public async Task ExternalLoginConfirmation()

in labs/vstsextend/launchdarkly/codesnippet/AccountController.cs [401:441]
33 lines of code
7 McCabe index (conditional complexity)

        public async Task<IActionResult> ExternalLoginConfirmation(ExternalLoginConfirmationViewModel model, string returnUrl = null)
        {
            if (SignInManager.IsSignedIn(User))
            {
                return RedirectToAction("Index", "Manage");
            }

            if (ModelState.IsValid)
            {
                // Get the information about the user from the external login provider
                var info = await SignInManager.GetExternalLoginInfoAsync();
                if (info == null)
                {
                    return View("ExternalLoginFailure");
                }

                var user = new ApplicationUser { UserName = model.Email, Email = model.Email };
                var result = await UserManager.CreateAsync(user);

                if (result.Succeeded)
                {
                    result = await UserManager.AddLoginAsync(user, info);

                    // If signed in with OpenIdConnect, make the user an Admin
                    if (string.Equals(info.LoginProvider, "OpenIdConnect", StringComparison.Ordinal))
                    {
                        await UserManager.AddClaimAsync(user, new Claim(Areas.Admin.AdminConstants.ManageStore.Name, Areas.Admin.AdminConstants.ManageStore.Allowed));
                    }

                    if (result.Succeeded)
                    {
                        await SignInManager.SignInAsync(user, isPersistent: false);
                        return RedirectToLocal(returnUrl);
                    }
                }
                AddErrors(result);
            }

            ViewBag.ReturnUrl = returnUrl;
            return View(model);
        }