/// <summary>
/// Returns -1 no conflict, Return 0 ignore first Return 1 ignore 2nd
/// </summary>
private static int IsConflictOrOverLap(ICongestionRate cp1, ICongestionRate cp2, Day day, VehicleType type)
{
var cr1DateRange = new DateRange(cp1.Start, cp1.End);
var cr2DateRange = new DateRange(cp2.Start, cp2.End);
var intersect = DateTimeIntersect.FindIntersect(cr1DateRange, cr2DateRange);
if (intersect == null) return -1;
return SelectTheMoreSpecific(cp1, cp2, day, type);
}
private static int SelectTheMoreSpecific(ICongestionRate cp1, ICongestionRate cp2, Day day, VehicleType type)
{
//Check Vehicle
if (cp1.Vehicle == type) return 1;
if (cp2.Vehicle == type) return 0;
//Check Day of the week
if (cp1.Day == day) return 1;
if (cp2.Day == day) return 0;
//OtherWise ignore the 2nd
return 1;
}
private static ChargeSummary BuildSummary(DateTime start, DateTime end, ICongestionRate rate)
{
decimal charge = 0m;
var time = new TimeSpan(0,0,0,0);
var intersectingTime = GetIntersectingTime(start, end, rate);
if (intersectingTime != null)
{
time = intersectingTime.End - intersectingTime.Start;
charge = CalculateRate(time, rate);
}
return new ChargeSummary
{
Cost = charge,
TimeSpent = time,
RateDescription = rate.Description
};
}
private static decimal CalculateRate(TimeSpan chargeableTime, ICongestionRate rate)
{
decimal charge = 0m;
if (chargeableTime.Days > 0)
{
charge += chargeableTime.Days * (rate.Rate * 24);
}
if (chargeableTime.Hours > 0)
{
charge += chargeableTime.Hours*rate.Rate;
}
if (chargeableTime.Minutes > 0)
{
var convert = (decimal) chargeableTime.Minutes/60;
charge += convert * rate.Rate;
}
return charge;
}
private static DateRange GetIntersectingTime(DateTime start, DateTime end, ICongestionRate rate)
{
var timeSpent = new DateRange(start, end);
var congestionRateRange = new DateRange(AddDatePartToCongestionTime(start, rate.Start), AddDatePartToCongestionTime(start, rate.End, true));
return DateTimeIntersect.FindIntersect(timeSpent, congestionRateRange);
}
