// basic upload, ideally this would be streamed, cleanup temp files and have more error checking
        public async Task <IActionResult> UploadFile(List <IFormFile> files, string fileType)
        {
            // based on MSDN example
            long size     = files.Sum(f => f.Length);
            var  filePath = Path.GetTempFileName();

            foreach (var formFile in files)
            {
                if (formFile.Length > 0)
                {
                    using (var stream = new FileStream(filePath, FileMode.Create))
                    {
                        await formFile.CopyToAsync(stream);
                    }
                }
            }

            string[] fileLines = aspBasicService.ReadFile(filePath);
            if (aspBasicService.IsFileValid(fileLines, fileType))
            {
                var result = aspBasicService.ImportFile(fileLines, fileType);
                ViewData["UploadResult"] = result;
                return(View());
            }
            else
            {
                ViewData["UploadResult"] = new ImportResult()
                {
                    isFatalError = true,
                    errorText    = "File is in invalid format"
                };
                return(View());
            }
        }
 private void readFileLinesImportResult(string fileNameOnly)
 {
     fileLines    = aspBasicService.ReadFile("../../../test_files/" + fileNameOnly); // TODO should be a smarter way to find the project dir
     importResult = aspBasicService.ImportFile(fileLines, FILE_TYPE);
 }