text: #include "transactionrecord.h"
  
  #include "base58.h"
  #include "util.h"
  #include "wallet.h"
  #include "darksend.h"
  #include "instantx.h"
  
  #include <stdint.h>
  
  /* Return positive answer if transaction should be shown in list.
   */
  bool TransactionRecord::showTransaction(const CWalletTx &wtx)
  {
      if (wtx.IsCoinBase())
      {
          // Ensures we show generated coins / mined transactions at depth 1
          if (!wtx.IsInMainChain())
          {
              return false;
          }
      }
      return true;
  }
  
  /*
   * Decompose CWallet transaction to model transaction records.
   */
  QList<TransactionRecord> TransactionRecord::decomposeTransaction(const CWallet *wallet, const CWalletTx &wtx)
  {
      QList<TransactionRecord> parts;
      int64_t nTime = wtx.GetTxTime();
      CAmount nCredit = wtx.GetCredit(ISMINE_ALL);
      CAmount nDebit = wtx.GetDebit(ISMINE_ALL);
      CAmount nNet = nCredit - nDebit;
      uint256 hash = wtx.GetHash(), hashPrev = 0;
      std::map<std::string, std::string> mapValue = wtx.mapValue;
  
      if (nNet > 0 || wtx.IsCoinBase() || wtx.IsCoinStake())
      {
          //
          // Credit
          //
          BOOST_FOREACH(const CTxOut& txout, wtx.vout)
          {
              isminetype mine = wallet->IsMine(txout);
              if(mine)
              {
                  TransactionRecord sub(hash, nTime);
                  CTxDestination address;
                  sub.idx = parts.size(); // sequence number
                  sub.credit = txout.nValue;
                  sub.involvesWatchAddress = mine == ISMINE_WATCH_ONLY;
                  if (ExtractDestination(txout.scriptPubKey, address) && IsMine(*wallet, address))
                  {
                      // Received by Bitcoin Address
                      sub.type = TransactionRecord::RecvWithAddress;
                      sub.address = CLocavoreCoincoinAddress(address).ToString();
                  }
                  else
                  {
                      // Received by IP connection (deprecated features), or a multisignature or other non-simple transaction
                      sub.type = TransactionRecord::RecvFromOther;
                      sub.address = mapValue["from"];
                  }
  
                  if (wtx.IsCoinBase())
                  {
                      // Generated (proof-of-work)
                      sub.type = TransactionRecord::Generated;
                  }
                  if (wtx.IsCoinStake())
                  {
                      // Generated (proof-of-stake)
  
                      if (hashPrev == hash)
                          continue; // last coinstake output
                      CAmount nValueOut = 0;
                      BOOST_FOREACH(const CTxOut& txout, wtx.vout)
                      {
                          if (IsMine(*wallet,txout.scriptPubKey))
                              nValueOut += txout.nValue;
                          if (!MoneyRange(txout.nValue) || !MoneyRange(nValueOut))
                              throw std::runtime_error("CTransaction::GetValueOut() : value out of range");
                      }
                      sub.type = TransactionRecord::Generated;
                      sub.credit = nNet > 0 ? nNet : nValueOut - nDebit;
                      hashPrev = hash;
                  }
  
                  parts.append(sub);
              }
          }
      }
      else
      {
          bool fAllFromMeDenom = true;
          int nFromMe = 0;
          bool involvesWatchAddress = false;
          isminetype fAllFromMe = ISMINE_SPENDABLE;
          BOOST_FOREACH(const CTxIn& txin, wtx.vin)
          {
              if(wallet->IsMine(txin)) {
                  fAllFromMeDenom = fAllFromMeDenom && wallet->IsDenominated(txin);
                  nFromMe++;
              }
              isminetype mine = wallet->IsMine(txin);
              if(mine == ISMINE_WATCH_ONLY) involvesWatchAddress = true;
              if(fAllFromMe > mine) fAllFromMe = mine;
          }
  
          isminetype fAllToMe = ISMINE_SPENDABLE;
          bool fAllToMeDenom = true;
          int nToMe = 0;
          BOOST_FOREACH(const CTxOut& txout, wtx.vout) {
              if(wallet->IsMine(txout)) {
                  fAllToMeDenom = fAllToMeDenom && wallet->IsDenominatedAmount(txout.nValue);
                  nToMe++;
              }
              isminetype mine = wallet->IsMine(txout);
              if(mine == ISMINE_WATCH_ONLY) involvesWatchAddress = true;
              if(fAllToMe > mine) fAllToMe = mine;
          }
  
          if(fAllFromMeDenom && fAllToMeDenom && nFromMe * nToMe) {
              parts.append(TransactionRecord(hash, nTime, TransactionRecord::DarksendDenominate, "", -nDebit, nCredit));
              parts.last().involvesWatchAddress = false;   // maybe pass to TransactionRecord as constructor argument
          }
          else if (fAllFromMe && fAllToMe)
          {
          	// Payment to self
          	// TODO: this section still not accurate but covers most cases,
              // might need some additional work however
  
              TransactionRecord sub(hash, nTime);
              // Payment to self by default
              sub.type = TransactionRecord::SendToSelf;
              sub.address = "";
  
              if(mapValue["DS"] == "1")
              {
                  sub.type = TransactionRecord::Darksent;
                  CTxDestination address;
                  if (ExtractDestination(wtx.vout[0].scriptPubKey, address))
                  {
                      // Sent to Dash Address
                      sub.address = CLocavoreCoincoinAddress(address).ToString();
                  }
                  else
                  {
                      // Sent to IP, or other non-address transaction like OP_EVAL
                      sub.address = mapValue["to"];
                  }
              }
              else
              {
                  for (unsigned int nOut = 0; nOut < wtx.vout.size(); nOut++)
                  {
                      const CTxOut& txout = wtx.vout[nOut];
                      sub.idx = parts.size();
  
                      if(wallet->IsCollateralAmount(txout.nValue)) sub.type = TransactionRecord::DarksendMakeCollaterals;
                      if(wallet->IsDenominatedAmount(txout.nValue)) sub.type = TransactionRecord::DarksendCreateDenominations;
                      if(nDebit - wtx.GetValueOut() == DARKSEND_COLLATERAL) sub.type = TransactionRecord::DarksendCollateralPayment;
                  }
              }
  
