public async Task <IActionResult> SetMainPhoto(int idProduct, int id) { var product = await _repo.GetProduct(idProduct); if (!product.Photos.Any(p => p.Id == id)) { return(Unauthorized()); } var photoFromRepo = await _repo.GetPhoto(id); if (photoFromRepo.IsMain) { return(BadRequest("This is already the main photo")); } var currentMainPhoto = await _repo.GetMainPhotoForProduct(idProduct); currentMainPhoto.IsMain = false; photoFromRepo.IsMain = true; if (await _repo.SaveAll()) { return(NoContent()); } return(BadRequest("Could not set photo to main")); }