public void Update(DatabaseContext context, IConfiguration config, Lecture previous)
{
UpdateDirectory(context, config, previous);
// reset repositories
if (previous.Name != Name)
{
LectureContentsRepositoryPair.ResetRemoteUrl();
LectureSubmissionsRepositoryPair.ResetRemoteUrl();
}
// parse teachers and students
var flts = context.Users.Select(x => x.Account);
var newTeachers = TeachersForEdit?.Split(' ', ',', '\t', '\n', '\r') ?? new string[0] {
};
var newStudents = StudentsForEdit?.Split(' ', ',', '\t', '\n', '\r')?.Except(newTeachers) ?? new string[0] {
};
var teachers = GetTeachers().Select(x => x.Account);
var students = GetStudents().Select(x => x.Account);
foreach (var user in context.Users)
{
if (newTeachers.Contains(user.Account) && !teachers.Contains(user.Account))
{
var a = new LectureUser()
{
Lecture = this, User = user, Role = LectureUserRole.Teacher
};
LectureUsers.Add(a);
a.CreateNew(context, config);
}
if (!newTeachers.Contains(user.Account) && teachers.Contains(user.Account))
{
var a = LectureUsers.Where(x => x.UserId == user.Id && x.LectureId == Id && x.Role == LectureUserRole.Teacher).FirstOrDefault();
LectureUsers.Remove(a);
a.Remove(context, config);
}
if (newStudents.Contains(user.Account) && !students.Contains(user.Account))
{
var a = new LectureUser()
{
Lecture = this, User = user, Role = LectureUserRole.Student
};
LectureUsers.Add(a);
a.CreateNew(context, config);
}
if (!newStudents.Contains(user.Account) && students.Contains(user.Account))
{
var a = LectureUsers.Where(x => x.UserId == user.Id && x.LectureId == Id && x.Role == LectureUserRole.Student).FirstOrDefault();
LectureUsers.Remove(a);
a.Remove(context, config);
}
}
var me = GetEntityForEditOrRemove(context, config);
foreach (var x in me.LectureUsers)
{
x.UpdateParent(context, config, this, previous);
}
foreach (var x in me.Sandboxes)
{
x.UpdateParent(context, config, this, previous);
}
context.Update(this);
}
public IEnumerable <User> GetTeachers()
{
return(LectureUsers.Where(x => x.Role == LectureUserRole.Teacher).Select(x => x.User));
}
public IEnumerable <User> GetStudents()
{
return(LectureUsers.Where(x => x.Role == LectureUserRole.Student).Select(x => x.User));
}