public void AssignAmortization(AmortizationEntry item)
{
if (item != null)
{
_amortizationEntry = item;
}
}
private AmortizationEntry ApplyMonthlyPayment(DateTime currentDate, DebtEntry debtEntry,
PaymentManager paymentManager, ref double additionalPrincipal, bool applySnowball)
{
double startingBalance = debtEntry.CurrentBalance;
double interestPortion = debtEntry.MonthlyInterest * debtEntry.CurrentBalance;
double minimumMonthlyPayment = debtEntry.MinimumMonthlyPayment;
if (debtEntry.DebtType == DebtType.CreditCard &&
minimumMonthlyPayment < debtEntry.MinimumMonthlyPaymentLimit)
{
minimumMonthlyPayment = debtEntry.MinimumMonthlyPaymentLimit;
}
double minimumPrincipal = debtEntry.MinimumMonthlyPayment - interestPortion;
double principalPortion = minimumPrincipal + additionalPrincipal;
double possibleBalance = debtEntry.CurrentBalance - principalPortion;
if (possibleBalance < 0)
{
if (minimumPrincipal >= debtEntry.CurrentBalance)
{
minimumPrincipal = debtEntry.CurrentBalance - interestPortion;
additionalPrincipal = 0;
}
else
{
additionalPrincipal = debtEntry.CurrentBalance - minimumPrincipal - interestPortion;
}
debtEntry.CurrentBalance = 0;
if (applySnowball)
{
paymentManager.WindfallEntries.Add(new WindfallEntry(string.Empty, Math.Abs(possibleBalance), currentDate.AddMonths(1)));
if (paymentManager.SnowballEntries.Count > 0)
{
paymentManager.SnowballEntries [0].Amount += debtEntry.MinimumMonthlyPayment;
}
else
{
paymentManager.SnowballEntries.Add (new SnowballEntry ("Temp", debtEntry.MinimumMonthlyPayment));
}
}
}
else if (possibleBalance > debtEntry.CurrentBalance)
{
debtEntry.Name += " INVALID!";
debtEntry.CurrentBalance = -9999;
}
else
{
debtEntry.CurrentBalance = possibleBalance;
}
AmortizationEntry output = new AmortizationEntry(
debtEntry.Name, debtEntry.DebtType, currentDate, startingBalance, interestPortion,
minimumPrincipal, additionalPrincipal, debtEntry.CurrentBalance);
// We always use up all of the additional principle, otherwise it gets added as a windfall the
// following month
additionalPrincipal = 0;
return output;
}
public void WriteToConsole(AmortizationEntry output)
{
string message = output.DebtName +
": " + DateTimeHelpers.ToShortMonthName(output.Date) + " " + output.Date.Year +
" Starting Balance: " + output.StartBalance.ToString("C") +
" Min Interest: " + output.MinimumInterest.ToString("C") +
" Min Principal: " + output.MinimumPrincipal.ToString("C") +
" Add Principal: " + output.AdditionalPrincipal.ToString("C") +
" Total Payment: " + output.TotalPayment.ToString("C") +
" Ending Balance: " + output.EndBalance.ToString("C");
output.Print(message);
}
