// helper methods
private async Task <string> SetPathAndUpload(AnswerViewModel answerViewModel)
{
// for more advanced projects add a composite file provider - for now wwwroot
// https://docs.microsoft.com/en-us/aspnet/core/fundamentals/file-providers?view=aspnetcore-5.0#compositefileprovider
string serverImagesDirectory = Path.Combine(_webHostEnvironment.WebRootPath, "uploads");
string uniqueFileName = _fileOperations.AssembleAnswerUploadedFileName(answerViewModel.UserId, answerViewModel.Image.FileName);
string filePath = Path.Combine(serverImagesDirectory, uniqueFileName);
await answerViewModel.Image.CopyToAsync(new FileStream(filePath, FileMode.Create));
return(uniqueFileName);
}