public async Task <IFileStreamWithInfo> GetSubmissionFileAsync(Controller controller, int assignmentId, string studentId)
{
SubmissionDTO submission = await service.GetByCompositeKeysAsync(assignmentId, studentId);
if (submission == null || submission.SubmitFile == null)
{
return(null);
}
string origFileName = submission.SubmitFile.FileName;
string fileGuid = submission.SubmitFile.FileGuid;
string mimeType = MimeMapping.GetMimeMapping(origFileName);
IFileStreamWithInfo fileStream = null;
try
{
string filePath = Path.Combine(controller.Server.MapPath("~/Files/Assignments"), fileGuid);
fileStream = new FileStreamWithInfo
{
FileStream = File.ReadAllBytes(filePath),
FileName = origFileName,
FileType = mimeType
};
}
catch
{
return(null);
}
return(fileStream);
}
public async Task <IFileStreamWithInfo> GetAssignmentFileAsync(int assignmentId)
{
AssignmentDTO assignment = await assignmentService.GetByIdAsync(assignmentId);
if (assignment == null || assignment.AssignmentFile == null)
{
return(null);
}
string origFileName = assignment.AssignmentFile.FileName;
string fileGuid = assignment.AssignmentFile.FileGuid;
string mimeType = MimeMapping.GetMimeMapping(origFileName);
IFileStreamWithInfo fileStream = null;
try
{
string filePath = Path.Combine(HttpContext.Current.Server.MapPath("~/Files/Assignments"), fileGuid);
fileStream = new FileStreamWithInfo
{
FileStream = File.ReadAllBytes(filePath),
FileName = origFileName,
FileType = mimeType
};
}
catch (Exception)
{
return(null);
}
return(fileStream);
}
public async Task <FileResult> DownloadAssignmentFile(int?id)
{
if (id == null)
{
throw new ArgumentNullException();
}
IFileStreamWithInfo fileStream = await _service.GetAssignmentFileAsync((int)id);
return(File(fileStream.FileStream, fileStream.FileType, fileStream.FileName));
}
public async Task <FileResult> DownloadSubmissionFile(int assignmentId, string studentId)
{
if (studentId == null)
{
throw new ArgumentNullException();
}
IFileStreamWithInfo fileStream = await _service.GetSubmissionFileAsync(this, assignmentId, studentId);
return(File(fileStream.FileStream, fileStream.FileType, fileStream.FileName));
}
