public async Task <Unit> Handle(CreateStudentEnrollment request, CancellationToken cancellationToken)
{
var student = new Student
{
FirstName = request.FirstName, LastName = request.LastName, IndexNumber = request.IndexNumber,
BirthDate = request.BirthDate
};
var studies = await FindStudies(request, cancellationToken);
var firstSemesterEnrollments = studies.Enrollment.Where(e => e.Semester == 1).ToList();
Enrollment enrollment;
if (!firstSemesterEnrollments.Any())
{
enrollment = new Enrollment
{
Semester = 1,
IdStudyNavigation = studies,
StartDate = DateTime.UtcNow
};
await _context.Enrollment.AddAsync(enrollment, cancellationToken);
}
else
{
enrollment = firstSemesterEnrollments.First();
}
student.IdEnrollementNavigation = enrollment;
await _context.Student.AddAsync(student, cancellationToken);
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}
public async Task <Unit> Handle(DeleteStudent request, CancellationToken cancellationToken)
{
var student = await _context.Student.FirstOrDefaultAsync(s => s.IndexNumber == request.Index,
cancellationToken : cancellationToken);
if (student is null)
{
throw new Exception("Student not found");
}
_context.Student.Remove(student);
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}
public async Task <Unit> Handle(EditStudent request, CancellationToken cancellationToken)
{
var student = await _context.Student.FirstOrDefaultAsync(s => s.IndexNumber == request.Index, cancellationToken : cancellationToken);
if (student is null)
{
throw new Exception("Student not found");
}
if (!string.IsNullOrEmpty(request.FirstName))
{
student.FirstName = request.FirstName;
}
if (!string.IsNullOrEmpty(request.LastName))
{
student.LastName = request.LastName;
}
await _context.SaveChangesAsync(cancellationToken);
return(Unit.Value);
}