public async Task <Domain.Position> GetOrCreateEmptyPosition(Domain.StrategysStock strategysStock)
{
var strategysStockDb = GetStatagysStockFromDb(strategysStock);
if (strategysStockDb == null)
{
_context.StratagysStocks.Add(new StratagysStock
{
StockSymbol = strategysStock.StockSymbol,
Strategy = strategysStock.Strategy,
TradingFrequency = strategysStock.TradingFrequency
});
await _context.SaveChangesAsync();
strategysStockDb = GetStatagysStockFromDb(strategysStock);
}
return(new Domain.Position
{
StockSymbol = strategysStockDb.StockSymbol,
NumberOfShares = strategysStockDb?.Orders
?.Select(x => x.ActualSharesBought ?? 0)
?.Aggregate((x, y) => x + y) ?? 0
});
}
public IEnumerable <Domain.Order> GetCompletedOrders(Domain.StrategysStock strategysStock)
=> GetStatagysStockFromDb(strategysStock)?.Orders
?.Where(x => x.ActualCostPerShare.HasValue && x.ActualSharesBought.HasValue)
?.Select(x => new Domain.Order
{
MarketPrice = x.ActualCostPerShare.Value,
OrderPlacedTime = x.OrderPlaced.UtcDateTime,
SharesBought = x.ActualSharesBought.Value
}) ?? Enumerable.Empty <Domain.Order>();
public async Task AddPendingOrder(Domain.StrategysStock strategysStock, Domain.Order order)
{
var stratagysStock = GetStatagysStockFromDb(strategysStock);
_context.Add(new Order
{
OrderPlaced = order.OrderPlacedTime,
AttemptedCostPerShare = order.MarketPrice,
AttemptedSharesBought = order.SharesBought,
PositionId = stratagysStock.Id
});
await _context.SaveChangesAsync();
}
private StratagysStock GetStatagysStockFromDb(Domain.StrategysStock strategysStock)
=> _context.StratagysStocks.SingleOrDefault(x =>
x.StockSymbol == strategysStock.StockSymbol &&
x.Strategy == strategysStock.Strategy &&
x.TradingFrequency == strategysStock.TradingFrequency);
