public async Task <List <Subject> > GetAllSubjects(Subject currentSubject, List <Subject> subjectListHierarchy)
{
var childSubjects = await _subjectRepository.GetChildSubjects(currentSubject.Id);
if (childSubjects.Any())
{
childSubjects.ForEach(x => x.ClearChildSubjects());
for (int i = 0; i < childSubjects.Count; i++)
{
Subject subject = childSubjects[i];
var childSubjectList = new List <Subject>();
var testChildSubjects = await GetAllSubjects(subject, childSubjectList);
currentSubject.AddChildSubjectsRange(testChildSubjects);
}
subjectListHierarchy.Add(currentSubject);
}
else
{
subjectListHierarchy.Add(currentSubject);
}
return(subjectListHierarchy);
}