public IActionResult Submit(int id)
{
var homework = _context.Homeworks
.Include(h => h.Subject)
.FirstOrDefault(h => h.Id == id);
if (homework == null)
{
return(NotFound());
}
var model = new HomeworkSubmitViewModel
{
Id = homework.Id,
SubjectName = homework.Subject.Name,
Name = homework.Name
};
return(View(model));
}
public async Task <IActionResult> Submit([Bind("Id,Document")] HomeworkSubmitViewModel submitViewModel)
{
var homework = _context.Homeworks
.Include(h => h.Subject)
.FirstOrDefault(h => h.Id == submitViewModel.Id);
if (homework == null)
{
return(NotFound());
}
if (homework.Deadline < DateTime.Now)
{
ModelState.AddModelError("Document", "Deadline passed");
}
if (!ModelState.IsValid)
{
submitViewModel.Name = homework.Name;
submitViewModel.SubjectName = homework.Subject.Name;
return(View(submitViewModel));
}
var submited = await _context.SubmitedHomeworks
.Include(sh => sh.Document)
.FirstOrDefaultAsync(sh => sh.StudentId == User.GetLoggedInUserId <string>() && sh.HomeworkId == homework.Id);
if (submited != null)
{
_context.SubmitedHomeworks.Remove(submited);
_context.Documents.Remove(submited.Document);
}
var extension = Path.GetExtension(submitViewModel.Document.FileName);
if (extension == null || extension.Length > 4)
{
return(BadRequest("Not supported file type"));
}
var document = new Document
{
Name = $"homework_{homework.Id}_{Guid.NewGuid()}",
ContentType = submitViewModel.Document.ContentType,
Extension = extension
};
using (var memoryStream = new MemoryStream())
{
await submitViewModel.Document.CopyToAsync(memoryStream);
if (memoryStream.Length > 2097152)
{
ModelState.AddModelError("File", "The file is larger than 2MB.");
submitViewModel.Name = homework.Name;
submitViewModel.SubjectName = homework.Subject.Name;
return(View(submitViewModel));
}
document.Data = memoryStream.ToArray();
}
_context.Documents.Add(document);
submited = new SubmitedHomework
{
StudentId = User.GetLoggedInUserId <string>(),
HomeworkId = homework.Id,
Time = DateTime.Now,
Document = document
};
_context.SubmitedHomeworks.Add(submited);
_context.SaveChanges();
return(RedirectToAction(nameof(Details), new { id = homework.Id }));
}