private Position ToCommonPosition(ApiPosition position)
{
return(new Position
{
AccountId = AccountInfo.ID,
BrokerName = Name,
DataFeedName = Name,
Symbol = position.CurrencyPair.ToString(),
Quantity = position.Size,
Profit = position.PL,
PositionSide = ToCommonPositionSide(position.Side),
CurrentPrice = position.BasePrice, //price per coin
Price = position.Total //position value (price * quantity)
});
}
private async Task UpdatePositions()
{
bool anyPosUpdated = false;
var closedPositions = new List <CurrencyPair>();
if (_isMarginAccount == true)
{
List <ApiPosition> positions = null;
try { positions = await _api.Trading.GetMarginPositions(); }
catch (Exception e)
{
var error = $"Failed to retrieve positions from {Name}: {e.Message}";
System.Diagnostics.Trace.TraceError(error); //OnError(error);
}
_previousUpdates[UpdateDataType.Positions] = DateTime.UtcNow;
if (positions != null && positions.Count > 0)
{
//add or update existing positions
foreach (var pos in positions)
{
if (!_positions.ContainsKey(pos.CurrencyPair) ||
_positions[pos.CurrencyPair].Size != pos.Size)
{
_positions[pos.CurrencyPair] = pos;
anyPosUpdated = true;
}
}
//mark closed positions
foreach (var item in _positions)
{
if (!positions.Any(p => p.CurrencyPair == item.Key))
{
closedPositions.Add(item.Key);
}
}
}
}
else //optional: simply retrieve currency balances and process them as positions
{
List <PoloniexAPI.WalletTools.Balance> balances = null;
try { balances = await _api.Wallet.GetBalances(); }
catch { }
if (balances != null && balances.Count > 0)
{
var baseCur = AccountInfo?.Currency ?? Currency;
//add or update existing positions
foreach (var b in balances)
{
if (baseCur == b.Currency) //that would be 'balance'
{
AccountInfo.Balance = b.QuoteAvailable;
AccountInfo.Equity = 0;
AccountInfo.Margin = 0;
AccountInfo.Profit = 0;
OnAccountStateChanged();
continue;
}
if (b.QuoteAvailable <= 0M)
{
continue;
}
var key = new CurrencyPair(baseCur, b.Currency);
if (!_positions.ContainsKey(key) || _positions[key].Size != b.QuoteAvailable)
{
_positions[key] = new ApiPosition
{
CurrencyPair = key,
Side = PositionSide.Long,
Size = b.QuoteAvailable
};
anyPosUpdated = true;
}
}
//mark closed positions
foreach (var item in _positions)
{
var b = balances.FirstOrDefault(i => i.Currency == item.Key.QuoteCurrency);
if (b == null || b.QuoteAvailable <= 0M)
{
closedPositions.Add(item.Key);
}
}
}
}
//remove closed positions
foreach (var symbol in closedPositions)
{
_positions.Remove(symbol);
}
if (anyPosUpdated || closedPositions.Count > 0)
{
OnPositionsChanged(_positions.Select(p => ToCommonPosition(p.Value)).ToList());
}
}
