text: // Copyright (c) 2011-2014 The Bitcoin developers
  // Copyright (c) 2014-2015 The Dash developers
  // Copyright (c) 2015-2017 The PIVX developers
  // Distributed under the MIT/X11 software license, see the accompanying
  // file COPYING or http://www.opensource.org/licenses/mit-license.php.
  
  #include "transactiondesc.h"
  
  #include "bitcoinunits.h"
  #include "guiutil.h"
  #include "paymentserver.h"
  #include "transactionrecord.h"
  
  #include "base58.h"
  #include "db.h"
  #include "main.h"
  #include "script/script.h"
  #include "timedata.h"
  #include "ui_interface.h"
  #include "util.h"
  #include "wallet.h"
  
  #include <stdint.h>
  #include <string>
  
  using namespace std;
  
  QString TransactionDesc::FormatTxStatus(const CWalletTx& wtx)
  {
      AssertLockHeld(cs_main);
      if (!IsFinalTx(wtx, chainActive.Height() + 1)) {
          if (wtx.nLockTime < LOCKTIME_THRESHOLD)
              return tr("Open for %n more block(s)", "", wtx.nLockTime - chainActive.Height());
          else
              return tr("Open until %1").arg(GUIUtil::dateTimeStr(wtx.nLockTime));
      } else {
          int signatures = wtx.GetTransactionLockSignatures();
          QString strUsingIX = "";
          if (signatures >= 0) {
              if (signatures >= SWIFTTX_SIGNATURES_REQUIRED) {
                  int nDepth = wtx.GetDepthInMainChain();
                  if (nDepth < 0)
                      return tr("conflicted");
                  else if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
                      return tr("%1/offline (verified via SwiftX)").arg(nDepth);
                  else if (nDepth < 6)
                      return tr("%1/confirmed (verified via SwiftX)").arg(nDepth);
                  else
                      return tr("%1 confirmations (verified via SwiftX)").arg(nDepth);
              } else {
                  if (!wtx.IsTransactionLockTimedOut()) {
                      int nDepth = wtx.GetDepthInMainChain();
                      if (nDepth < 0)
                          return tr("conflicted");
                      else if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
                          return tr("%1/offline (SwiftX verification in progress - %2 of %3 signatures)").arg(nDepth).arg(signatures).arg(SWIFTTX_SIGNATURES_TOTAL);
                      else if (nDepth < 6)
                          return tr("%1/confirmed (SwiftX verification in progress - %2 of %3 signatures )").arg(nDepth).arg(signatures).arg(SWIFTTX_SIGNATURES_TOTAL);
                      else
                          return tr("%1 confirmations (SwiftX verification in progress - %2 of %3 signatures)").arg(nDepth).arg(signatures).arg(SWIFTTX_SIGNATURES_TOTAL);
                  } else {
                      int nDepth = wtx.GetDepthInMainChain();
                      if (nDepth < 0)
                          return tr("conflicted");
                      else if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
                          return tr("%1/offline (SwiftX verification failed)").arg(nDepth);
                      else if (nDepth < 6)
                          return tr("%1/confirmed (SwiftX verification failed)").arg(nDepth);
                      else
                          return tr("%1 confirmations").arg(nDepth);
                  }
              }
          } else {
              int nDepth = wtx.GetDepthInMainChain();
              if (nDepth < 0)
                  return tr("conflicted");
              else if (GetAdjustedTime() - wtx.nTimeReceived > 2 * 60 && wtx.GetRequestCount() == 0)
                  return tr("%1/offline").arg(nDepth);
              else if (nDepth < 6)
                  return tr("%1/unconfirmed").arg(nDepth);
              else
                  return tr("%1 confirmations").arg(nDepth);
          }
      }
  }
  
  QString TransactionDesc::toHTML(CWallet* wallet, CWalletTx& wtx, TransactionRecord* rec, int unit)
  {
      QString strHTML;
  
