public USchedule[] Build()
{
if (MinFinancialHours > MaxFinancialHours)
{
throw new Exception($"{nameof(MinFinancialHours)} can't be >= {nameof(MaxFinancialHours)}.");
}
if (MinStartTime > MaxStartTime)
{
throw new Exception($"{nameof(MinStartTime)} can't be >= {nameof(MaxStartTime)}.");
}
if (MinEndTime > MaxEndTime)
{
throw new Exception($"{nameof(MinEndTime)} can't be >= {nameof(MaxEndTime)}.");
}
if (Days.Count == 0)
{
throw new Exception($"There must be at least one day in collection {nameof(Days)}");
}
if (Classes.Count == 0)
{
throw new Exception($"There must be at least one class in collection {nameof(Classes)}");
}
_buildClasses = Classes
.Where(c => c.Days.Except(Days.AsEnumerable()).Any() == false)
.Where(c => c.StartTime >= MinStartTime && c.EndTime <= MaxEndTime)
.Where(c => Breaks.Where(b => c.Intersects(b)).Any() == false)
.OrderBy(a => a.StartTime).ToArray();
_builtSchedules = new List <USchedule>();
_buildingSchedule = new USchedule();
BuildFrom(0);
var result = _builtSchedules
//Filter the schedules and take the ones that fit our conditions
.Where(s => s.HasCourses(ObligatoryCourses))
.Where(s => s.FirstStartTime >= MinStartTime && s.FirstStartTime <= MaxStartTime)
.Where(s => s.LastEndTime >= MinEndTime && s.LastEndTime <= MaxEndTime)
.OrderBy(c => c.Days.Count())
.ThenBy(c => c.MaximumBreaksTotal)
.ThenByDescending(c => c.FinancialHours)
.ThenByDescending(c => c.FirstStartTime)
.ThenBy(c => c.LastEndTime)
.ToArray();
_builtSchedules.Clear();
_buildClasses = null;
_buildingSchedule = null;
return(result);
}
