private async Task LoadData()
{
try
{
if (_cancellationTokenSource != null && _cancellationTokenSource.Token.CanBeCanceled &&
!_cancellationTokenSource.IsCancellationRequested)
{
_cancellationTokenSource.Cancel();
return;
}
_cancellationTokenSource = new CancellationTokenSource();
IsBusy = true;
await LoadSettings().ConfigureAwait(false);
SetPortfolio();
// get list of all saved predictions
var listBestPredictionsDtos = await PersistenceService.GetBestNetworkDTOs().ConfigureAwait(false);
Predictions = new ObservableCollection <DashboardPrediction>();
// for each
foreach (var dto in listBestPredictionsDtos)
{
if (_cancellationTokenSource.Token.IsCancellationRequested)
{
return;
}
var stock = await PersistenceService.GetStockFromId(dto.StockId);
stock.HistoricalData = await DownloaderService.GetHistoricalData(stock, _settings.StartDate, DateTime.Now, true).ConfigureAwait(false);
var dashboardPrediction = new DashboardPrediction
{
Symbol = stock.Symbol, Name = stock.Name, StockId = stock.GetUniqueId(),
Country = stock.Country.Name
};
lock (Locker)
{
Application.Current.Dispatcher?.Invoke(() => Predictions.Add(dashboardPrediction));
}
TrainingSession trainingSession;
try
{
trainingSession = await Task.Run(() => new TrainingSession(Portfolio, stock, dto, _settings))
.ConfigureAwait(false);
}
catch (Exception ex)
{
Messenger.Default.Send(new TrainStatusMessage(
$"Could setup training session for stock {stock.Name}: {ex.Message}", SeverityEnum.Error));
trainingSession = new TrainingSession(Portfolio, stock);
}
dashboardPrediction.TrainingSession = trainingSession;
dashboardPrediction.Close = (double?)trainingSession.Stock.HistoricalData?.Quotes?.LastOrDefault().Value?.Close ?? 0d;
dashboardPrediction.LastTrainingDate = dto.Timestamp;
if (trainingSession.Stock.HistoricalData != null)
{
dashboardPrediction.LastUpdate = trainingSession.Stock.HistoricalData.EndDate;
}
}
}
finally
{
IsBusy = false;
_cancellationTokenSource = null;
}
}
