private static int getBusinessDaysCount(DateTime startDate, DateTime endDate, OperationCountry operationCountry)
{
if (endDate < startDate)
{
throw new ArgumentOutOfRangeException(nameof(startDate));
}
var weekDays = operationCountry.WeekDays;
var holidays = operationCountry.Holidays.Select(s => s.HolidayDate).ToArray();
var allDates = Enumerable.Range(0, 1 + (endDate - startDate).Days)
.Select(count => startDate.AddDays(count)).ToArray();
var countOfBusinesDays = allDates
.Where(x => !weekDays.Contains(x.DayOfWeek) && !holidays.Contains(x))
.Count();
return(countOfBusinesDays);
}
public static double GetLateFeeCalculate(DateTime startDate, DateTime endDate, OperationCountry operationCountry)
{
var businessDaysCount = getBusinessDaysCount(startDate, endDate, operationCountry);
return(operationCountry.LateFees * businessDaysCount);
}