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.
  
  #if defined(HAVE_CONFIG_H)
  #include "config/asocoin-config.h"
  #endif
  
  #include "optionsmodel.h"
  
  #include "bitcoinunits.h"
  #include "guiutil.h"
  
  #include "amount.h"
  #include "init.h"
  #include "main.h"
  #include "net.h"
  #include "txdb.h" // for -dbcache defaults
  
  #ifdef ENABLE_WALLET
  #include "masternodeconfig.h"
  #include "wallet.h"
  #include "walletdb.h"
  #endif
  
  #include <QNetworkProxy>
  #include <QSettings>
  #include <QStringList>
  
  OptionsModel::OptionsModel(QObject* parent) : QAbstractListModel(parent)
  {
      Init();
  }
  
  void OptionsModel::addOverriddenOption(const std::string& option)
  {
      strOverriddenByCommandLine += QString::fromStdString(option) + "=" + QString::fromStdString(mapArgs[option]) + " ";
  }
  
  // Writes all missing QSettings with their default values
  void OptionsModel::Init()
  {
      resetSettings = false;
      QSettings settings;
  
      // Ensure restart flag is unset on client startup
      setRestartRequired(false);
  
      // These are Qt-only settings:
  
      // Window
      if (!settings.contains("fMinimizeToTray"))
          settings.setValue("fMinimizeToTray", false);
      fMinimizeToTray = settings.value("fMinimizeToTray").toBool();
  
      if (!settings.contains("fMinimizeOnClose"))
          settings.setValue("fMinimizeOnClose", false);
      fMinimizeOnClose = settings.value("fMinimizeOnClose").toBool();
  
      // Display
      if (!settings.contains("nDisplayUnit"))
          settings.setValue("nDisplayUnit", BitcoinUnits::asocoin);
      nDisplayUnit = settings.value("nDisplayUnit").toInt();
  
      if (!settings.contains("strThirdPartyTxUrls"))
          settings.setValue("strThirdPartyTxUrls", "");
      strThirdPartyTxUrls = settings.value("strThirdPartyTxUrls", "").toString();
  
      if (!settings.contains("fCoinControlFeatures"))
          settings.setValue("fCoinControlFeatures", false);
      fCoinControlFeatures = settings.value("fCoinControlFeatures", false).toBool();
  
      if (!settings.contains("nPreferredDenom"))
          settings.setValue("nPreferredDenom", 0);
      nPreferredDenom = settings.value("nPreferredDenom", "0").toLongLong();
      if (!settings.contains("nZeromintPercentage"))
          settings.setValue("nZeromintPercentage", 10);
      nZeromintPercentage = settings.value("nZeromintPercentage").toLongLong();
  
      if (!settings.contains("nAnonymizeasocoinAmount"))
          settings.setValue("nAnonymizeasocoinAmount", 1000);
  
      nAnonymizeasocoinAmount = settings.value("nAnonymizeasocoinAmount").toLongLong();
  
      if (!settings.contains("fShowMasternodesTab"))
          settings.setValue("fShowMasternodesTab", masternodeConfig.getCount());
  
      // These are shared with the core or have a command-line parameter
      // and we want command-line parameters to overwrite the GUI settings.
      //
      // If setting doesn't exist create it with defaults.
      //
      // If SoftSetArg() or SoftSetBoolArg() return false we were overridden
      // by command-line and show this in the UI.
  
      // Main
      if (!settings.contains("nDatabaseCache"))
          settings.setValue("nDatabaseCache", (qint64)nDefaultDbCache);
      if (!SoftSetArg("-dbcache", settings.value("nDatabaseCache").toString().toStdString()))
          addOverriddenOption("-dbcache");
  
      if (!settings.contains("nThreadsScriptVerif"))
          settings.setValue("nThreadsScriptVerif", DEFAULT_SCRIPTCHECK_THREADS);
      if (!SoftSetArg("-par", settings.value("nThreadsScriptVerif").toString().toStdString()))
          addOverriddenOption("-par");
  
  // Wallet
  #ifdef ENABLE_WALLET
      if (!settings.contains("bSpendZeroConfChange"))
          settings.setValue("bSpendZeroConfChange", false);
      if (!SoftSetBoolArg("-spendzeroconfchange", settings.value("bSpendZeroConfChange").toBool()))
          addOverriddenOption("-spendzeroconfchange");
  #endif
  
      // Network
      if (!settings.contains("fUseUPnP"))
          settings.setValue("fUseUPnP", DEFAULT_UPNP);
      if (!SoftSetBoolArg("-upnp", settings.value("fUseUPnP").toBool()))
          addOverriddenOption("-upnp");
  
      if (!settings.contains("fListen"))
          settings.setValue("fListen", DEFAULT_LISTEN);
      if (!SoftSetBoolArg("-listen", settings.value("fListen").toBool()))
          addOverriddenOption("-listen");
  
      if (!settings.contains("fUseProxy"))
          settings.setValue("fUseProxy", false);
      if (!settings.contains("addrProxy"))
          settings.setValue("addrProxy", "127.0.0.1:9050");
      // Only try to set -proxy, if user has enabled fUseProxy
      if (settings.value("fUseProxy").toBool() && !SoftSetArg("-proxy", settings.value("addrProxy").toString().toStdString()))
          addOverriddenOption("-proxy");
      else if (!settings.value("fUseProxy").toBool() && !GetArg("-proxy", "").empty())
          addOverriddenOption("-proxy");
  
