public async Task <ActionResult> UploadExcelAsync()
        {
            try
            {
                IFormFile file = Request.Form.Files[HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik").Uvoznik.AutoID.ToString()];
                if (file.Length > 0)
                {
                    int    broj    = 0;
                    string Uvoznik = "00000" + HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik").Uvoznik.AutoID.ToString();
                    Uvoznik = Uvoznik.Substring(Uvoznik.Length - 5, 5);
                    var           filePath = Path.Combine(VratiGlavnaFolder());
                    DirectoryInfo d        = new DirectoryInfo(filePath);
                    FileInfo[]    files    = d.GetFiles(Uvoznik + "_*").OrderByDescending(c => c.LastWriteTime).ToArray();
                    if (files.Length > 0)
                    {
                        broj = Convert.ToInt32(files[0].Name.Substring(6, 5));
                    }
                    string strbr = "00000" + (broj + 1).ToString();
                    strbr    = strbr.Substring(strbr.Length - 5, 5);
                    filePath = Path.Combine(filePath, Uvoznik + "_" + strbr + "_" + "excel" + Path.GetExtension(file.FileName));
                    using (var fileStream = new FileStream(filePath, FileMode.Create))
                    {
                        await file.CopyToAsync(fileStream);
                    }
                    LoggerDAO.CreateNewDocumentLog(Path.GetExtension(file.FileName), filePath, HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik").Id);
                }
            }
            catch (Exception e)
            {
                e.StackTrace.ToString();
                Response.StatusCode = 400;
            }

            return(new EmptyResult());
        }
        public async Task <ActionResult> UploadImporterAsync()
        {
            try
            {
                IFormFile file = Request.Form.Files["uvoznikFiles"];
                if (file.Length > 0)
                {
                    var filePath = Path.Combine(CreateUvoznikFolder(), Path.GetFileName(file.FileName));
                    using (var fileStream = new FileStream(filePath, FileMode.Create))
                    {
                        await file.CopyToAsync(fileStream);
                    }
                    LoggerDAO.CreateNewDocumentLog(Path.GetFileName(file.FileName), filePath, HttpContext.Session.GetObjectFromJson <KorisnikModel>("LogovaniKorisnik").Id);
                }
            }
            catch (Exception e)
            {
                e.StackTrace.ToString();
                Response.StatusCode = 400;
            }

            return(new EmptyResult());
        }