public List <EngineerShiftModel> ScheduleEngineerShift(ShiftRequestModel shiftRequest)
{
List <Engineer> engineers = _repository.FindEngineersAvailableOn(shiftRequest.StartDate);
if (engineers.Count < shiftRequest.Count)
{
throw new InvalidOperationException
($"You requested {shiftRequest.Count} engineer{(shiftRequest.Count > 1 ? "s" : "")} but only {engineers.Count} {(engineers.Count > 1 ? "are" : "is")} available");
}
ValidateEngineers(engineers, shiftRequest.StartDate);
var randomEngineers = engineers.OrderBy(x => new Random().Next()).Take(shiftRequest.Count).ToList();
List <EngineerShift> shifts = randomEngineers.Select(e =>
new EngineerShift
{
Date = shiftRequest.StartDate,
EngineerId = e.Id,
Duration = 4
}
).ToList();
return(Mapper.Map <List <EngineerShiftModel> >(_repository.ScheduleEngineerShift(shifts)));
}