      LOCK2(cs_main, wallet->cs_wallet);
      strHTML.reserve(4000);
      strHTML += "<html><font face='verdana, arial, helvetica, sans-serif'>";
  
      int64_t nTime = wtx.GetTxTime();
      CAmount nCredit = wtx.GetCredit(ISMINE_ALL);
      CAmount nDebit = wtx.GetDebit(ISMINE_ALL);
      CAmount nNet = nCredit - nDebit;
  
      strHTML += "<b>" + tr("Status") + ":</b> " + FormatTxStatus(wtx);
      int nRequests = wtx.GetRequestCount();
      if (nRequests != -1) {
          if (nRequests == 0)
              strHTML += tr(", has not been successfully broadcast yet");
          else if (nRequests > 0)
              strHTML += tr(", broadcast through %n node(s)", "", nRequests);
      }
      strHTML += "<br>";
  
      strHTML += "<b>" + tr("Date") + ":</b> " + (nTime ? GUIUtil::dateTimeStr(nTime) : "") + "<br>";
  
      //
      // From
      //
      if (wtx.IsCoinBase()) {
          strHTML += "<b>" + tr("Source") + ":</b> " + tr("Generated") + "<br>";
      } else if (wtx.mapValue.count("from") && !wtx.mapValue["from"].empty()) {
          // Online transaction
          strHTML += "<b>" + tr("From") + ":</b> " + GUIUtil::HtmlEscape(wtx.mapValue["from"]) + "<br>";
      } else {
          // Offline transaction
          if (nNet > 0) {
              // Credit
              if (CBitcoinAddress(rec->address).IsValid()) {
                  CTxDestination address = CBitcoinAddress(rec->address).Get();
                  if (wallet->mapAddressBook.count(address)) {
                      strHTML += "<b>" + tr("From") + ":</b> " + tr("unknown") + "<br>";
                      strHTML += "<b>" + tr("To") + ":</b> ";
                      strHTML += GUIUtil::HtmlEscape(rec->address);
                      QString addressOwned = (::IsMine(*wallet, address) == ISMINE_SPENDABLE) ? tr("own address") : tr("watch-only");
                      if (!wallet->mapAddressBook[address].name.empty())
                          strHTML += " (" + addressOwned + ", " + tr("label") + ": " + GUIUtil::HtmlEscape(wallet->mapAddressBook[address].name) + ")";
                      else
                          strHTML += " (" + addressOwned + ")";
                      strHTML += "<br>";
                  }
              }
          }
      }
  
      //
      // To
      //
      if (wtx.mapValue.count("to") && !wtx.mapValue["to"].empty()) {
          // Online transaction
          std::string strAddress = wtx.mapValue["to"];
          strHTML += "<b>" + tr("To") + ":</b> ";
          CTxDestination dest = CBitcoinAddress(strAddress).Get();
          if (wallet->mapAddressBook.count(dest) && !wallet->mapAddressBook[dest].name.empty())
              strHTML += GUIUtil::HtmlEscape(wallet->mapAddressBook[dest].name) + " ";
          strHTML += GUIUtil::HtmlEscape(strAddress) + "<br>";
      }
  
      //
      // Amount
      //
      if (wtx.IsCoinBase() && nCredit == 0) {
          //
          // Coinbase
          //
          CAmount nUnmatured = 0;
          BOOST_FOREACH (const CTxOut& txout, wtx.vout)
              nUnmatured += wallet->GetCredit(txout, ISMINE_ALL);
          strHTML += "<b>" + tr("Credit") + ":</b> ";
          if (wtx.IsInMainChain())
              strHTML += BitcoinUnits::formatHtmlWithUnit(unit, nUnmatured) + " (" + tr("matures in %n more block(s)", "", wtx.GetBlocksToMaturity()) + ")";
          else
              strHTML += "(" + tr("not accepted") + ")";
          strHTML += "<br>";
      } else if (nNet > 0) {
          //
          // Credit
          //
          strHTML += "<b>" + tr("Credit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, nNet) + "<br>";
      } else {
          isminetype fAllFromMe = ISMINE_SPENDABLE;
          BOOST_FOREACH (const CTxIn& txin, wtx.vin) {
              isminetype mine = wallet->IsMine(txin);
              if (fAllFromMe > mine) fAllFromMe = mine;
          }
  
