private static ITransactionPerformance GetDividendPerformance(ITransactionBook book, Guid stockId, Guid sellTransId)
{
var entries = book.GetLastCommittedChanges(stockId).ToList();
var dividend = entries.FirstOrDefault(e => e.TransactionId == sellTransId) as IDividendTransactionBookEntry;
var other = entries.Where(e => e.TransactionId != sellTransId).Cast <IBuyingTransactionBookEntry>();
return(new TransactionPerformanceService().GetPerformance(dividend, other));
}
private static ITransactionPerformance GetPerformance(ITransactionBook book, Guid stockId, Guid sellTransId, decimal?mfe, decimal?mae)
{
var entries = book.GetLastCommittedChanges(stockId).ToList();
var sell = entries.FirstOrDefault(e => e.TransactionId == sellTransId) as ISellingTransactionBookEntry;
var other = entries.Where(e => e.TransactionId != sellTransId).Cast <IBuyingTransactionBookEntry>();
return(new TransactionPerformanceService().GetPerformance(sell, other, mfe, mae));
}
/// <summary>
/// Calculates the performance for this transaction if its a selling transaction
/// </summary>
//TODO: Move to a domain service
private void CalculatePerformance(Guid transactionId, Guid stockId, decimal?mae, decimal?mfe)
{
var entries = _transactionBook.GetLastCommittedChanges(stockId).ToList();
var sell = entries.FirstOrDefault(e => e.TransactionId == transactionId) as ISellingTransactionBookEntry;
var buys = entries.Where(e => e.TransactionId != transactionId).Cast <IBuyingTransactionBookEntry>();
var performance = _transactionPerformanceService.GetPerformance(sell, buys, mfe, mae);
_eventBus.Publish(new TransactionPerformanceCalculatedEvent(transactionId, typeof(TransactionAggregate),
performance.ProfitAbsolute,
performance.ProfitPercentage,
performance.ProfitMade,
performance.HoldingPeriod,
performance.R,
performance.ExitEfficiency,
performance.EntryEfficiency,
performance.MAEAbsolute,
performance.MFEAbsolute));
_eventBus.Publish(new StockOverallPerformanceChangedEvent(transactionId, typeof(TransactionAggregate), performance.ProfitAbsolute, stockId));
}