public ViewModelUpdater(
IAlphaVantageAPI priceDataSource,
IHistoricalDatabase historicalDatabase,
ViewModel viewModel
)
{
_priceDataSource = priceDataSource;
viewModel.PropertyChanged += (sender, e) =>
{
switch (e.PropertyName)
{
case "ApiKey":
Update(viewModel.ApiKey, viewModel.Stocks);
foreach (var stock in viewModel.Stocks)
{
var prices = priceDataSource.GetHistoricalPrices(stock.Ticker, 10, viewModel.ApiKey);
historicalDatabase.Update(stock.Ticker, prices);
}
break;
case "SelectedStock":
var historicalPrices = historicalDatabase.GetPrices(viewModel.SelectedStock.Ticker);
viewModel.SelectedHistoricalPrices.Clear();
historicalPrices.ForEach(viewModel.SelectedHistoricalPrices.Add);
break;
default:
throw new Exception($"Unhandled: {e.PropertyName}");
}
};
}