          isminetype fAllToMe = ISMINE_SPENDABLE;
          BOOST_FOREACH (const CTxOut& txout, wtx.vout) {
              isminetype mine = wallet->IsMine(txout);
              if (fAllToMe > mine) fAllToMe = mine;
          }
  
          if (fAllFromMe) {
              if (fAllFromMe == ISMINE_WATCH_ONLY)
                  strHTML += "<b>" + tr("From") + ":</b> " + tr("watch-only") + "<br>";
  
              //
              // Debit
              //
              BOOST_FOREACH (const CTxOut& txout, wtx.vout) {
                  // Ignore change
                  isminetype toSelf = wallet->IsMine(txout);
                  if ((toSelf == ISMINE_SPENDABLE) && (fAllFromMe == ISMINE_SPENDABLE))
                      continue;
  
                  if (!wtx.mapValue.count("to") || wtx.mapValue["to"].empty()) {
                      // Offline transaction
                      CTxDestination address;
                      if (ExtractDestination(txout.scriptPubKey, address)) {
                          strHTML += "<b>" + tr("To") + ":</b> ";
                          if (wallet->mapAddressBook.count(address) && !wallet->mapAddressBook[address].name.empty())
                              strHTML += GUIUtil::HtmlEscape(wallet->mapAddressBook[address].name) + " ";
                          strHTML += GUIUtil::HtmlEscape(CBitcoinAddress(address).ToString());
                          if (toSelf == ISMINE_SPENDABLE)
                              strHTML += " (own address)";
                          else if (toSelf == ISMINE_WATCH_ONLY)
                              strHTML += " (watch-only)";
                          strHTML += "<br>";
                      }
                  }
  
                  strHTML += "<b>" + tr("Debit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, -txout.nValue) + "<br>";
                  if (toSelf)
                      strHTML += "<b>" + tr("Credit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, txout.nValue) + "<br>";
              }
  
              if (fAllToMe) {
                  // Payment to self
                  CAmount nChange = wtx.GetChange();
                  CAmount nValue = nCredit - nChange;
                  strHTML += "<b>" + tr("Total debit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, -nValue) + "<br>";
                  strHTML += "<b>" + tr("Total credit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, nValue) + "<br>";
              }
  
              CAmount nTxFee = nDebit - wtx.GetValueOut();
              if (nTxFee > 0)
                  strHTML += "<b>" + tr("Transaction fee") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, -nTxFee) + "<br>";
          } else {
              //
              // Mixed debit transaction
              //
              BOOST_FOREACH (const CTxIn& txin, wtx.vin)
                  if (wallet->IsMine(txin))
                      strHTML += "<b>" + tr("Debit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, -wallet->GetDebit(txin, ISMINE_ALL)) + "<br>";
              BOOST_FOREACH (const CTxOut& txout, wtx.vout)
                  if (wallet->IsMine(txout))
                      strHTML += "<b>" + tr("Credit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, wallet->GetCredit(txout, ISMINE_ALL)) + "<br>";
          }
      }
  
      strHTML += "<b>" + tr("Net amount") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, nNet, true) + "<br>";
  
      //
      // Message
      //
      if (wtx.mapValue.count("message") && !wtx.mapValue["message"].empty())
          strHTML += "<br><b>" + tr("Message") + ":</b><br>" + GUIUtil::HtmlEscape(wtx.mapValue["message"], true) + "<br>";
      if (wtx.mapValue.count("comment") && !wtx.mapValue["comment"].empty())
          strHTML += "<br><b>" + tr("Comment") + ":</b><br>" + GUIUtil::HtmlEscape(wtx.mapValue["comment"], true) + "<br>";
  
      strHTML += "<b>" + tr("Transaction ID") + ":</b> " + rec->getTxID() + "<br>";
      strHTML += "<b>" + tr("Output index") + ":</b> " + QString::number(rec->getOutputIndex()) + "<br>";
  
