public IActionResult Modify(Lista lista)
{
Modify model = new Modify()
{
selectedItem = lista.selectedItem,
what = lista.what,
listy = new Listy()
};
using (var db = new MyContext())
{
NTR20Z.Activity toModify = db.activities.Find(lista.selectedSlot.activityID);
model.toModify = JsonSerializer.Serialize(toModify);
model.group = db.groups.Find(toModify.GroupID).name;
model.room = db.rooms.Find(toModify.RoomID).name;
model.teacher = db.teachers.Find(db.assignments.Single(ass => ass.GroupID == toModify.GroupID &&
ass.SubjectID == toModify.SubjectID).TeacherID).name;
var act = db.activities.Join(db.assignments, activity => new Tuple <int, int>(activity.GroupID, activity.SubjectID),
assignment => new Tuple <int, int>(assignment.GroupID, assignment.SubjectID), (activity, assignment) => new
{
ActivityID = activity.ActivityID,
SlotID = activity.SlotID,
GroupID = activity.GroupID,
RoomID = activity.RoomID,
TeacherID = assignment.TeacherID,
SubjectID = assignment.SubjectID
}).ToList();
foreach (var teacher in db.teachers)
{
if (!act.Any(act => act.TeacherID == teacher.TeacherID && act.SlotID == toModify.SlotID && act.ActivityID != toModify.ActivityID))
{
model.listy.teachers.Add(teacher.name);
}
}
foreach (var group in db.groups)
{
if (!act.Any(act => act.GroupID == group.GroupID && act.SlotID == toModify.SlotID && act.ActivityID != toModify.ActivityID))
{
model.listy.groups.Add(group.name);
}
}
foreach (var room in db.rooms)
{
if (!act.Any(act => act.RoomID == room.RoomID && act.SlotID == toModify.SlotID && act.ActivityID != toModify.ActivityID))
{
model.listy.rooms.Add(room.name);
}
}
}
return(View("Modify", model));
}
public IActionResult Delete(Modify model)
{
NTR20Z.Activity toModify = JsonSerializer.Deserialize <NTR20Z.Activity>(model.toModify);
using (var db = new MyContext())
{
NTR20Z.Activity toModifyFromDB = db.activities.Find(toModify.ActivityID);
if (toModifyFromDB == null)
{
return(View("DeleteError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
if (toModifyFromDB.Timestamp != toModify.Timestamp)
{
return(View("DeleteError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
db.activities.Remove(toModifyFromDB);
try
{
Lista.mutex.WaitOne();
db.SaveChanges();
Lista.mutex.ReleaseMutex();
}
catch (Exception)
{
Lista.mutex.ReleaseMutex();
return(View("DeleteError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
}
return(Index(new Lista()
{
what = model.what, selectedItem = model.selectedItem
}));
}
public IActionResult SetAssignmentFromModify(Modify model)
{
NTR20Z.Activity toModify = JsonSerializer.Deserialize <NTR20Z.Activity>(model.toModify);
using (var db = new MyContext())
{
int teacher = db.teachers.Single(teacher => teacher.name == model.teacher).TeacherID;
int subject = db.subjects.Single(sub => sub.name == model.subject).SubjectID;
Lista.mutex.WaitOne();
if (db.assignments.Any(ass => ass.GroupID == toModify.GroupID && (ass.TeacherID == teacher || ass.SubjectID == subject)))
{
Lista.mutex.ReleaseMutex();
return(View("TeacherUnassignable", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
db.assignments.Add(new Assignment()
{
TeacherID = teacher,
GroupID = toModify.GroupID,
SubjectID = subject
});
db.SaveChanges();
Lista.mutex.ReleaseMutex();
NTR20Z.Activity toModifyFromDB = db.activities.Find(toModify.ActivityID);
if (toModifyFromDB == null)
{
return(View("UpdateError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
if (toModifyFromDB.Timestamp != toModify.Timestamp)
{
return(View("UpdateError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
toModifyFromDB.GroupID = toModify.GroupID;
toModifyFromDB.RoomID = toModify.RoomID;
toModifyFromDB.SubjectID = subject;
try
{
Lista.mutex.WaitOne();
db.SaveChanges();
Lista.mutex.ReleaseMutex();
}
catch (Exception)
{
Lista.mutex.ReleaseMutex();
return(View("UpdateError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
}
return(Index(new Lista()
{
what = model.what, selectedItem = model.selectedItem
}));
}
public IActionResult Modify(Modify model)
{
NTR20Z.Activity toModify = JsonSerializer.Deserialize <NTR20Z.Activity>(model.toModify);
using (var db = new MyContext())
{
NTR20Z.Activity toModifyFromDB = db.activities.Find(toModify.ActivityID);
if (toModifyFromDB == null)
{
return(View("UpdateError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
if (toModifyFromDB.Timestamp != toModify.Timestamp)
{
return(View("UpdateError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
toModifyFromDB.GroupID = db.groups.Single(gr => gr.name == model.group).GroupID;
toModifyFromDB.RoomID = db.rooms.Single(gr => gr.name == model.room).RoomID;
int teacherID = db.teachers.Single(te => te.name == model.teacher).TeacherID;
if (!db.assignments.Any(ass => ass.GroupID == toModifyFromDB.GroupID && ass.TeacherID == teacherID))
{
model.toModify = JsonSerializer.Serialize(toModifyFromDB);
ViewBag.subjectList = new List <string>();
var subjects = db.subjects.ToList();
bool isEmpty = true;
foreach (var it in subjects)
{
if (!db.assignments.Any(ass => ass.GroupID == toModifyFromDB.GroupID && ass.SubjectID == it.SubjectID))
{
ViewBag.subjectList.Add(it.name);
isEmpty = false;
}
}
if (isEmpty)
{
return(View("TeacherUnassignable", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
return(View("SetAssignmentFromModify", model));
}
toModifyFromDB.SubjectID = db.assignments.Single(ass => ass.TeacherID == teacherID && ass.GroupID == toModifyFromDB.GroupID).SubjectID;
try
{
Lista.mutex.WaitOne();
db.SaveChanges();
Lista.mutex.ReleaseMutex();
}
catch (Exception)
{
Lista.mutex.ReleaseMutex();
return(View("UpdateError", new Err()
{
what = model.what, selectedItem = model.selectedItem
}));
}
}
return(Index(new Lista()
{
what = model.what, selectedItem = model.selectedItem
}));
}
