/// <summary>
/// Calculates the Parking Fee and returns a Charges complex object to
/// encapsulate the multiple Rates that may have been used
/// while generating total charge for parking
/// e.g. The total parking fee may be combination of (Standard Rate + Night Rate)
/// </summary>
/// <param name="startDate"> start Date </param>
/// <param name="endDate"> end date </param>
/// <returns> Return a Charges Object that will contain the Rate objects containing the Rate Name and the charges against that Rate</returns>
public Charges CalculateParkingFee(DateTime startDate, DateTime endDate)
{
try {
if (startDate < endDate)
{
if (_charges == null)
{
_charges = new Charges(startDate, endDate);
}
// Early Bird Rate applicable only when the
// check in and check out happens on same day
// of a weekday on the given times
if (Helper.IsEarlyBirdTime(startDate, endDate))
{
_charges.CalculateEarlyBirdRate();
}
// Night Rate applicable only when the
// check in happens at night on Weekday and check out happens on
//subsequent day on the given time
else if (Helper.IsNightRateTime(startDate, endDate))
{
_charges.CalculateNighRate();
}
else
{
//All other times when parking is for more than one
//day or where multiple rates are applicable based on check-in and check-out time
_charges.CalculateStandardAndWeekendRates();
}
}
else
{
throw new Exception($"Start Date : {startDate} can not be greater than End Date : {endDate} ");
}
return(_charges);
}
catch (Exception ex)
{
throw ex;
}
}