//returns all appointments which clashes with the requested appointments. check inside function for all conditions.
public static List <SingleAppointment> GetClashingAppointments(List <AppointmentModel> ipList, TimeSpan reqTime, int duration)
{
List <SingleAppointment> clashingAppts = new List <SingleAppointment>();
if (ipList != null && ipList.Count > 0)
{
AppointmentDay appSchedule = AppointmentDay.FormatData(ipList);
TimeSpan requestStartTime = reqTime;
TimeSpan requestEndTime = reqTime + TimeSpan.FromMinutes(duration);
//get all clashing schedules.
clashingAppts = appSchedule.Schedules.Where(sch =>
{
//check if this request comes between any of the other appointment's schedule or not.
//case: 1-- requeststarttime shouldn't come in between any of the existing appointments
//2. requestendtime also shouldn't come in between any of the existing appts.
//3. to handle overlap boundary conditions, existing starttime shouldn't come between requeststarttime and endtime.
//4. to handle exact boundary conditions, existing requeststarttime shouldn't start from any of existing startimes.
return((sch.StartTime < requestStartTime && requestStartTime < sch.EndTime) ||
(sch.StartTime < requestEndTime && requestEndTime < sch.EndTime) ||
(requestStartTime < sch.StartTime && sch.StartTime < requestEndTime) ||
(requestStartTime == sch.StartTime));
}).ToList();
//if (clashingAppts != null && clashingAppts.Count > 0)
//{
// returnValue = false;
//}
//foreach (StartEndTime sch in appSchedule.Schedules)
//{
// //check if this request comes between any of the other appointment or not.
// if ((sch.StartTime < requestStartTime && requestStartTime < sch.EndTime) ||
// (sch.StartTime < requestEndTime && requestStartTime < sch.EndTime))
// {
// returnValue = false;
// break;
// }
//}
}
return(clashingAppts);
}
// public List<SingleAppointment> Clashes = new List<SingleAppointment>();
//returns a formatted object for passed appointment lists.
public static AppointmentDay FormatData(List <AppointmentModel> daysAppointments)
{
AppointmentDay appDay = new AppointmentDay();
if (daysAppointments != null && daysAppointments.Count > 0)
{
appDay.AppointmentCount = daysAppointments.Count;
foreach (var item in daysAppointments)
{
TimeSpan startTime = item.AppointmentTime;
TimeSpan endTime = item.AppointmentTime.Add(TimeSpan.FromMinutes(20));
appDay.Schedules.Add(new SingleAppointment()
{
AppointmentId = item.AppointmentId, StartTime = startTime, EndTime = endTime
});
}
}
appDay.Current = null;
//ordering appointments by start time.
appDay.Schedules = appDay.Schedules.OrderBy(a => a.StartTime).ToList();
return(appDay);
}