public async Task <IActionResult> GetSubmissionFile(int submissionId)
{
GetSubmissionFileDto dto = new GetSubmissionFileDto {
SubmissionId = submissionId
};
ServiceResponse <string> response = await _submissionService.DownloadSubmission(dto);
if (!response.Success)
{
return(BadRequest(response));
}
string path = response.Data;
string type = GetContentType(path);
if (type == null)
{
return(BadRequest("this file type is not supported"));
}
var memory = new MemoryStream();
using (var stream = new FileStream(path, FileMode.Open))
{
await stream.CopyToAsync(memory);
}
memory.Position = 0;
return(File(memory, type, Path.GetFileName(path)));
}
public async Task <ServiceResponse <string> > DownloadSubmission(GetSubmissionFileDto dto)
{
ServiceResponse <string> response = new ServiceResponse <string>();
Submission submission = await _context.Submissions
.Include(s => s.AffiliatedGroup).ThenInclude(pg => pg.GroupMembers)
.Include(s => s.AffiliatedAssignment)
.FirstOrDefaultAsync(s => s.Id == dto.SubmissionId);
if (submission == null)
{
response.Data = null;
response.Message = "There is no such submission";
response.Success = false;
return(response);
}
if (!submission.HasFile)
{
response.Data = null;
response.Message = "This group has not yet submitted their file for this assigment";
response.Success = false;
return(response);
}
Course course = await _context.Courses.Include(c => c.Instructors).FirstOrDefaultAsync(c => c.Id == submission.AffiliatedAssignment.AfilliatedCourseId);
if (!submission.AffiliatedAssignment.VisibilityOfSubmission &&
!course.Instructors.Any(cu => cu.UserId == GetUserId()) &&
!submission.AffiliatedGroup.GroupMembers.Any(u => u.UserId == GetUserId()))
{
response.Data = null;
response.Message = "You are not authorized to see this submission";
response.Success = false;
return(response);
}
response.Data = submission.FilePath;
response.Success = true;
return(response);
}