      // Display
      if (!settings.contains("digits"))
          settings.setValue("digits", "2");
      if (!settings.contains("theme"))
          settings.setValue("theme", "");
      if (!settings.contains("fCSSexternal"))
          settings.setValue("fCSSexternal", false);
      if (!settings.contains("language"))
          settings.setValue("language", "");
      if (!SoftSetArg("-lang", settings.value("language").toString().toStdString()))
          addOverriddenOption("-lang");
  
      if (settings.contains("nZeromintPercentage"))
          SoftSetArg("-zeromintpercentage", settings.value("nZeromintPercentage").toString().toStdString());
      if (settings.contains("nPreferredDenom"))
          SoftSetArg("-preferredDenom", settings.value("nPreferredDenom").toString().toStdString());
      if (settings.contains("nAnonymizeasocoinAmount"))
          SoftSetArg("-anonymizeasocoinamount", settings.value("nAnonymizeasocoinAmount").toString().toStdString());
  
      language = settings.value("language").toString();
  }
  
  void OptionsModel::Reset()
  {
      QSettings settings;
  
      // Remove all entries from our QSettings object
      settings.clear();
      resetSettings = true; // Needed in asocoin.cpp during shotdown to also remove the window positions
  
      // default setting for OptionsModel::StartAtStartup - disabled
      if (GUIUtil::GetStartOnSystemStartup())
          GUIUtil::SetStartOnSystemStartup(false);
  }
  
  int OptionsModel::rowCount(const QModelIndex& parent) const
  {
      return OptionIDRowCount;
  }
  
  // read QSettings values and return them
  QVariant OptionsModel::data(const QModelIndex& index, int role) const
  {
      if (role == Qt::EditRole) {
          QSettings settings;
          switch (index.row()) {
          case StartAtStartup:
              return GUIUtil::GetStartOnSystemStartup();
          case MinimizeToTray:
              return fMinimizeToTray;
          case MapPortUPnP:
  #ifdef USE_UPNP
              return settings.value("fUseUPnP");
  #else
              return false;
  #endif
          case MinimizeOnClose:
              return fMinimizeOnClose;
  
          // default proxy
          case ProxyUse:
              return settings.value("fUseProxy", false);
          case ProxyIP: {
              // contains IP at index 0 and port at index 1
              QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
              return strlIpPort.at(0);
          }
          case ProxyPort: {
              // contains IP at index 0 and port at index 1
              QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
              return strlIpPort.at(1);
          }
  
  #ifdef ENABLE_WALLET
          case SpendZeroConfChange:
              return settings.value("bSpendZeroConfChange");
          case ShowMasternodesTab:
              return settings.value("fShowMasternodesTab");
  #endif
          case DisplayUnit:
              return nDisplayUnit;
          case ThirdPartyTxUrls:
              return strThirdPartyTxUrls;
          case Digits:
              return settings.value("digits");
          case Theme:
              return settings.value("theme");
          case Language:
              return settings.value("language");
          case CoinControlFeatures:
              return fCoinControlFeatures;
          case DatabaseCache:
              return settings.value("nDatabaseCache");
          case ThreadsScriptVerif:
              return settings.value("nThreadsScriptVerif");
          case ZeromintPercentage:
              return QVariant(nZeromintPercentage);
          case ZeromintPrefDenom:
              return QVariant(nPreferredDenom);
          case AnonymizeasocoinAmount:
              return QVariant(nAnonymizeasocoinAmount);
          case Listen:
              return settings.value("fListen");
          default:
              return QVariant();
          }
      }
      return QVariant();
  }
  
  // write QSettings values
  bool OptionsModel::setData(const QModelIndex& index, const QVariant& value, int role)
  {
      bool successful = true; /* set to false on parse error */
      if (role == Qt::EditRole) {
          QSettings settings;
          switch (index.row()) {
          case StartAtStartup:
              successful = GUIUtil::SetStartOnSystemStartup(value.toBool());
              break;
          case MinimizeToTray:
              fMinimizeToTray = value.toBool();
              settings.setValue("fMinimizeToTray", fMinimizeToTray);
              break;
          case MapPortUPnP: // core option - can be changed on-the-fly
              settings.setValue("fUseUPnP", value.toBool());
              MapPort(value.toBool());
              break;
          case MinimizeOnClose:
              fMinimizeOnClose = value.toBool();
              settings.setValue("fMinimizeOnClose", fMinimizeOnClose);
              break;
  
