public IExchangePair ArgumentsToExchangePair(string[] args)
{
var wrongArgumentsException = new Exception("Incorrect argument format.\nUsage - 'Exchange EUR/DKK 12345.6789'\n");
var cultureInfo = new CultureInfo("en-US");
const char currenciesSeperator = '/';
if (args.Length != 2)
{
throw wrongArgumentsException;
}
string[] currencies = args[0].Split(currenciesSeperator);
// All ISO currency codes are made form 3 letters so this checks if the format is correct
if (currencies.Length != 2 || currencies[0].Length != 3 || currencies[1].Length != 3)
{
throw wrongArgumentsException;
}
try
{
var amount = Convert.ToDecimal(args[1], cultureInfo);
return(_factory.CreateExchangePair(_factory.CreateCurrency(currencies[0].ToUpper()), _factory.CreateCurrency(currencies[1].ToUpper()), amount));
}
catch (FormatException)
{
throw wrongArgumentsException;
}
}
public ExchangeRates(IExchangeEntityFactory factory)
{
_entityFactory = factory;
_rates = new Dictionary <ICurrency, decimal>()
{
{ _entityFactory.CreateCurrency("Danske kroner", "DKK"), 100.0m }, //This is the main currency
{ _entityFactory.CreateCurrency("Euro", "EUR"), 743.94m },
{ _entityFactory.CreateCurrency("Amerikanske dollar", "USD"), 663.11m },
{ _entityFactory.CreateCurrency("Britiske pund", "GBP"), 852.85m },
{ _entityFactory.CreateCurrency("Svenske kroner", "SEK"), 76.10m },
{ _entityFactory.CreateCurrency("Norske kroner", "NOK"), 78.40m },
{ _entityFactory.CreateCurrency("Schweiziske franc", "CHF"), 683.58m },
{ _entityFactory.CreateCurrency("Japanske yen", "JPY"), 5.9740m },
};
}