      // Message from normal nodexchange:URI (nodexchange:XyZ...?message=example)
      foreach (const PAIRTYPE(string, string) & r, wtx.vOrderForm)
          if (r.first == "Message")
              strHTML += "<br><b>" + tr("Message") + ":</b><br>" + GUIUtil::HtmlEscape(r.second, true) + "<br>";
  
      //
      // PaymentRequest info:
      //
      foreach (const PAIRTYPE(string, string) & r, wtx.vOrderForm) {
          if (r.first == "PaymentRequest") {
              PaymentRequestPlus req;
              req.parse(QByteArray::fromRawData(r.second.data(), r.second.size()));
              QString merchant;
              if (req.getMerchant(PaymentServer::getCertStore(), merchant))
                  strHTML += "<b>" + tr("Merchant") + ":</b> " + GUIUtil::HtmlEscape(merchant) + "<br>";
          }
      }
  
      if (wtx.IsCoinBase()) {
          quint32 numBlocksToMaturity = Params().COINBASE_MATURITY() + 1;
          strHTML += "<br>" + tr("Generated coins must mature %1 blocks before they can be spent. When you generated this block, it was broadcast to the network to be added to the block chain. If it fails to get into the chain, its state will change to \"not accepted\" and it won't be spendable. This may occasionally happen if another node generates a block within a few seconds of yours.").arg(QString::number(numBlocksToMaturity)) + "<br>";
      }
  
      //
      // Debug view
      //
      if (fDebug) {
          strHTML += "<hr><br>" + tr("Debug information") + "<br><br>";
          BOOST_FOREACH (const CTxIn& txin, wtx.vin)
              if (wallet->IsMine(txin))
                  strHTML += "<b>" + tr("Debit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, -wallet->GetDebit(txin, ISMINE_ALL)) + "<br>";
          BOOST_FOREACH (const CTxOut& txout, wtx.vout)
              if (wallet->IsMine(txout))
                  strHTML += "<b>" + tr("Credit") + ":</b> " + BitcoinUnits::formatHtmlWithUnit(unit, wallet->GetCredit(txout, ISMINE_ALL)) + "<br>";
  
          strHTML += "<br><b>" + tr("Transaction") + ":</b><br>";
          strHTML += GUIUtil::HtmlEscape(wtx.ToString(), true);
  
          strHTML += "<br><b>" + tr("Inputs") + ":</b>";
          strHTML += "<ul>";
  
          BOOST_FOREACH (const CTxIn& txin, wtx.vin) {
              COutPoint prevout = txin.prevout;
  
              CCoins prev;
              if (pcoinsTip->GetCoins(prevout.hash, prev)) {
                  if (prevout.n < prev.vout.size()) {
                      strHTML += "<li>";
                      const CTxOut& vout = prev.vout[prevout.n];
                      CTxDestination address;
                      if (ExtractDestination(vout.scriptPubKey, address)) {
                          if (wallet->mapAddressBook.count(address) && !wallet->mapAddressBook[address].name.empty())
                              strHTML += GUIUtil::HtmlEscape(wallet->mapAddressBook[address].name) + " ";
                          strHTML += QString::fromStdString(CBitcoinAddress(address).ToString());
                      }
                      strHTML = strHTML + " " + tr("Amount") + "=" + BitcoinUnits::formatHtmlWithUnit(unit, vout.nValue);
                      strHTML = strHTML + " IsMine=" + (wallet->IsMine(vout) & ISMINE_SPENDABLE ? tr("true") : tr("false"));
                      strHTML = strHTML + " IsWatchOnly=" + (wallet->IsMine(vout) & ISMINE_WATCH_ONLY ? tr("true") : tr("false")) + "</li>";
                  }
              }
          }
  
          strHTML += "</ul>";
      }
  
      strHTML += "</font></html>";
      return strHTML;
  }
  