public Grades createGrade(int realisationId, string name, string maxValue)
{
using (var db = new NTR2013Entities())
{
var grade = new Grades { RealisationID = realisationId, Name = name, MaxValue = maxValue };
db.Grades.Add(grade);
db.SaveChanges();
return grade;
}
}
//dodaje ocene do realizacji
//szuka realizacji
//sprawdza czy name jest unikatowe w realizacji
public GradesResult addGrades(int realizationId, string name, string maxValue)
{
using (var db = new NTR2013Entities())
{
var original = db.Realisations.Find(realizationId);
/*
List<Realisations> i = db.Realisations.ToList();
bool f = false;
foreach (Realisations r in i)
{
if (r.RealisationID == realizationId)
{
f = true;
break;
}
}
*/
//
if (original == null)
return new GradesResult(ErrorMessage.ADD_GRADES_COULD_NOT_FIND_REALIZATIONS_ID);
List<Grades> list = getGrades(realizationId);
foreach (Grades g in list)
{
if (g.Name.Equals(name))
return new GradesResult(ErrorMessage.ADD_GRADES_NAME_EXISTS);
}
Grades grade = new Grades { RealisationID = realizationId, Name = name, MaxValue = maxValue, Realisations = null };
Grades result = db.Grades.Add(grade);
db.SaveChanges();
result.Realisations = null;
return new GradesResult(result);
}
}
public GradesResult(string msg)
{
this.data = null;
this.msg = msg;
}
public GradesResult(Grades data)
{
this.data = data;
this.msg = null;
}
public GradesResult removeGrades(int id, byte[] currentTimeStamp)
{
using (var db = new NTR2013Entities())
{
var original = db.Grades.Find(id);
if (original != null)
{
//Console.WriteLine("sfasdfasdf stamp" + Convert.ToString(original.TimeStamp));
if (!compareTimeStamp(original.TimeStamp, currentTimeStamp))
{
GradesResult result = new GradesResult(ErrorMessage.REMOVE_GRADES_CONCURRENCY);
Grades grade = new Grades { GradeID = original.GradeID, RealisationID = original.RealisationID, Name = original.Name, MaxValue = original.MaxValue, TimeStamp = original.TimeStamp, Realisations = null, GradeValues = null };
result.data = grade;
return result;
}
List<GradeValues> list = db.GradeValues.ToList();
string studentsToEdit = "";
foreach (GradeValues g in list)
{
if (g.GradeID == id)
{
//Value 10 pleaces
if (g.Value.Equals(" "))
db.GradeValues.Remove(g);
else
{
//sprawdzenie studentow z ocena
var originalRegistration = db.Registrations.Find(g.RegistrationID);
var originalStudent = db.Students.Find(originalRegistration.StudentID);
studentsToEdit += originalStudent.FirstName + " " + originalStudent.LastName + ", ";
}
}
}
if (!studentsToEdit.Equals(""))
{
studentsToEdit = studentsToEdit.Substring(0, studentsToEdit.Length - 2);
return new GradesResult(studentsToEdit);
}
db.Grades.Remove(original);
db.SaveChanges();
return new GradesResult(original);
}
return new GradesResult(ErrorMessage.REMOVE_GRADES_COULD_NOT_FIND_GRADES_ID);
}
}
public GradesResult editGrades(int gradeId, string name, string maxValue, byte[] currentTimeStamp)
{
using (var db = new NTR2013Entities())
{
var original = db.Grades.Find(gradeId);
if (original != null)
{
if (!compareTimeStamp(original.TimeStamp, currentTimeStamp))
{
GradesResult result = new GradesResult(ErrorMessage.REMOVE_GRADES_CONCURRENCY);
Grades g = new Grades { GradeID = original.GradeID, RealisationID = original.RealisationID, Name = original.Name, MaxValue = original.MaxValue, TimeStamp = original.TimeStamp, Realisations = null, GradeValues = null };
result.data = g;
return result;
}
List<Grades> list = getGrades(original.RealisationID);
foreach (Grades g in list)
{
if (g.Name.Equals(name))
return new GradesResult(ErrorMessage.EDIT_GRADES_NAME_EXISTS);
}
if (!original.MaxValue.Equals(maxValue))
{
List<GradeValues> l = db.GradeValues.ToList();
string studentsToEdit = "";
foreach (GradeValues g in l)
{
if (g.GradeID == original.GradeID)
{
//Value 10 pleaces
if (!g.Value.Equals(" "))
{
//sprawdzenie studentow z ocena
var originalRegistration = db.Registrations.Find(g.RegistrationID);
var originalStudent = db.Students.Find(originalRegistration.StudentID);
studentsToEdit += originalStudent.FirstName + " " + originalStudent.LastName + ", ";
}
}
}
if (!studentsToEdit.Equals(""))
{
studentsToEdit = studentsToEdit.Substring(0, studentsToEdit.Length - 2);
return new GradesResult(studentsToEdit);
}
}
original.Name = name;
original.MaxValue = maxValue;
//original.TimeStamp = null;
db.SaveChanges();
Grades grade = new Grades { GradeID = original.GradeID, RealisationID = original.RealisationID, Name = original.Name, MaxValue = original.MaxValue, TimeStamp = original.TimeStamp, Realisations = null, GradeValues = null };
return new GradesResult(grade);
}
return new GradesResult(ErrorMessage.EDIT_GRADES_COULD_NOT_FIND_GRADES_ID);
}
}
