public SearchFilter ApplyFilter()
{
if (CityName == "" && FacultyName == "" && ProfessorName == "" && MinReview == 0 && MaxReview == Int16.MaxValue)
{
return(this);
}
if (CityName != "")
{
Cities = Cities.Where(city => city.Name.ToLower().Contains(CityName.ToLower()));
Faculties = Cities.SelectMany(c => c.Universities).SelectMany(u => u.Faculties);
Subjects = Subjects.Where(s => Faculties.Contains(s.Faculty));
var professors = Subjects.SelectMany(s => s.Professors).Select(s => s.Professor);
Professors = Professors.Where(p => professors.Contains(p));
}
if (FacultyName != "")
{
Faculties = Faculties.Where(faculty => faculty.Name.ToLower().Contains(FacultyName.ToLower()));
Subjects = Subjects.Where(s => Faculties.Contains(s.Faculty));
var professors = Subjects.SelectMany(s => s.Professors).Select(s => s.Professor);
Professors = Professors.Where(p => professors.Contains(p));
}
if (ProfessorName != "")
{
Professors = Professors.Where(professor => professor.FullName.ToLower().Contains(ProfessorName.ToLower()));
var subjects = Professors.SelectMany(p => p.Subjects).Select(p => p.Subject);
Subjects = Subjects.Where(s => subjects.Contains(s));
}
if (MinReview.HasValue)
{
Professors = Professors.Where(professor => professor.Reviews.Count >= MinReview);
Subjects = Subjects.Where(subject => subject.Reviews.Count >= MinReview);
}
if (MaxReview.HasValue)
{
Professors = Professors.Where(professor => professor.Reviews.Count <= MaxReview);
Subjects = Subjects.Where(subject => subject.Reviews.Count <= MaxReview);
}
return(this);
}
