text: // Copyright (c) 2009-2010 Satoshi Nakamoto
  // Copyright (c) 2009-2012 The Bitcoin developers
  // Copyright (c) 2011-2012 The Peercoin developers
  // Copyright (c) 2013-2014 The Slimcoin developers
  // Distributed under the MIT/X11 software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  #ifndef BITCOIN_WALLET_H
  #define BITCOIN_WALLET_H
  
  #include <string>
  #include <vector>
  
  #include <stdlib.h>
  
  #include "main.h"
  #include "key.h"
  #include "keystore.h"
  #include "script.h"
  #include "ui_interface.h"
  #include "util.h"
  #include "walletdb.h"
  
  extern bool fWalletUnlockMintOnly;
  
  class CWalletTx;
  class CReserveKey;
  class CAccountingEntry;
  // class CWalletDB;
  class COutput;
  class CCoinControl;
  
  /** (client) version numbers for particular wallet features */
  enum WalletFeature
  {
      FEATURE_BASE = 10500, // the earliest version new wallets supports (only useful for getinfo's clientversion output)
  
      FEATURE_WALLETCRYPT = 40000, // wallet encryption
      FEATURE_COMPRPUBKEY = 60000, // compressed public keys
  
      FEATURE_LATEST = 60000
  };
  
  
  /** A key pool entry */
  class CKeyPool
  {
  public:
      int64 nTime;
      CPubKey vchPubKey;
  
      CKeyPool()
      {
          nTime = GetTime();
      }
  
      CKeyPool(const CPubKey& vchPubKeyIn)
      {
          nTime = GetTime();
          vchPubKey = vchPubKeyIn;
      }
  
      IMPLEMENT_SERIALIZE
      (
          if (!(nType & SER_GETHASH))
              READWRITE(nVersion);
          READWRITE(nTime);
          READWRITE(vchPubKey);
      )
  };
  
  /** A CWallet is an extension of a keystore, which also maintains a set of transactions and balances,
   * and provides the ability to create new transactions.
   */
  class CWallet : public CCryptoKeyStore
  {
  private:
      bool SelectCoins(int64 nTargetValue, unsigned int nSpendTime, std::set<std::pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet, const CCoinControl *coinControl=NULL) const;
  
      CWalletDB *pwalletdbEncryption;
  
      // the current wallet version: clients below this version are not able to load the wallet
      int nWalletVersion;
  
      // the maxmimum wallet format version: memory-only variable that specifies to what version this wallet may be upgraded
      int nWalletMaxVersion;
  
  public:
      mutable CCriticalSection cs_wallet;
  
      bool fFileBacked;
      std::string strWalletFile;
  
      std::set<int64> setKeyPool;
  
  
      typedef std::map<unsigned int, CMasterKey> MasterKeyMap;
      MasterKeyMap mapMasterKeys;
      unsigned int nMasterKeyMaxID;
  
      CWallet()
      {
          nWalletVersion = FEATURE_BASE;
          nWalletMaxVersion = FEATURE_BASE;
          fFileBacked = false;
          nMasterKeyMaxID = 0;
          pwalletdbEncryption = NULL;
      }
      CWallet(std::string strWalletFileIn)
      {
          nWalletVersion = FEATURE_BASE;
          nWalletMaxVersion = FEATURE_BASE;
          strWalletFile = strWalletFileIn;
          fFileBacked = true;
          nMasterKeyMaxID = 0;
          pwalletdbEncryption = NULL;
      }
  
      std::map<uint256, CWalletTx> mapWallet;
  
      // A set for all burn transactions' hashes
      std::set<uint256> setBurnHashes;
  
      std::vector<uint256> vWalletUpdated;
  
      std::map<uint256, int> mapRequestCount;
  
      std::map<CTxDestination, std::string> mapAddressBook;
  
      CPubKey vchDefaultKey;
  
      // check whether we are allowed to upgrade (or already support) to the named feature
      bool CanSupportFeature(enum WalletFeature wf) { return nWalletMaxVersion >= wf; }
  
      void AvailableCoins(unsigned int nSpendTime, std::vector<COutput>& vCoins, bool fOnlyConfirmed=true, const CCoinControl *coinControl=NULL) const;
      bool SelectCoinsMinConf(int64 nTargetValue, int nConfMine, int nConfTheirs, std::vector<COutput> vCoins, std::set<std::pair<const CWalletTx*,unsigned int> >& setCoinsRet, int64& nValueRet) const;
  
