public CurrencyConversion(string fromCurrencyISOName, string toCurrencyISOName)
{
Argument.NotEmpty(fromCurrencyISOName, "fromCurrencyISOName");
Argument.NotEmpty(toCurrencyISOName, "toCurrencyISOName");
Argument.Satisfies(fromCurrencyISOName, x => x != toCurrencyISOName, "toCurrencyISOName", "Can't create conversion to the same currency.");
_fromCurrencyISOName = fromCurrencyISOName;
_toCurrencyISOName = toCurrencyISOName;
_exchangeRateKey = new ExchangeRateKey(fromCurrencyISOName, toCurrencyISOName);
}
public IList <ExchangeRate> GetActualForExchange(ExchangeRateKey key)
{
return(EnsureRepositoryException(() =>
{
var rate1 = Context.Set <ExchangeRate>()
.OrderByDescending(x => x.TimestampUtc)
.FirstOrDefault(x => x.Base.ISOName == key.FirstCurrencyISOName && x.Foreign.ISOName == key.SecondCurrencyISOName && x.IsActual);
var rate2 = Context.Set <ExchangeRate>()
.OrderByDescending(x => x.TimestampUtc)
.FirstOrDefault(x => x.Base.ISOName == key.SecondCurrencyISOName && x.Foreign.ISOName == key.FirstCurrencyISOName && x.IsActual);
var list = new List <ExchangeRate>();
if (rate1 != null)
{
list.Add(rate1);
}
if (rate2 != null)
{
list.Add(rate2);
}
return list;
}));
}
