public MarkBll EditMark(StudentBll student, int grade, TeachersWorkloadBll teachersWorkload)
{
Student stud = mapper.Map <Student>(student);
TeachersWorkload tw = mapper.Map <TeachersWorkload>(teachersWorkload);
Mark mark = db.Marks.Get(m => (m.Student.Id == student.Id) && (m.TeachersWorkload.Id == teachersWorkload.Id)).SingleOrDefault();
MarkBll markBll;
if (mark == null)
{
try
{
markBll = AddMark(grade, stud, tw, true);
}
catch
{
return(null);
}
}
else
{
try
{
markBll = EditMark(mark, grade);
}
catch
{
return(null);
}
}
return(markBll);
}
public TeachersWorkloadBll AddWorkload(int teacherId, int subjectId, int groupId, int term)
{
if (teacherId < 1)
{
throw new ArgumentException("TeacherId is invalid", "teacherId");
}
if (subjectId < 1)
{
throw new ArgumentException("SubjectId is invalid", "subjectId");
}
if (groupId < 1)
{
throw new ArgumentException("GroupId is invalid", "groupId");
}
if ((term < 1) || (term > 12))
{
throw new ArgumentException("Term is invalid", "term");
}
Teacher teacher = db.Teachers.Get(t => t.Id == teacherId).SingleOrDefault();
Subject subject = db.Subjects.Get(s => s.Id == subjectId).SingleOrDefault();
Group group = db.Groups.Get(g => g.Id == groupId).SingleOrDefault();
TeachersWorkload workload = new TeachersWorkload()
{
Teacher = teacher ?? throw new ArgumentException("Teacher was not found", "teacherId"),
Group = group ?? throw new ArgumentException("Group was not found", "groupId"),
Subject = subject ?? throw new ArgumentException("Subject was not found", "subjectId"),
Term = term
};
if (db.TeachersWorkloads.Get(tw => (tw.Teacher.Id == teacherId) &&
(tw.Subject.Id == subjectId) &&
(tw.Group.Id == groupId) &&
(tw.Term == term)).Any())
{
throw new InvalidOperationException("This teacher workload is already exists");
}
db.TeachersWorkloads.Add(workload);
db.Save();
TeachersWorkloadBll workloadBll = mapper.Map <TeachersWorkloadBll>(workload);
return(workloadBll);
}
public MarkBll EditMarkByCurrentTeacher(int studentId, int subjectId, int term, int grade)
{
if ((term < 1) || (term > 12))
{
throw new ArgumentException("Term is not valid", "term");
}
if ((grade < 0) || (grade > 5))
{
throw new ArgumentException("Grade is not valid", "grade");
}
StudentBll student = mapper.Map <StudentBll>(db.Students.Get(st => st.Id == studentId).SingleOrDefault());
if (student == null)
{
throw new ArgumentException("Student not found", "studentId");
}
TeachersWorkloadBll tws = GetTWOfCurrentTeacher().Where(tw => (tw.Subject.Id == subjectId) &&
(tw.Group.Id == student.Group.Id) &&
(tw.Term == term))
.SingleOrDefault();
MarkBll mark = markService.EditMark(student, grade, tws);
return(mark);
}