      // keystore implementation
      // Generate a new key
      CPubKey GenerateNewKey();
      // Adds a key to the store, and saves it to disk.
      bool AddKey(const CKey& key);
      // Adds a key to the store, without saving it to disk (used by LoadWallet)
      bool LoadKey(const CKey& key) { return CCryptoKeyStore::AddKey(key); }
  
      bool LoadMinVersion(int nVersion) { nWalletVersion = nVersion; nWalletMaxVersion = std::max(nWalletMaxVersion, nVersion); return true; }
  
      // Adds an encrypted key to the store, and saves it to disk.
      bool AddCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret);
      // Adds an encrypted key to the store, without saving it to disk (used by LoadWallet)
      bool LoadCryptedKey(const CPubKey &vchPubKey, const std::vector<unsigned char> &vchCryptedSecret) { SetMinVersion(FEATURE_WALLETCRYPT); return CCryptoKeyStore::AddCryptedKey(vchPubKey, vchCryptedSecret); }
      bool AddCScript(const CScript& redeemScript);
      bool LoadCScript(const CScript& redeemScript) { return CCryptoKeyStore::AddCScript(redeemScript); }
  
      void SearchOPRETURNTransactions(uint256 hash, std::vector<std::pair<std::string, int> >& vTxResults);
      void GetTxMessages(std::vector<std::pair<std::string, int> >& vTxResults);
      void GetMyTxMessages(std::vector<std::pair<std::string, int> >& vTxResults);
  
      bool Lock();
      bool Unlock(const SecureString& strWalletPassphrase);
      bool ChangeWalletPassphrase(const SecureString& strOldWalletPassphrase, const SecureString& strNewWalletPassphrase);
      bool EncryptWallet(const SecureString& strWalletPassphrase);
  
      void MarkDirty();
      bool AddToWallet(const CWalletTx& wtxIn, bool fBurnTx = false);
      bool AddToWalletIfInvolvingMe(const CTransaction& tx, const CBlock* pblock, bool fUpdate = false, bool fFindBlock = false);
      bool EraseFromWallet(uint256 hash);
      void ClearOrphans();
      void WalletUpdateSpent(const CTransaction& prevout);
      int ScanForWalletTransactions(CBlockIndex* pindexStart, bool fUpdate = false);
      int ScanForWalletTransaction(const uint256& hashTx);
      void ReacceptWalletTransactions();
      void ResendWalletTransactions();
      int64 GetBalance() const;
      int64 GetReserveBalance() const;
      int64 GetUnconfirmedBalance() const;
      int64 GetImmatureBalance() const;
      int64 GetStake() const;
      int64 GetNewMint() const;
      bool CreateTransaction(const std::vector<std::pair<CScript, int64> >& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet, const CCoinControl *coinControl=NULL);
      bool CreateTransaction(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, CReserveKey& reservekey, int64& nFeeRet, const CCoinControl *coinControl=NULL);
      bool CreateCoinStake(const CKeyStore& keystore, unsigned int nBits, int64 nSearchInterval, CTransaction& txNew);
      bool CommitTransaction(CWalletTx& wtxNew, CReserveKey& reservekey, bool fBurnTx=false);
      std::string SendMoney(CScript scriptPubKey, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false, bool fBurnTx=false);
      std::string SendMoneyToDestination(const CTxDestination &address, int64 nValue, CWalletTx& wtxNew, bool fAskFee=false, bool fBurnTx=false);
  
      bool NewKeyPool();
      bool TopUpKeyPool();
      int64 AddReserveKey(const CKeyPool& keypool);
      void ReserveKeyFromKeyPool(int64& nIndex, CKeyPool& keypool);
      void KeepKey(int64 nIndex);
      void ReturnKey(int64 nIndex);
      bool GetKeyFromPool(CPubKey &key, bool fAllowReuse=true);
      int64 GetOldestKeyPoolTime();
      void GetAllReserveKeys(std::set<CKeyID>& setAddress);
  
