public string AddRomanNumbers(string firstNumber, string secondNumber)
{
if (!_inputValidator.CheckIfRomanCharacter(firstNumber))
{
return(firstNumber + NotRomanError);
}
if (!_inputValidator.CheckIfRomanCharacter(secondNumber))
{
return(secondNumber + NotRomanError);
}
var firstIntFromRoman = _romanToNumbers.ConvertFromRoman(firstNumber.ToUpper());
var secondIntFromRoman = _romanToNumbers.ConvertFromRoman(secondNumber.ToUpper());
var sum = _calculator.AddNumbers(firstIntFromRoman, secondIntFromRoman);
if (!_inputValidator.RangeValidator(sum))
{
return(SumError);
}
var romanWord = new StringBuilder();
romanWord = _romanToNumbers.ConvertToRoman(sum, romanWord);
return(romanWord.ToString());
}