private LoanInfo GetLoanInfo()
{
string input;
var loanDTO = new LoanInfoDTO();
while (_counter < Buffer.Length)
{
input = Buffer[_counter++];
loanDTO.TryPopulate(input);
}
var loan = loanDTO.TryParse(out string[] errors);
return(loan);
}
/// <summary>
/// Parses Loan info properties
/// </summary>
/// <param name="loan">Initial Loan info object</param>
/// <param name="errors">Output error messages after parsing</param>
/// <returns>Parsed Loan Info object</returns>
public static LoanInfo TryParse(this LoanInfoDTO loan, out string[] errors)
{
var errorMessages = new List <string>();
LoanInfo parsedLoan = new LoanInfo();
if (string.IsNullOrEmpty(loan.Amount) || !decimal.TryParse(loan.Amount, out var amount))
{
errorMessages.Add("The Loan Amount has incorrect format.");
}
else
{
parsedLoan.Amount = amount;
}
if (string.IsNullOrEmpty(loan.Downpayment) || !decimal.TryParse(loan.Downpayment, out var downpayment))
{
errorMessages.Add("The Loan Downpayment has incorrect format.");
}
else
{
parsedLoan.Downpayment = downpayment;
}
if (string.IsNullOrEmpty(loan.Interest) ||
!decimal.TryParse(loan.Interest.Replace("%", "").Trim(), out var interest))
{
errorMessages.Add("The Loan Interest has incorrect format.");
}
else
{
parsedLoan.Interest = loan.Interest.Contains("%") ? interest / 100 : interest;
}
if (string.IsNullOrEmpty(loan.Term) || !int.TryParse(loan.Term, out var term))
{
errorMessages.Add("The Loan Term has incorrect format.");
}
else
{
parsedLoan.Term = term;
}
errors = errorMessages.ToArray();
return(errorMessages.Any() ? null : parsedLoan);
}
private LoanInfo GetLoanInfo()
{
string input;
var loanDTO = new LoanInfoDTO();
_view.Write("Please enter loan parameters:");
startInput:
while (!string.IsNullOrEmpty(input = _view.GetUserInput()))
{
loanDTO.TryPopulate(input);
}
var loan = loanDTO.TryParse(out string[] errors);
if (errors != null && errors.Any())
{
_view.Write(errors);
_view.Write("Please correct input parameters.");
goto startInput;
}
return(loan);
}
/// <summary>
/// Populate properties of Loan Info object from user console input
/// </summary>
/// <param name="loan">Loan info object</param>
/// <param name="userInput">Console input</param>
/// <returns>Is Populated</returns>
public static bool TryPopulate(this LoanInfoDTO loan, string userInput)
{
var tokens = userInput.Split(new[] { ':' }, StringSplitOptions.RemoveEmptyEntries)
.Select(s => s.Trim()).ToArray();
if (tokens.Length != 2)
{
return(false);
}
var property = tokens[0].ToLower();
var value = tokens[1]
.Replace(" ", "").Replace("'", "").Replace(",", ""); // replace some possible thousand separatore
switch (property)
{
case "amount":
loan.Amount = value;
break;
case "interest":
loan.Interest = value;
break;
case "downpayment":
loan.Downpayment = value;
break;
case "term":
loan.Term = value;
break;
default:
return(false);
}
return(true);
}