      bool IsMine(const CTxIn& txin) const;
      int64 GetDebit(const CTxIn& txin) const;
      bool IsMine(const CTxOut& txout) const
      {
          return ::IsMine(*this, txout.scriptPubKey);
      }
      int64 GetCredit(const CTxOut& txout) const
      {
          if (!MoneyRange(txout.nValue))
              throw std::runtime_error("CWallet::GetCredit() : value out of range");
          return (IsMine(txout) ? txout.nValue : 0);
      }
      bool IsChange(const CTxOut& txout) const;
      int64 GetChange(const CTxOut& txout) const
      {
          if (!MoneyRange(txout.nValue))
              throw std::runtime_error("CWallet::GetChange() : value out of range");
          return (IsChange(txout) ? txout.nValue : 0);
      }
      bool IsMine(const CTransaction& tx) const
      {
          BOOST_FOREACH(const CTxOut& txout, tx.vout)
              if (IsMine(txout))
                  return true;
          return false;
      }
      bool IsFromMe(const CTransaction& tx) const
      {
          return (GetDebit(tx) > 0);
      }
      int64 GetDebit(const CTransaction& tx) const
      {
          int64 nDebit = 0;
          BOOST_FOREACH(const CTxIn& txin, tx.vin)
          {
              nDebit += GetDebit(txin);
              if (!MoneyRange(nDebit))
                  throw std::runtime_error("CWallet::GetDebit() : value out of range");
          }
          return nDebit;
      }
      int64 GetCredit(const CTransaction& tx) const
      {
          int64 nCredit = 0;
          BOOST_FOREACH(const CTxOut& txout, tx.vout)
          {
              nCredit += GetCredit(txout);
              if (!MoneyRange(nCredit))
                  throw std::runtime_error("CWallet::GetCredit() : value out of range");
          }
          return nCredit;
      }
      int64 GetChange(const CTransaction& tx) const
      {
          int64 nChange = 0;
          BOOST_FOREACH(const CTxOut& txout, tx.vout)
          {
              nChange += GetChange(txout);
              if (!MoneyRange(nChange))
                  throw std::runtime_error("CWallet::GetChange() : value out of range");
          }
          return nChange;
      }
      void SetBestChain(const CBlockLocator& loc);
  
      int LoadWallet(bool& fFirstRunRet);
      int ZapWalletTx(std::vector<CWalletTx>& vWtx);
  
      bool SetAddressBookName(const CTxDestination& address, const std::string& strName);
  
      bool DelAddressBookName(const CTxDestination& address);
  
      void UpdatedTransaction(const uint256 &hashTx)
      {
          {
              LOCK(cs_wallet);
              vWalletUpdated.push_back(hashTx);
          }
      }
  
      void PrintWallet(const CBlock& block);
  
      void Inventory(const uint256 &hash)
      {
          {
              LOCK(cs_wallet);
              std::map<uint256, int>::iterator mi = mapRequestCount.find(hash);
              if (mi != mapRequestCount.end())
                  (*mi).second++;
          }
      }
  
      int GetKeyPoolSize()
      {
          return setKeyPool.size();
      }
  
      bool GetTransaction(const uint256 &hashTx, CWalletTx& wtx);
  
      bool SetDefaultKey(const CPubKey &vchPubKey);
  
      // signify that a particular wallet feature is now used. this may change nWalletVersion and nWalletMaxVersion if those are lower
      bool SetMinVersion(enum WalletFeature, CWalletDB* pwalletdbIn = NULL, bool fExplicit = false);
  
      // change which version we're allowed to upgrade to (note that this does not immediately imply upgrading to that format)
      bool SetMaxVersion(int nVersion);
  
      // get the current wallet format (the oldest client version guaranteed to understand this wallet)
      int GetVersion() { return nWalletVersion; }
  
      // wallet check/repair
      void Fix_SpentCoins(int& nMismatchSpent, int64& nBalanceInQuestion, int& nOrphansFound, bool fCheckOnly = false);
      void FixSpentCoins(int& nMismatchSpent, int64& nBalanceInQuestion, bool fCheckOnly = false);
      void DisableTransaction(const CTransaction &tx);
  
      /** Address book entry changed.
       * @note called with lock cs_wallet held.
       */
      boost::signals2::signal<void (CWallet *wallet, const CTxDestination &address, const std::string &label, bool isMine, ChangeType status)> NotifyAddressBookChanged;
  
      /** Wallet transaction added, removed or updated.
       * @note called with lock cs_wallet held.
       */
      boost::signals2::signal<void (CWallet *wallet, const uint256 &hashTx, ChangeType status)> NotifyTransactionChanged;
  };
  
  /** A key allocated from the key pool. */
  class CReserveKey
  {
  protected:
      CWallet* pwallet;
      int64 nIndex;
      CPubKey vchPubKey;
  public:
      CReserveKey(CWallet* pwalletIn)
      {
          nIndex = -1;
          pwallet = pwalletIn;
      }
  
