public async Task <Dictionary <string, decimal> > Handle(GetCryptoCurrencyExchangeRatesQuery request,
CancellationToken cancellationToken)
{
IConfigurationSection currencySection = _configuration.GetSection("AvailableCurrencies");
var symbols = currencySection.AsEnumerable()
.Where(c => !string.IsNullOrEmpty(c.Value))
.Select(c => c.Value);
var usdPrice = await _cryptoCurrencyService.GetLatestPrice(request.Symbol).ConfigureAwait(false);
var exchangeRate = await _exchangeRateService.GetLatestRate(string.Join(",", symbols))
.ConfigureAwait(false);
var prices = new Dictionary <string, decimal>();
// calculate price based on currency rate
foreach (var symbol in symbols)
{
if (symbol.Equals("usd", StringComparison.InvariantCultureIgnoreCase))
{
prices.Add("USD", usdPrice);
}
else
{
var priceWithRate = usdPrice * exchangeRate.Rates[symbol];
prices.Add(symbol, priceWithRate);
}
}
return(prices);
}
public async Task <decimal> Handle(GetCryptoCurrencyPriceQuery request, CancellationToken cancellationToken)
{
return(await _cryptoCurrencyService.GetLatestPrice(request.Symbol).ConfigureAwait(false));
}
