public async Task <IActionResult> Register(RegisterModel model)
        {
            if (ModelState.IsValid)
            {
                UserDTO user = _authorizationService.FindUserByEmail(new UserDTO {
                    Email = model.Email, Password = model.Password
                });
                if (user == null)
                {
                    _authorizationService.AddUser(new UserDTO {
                        Email = model.Email, Password = model.Password
                    });

                    await Authenticate(model.Email);

                    return(RedirectToAction("Index", "Home"));
                }
                else
                {
                    ModelState.AddModelError("", "Некорректные логин и(или) пароль");
                }
            }
            return(View(model));
        }