          // default proxy
          case ProxyUse:
              if (settings.value("fUseProxy") != value) {
                  settings.setValue("fUseProxy", value.toBool());
                  setRestartRequired(true);
              }
              break;
          case ProxyIP: {
              // contains current IP at index 0 and current port at index 1
              QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
              // if that key doesn't exist or has a changed IP
              if (!settings.contains("addrProxy") || strlIpPort.at(0) != value.toString()) {
                  // construct new value from new IP and current port
                  QString strNewValue = value.toString() + ":" + strlIpPort.at(1);
                  settings.setValue("addrProxy", strNewValue);
                  setRestartRequired(true);
              }
          } break;
          case ProxyPort: {
              // contains current IP at index 0 and current port at index 1
              QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
              // if that key doesn't exist or has a changed port
              if (!settings.contains("addrProxy") || strlIpPort.at(1) != value.toString()) {
                  // construct new value from current IP and new port
                  QString strNewValue = strlIpPort.at(0) + ":" + value.toString();
                  settings.setValue("addrProxy", strNewValue);
                  setRestartRequired(true);
              }
          } break;
  #ifdef ENABLE_WALLET
          case SpendZeroConfChange:
              if (settings.value("bSpendZeroConfChange") != value) {
                  settings.setValue("bSpendZeroConfChange", value);
                  setRestartRequired(true);
              }
              break;
          case ShowMasternodesTab:
              if (settings.value("fShowMasternodesTab") != value) {
                  settings.setValue("fShowMasternodesTab", value);
                  setRestartRequired(true);
              }
              break;
  #endif
          case DisplayUnit:
              setDisplayUnit(value);
              break;
          case ThirdPartyTxUrls:
              if (strThirdPartyTxUrls != value.toString()) {
                  strThirdPartyTxUrls = value.toString();
                  settings.setValue("strThirdPartyTxUrls", strThirdPartyTxUrls);
                  setRestartRequired(true);
              }
              break;
          case Digits:
              if (settings.value("digits") != value) {
                  settings.setValue("digits", value);
                  setRestartRequired(true);
              }
              break;
          case Theme:
              if (settings.value("theme") != value) {
                  settings.setValue("theme", value);
                  setRestartRequired(true);
              }
              break;
          case Language:
              if (settings.value("language") != value) {
                  settings.setValue("language", value);
                  setRestartRequired(true);
              }
              break;
          case ZeromintPercentage:
              nZeromintPercentage = value.toInt();
              settings.setValue("nZeromintPercentage", nZeromintPercentage);
              emit zeromintPercentageChanged(nZeromintPercentage);
              break;
          case ZeromintPrefDenom:
              nPreferredDenom = value.toInt();
              settings.setValue("nPreferredDenom", nPreferredDenom);
              emit preferredDenomChanged(nPreferredDenom);
              break;
  
          case AnonymizeasocoinAmount:
              nAnonymizeasocoinAmount = value.toInt();
              settings.setValue("nAnonymizeasocoinAmount", nAnonymizeasocoinAmount);
              emit anonymizeasocoinAmountChanged(nAnonymizeasocoinAmount);
              break;
          case CoinControlFeatures:
              fCoinControlFeatures = value.toBool();
              settings.setValue("fCoinControlFeatures", fCoinControlFeatures);
              emit coinControlFeaturesChanged(fCoinControlFeatures);
              break;
          case DatabaseCache:
              if (settings.value("nDatabaseCache") != value) {
                  settings.setValue("nDatabaseCache", value);
                  setRestartRequired(true);
              }
              break;
          case ThreadsScriptVerif:
              if (settings.value("nThreadsScriptVerif") != value) {
                  settings.setValue("nThreadsScriptVerif", value);
                  setRestartRequired(true);
              }
              break;
          case Listen:
              if (settings.value("fListen") != value) {
                  settings.setValue("fListen", value);
                  setRestartRequired(true);
              }
              break;
          default:
              break;
          }
      }
  
      emit dataChanged(index, index);
  
      return successful;
  }
  
  /** Updates current unit in memory, settings and emits displayUnitChanged(newUnit) signal */
  void OptionsModel::setDisplayUnit(const QVariant& value)
  {
      if (!value.isNull()) {
          QSettings settings;
          nDisplayUnit = value.toInt();
          settings.setValue("nDisplayUnit", nDisplayUnit);
          emit displayUnitChanged(nDisplayUnit);
      }
  }
  
  bool OptionsModel::getProxySettings(QNetworkProxy& proxy) const
  {
      // Directly query current base proxy, because
      // GUI settings can be overridden with -proxy.
      proxyType curProxy;
      if (GetProxy(NET_IPV4, curProxy)) {
          proxy.setType(QNetworkProxy::Socks5Proxy);
          proxy.setHostName(QString::fromStdString(curProxy.proxy.ToStringIP()));
          proxy.setPort(curProxy.proxy.GetPort());
  
          return true;
      } else
          proxy.setType(QNetworkProxy::NoProxy);
  
      return false;
  }
  
  void OptionsModel::setRestartRequired(bool fRequired)
  {
      QSettings settings;
      return settings.setValue("fRestartRequired", fRequired);
  }
  
  bool OptionsModel::isRestartRequired()
  {
      QSettings settings;
      return settings.value("fRestartRequired", false).toBool();
  }
  