public async Task Seed()
        {
            var user = new HegemotBooksUser
            {
                UserName = "******",
                Email    = "*****@*****.**",
                FullName = "Root"
            };

            var result = await this.userManager.CreateAsync(user, "root");
        }
        public async Task <IActionResult> OnPostAsync(string returnUrl = null)
        {
            returnUrl = returnUrl ?? Url.Content("~/");
            if (ModelState.IsValid)
            {
                var user = new HegemotBooksUser {
                    UserName = Input.Username, Email = Input.Email, FullName = Input.FullName
                };

                var result = await _userManager.CreateAsync(user, Input.Password);

                if (_userManager.Users.Count() == 1)
                {
                    await _userManager.AddToRoleAsync(user, "Admin");
                }
                else
                {
                    await _userManager.AddToRoleAsync(user, "User");
                }

                if (result.Succeeded)
                {
                    _logger.LogInformation("User created a new account with password.");

                    //var code = await _userManager.GenerateEmailConfirmationTokenAsync(user);
                    //var callbackUrl = Url.Page(
                    //    "/Account/ConfirmEmail",
                    //    pageHandler: null,
                    //    values: new { userId = user.Id, code = code },
                    //    protocol: Request.Scheme);

                    //await _emailSender.SendEmailAsync(Input.Email, "Confirm your email",
                    //    $"Please confirm your account by <a href='{HtmlEncoder.Default.Encode(callbackUrl)}'>clicking here</a>.");

                    await _signInManager.SignInAsync(user, isPersistent : false);

                    return(LocalRedirect(returnUrl));
                }
                foreach (var error in result.Errors)
                {
                    ModelState.AddModelError(string.Empty, error.Description);
                }
            }

            // If we got this far, something failed, redisplay form
            return(Page());
        }