MainTradeLoop.cs

public async Task Process()
{
    // Get our current trades.
    var activeTrades = GetCurrentTrades();

    foreach (var trade in activeTrades)
    {
        // Check the exchange to see if we have a buy/sell order open for this trade.
        var orders = GetOpenOrders(trade.Market);

        // If there is already an order open for it, skip this.
        if (orders.Any(x => x.OrderUuid.ToString() == trade.OpenOrderId))
        {
            // There's already an open order for this trade.
            // This means we're still buying it.
            _log($"Already an open order for trade {trade.OpenOrderId}");
        }
        else
        {
            // There's no order, so we can check if this trade can be closed
            if (!CloseTradeIfFulfilled(trade))
            {
                // If it wasn't closed, we can check if it is sellable.
                HandleTrade(trade);
            }
        }
    }

    // As long as we have slots available...
    while (activeTrades.Count < Constants.MaxNumberOfConcurrentTrades)
    {
        // Check if we can find a suitable trade candidate
        var trade = StartTrade(activeTrades);

        // We found a trade!
        if (trade != null)
        {
            // Add this to activeTrades so we don't trigger the same trade again.
            activeTrades.Add(trade);
        }
        else
        {
            // No more trade to be found, let's end the loop.
            break;
        }
    }

    // Update our trades in the database.
    UpdateTrades(activeTrades);
}