/// <summary>
/// Parse and convert rate of BYR for selected, rateProvider (table above currency calculator) for the selected forign currency
/// </summary>
/// <param name="rateProvider">Provide from the currency rate table</param>
/// <param name="foreginCurrency"></param>
/// <returns></returns>
private double GetBYRRate(RateProviderEnum rateProvider, string foreginCurrency)
{
string strRate = "";
switch (rateProvider)
{
case RateProviderEnum.NBRB:
strRate = CurrencyRate.RateByNBRB.ToDictionary()[foreginCurrency];
break;
}
double decRate = 0.0;
if (double.TryParse(strRate, out decRate) == false)
{
throw new FormatException(string.Format("Rate provided by {0} couldn't be parsed as Decimal value, provided values is {1}", rateProvider.ToString(), strRate));
}
return decRate;
}
/// <summary>
/// Calculate rate, given by corresponding rateProvider (table above currency calculator) for the selected currency pair
/// </summary>
/// <param name="rateProvider">Provide from the currency rate table</param>
/// <param name="currencyFrom">Currency name From</param>
/// <param name="currencyTo">Currency name To</param>
/// <returns>Parsed & converted value of the rate</returns>
public double GetRate(RateProviderEnum rateProvider, string currencyFrom, string currencyTo)
{
if (currencyFrom == currencyTo)
{
return 1;
}
else if (currencyFrom != "BYR" && currencyTo != "BYR")
{
throw new NotImplementedException(String.Format("Cross-currency checks not implemented. CurrencyFrom, or currencyTo should be equal 'BYR'. CurrencyFrom={0}, currencyTo{1}", currencyFrom, currencyTo));
}
else if (currencyFrom == "BYR")
{
return 1 / GetBYRRate(rateProvider, currencyTo);
}
else if (currencyTo == "BYR")
{
return GetBYRRate(rateProvider, currencyFrom);
}
return 0;
}