      ~CReserveKey()
      {
          if (!fShutdown)
              ReturnKey();
      }
  
      void ReturnKey();
      CPubKey GetReservedKey();
      void KeepKey();
  };
  
  
  /** A transaction with a bunch of additional info that only the owner cares about. 
   * It includes any unrecorded transactions needed to link it back to the block chain.
   */
  class CWalletTx : public CMerkleTx
  {
  private:
      const CWallet* pwallet;
  
  public:
      std::vector<CMerkleTx> vtxPrev;
      std::map<std::string, std::string> mapValue;
      std::vector<std::pair<std::string, std::string> > vOrderForm;
      unsigned int fTimeReceivedIsTxTime;
      unsigned int nTime;
      unsigned int nTimeReceived;  // time received by this node
      unsigned int nTimeSmart;
      char fFromMe;
      std::string strFromAccount;
      std::vector<char> vfSpent; // which outputs are already spent
      int64 nOrderPos;  // position in ordered transaction list
  
      // memory only
      mutable bool fDebitCached;
      mutable bool fCreditCached;
      mutable bool fAvailableCreditCached;
      mutable bool fChangeCached;
      mutable int64 nDebitCached;
      mutable int64 nCreditCached;
      mutable int64 nAvailableCreditCached;
      mutable int64 nChangeCached;
  
      CWalletTx()
      {
          Init(NULL);
      }
  
      CWalletTx(const CWallet* pwalletIn)
      {
          Init(pwalletIn);
      }
  
      CWalletTx(const CWallet* pwalletIn, const CMerkleTx& txIn) : CMerkleTx(txIn)
      {
          Init(pwalletIn);
      }
  
      CWalletTx(const CWallet* pwalletIn, const CTransaction& txIn) : CMerkleTx(txIn)
      {
          Init(pwalletIn);
      }
  
      void Init(const CWallet* pwalletIn)
      {
          pwallet = pwalletIn;
          vtxPrev.clear();
          mapValue.clear();
          vOrderForm.clear();
          fTimeReceivedIsTxTime = false;
          nTimeReceived = 0;
          fFromMe = false;
          strFromAccount.clear();
          vfSpent.clear();
          fDebitCached = false;
          fCreditCached = false;
          fAvailableCreditCached = false;
          fChangeCached = false;
          nDebitCached = 0;
          nCreditCached = 0;
          nAvailableCreditCached = 0;
          nChangeCached = 0;
      }
  
      IMPLEMENT_SERIALIZE
      (
          CWalletTx* pthis = const_cast<CWalletTx*>(this);
          if (fRead)
              pthis->Init(NULL);
          char fSpent = false;
  
          if (!fRead)
          {
              pthis->mapValue["fromaccount"] = pthis->strFromAccount;
  
              std::string str;
              BOOST_FOREACH(char f, vfSpent)
              {
                  str += (f ? '1' : '0');
                  if (f)
                      fSpent = true;
              }
              pthis->mapValue["spent"] = str;
          }
  
          nSerSize += SerReadWrite(s, *(CMerkleTx*)this, nType, nVersion,ser_action);
          READWRITE(vtxPrev);
          READWRITE(mapValue);
          READWRITE(vOrderForm);
          READWRITE(fTimeReceivedIsTxTime);
          READWRITE(nTimeReceived);
          READWRITE(fFromMe);
          READWRITE(fSpent);
  
          if (fRead)
          {
              pthis->strFromAccount = pthis->mapValue["fromaccount"];
  
              if (mapValue.count("spent"))
                  BOOST_FOREACH(char c, pthis->mapValue["spent"])
                      pthis->vfSpent.push_back(c != '0');
              else
                  pthis->vfSpent.assign(vout.size(), fSpent);
          }
  
          pthis->mapValue.erase("fromaccount");
          pthis->mapValue.erase("version");
          pthis->mapValue.erase("spent");
      )
  
      // marks certain txout's as spent
      // returns true if any update took place
      bool UpdateSpent(const std::vector<char>& vfNewSpent)
      {
          bool fReturn = false;
          for (unsigned int i = 0; i < vfNewSpent.size(); i++)
          {
              if (i == vfSpent.size())
                  break;
  
              if (vfNewSpent[i] && !vfSpent[i])
              {
                  vfSpent[i] = true;
                  fReturn = true;
                  fAvailableCreditCached = false;
              }
          }
          return fReturn;
      }
  
