public Student GetStudent(string indexNumber, APBDContext context)
{
var student = context.Student
.First(x => x.IndexNumber == indexNumber);
return(student);
}
public bool ChangePassword(string indexNumber, ChangePasswordRequests request)
{
_context = new APBDContext();
Student student;
try
{
student = GetStudent(indexNumber, _context);
if (!student.Password.Equals(request.OldPassword))
{
return(false);
}
}
catch
{
return(false);
}
student.Password = request.NewPassword;
_context.SaveChanges();
/*var updatedStudent = new Student
* {
* IndexNumber = indexNumber,
* Password = request.NewPassword
* };
*
* _context.Attach(updatedStudent);
* _context.Entry(updatedStudent).Property("Password").IsModified = true;
* _context.SaveChanges();*/
return(true);
}
public Student GetStudent(string indexNumber)
{
_context = new APBDContext();
var student = _context.Student
.First(x => x.IndexNumber == indexNumber);
return(student);
}
public EnrollmentDbService(
IStudyDbService studyDbService,
IStudentDbService studentDbService,
APBDContext context)
{
this.studyDbService = studyDbService;
this.studentDbService = studentDbService;
this.context = context;
}
public void DeleteStudent(string indexNumber)
{
_context = new APBDContext();
var student = new Student
{
IndexNumber = indexNumber
};
_context.Remove(student);
_context.SaveChanges();
}
/*public Enrollment GetEnrollment(string indexNumber)
* {
* _context = new APBDContext();
* var student = _context.Student
* .First(x => x.IndexNumber == indexNumber);
* var enrollment = _context.Enrollment
* .First(x => x.IdEnrollment == student.IdEnrollment);
* return enrollment;
* }*/
public Enrollment EnrollStudent(EnrollStudentRequests request)
{
_context = new APBDContext();
Studies study;
try
{
study = _context.Studies
.First(x => x.Name.Equals(request.Studies));
}
catch
{
return(null);
}
Enrollment enrollment;
try
{
enrollment = _context.Enrollment
.Where(x => x.IdStudy.Equals(study.IdStudy))
.First(x => x.Semester == 1);
} catch
{
var newEnrollment = new Enrollment
{
IdEnrollment = _context.Enrollment
.Max(x => x.IdEnrollment) + 1,
Semester = 1,
IdStudy = study.IdStudy,
StartDate = DateTime.Today
};
_context.Enrollment.Add(newEnrollment);
enrollment = newEnrollment;
}
var idEnrollment = enrollment.IdEnrollment;
var student = new Student
{
IndexNumber = request.IndexNumber,
FirstName = request.FirstName,
LastName = request.LastName,
BirthDate = DateTime.ParseExact(request.BirthDate, "dd.MM.yyyy", CultureInfo.InvariantCulture),
IdEnrollment = idEnrollment,
Password = "******"
};
_context.Student.Add(student);
_context.SaveChanges();
return(enrollment);
}
public Enrollment PromoteStudents(PromoteStudentsRequest request)
{
_context = new APBDContext();
Studies study;
Enrollment oldEnrollment;
// Upewniam się, że w tabeli Enrollment istnieje wpis o podanej wartości Studies i Semester
try
{
study = _context.Studies
.First(x => x.Name.Equals(request.Studies));
oldEnrollment = _context.Enrollment
.Where(x => x.IdStudy.Equals(study.IdStudy))
.First(x => x.Semester == Convert.ToInt32(request.Semester));
} catch
{
return(null);
}
Enrollment enrollment;
try
{
enrollment = _context.Enrollment
.Where(x => x.IdStudy.Equals(study.IdStudy))
.First(x => x.Semester == Convert.ToInt32(request.Semester) + 1);
} catch
{
var newEnrollment = new Enrollment
{
IdEnrollment = _context.Enrollment
.Max(x => x.IdEnrollment) + 1,
Semester = Convert.ToInt32(request.Semester) + 1,
IdStudy = study.IdStudy,
StartDate = DateTime.Today
};
_context.Enrollment.Add(newEnrollment);
enrollment = newEnrollment;
}
var students = _context.Student
.Where(x => x.IdEnrollment == oldEnrollment.IdEnrollment)
.ToList();
foreach (var s in students)
{
s.IdEnrollment = enrollment.IdEnrollment;
}
_context.SaveChanges();
return(enrollment);
}
public bool deleteStudent(string indexNumber)
{
