public async Task <ServiceResponse <string> > DownloadAssignmentFile(GetAssignmentFileDto dto)
{
ServiceResponse <string> response = new ServiceResponse <string>();
User user = await _context.Users.Include(u => u.ProjectGroups).ThenInclude(pgu => pgu.ProjectGroup).FirstOrDefaultAsync(u => u.Id == GetUserId());
Assignment assignment = await _context.Assignments.FirstOrDefaultAsync(a => a.Id == dto.AssignmentId);
if (assignment == null || assignment.FilePath == null)
{
response.Data = "No submission";
response.Message = "There is no submission under this id";
response.Success = false;
return(response);
}
Course course = await _context.Courses.FirstOrDefaultAsync(c => c.Id == assignment.AfilliatedCourseId);
ProjectGroup projectGroup = await _context.ProjectGroups.FirstOrDefaultAsync(pg => pg.AffiliatedCourseId == course.Id);
if (course == null || projectGroup == null)
{
response.Data = "Not allowed";
response.Message = "You are not allowed to see file for this assignment";
response.Success = false;
return(response);
}
response.Data = assignment.FilePath;
return(response);
}
public async Task <IActionResult> GetAssignmentFile(int assignmentId)
{
GetAssignmentFileDto dto = new GetAssignmentFileDto {
AssignmentId = assignmentId
};
ServiceResponse <string> response = await _assignmentService.DownloadAssignmentFile(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)));
}