/// <summary>
/// Imports the list of currently available stocks.
/// </summary>
/// <returns>A task that will complete when the import has completed.</returns>
public async Task ImportStocks()
{
// Collect both list of stocks: stored and currently available.
var storedStocks = (await _entityQuerySource.Query(q => q.Get <Stock>())).ToDictionary(x => x.Isin);
var currentStocks = await _stockQueryService.QueryAll();
await _entityRepositoryFactory.Use(async repository =>
{
foreach (var stock in currentStocks)
{
// Create stock in storage if not yet present.
if (!storedStocks.TryGetValue(stock.Isin, out Stock matchingStoredStock))
{
repository.Add(stock);
}
// Update name if this has changed.
else if (stock.Name != matchingStoredStock.Name)
{
await repository.Change <Stock>(matchingStoredStock.Id, s =>
{
s.Name = stock.Name;
});
}
}
// For now, do not delete obsolete stocks...
});
}
