private static void InvoiceEvent(Loan loan, LoanEvent loanEvent)
{
var firstDayOfMonth = new DateTime(loanEvent.EventTime.Year, loanEvent.EventTime.Month, 1);
var firstDayOfNextMonth = firstDayOfMonth.AddMonths(1);
loan.AddInvoice(loanEvent.EventTime, firstDayOfMonth, firstDayOfNextMonth, loanEvent.Amount);
}
private static void PayEvent(Loan loan, LoanEvent loanEvent)
{
var payment = loan.Pay(loanEvent.EventTime, loanEvent.Amount);
Console.WriteLine(payment.ToString());
}