/// <summary>
/// Should return exchange rates among the specified currencies that are defined by the source. But only those defined
/// by the source, do not return calculated exchange rates. E.g. if the source contains "EUR/USD" but not "USD/EUR",
/// do not return exchange rate "USD/EUR" with value calculated as 1 / "EUR/USD". If the source does not provide
/// some of the currencies, ignore them.
/// </summary>
public IEnumerable <ExchangeRate> GetExchangeRates(IEnumerable <Currency> currencies)
{
return(provider.GetExchangeRates(currencies));
}
public async Task <IActionResult> ExchangeRates(ExchangeRateSearchParameters exchangeRateSearchParameters)
{
var exchangeRates = await _exchangeRatesProvider.GetExchangeRates(exchangeRateSearchParameters);
return(Ok(exchangeRates));
}
public async Task <ExchangeRateDto?> GetExchangeRate(string currency)
{
var exchangeRates = await _exchangeRateProvider.GetExchangeRates(new ExchangeRateSearchParameters { Currencies = new [] { currency } });
return(exchangeRates.FirstOrDefault() ?? await CreateOrUpdateExchangeRate(currency));
}