public async Task ExternalLoginCallback()

in Hands-on lab/lab-files/src/src/PartsUnlimitedWebsite/Controllers/AccountController.cs [341:373]

• 29 lines of code
• 5 McCabe index (conditional complexity)

        public async Task<IActionResult> ExternalLoginCallback(string returnUrl = null)
        {
            var info = await SignInManager.GetExternalLoginInfoAsync();
            if (info == null)
            {
                return RedirectToAction("Login");
            }

            // Sign in the user with this external login provider if the user already has a login
            var result = await SignInManager.ExternalLoginSignInAsync(info.LoginProvider, info.ProviderKey,
                isPersistent: false);
            if (result.Succeeded)
            {
                return RedirectToLocal(returnUrl);
            }
            if (result.RequiresTwoFactor)
            {
                return RedirectToAction("SendCode", new { ReturnUrl = returnUrl });
            }
            if (result.IsLockedOut)
            {
                return View("Lockout");
            }
            else
            {
                // If the user does not have an account, then prompt the user to create an account
                ViewBag.ReturnUrl = returnUrl;
                ViewBag.LoginProvider = info.LoginProvider;
                // REVIEW: handle case where email not in claims?
                var email = info.Principal.FindFirstValue(ClaimTypes.Email);
                return View("ExternalLoginConfirmation", new ExternalLoginConfirmationViewModel { Email = email });
            }
        }