public async Task <List <CryptoPrice> > GetPricesForDates(CryptoCurrency baseCurrency, List <DateTime> dates,
CryptoCurrency quoteCurrency = CryptoCurrency.USD)
{
var prices = _repository.GetCryptoPricesSpecificDates(baseCurrency.ToString(),
quoteCurrency.ToString(),
dates);
if (prices.Count != dates.Count)
{
var priceDates = prices.Select(x => x.Timestamp);
foreach (var dateTime in dates.Where(dateTime => !priceDates.Contains(dateTime) && DateTime.Today.AddMonths(-12) < dateTime))
{
var providerPrices = await _cryptoProxy.GetCryptoPrices(baseCurrency,
quoteCurrency,
dateTime,
dateTime);
_repository.SavePrices(providerPrices);
prices.AddRange(providerPrices);
}
}
return(prices.OrderByDescending(x => x.Timestamp).ToList());
}
