concept G22TradingStrategy extends ConceptWithChangeListeners {
  settable bool verbose;
  
  gettable S globalID = aGlobalID();
  
  // link to market (optional)
  transient settable IFuturesMarket market;
  
  settableWithVar S cryptoCoin;
  settableWithVar S marginCoin = "USDT";
  settableWithVar bool usingLiveData;
  settableWithVar bool doingRealTrades;
  
  settableWithVar double adversity = 0.2;
  
  settableWithVar new LS log;
  
  // increment of crypto we can bet on
  settableWithVar double cryptoStep = 0.0001;
  
  // minimum crypto we need to bet on
  settableWithVar double minCrypto = 0.0001;
  
  swappable long currentTime() { ret now(); }
  
  void log(O o) {
    if (o != null)
      log.add(print(str(o)));
  }
}