internal async Task <ExchangeOrder> BuyLimitOrderAsync(TradeSession tradeSession, decimal amount, decimal price)
{
var executedOrder = await _exchange.BuyLimitOrderAsync(tradeSession.PairCode, amount, price);
if (executedOrder.Id == 0)
{
throw new Exception("Buy order not executed (order id = 0)");
}
BuyLimitOrderPlaced?.Invoke(this, new BitstampOrderEventArgs(executedOrder));
tradeSession.LastBuyTimestamp = DateTime.Now;
return(executedOrder);
}