public async Task <IEnumerable <string> > SendSaleFile(FileStatusParamDto fileStatusParamDto, IFormFile formFile, int network, int user)
        {
            var extensions = Path.GetFileName(formFile.FileName).Split('.').Last().ToUpper();

            if (extensions == "XLS")
            {
                return new string[1] {
                           "favor importar arquivo com extensão .xlsx."
                }
            }
            ;

            if (extensions != "XLSX")
            {
                return new string[1] {
                           "favor importar arquivo com extensão .xlsx."
                }
            }
            ;

            if (await _saleFileRepository.ExistFile(fileStatusParamDto.CurrentMonth, fileStatusParamDto.CurrentYear, network))
            {
                return new string[1] {
                           "Existe um arquivo em fase de processamento ou ja foi processado"
                }
            }
            ;

            var fileName = $"{DateTime.Now.Year}" +
                           $"{DateTime.Now.Month.ToString().PadLeft(2, '0')}" +
                           $"{DateTime.Now.Day.ToString().PadLeft(2, '0')}" +
                           $"{DateTime.Now.Hour.ToString().PadLeft(2, '0')}" +
                           $"{DateTime.Now.Minute.ToString().PadLeft(2, '0')}" +
                           $"{DateTime.Now.Second.ToString().PadLeft(2, '0')}.{extensions}";

            var path = Path.Combine(_env.WebRootPath, $"Content/SpreadSheet/Sale/{Path.GetFileName(fileName)}");

            if (File.Exists(path))
            {
                File.Delete(path);
            }

            using (var stream = new FileStream(path, FileMode.Create))
            {
                await formFile.CopyToAsync(stream);
            }

            var spreadSheetMessages = new List <string>();
            var columnsToValidate   = new string[11] {
                "REVENDA", "COD LOJA", "CNPJ", "CPF VENDEDOR", "NOME VENDEDOR", "CATEGORIA", "DESCRIÇÃO PRODUTO", "QUANTIDADE", "DATA VENDA", "NÚMERO PEDIDO", "CÓDIGO EAN"
            };
            var fileInfo = new FileInfo(path);

            using (var excelPackage = new ExcelPackage(fileInfo))
            {
                var tab = excelPackage.Workbook.Worksheets[1];

                spreadSheetMessages = FileManipulator.ValidateSpreadsheet(tab, columnsToValidate);
            }

            if (spreadSheetMessages.Count == 0)
            {
                _saleFileRepository.Save(new SaleFile
                {
                    CreatedAt    = DateTime.Now,
                    CurrentMonth = fileStatusParamDto.CurrentMonth,
                    CurrentYear  = fileStatusParamDto.CurrentYear,
                    FileName     = fileName,
                    FileStatus   = await _fileStatusRepository.GetById((int)FileStatusEnum.Pending),
                    Network      = await _networkRepository.GetById(network),
                    User         = await _userRepository.GetById(user)
                });

                await _unitOfWork.CommitAsync();

                spreadSheetMessages.Add("Carga recebida com sucesso. Aguarde a validação dos seus dados.");
            }

            return(spreadSheetMessages);
        }