              CAmount nChange = wtx.GetChange();
  
              sub.debit = -(nDebit - nChange);
              sub.credit = nCredit - nChange;
              parts.append(sub);
              parts.last().involvesWatchAddress = involvesWatchAddress;   // maybe pass to TransactionRecord as constructor argument
  
          }
          else if (fAllFromMe)
          {
              //
              // Debit
              //
              CAmount nTxFee = nDebit - wtx.GetValueOut();
  
              for (unsigned int nOut = 0; nOut < wtx.vout.size(); nOut++)
              {
                  const CTxOut& txout = wtx.vout[nOut];
                  TransactionRecord sub(hash, nTime);
                  sub.idx = parts.size();
                  sub.involvesWatchAddress = involvesWatchAddress;
  
                  if(wallet->IsMine(txout))
                  {
                      // Ignore parts sent to self, as this is usually the change
                      // from a transaction sent back to our own address.
                      continue;
                  }
  
                  CTxDestination address;
                  if (ExtractDestination(txout.scriptPubKey, address))
                  {
                      // Sent to Bitcoin Address
                      sub.type = TransactionRecord::SendToAddress;
                      sub.address = CLocavoreCoincoinAddress(address).ToString();
                  }
                  else
                  {
                      // Sent to IP, or other non-address transaction like OP_EVAL
                      sub.type = TransactionRecord::SendToOther;
                      sub.address = mapValue["to"];
                  }
                  if(mapValue["DS"] == "1")
                  {
                      sub.type = TransactionRecord::Darksent;
                  }
  
                  CAmount nValue = txout.nValue;
                  /* Add fee to first output */
                  if (nTxFee > 0)
                  {
                      nValue += nTxFee;
                      nTxFee = 0;
                  }
                  sub.debit = -nValue;
  
                  parts.append(sub);
              }
          }
          else
          {
              //
              // Mixed debit transaction, can't break down payees
              //
              parts.append(TransactionRecord(hash, nTime, TransactionRecord::Other, "", nNet, 0));
              parts.last().involvesWatchAddress = involvesWatchAddress;
          }
      }
  
      return parts;
  }
  
  void TransactionRecord::updateStatus(const CWalletTx &wtx)
  {
      AssertLockHeld(cs_main);
      // Determine transaction status
  
      // Find the block the tx is in
      CBlockIndex* pindex = NULL;
      std::map<uint256, CBlockIndex*>::iterator mi = mapBlockIndex.find(wtx.hashBlock);
      if (mi != mapBlockIndex.end())
          pindex = (*mi).second;
  
      // Sort order, unrecorded transactions sort to the top
      status.sortKey = strprintf("%010d-%01d-%010u-%03d",
          (pindex ? pindex->nHeight : std::numeric_limits<int>::max()),
          (wtx.IsCoinBase() ? 1 : 0),
          wtx.nTimeReceived,
          idx);
      status.countsForBalance = wtx.IsTrusted() && !(wtx.GetBlocksToMaturity() > 0);
      status.depth = wtx.GetDepthInMainChain();
      status.cur_num_blocks = nBestHeight;
      status.cur_num_ix_locks = nCompleteTXLocks;
  
      if (!IsFinalTx(wtx, nBestHeight + 1))
      {
          if (wtx.nLockTime < LOCKTIME_THRESHOLD)
          {
              status.status = TransactionStatus::OpenUntilBlock;
              status.open_for = wtx.nLockTime - nBestHeight;
          }
          else
          {
              status.status = TransactionStatus::OpenUntilDate;
              status.open_for = wtx.nLockTime;
          }
      }
  
      // For generated transactions, determine maturity
      else if(type == TransactionRecord::Generated)
      {
          if (wtx.GetBlocksToMaturity() > 0)
          {
              status.status = TransactionStatus::Immature;
  
              if (wtx.IsInMainChain())
              {
                  status.matures_in = wtx.GetBlocksToMaturity();
  
                  // Check if the block was requested by anyone
                  if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
                      status.status = TransactionStatus::MaturesWarning;
              }
              else
              {
                  status.status = TransactionStatus::NotAccepted;
              }
          }
          else
          {
              status.status = TransactionStatus::Confirmed;
          }
      }
      else
      {
          if (status.depth < 0)
          {
              status.status = TransactionStatus::Conflicted;
          }
          else if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
          {
              status.status = TransactionStatus::Offline;
          }
          else if (status.depth == 0)
          {
              status.status = TransactionStatus::Unconfirmed;
          }
          else if (status.depth < RecommendedNumConfirmations)
          {
              status.status = TransactionStatus::Confirming;
          }
          else
          {
              status.status = TransactionStatus::Confirmed;
          }
      }
  }
  
  bool TransactionRecord::statusUpdateNeeded()
  {
      AssertLockHeld(cs_main);
      return status.cur_num_blocks != nBestHeight || status.cur_num_ix_locks != nCompleteTXLocks;
  }
  
  QString TransactionRecord::getTxID() const
  {
      return formatSubTxId(hash, idx);
  }
  
  QString TransactionRecord::formatSubTxId(const uint256 &hash, int vout)
  {
      return QString::fromStdString(hash.ToString() + strprintf("-%03d", vout));
  }