
              m_wallet->AvailableCoins(locked_chain, vecOutputs, false, nullptr, 0);
          }
          else
          {
              // Get all spendable coins
              m_wallet->AvailableCoins(locked_chain, vecOutputs);
          }
  
          // Extract all coins addresses and add them in the list
          for (const COutput& out : vecOutputs)
          {
              CTxDestination address;
              const CScript& scriptPubKey = out.tx->tx->vout[out.i].scriptPubKey;
              bool fValidAddress = ExtractDestination(scriptPubKey, address);
  
              if (!fValidAddress || !IsMine(*m_wallet, address)) continue;
  
              std::string strAddress = EncodeDestination(address);
              if (mapAddress.find(strAddress) == mapAddress.end())
              {
                  mapAddress[strAddress] = true;
                  result.push_back(strAddress);
              }
          }
  
          return result;
      }
      bool tryGetAvailableAddresses(std::vector<std::string> &spendableAddresses, std::vector<std::string> &allAddresses, bool &includeZeroValue) override
      {
          auto locked_chain = m_wallet->chain().lock(true);
          if (!locked_chain) return false;
          TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
          if (!locked_wallet) {
              return false;
          }
  
          spendableAddresses = availableAddresses(*locked_chain, false);
          allAddresses = availableAddresses(*locked_chain, true);
          includeZeroValue = ::ChainActive().Height() >= Params().GetConsensus().QIP5Height;
  
          return true;
      }
      CoinsList listCoins() override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          CoinsList result;
          for (const auto& entry : m_wallet->ListCoins(*locked_chain)) {
              auto& group = result[entry.first];
              for (const auto& coin : entry.second) {
                  group.emplace_back(COutPoint(coin.tx->GetHash(), coin.i),
                      MakeWalletTxOut(*locked_chain, *m_wallet, *coin.tx, coin.i, coin.nDepth));
              }
          }
          return result;
      }
      std::vector<WalletTxOut> getCoins(const std::vector<COutPoint>& outputs) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          std::vector<WalletTxOut> result;
          result.reserve(outputs.size());
          for (const auto& output : outputs) {
              result.emplace_back();
              auto it = m_wallet->mapWallet.find(output.hash);
              if (it != m_wallet->mapWallet.end()) {
                  int depth = it->second.GetDepthInMainChain(*locked_chain);
                  if (depth >= 0) {
                      result.back() = MakeWalletTxOut(*locked_chain, *m_wallet, it->second, output.n, depth);
                  }
              }
          }
          return result;
      }
      CAmount getRequiredFee(unsigned int tx_bytes) override { return GetRequiredFee(*m_wallet, tx_bytes); }
      CAmount getMinimumFee(unsigned int tx_bytes,
          const CCoinControl& coin_control,
          int* returned_target,
          FeeReason* reason) override
      {
          FeeCalculation fee_calc;
          CAmount result;
          result = GetMinimumFee(*m_wallet, tx_bytes, coin_control, &fee_calc);
          if (returned_target) *returned_target = fee_calc.returnedTarget;
          if (reason) *reason = fee_calc.reason;
          return result;
      }
      unsigned int getConfirmTarget() override { return m_wallet->m_confirm_target; }
      bool hdEnabled() override { return m_wallet->IsHDEnabled(); }
      bool canGetAddresses() override { return m_wallet->CanGetAddresses(); }
      bool IsWalletFlagSet(uint64_t flag) override { return m_wallet->IsWalletFlagSet(flag); }
      OutputType getDefaultAddressType() override { return m_wallet->m_default_address_type; }
      OutputType getDefaultChangeType() override { return m_wallet->m_default_change_type; }
      CAmount getDefaultMaxTxFee() override { return m_wallet->m_default_max_tx_fee; }
      void remove() override
      {
          RemoveWallet(m_wallet);
      }
      bool addTokenEntry(const TokenInfo &token) override
      {
          return m_wallet->AddTokenEntry(MakeTokenInfo(token), true);
      }
      bool addTokenTxEntry(const TokenTx& tokenTx, bool fFlushOnClose) override
      {
          return m_wallet->AddTokenTxEntry(MakeTokenTx(tokenTx), fFlushOnClose);
      }
      bool existTokenEntry(const TokenInfo &token) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          uint256 hash = MakeTokenInfo(token).GetHash();
          std::map<uint256, CTokenInfo>::iterator it = m_wallet->mapToken.find(hash);
  
