static void Main(string[] args)
{
var loan = Loan.GetLoanData();
var calculatedResult = LoanCalculatedResult.Calculate(loan);
calculatedResult.PrintResults();
Console.ReadLine();
}
/// <summary>
/// Make calculations of the loan and returns calculated results such as total payment, monthly payment, total interest amount and administration fee(one-time) amount.
/// </summary>
/// <param name="loan">Model with terms for the loan. Typeof <see cref="Loan"/>.</param>
/// <returns>Returns model typeof <see cref="LoanCalculatedResult"/>.</returns>
public static LoanCalculatedResult Calculate(Loan loan)
{
var loanResult = new LoanCalculatedResult
{
MonthlyInterestRate = loan.AnnualInterestRate / 100 / 12
};
loanResult.MonthlyLoanAmount = loan.Amount * (loanResult.MonthlyInterestRate +
(loanResult.MonthlyInterestRate / (Math.Pow(1 + loanResult.MonthlyInterestRate, loan.DurationMonths) - 1)));
loanResult.TotalPayment = loanResult.MonthlyLoanAmount * loan.DurationMonths;
loanResult.TotalInterestRateAmount = loanResult.TotalPayment - loan.Amount;
loanResult.AdministrationFeeAmount = ((loan.Amount * loan.AdministrationFeePercentage / 100) > loan.MaximalAdministrationFeeAmount) ?
loan.MaximalAdministrationFeeAmount : loan.Amount * loan.AdministrationFeePercentage / 100;
return(loanResult);
}