APBDContext context = new APBDContext();
var student = GetStudentByIndex(indexNumber, context);
if (student == null)
{
return(false);
}
context.Student.Remove(student);
context.SaveChanges();
return(true);
}
public EnrollmentResponse PromoteStudents(PromoteStudentsRequest request)
{
APBDContext context = new APBDContext();
//istnienie wpisów
Enrollment enr = context.Enrollment
.Where(x => x.Semester == request.Semester)
.Where(x => x.IdStudy == context.Studies.Where(y => y.Name == request.Studies).FirstOrDefault().IdStudy)
.FirstOrDefault();
if (enr == null)
{
return(null);
}
//istnienie wpisu +1
Enrollment enr2 = context.Enrollment
.Where(x => x.Semester == request.Semester + 1)
.Where(x => x.IdStudy == enr.IdStudy)
.FirstOrDefault();
if (enr2 == null)
{
context.Enrollment.Add(enr2 = new Enrollment {
Semester = request.Semester + 1,
StartDate = DateTime.Today,
IdEnrollment = context.Enrollment.Select(x => x.IdEnrollment).Max() + 1,
IdStudy = enr.IdStudy
});
}
//promocja studentów
var students = context.Student
.Where(x => x.IdEnrollment == enr.IdEnrollment).ToList();
foreach (Student s in students)
{
s.IdEnrollment = enr2.IdEnrollment;
}
context.SaveChanges();
// stworzenie Enrollmentu
EnrollmentResponse enrResp = new EnrollmentResponse();
enrResp.Semester = enr2.Semester;
enrResp.StudyName = request.Studies;
enrResp.StartDate = enr2.StartDate.ToString();
return(enrResp);
}
public Student GetStudentByIndex(string index, APBDContext con)
{
APBDContext context;
if (con == null)
{
context = new APBDContext();
}
else
{
context = con;
}
var student = context.Student
.Where(x => x.IndexNumber == index)
.FirstOrDefault();
return(student);
}
public Student ModifyStudent(ModifyRequest request)
{
APBDContext context = new APBDContext();
var student = GetStudentByIndex(request.IndexNumber);
if (student != null)
{
if (request.FirstName != null)
{
student.FirstName = request.FirstName;
}
if (request.LastName != null)
{
student.LastName = request.LastName;
}
if (request.BirthDate != null)
{
student.BirthDate = request.BirthDate;
}
context.SaveChanges();
return(student);
}
return(null);
}
public List <Student> getStudents()
{
var context = new APBDContext();
return(context.Student.ToList());
}
public EnrollmentResponse EnrollStudent(EnrollStudentRequest request)
{
var enr = new EnrollmentResponse();
// request
APBDContext context = new APBDContext();
//istnienie studiow
Studies studies = context.Studies.Where(x => x.Name == request.Studies).FirstOrDefault();
if (studies == null)
{
return(null);
}
//wpis do tabeli enrollment
//czy wpis istnieje
Enrollment enrollment = context.Enrollment
.Where(x => x.IdStudy == studies.IdStudy)
.Where(x => x.Semester == 1)
.FirstOrDefault();
// jesli nie to dodaj wpis
if (enrollment == null)
{
enrollment = new Enrollment
{
Semester = 1,
StartDate = DateTime.Today,
IdEnrollment = context.Enrollment.Select(x => x.IdEnrollment).Max() + 1,
IdStudy = studies.IdStudy
};
context.Enrollment.Add(enrollment);
}
//sprawdzenie unikalnosci indeksu
if (context.Student.Select(x => x.IndexNumber).Any(x => x == request.IndexNumber))
{
return(null);
}
//dodanie studenta
Student student = new Student
{
IndexNumber = request.IndexNumber,
FirstName = request.FirstName,
LastName = request.LastName,
BirthDate = DateTime.ParseExact(request.BirthDate, "yyyy-mm-dd", System.Globalization.CultureInfo.InvariantCulture),
IdEnrollment = enrollment.IdEnrollment
};
context.Student.Add(student);
context.SaveChanges();
// stworzenie Enrollmentu
enr.Semester = enrollment.Semester;
enr.StudyName = studies.Name;
enr.StartDate = enrollment.StartDate.ToString();
return(enr);
}
public IEnumerable <Student> GetStudents()
{
_context = new APBDContext();
return(_context.Student.ToList());
}
public StudyDbService(APBDContext context)
{
this.context = context;
}
public APBDDbService(APBDContext context)
{
_context = context;
}