          return it != m_wallet->mapToken.end();
      }
      bool removeTokenEntry(const std::string &sHash) override
      {
          return m_wallet->RemoveTokenEntry(uint256S(sHash), true);
      }
      std::vector<TokenInfo> getInvalidTokens() override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          std::vector<TokenInfo> listInvalid;
          for(auto& info : m_wallet->mapToken)
          {
              std::string strAddress = info.second.strSenderAddress;
              CTxDestination address = DecodeDestination(strAddress);
              if(!IsMine(*m_wallet, address))
              {
                  listInvalid.push_back(MakeWalletTokenInfo(info.second));
              }
          }
  
          return listInvalid;
      }
      TokenTx getTokenTx(const uint256& txid) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          auto mi = m_wallet->mapTokenTx.find(txid);
          if (mi != m_wallet->mapTokenTx.end()) {
              return MakeWalletTokenTx(mi->second);
          }
          return {};
      }
      std::vector<TokenTx> getTokenTxs() override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          std::vector<TokenTx> result;
          result.reserve(m_wallet->mapTokenTx.size());
          for (const auto& entry : m_wallet->mapTokenTx) {
              result.emplace_back(MakeWalletTokenTx(entry.second));
          }
          return result;
      }
      TokenInfo getToken(const uint256& id) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          auto mi = m_wallet->mapToken.find(id);
          if (mi != m_wallet->mapToken.end()) {
              return MakeWalletTokenInfo(mi->second);
          }
          return {};
      }
      std::vector<TokenInfo> getTokens() override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          std::vector<TokenInfo> result;
          result.reserve(m_wallet->mapToken.size());
          for (const auto& entry : m_wallet->mapToken) {
              result.emplace_back(MakeWalletTokenInfo(entry.second));
          }
          return result;
      }
      bool tryGetTokenTxStatus(const uint256& txid, int& block_number, bool& in_mempool, int& num_blocks) override
      {
          auto locked_chain = m_wallet->chain().lock(true);
          if (!locked_chain) {
              return false;
          }
          TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
          if (!locked_wallet) {
              return false;
          }
          return TokenTxStatus(*locked_chain, *m_wallet, txid, block_number, in_mempool, num_blocks);
      }
      bool getTokenTxStatus(const uint256& txid, int& block_number, bool& in_mempool, int& num_blocks) override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
  
          return TokenTxStatus(*locked_chain, *m_wallet, txid, block_number, in_mempool, num_blocks);
      }
      bool getTokenTxDetails(const TokenTx &wtx, uint256& credit, uint256& debit, std::string& tokenSymbol, uint8_t& decimals) override
      {
          return m_wallet->GetTokenTxDetails(MakeTokenTx(wtx), credit, debit, tokenSymbol, decimals);
      }
      bool isTokenTxMine(const TokenTx &wtx) override
      {
          return m_wallet->IsTokenTxMine(MakeTokenTx(wtx));
      }
      ContractBookData getContractBook(const std::string& id) override
      {
          LOCK(m_wallet->cs_wallet);
  
          auto mi = m_wallet->mapContractBook.find(id);
          if (mi != m_wallet->mapContractBook.end()) {
              return MakeContractBook(id, mi->second);
          }
          return {};
      }
      std::vector<ContractBookData> getContractBooks() override
      {
          LOCK(m_wallet->cs_wallet);
  
          std::vector<ContractBookData> result;
          result.reserve(m_wallet->mapContractBook.size());
          for (const auto& entry : m_wallet->mapContractBook) {
              result.emplace_back(MakeContractBook(entry.first, entry.second));
          }
          return result;
      }
      bool existContractBook(const std::string& id) override
      {
          LOCK(m_wallet->cs_wallet);
  
          auto mi = m_wallet->mapContractBook.find(id);
          return mi != m_wallet->mapContractBook.end();
      }
      bool delContractBook(const std::string& id) override
      {
          return m_wallet->DelContractBook(id);
      }
      bool setContractBook(const std::string& id, const std::string& name, const std::string& abi) override
      {
          return m_wallet->SetContractBook(id, name, abi);
      }
      bool tryGetStakeWeight(uint64_t& nWeight) override
      {
          auto locked_chain = m_wallet->chain().lock(true);
          if (!locked_chain) {
              return false;
          }
          TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
          if (!locked_wallet) {
              return false;
          }
  