      // make sure balances are recalculated
      void MarkDirty()
      {
          fCreditCached = false;
          fAvailableCreditCached = false;
          fDebitCached = false;
          fChangeCached = false;
      }
  
      void BindWallet(CWallet *pwalletIn)
      {
          pwallet = pwalletIn;
          MarkDirty();
      }
  
      void MarkSpent(unsigned int nOut)
      {
          if (nOut >= vout.size())
              throw std::runtime_error("CWalletTx::MarkSpent() : nOut out of range");
          vfSpent.resize(vout.size());
          if (!vfSpent[nOut])
          {
              vfSpent[nOut] = true;
              fAvailableCreditCached = false;
          }
      }
  
      void MarkUnspent(unsigned int nOut)
      {
          if (nOut >= vout.size())
              throw std::runtime_error("CWalletTx::MarkUnspent() : nOut out of range");
          vfSpent.resize(vout.size());
          if (vfSpent[nOut])
          {
              vfSpent[nOut] = false;
              fAvailableCreditCached = false;
          }
      }
  
      bool IsSpent(unsigned int nOut) const
      {
          if (nOut >= vout.size())
              throw std::runtime_error("CWalletTx::IsSpent() : nOut out of range");
          if (nOut >= vfSpent.size())
              return false;
          return (!!vfSpent[nOut]);
      }
  
      int64 GetDebit() const
      {
          if (vin.empty())
              return 0;
          if (fDebitCached)
              return nDebitCached;
          nDebitCached = pwallet->GetDebit(*this);
          fDebitCached = true;
          return nDebitCached;
      }
  
      int64 GetCredit(bool fUseCache=true) const
      {
          // Must wait until coinbase is safely deep enough in the chain before valuing it
          if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
              return 0;
  
          // GetBalance can assume transactions in mapWallet won't change
          if (fUseCache && fCreditCached)
              return nCreditCached;
          nCreditCached = pwallet->GetCredit(*this);
          fCreditCached = true;
          return nCreditCached;
      }
  
      int64 GetAvailableCredit(bool fUseCache=true) const
      {
          // Must wait until coinbase is safely deep enough in the chain before valuing it
          if ((IsCoinBase() || IsCoinStake()) && GetBlocksToMaturity() > 0)
              return 0;
  
          if (fUseCache && fAvailableCreditCached)
              return nAvailableCreditCached;
  
          int64 nCredit = 0;
          for (unsigned int i = 0; i < vout.size(); i++)
          {
              if (!IsSpent(i))
              {
                  const CTxOut &txout = vout[i];
                  nCredit += pwallet->GetCredit(txout);
                  if (!MoneyRange(nCredit))
                      throw std::runtime_error("CWalletTx::GetAvailableCredit() : value out of range");
              }
          }
  
          nAvailableCreditCached = nCredit;
          fAvailableCreditCached = true;
          return nCredit;
      }
  
  
      int64 GetChange() const
      {
          if (fChangeCached)
              return nChangeCached;
          nChangeCached = pwallet->GetChange(*this);
          fChangeCached = true;
          return nChangeCached;
      }
  
      void GetAmounts(int64& nGeneratedImmature, int64& nGeneratedMature, std::list<std::pair<CTxDestination, int64> >& listReceived,
                      std::list<std::pair<CTxDestination, int64> >& listSent, int64& nFee, std::string& strSentAccount) const;
  
      void GetAccountAmounts(const std::string& strAccount, int64& nGenerated, int64& nReceived, 
                             int64& nSent, int64& nFee) const;
  
      bool IsFromMe() const
      {
          return (GetDebit() > 0);
      }
  
      bool IsConfirmed() const
      {
          // Quick answer in most cases
          if (!IsFinal())
              return false;
          if (GetDepthInMainChain() >= 1)
              return true;
          if (!IsFromMe()) // using wtx's cached debit
              return false;
  
          // If no confirmations but it's from us, we can still
          // consider it confirmed if all dependencies are confirmed
          std::map<uint256, const CMerkleTx*> mapPrev;
          std::vector<const CMerkleTx*> vWorkQueue;
          vWorkQueue.reserve(vtxPrev.size()+1);
          vWorkQueue.push_back(this);
          for (unsigned int i = 0; i < vWorkQueue.size(); i++)
          {
              const CMerkleTx* ptx = vWorkQueue[i];
  
              if (!ptx->IsFinal())
                  return false;
              if (ptx->GetDepthInMainChain() >= 1)
                  continue;
              if (!pwallet->IsFromMe(*ptx))
                  return false;
  
              if (mapPrev.empty())
              {
                  BOOST_FOREACH(const CMerkleTx& tx, vtxPrev)
                      mapPrev[tx.GetHash()] = &tx;
              }
  
