Booking Sketch

nBook.cs

        public static List<TimeSlot> GetAvailableTimeSlots(this ServiceEntry service, DateTime start, DateTime end, TimeSpan duration, Func<ResourceEntry, bool> resourcePredicate)
        {
            var Unavailable = service.Bookings.Where(x => resourcePredicate(x.Resource)).Select(y => y.Period);
            List<TimeSlot> OriginalAvail = new List<TimeSlot>();
            DateTime setTime = start;
            while (setTime < end)
            {
                if ((setTime.Hour < start.Hour) || (setTime.Hour > end.Hour))
                {
                    setTime = setTime.Add(duration);
                    continue;
                }
                TimeSlot foundEntry = Unavailable.FirstOrDefault(x => x.Start <= setTime && x.End >= (setTime.Add(duration)));
                OriginalAvail.Add(new TimeSlot
                {
                    Start = setTime,
                    End = setTime.Add(duration),
                    IsFree = foundEntry == null,
                    Description = foundEntry != null ? foundEntry.Description : "",
                });
                setTime = setTime.Add(duration);
            }
            return OriginalAvail;
        }