          nWeight = m_wallet->GetStakeWeight(*locked_chain);
          return true;
      }
      uint64_t getStakeWeight() override
      {
          auto locked_chain = m_wallet->chain().lock();
          LOCK(m_wallet->cs_wallet);
          return m_wallet->GetStakeWeight(*locked_chain);
      }
      int64_t getLastCoinStakeSearchInterval() override 
      { 
          return m_wallet->m_last_coin_stake_search_interval;
      }
      bool getWalletUnlockStakingOnly() override
      {
          return m_wallet->m_wallet_unlock_staking_only;
      }
      void setWalletUnlockStakingOnly(bool unlock) override
      {
          m_wallet->m_wallet_unlock_staking_only = unlock;
      }
      bool cleanTokenTxEntries() override
      {
          return m_wallet->CleanTokenTxEntries();
      }
      void setEnabledStaking(bool enabled) override
      {
          m_wallet->m_enabled_staking = enabled;
      }
      bool getEnabledStaking() override
      {
          return m_wallet->m_enabled_staking;
      }
      std::unique_ptr<Handler> handleUnload(UnloadFn fn) override
      {
          return MakeHandler(m_wallet->NotifyUnload.connect(fn));
      }
      std::unique_ptr<Handler> handleShowProgress(ShowProgressFn fn) override
      {
          return MakeHandler(m_wallet->ShowProgress.connect(fn));
      }
      std::unique_ptr<Handler> handleStatusChanged(StatusChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyStatusChanged.connect([fn](CWallet*) { fn(); }));
      }
      std::unique_ptr<Handler> handleAddressBookChanged(AddressBookChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyAddressBookChanged.connect(
              [fn](CWallet*, const CTxDestination& address, const std::string& label, bool is_mine,
                  const std::string& purpose, ChangeType status) { fn(address, label, is_mine, purpose, status); }));
      }
      std::unique_ptr<Handler> handleTransactionChanged(TransactionChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyTransactionChanged.connect(
              [fn](CWallet*, const uint256& txid, ChangeType status) { fn(txid, status); }));
      }
      std::unique_ptr<Handler> handleTokenTransactionChanged(TokenTransactionChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyTokenTransactionChanged.connect(
              [fn](CWallet*, const uint256& id, ChangeType status) { fn(id, status); }));
      }
      std::unique_ptr<Handler> handleTokenChanged(TokenChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyTokenChanged.connect(
              [fn](CWallet*, const uint256& id, ChangeType status) { fn(id, status); }));
      }
      std::unique_ptr<Handler> handleWatchOnlyChanged(WatchOnlyChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyWatchonlyChanged.connect(fn));
      }
      std::unique_ptr<Handler> handleCanGetAddressesChanged(CanGetAddressesChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyCanGetAddressesChanged.connect(fn));
      }
      std::unique_ptr<Handler> handleContractBookChanged(ContractBookChangedFn fn) override
      {
          return MakeHandler(m_wallet->NotifyContractBookChanged.connect(
              [fn](CWallet*, const std::string& address, const std::string& label,
                  const std::string& abi, ChangeType status) { fn(address, label, abi, status); }));
      }
  
      std::shared_ptr<CWallet> m_wallet;
  };
  
  class WalletClientImpl : public ChainClient
  {
  public:
      WalletClientImpl(Chain& chain, std::vector<std::string> wallet_filenames)
          : m_chain(chain), m_wallet_filenames(std::move(wallet_filenames))
      {
      }
      void registerRpcs() override { return RegisterWalletRPCCommands(m_chain, m_rpc_handlers); }
      bool verify() override { return VerifyWallets(m_chain, m_wallet_filenames); }
      bool load() override { return LoadWallets(m_chain, m_wallet_filenames); }
      void start(CScheduler& scheduler) override { return StartWallets(scheduler); }
      void flush() override { return FlushWallets(); }
      void stop() override { return StopWallets(); }
      ~WalletClientImpl() override { UnloadWallets(); }
  
      Chain& m_chain;
      std::vector<std::string> m_wallet_filenames;
      std::vector<std::unique_ptr<Handler>> m_rpc_handlers;
  };
  
  } // namespace
  
  std::unique_ptr<Wallet> MakeWallet(const std::shared_ptr<CWallet>& wallet) { return wallet ? MakeUnique<WalletImpl>(wallet) : nullptr; }
  
  std::unique_ptr<ChainClient> MakeWalletClient(Chain& chain, std::vector<std::string> wallet_filenames)
  {
      return MakeUnique<WalletClientImpl>(chain, std::move(wallet_filenames));
  }
  
  } // namespace interfaces
  