public NbRatesViewModel(KeeperDb db, NbRbRatesExtractor nbRbRatesExtractor)
{
var dispatcherTimer = new DispatcherTimer();
dispatcherTimer.Tick += DispatcherTimerTick;
dispatcherTimer.Interval = new TimeSpan(0, 0, 1);
dispatcherTimer.Start();
_backgroundWorker = new BackgroundWorker();
_backgroundWorker.WorkerReportsProgress = true;
_backgroundWorker.WorkerSupportsCancellation = true;
_backgroundWorker.DoWork += BackgroundWorkerDoWork;
if (db.OfficialRates == null)
{
db.OfficialRates = new ObservableCollection <NbRate>();
db.OfficialRates.Add(new NbRate()
{
Date = new DateTime(1995, 3, 31), UsdRate = 11550, EurRate = 0, RurRate = 2.28
});
}
Rows = db.OfficialRates;
_nbRbRatesExtractor = nbRbRatesExtractor;
}
public async void Start(ShellVm vm)
{
while (true)
{
if (vm.NbRbViewModel.NbRbVm.Today == null || vm.NbRbViewModel.NbRbVm.Today.Date.Date != DateTime.Today)
{
while (true) // can't step farther till Today is not initialized
{
var today = await NbRbRatesExtractor.GetNbDayAsync(DateTime.Today);
if (today != null)
{
Application.Current.Dispatcher.Invoke(() =>
{
vm.NbRbViewModel.NbRbVm.PreviousTradeDay =
today; // force to (re)read Previous day if Today changed
vm.NbRbViewModel.NbRbVm.Today = today;
vm.BelStockViewModel.TodayNbRates = today;
vm.ForecastVm.Initialize(today);
});
break;
}
await Task.Delay(60000);
}
}
while (vm.NbRbViewModel.NbRbVm.PreviousTradeDay.Equals(vm.NbRbViewModel.NbRbVm.Today))
{
var previousTradeDay = await NbRbRatesExtractor.GetNbDayAsync(vm.NbRbViewModel.NbRbVm.PreviousTradeDay.Date.AddDays(-1));
if (previousTradeDay != null)
{
Application.Current.Dispatcher.Invoke(() =>
{
vm.NbRbViewModel.NbRbVm.PreviousTradeDay = previousTradeDay;
vm.BelStockViewModel.PreviousTradeDayNbRates = previousTradeDay;
});
}
else
{
await Task.Delay(60000);
}
}
// ReSharper disable once PossibleNullReferenceException
if ((vm.NbRbViewModel.NbRbVm.Tomorrow == null || vm.NbRbViewModel.NbRbVm.Tomorrow.Date.Date != DateTime.Today.AddDays(1)) &&
DateTime.Now.Hour >= 13)
{
var tomorrow = await NbRbRatesExtractor.GetNbDayAsync(DateTime.Today.AddDays(1));
if (tomorrow != null)
{
Application.Current.Dispatcher.Invoke(() =>
{
vm.NbRbViewModel.NbRbVm.Tomorrow = tomorrow;
vm.ForecastVm.Initialize(tomorrow);
});
}
}
await Task.Delay(60000);
}
// ReSharper disable once FunctionNeverReturns
}
