public void MarkAllComplete(List <Guid> staffIds, Guid requirementId, DateTime completeDate)
{
var existingTrainings = StaffTraining.Where(training =>
training.TrainingRequirementId == requirementId && staffIds.Contains(training.StaffId) &&
training.CompletedDate.Value.InSchoolYear(completeDate.SchoolYear())).ToList();
if (existingTrainings.Any())
{
staffIds.RemoveAll(id => existingTrainings.Any(training => training.StaffId == id));
}
_trainingRepository.InsertAll(staffIds.Select(staffId => new StaffTraining
{
Id = Guid.NewGuid(),
CompletedDate = completeDate,
StaffId = staffId,
TrainingRequirementId = requirementId
}));
}