public async ValueTask <Result <decimal, ProblemDetails> > Get(Currencies sourceCurrency,
Currencies targetCurrency)
{
if (sourceCurrency == Currencies.NotSpecified)
{
return(ProblemDetailsBuilder.FailAndLogArgumentNullOrEmpty <decimal>(_logger, nameof(sourceCurrency)));
}
if (targetCurrency == Currencies.NotSpecified)
{
return(ProblemDetailsBuilder.FailAndLogArgumentNullOrEmpty <decimal>(_logger, nameof(targetCurrency)));
}
if (sourceCurrency == targetCurrency)
{
return(Result.Success <decimal, ProblemDetails>(1));
}
return(await GetDefaultRate(sourceCurrency.ToString(), targetCurrency.ToString())
?? await GetRateFromApi(sourceCurrency, targetCurrency));
}