public int SubscribeUser(int CourseId, int UserId)
{
Course course = Find(i => i.Id.Equals(CourseId));
User student = _Context.Users.Where(i => i.Id.Equals(UserId)).FirstOrDefault();
if (course is null || course.Id <= 0)
{
return((int)TransactionStatus.ENTITY_NOT_FOUND);
}
if (student is null || student.Id <= 0)
{
return((int)TransactionStatus.ENTITY_NOT_FOUND);
}
if (_Context.CourseUserCredits.Any(i => i.StudentId.Equals(student.Id)))
{
return((int)TransactionStatus.UNCHANGED);
}
CourseUserCredit userCredits = new CourseUserCredit
{
Course = course,
Student = student
};
course.StudentCredits.Add(userCredits);
return(_Context.SaveChanges());
}
public int AssignUserCredits(int CourseId, int UserId, double Credits)
{
Course course = Find(i => i.Id.Equals(CourseId));
User student = _Context.Users.Where(i => i.Id.Equals(UserId)).FirstOrDefault();
if (course is null || course.Id <= 0)
{
return((int)TransactionStatus.ENTITY_NOT_FOUND);
}
if (student is null || student.Id <= 0)
{
return((int)TransactionStatus.ENTITY_NOT_FOUND);
}
if (course.Status.Equals(Status.Active.ToString()) && student.Status.Equals(Status.Active.ToString()))
{
if (Credits >= 0)
{
CourseUserCredit userCredits = _Context.CourseUserCredits
.Where(i => i.CourseId.Equals(course.Id))
.Where(i => i.StudentId.Equals(student.Id))
.FirstOrDefault();
if (userCredits is null || userCredits.Id <= 0)
{
return((int)TransactionStatus.ENTITY_NOT_FOUND);
}
userCredits.Credits = Credits;
return(_Context.SaveChanges());
}
return((int)TransactionStatus.UNCHANGED);
}
return((int)TransactionStatus.ENTITY_NOT_FOUND);
}