              BOOST_FOREACH(const CTxIn& txin, ptx->vin)
              {
                  if (!mapPrev.count(txin.prevout.hash))
                      return false;
                  vWorkQueue.push_back(mapPrev[txin.prevout.hash]);
              }
          }
          return true;
      }
  
      void SetBurnTxCoords(s32int &blkHeightRet, s32int &txIndexRet, s32int &outTxIndexRet) const
      {
          std::map<uint256, CBlockIndex*>::iterator it = mapBlockIndex.find(hashBlock);
          if (it == mapBlockIndex.end())
              blkHeightRet = -1;
          else
              blkHeightRet = it->second->nHeight;
  
          txIndexRet = nIndex;
          outTxIndexRet = GetBurnOutTxIndex();
  
          return;
      }
  
      bool WriteToDisk(bool fBurnTx = false);
  
      int64 GetTxTime() const;
      int GetRequestCount() const;
  
      void AddSupportingTransactions(CTxDB& txdb);
  
      bool AcceptWalletTransaction(CTxDB& txdb, bool fCheckInputs=true);
      bool AcceptWalletTransaction();
  
      void RelayWalletTransaction(CTxDB& txdb);
      void RelayWalletTransaction();
  };
  
  
  
  
  class COutput
  {
  public:
      const CWalletTx *tx;
      int i;
      int nDepth;
  
      COutput(const CWalletTx *txIn, int iIn, int nDepthIn)
      {
          tx = txIn; i = iIn; nDepth = nDepthIn;
      }
  
      std::string ToString() const
      {
          return strprintf("COutput(%s, %d, %d) [%s]", tx->GetHash().ToString().substr(0,10).c_str(), i, nDepth, FormatMoney(tx->vout[i].nValue).c_str());
      }
  
      void print() const
      {
          printf("%s\n", ToString().c_str());
      }
  };
  
  
  
  
  /** Private key that includes an expiration date in case it never gets used. */
  class CWalletKey
  {
  public:
      CPrivKey vchPrivKey;
      int64 nTimeCreated;
      int64 nTimeExpires;
      std::string strComment;
      //// todo: add something to note what created it (user, getnewaddress, change)
      ////   maybe should have a map<string, string> property map
  
      CWalletKey(int64 nExpires=0)
      {
          nTimeCreated = (nExpires ? GetTime() : 0);
          nTimeExpires = nExpires;
      }
  
      IMPLEMENT_SERIALIZE
      (
          if (!(nType & SER_GETHASH))
              READWRITE(nVersion);
          READWRITE(vchPrivKey);
          READWRITE(nTimeCreated);
          READWRITE(nTimeExpires);
          READWRITE(strComment);
      )
  };
  
  
  
  
  
  
  /** Account information.
   * Stored in wallet with key "acc"+string account name.
   */
  class CAccount
  {
  public:
      CPubKey vchPubKey;
  
      CAccount()
      {
          SetNull();
      }
  
      void SetNull()
      {
          vchPubKey = CPubKey();
      }
  
      IMPLEMENT_SERIALIZE
      (
          if (!(nType & SER_GETHASH))
              READWRITE(nVersion);
          READWRITE(vchPubKey);
      )
  };
  
  
  
  /** Internal transfers.
   * Database key is acentry<account><counter>.
   */
  class CAccountingEntry
  {
  public:
      std::string strAccount;
      int64 nCreditDebit;
      int64 nTime;
      std::string strOtherAccount;
      std::string strComment;
  
      CAccountingEntry()
      {
          SetNull();
      }
  
      void SetNull()
      {
          nCreditDebit = 0;
          nTime = 0;
          strAccount.clear();
          strOtherAccount.clear();
          strComment.clear();
      }
  
      IMPLEMENT_SERIALIZE
      (
          if (!(nType & SER_GETHASH))
              READWRITE(nVersion);
          // Note: strAccount is serialized as part of the key, not here.
          READWRITE(nCreditDebit);
          READWRITE(nTime);
          READWRITE(strOtherAccount);
          READWRITE(strComment);
      )
  };
  
  bool GetWalletFile(CWallet* pwallet, std::string &strWalletFileOut);
  
  #endif
  