/// <summary>
///Taking from and to as source and destination strings
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
//Method to get the conversion rate
public double GetConversionRate(string from, string to)
{
//Checking for valid arguements
if (string.IsNullOrWhiteSpace(from) || string.IsNullOrWhiteSpace(to) || from.Length != 3 && to.Length != 3)
{
throw new System.ArgumentException(Messages.InvalidInput);
}
//Splitting the jsonFile
//If to and from currency are same
if (string.Equals(to, from, StringComparison.OrdinalIgnoreCase))
{
return(1);
}
CurrencyParser currencyParser = new CurrencyParser();
//Calling the convert function to convert from USD
if (string.Equals(from, currencyParser.GetApiSource(), StringComparison.OrdinalIgnoreCase))
{
return(currencyParser.ConversionRate(to.ToUpper()));
}
//Calling the convert function to conver to USD
else if (string.Equals(to, currencyParser.GetApiSource(), StringComparison.OrdinalIgnoreCase))
{
return(1 / currencyParser.ConversionRate(from.ToUpper()));
}
//Throwing Exception if none of the currency is USD
else
{
throw new System.ArgumentException(Messages.InvalidCurrency);
}
}
/// <summary>
///Taking from and to as source and destination strings
/// </summary>
/// <param name="from"></param>
/// <param name="to"></param>
//Method to get the conversion rate
public double GetConversionRate(string from, string to)
{
//Checking for valid arguements
if (string.IsNullOrWhiteSpace(from) || string.IsNullOrWhiteSpace(to) || from.Length != 3 && to.Length != 3)
{
throw new System.ArgumentException(Messages.InvalidInput);
}
//Splitting the jsonFile
//If to and from currency are same
if (string.Equals(to, from, StringComparison.OrdinalIgnoreCase))
{
return 1;
}
CurrencyParser currencyParser = new CurrencyParser();
//Calling the convert function to convert from USD
if (string.Equals(from, currencyParser.GetApiSource(), StringComparison.OrdinalIgnoreCase))
{
return currencyParser.ConversionRate(to.ToUpper());
}
//Calling the convert function to conver to USD
else if (string.Equals(to, currencyParser.GetApiSource(), StringComparison.OrdinalIgnoreCase))
{
return 1 / currencyParser.ConversionRate(from.ToUpper());
}
//Throwing Exception if none of the currency is USD
else
{
throw new System.ArgumentException(Messages.InvalidCurrency);
}
}
