public async Task <IActionResult> ExternalLoginCallback(string returnUrl = null, string remoteError = null)
{
if (remoteError != null)
{
ModelState.AddModelError(string.Empty, $"Error from external provider: {remoteError}");
return(View(nameof(Login)));
}
ExternalLoginInfo info = await _signInManager.GetExternalLoginInfoAsync();
if (info == null)
{
return(RedirectToAction(nameof(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)
{
_logger.LogInformation(5, "User logged in with {Name} provider.", info.LoginProvider);
return(RedirectToLocal(returnUrl));
}
if (result.RequiresTwoFactor)
{
return(RedirectToAction(nameof(SendCode), new { ReturnUrl = returnUrl }));
}
if (result.IsLockedOut)
{
return(View("Lockout"));
}
else
{
if (info == null)
{
return(View("ExternalLoginFailure"));
}
Dictionary <string, string> tokenData = info.AuthenticationTokens.ToDictionary(x => x.Name, x => x.Value);
var user = new ApplicationUser
{
FacebookID = info.ProviderKey,
Email = info.Principal.FindFirstValue(ClaimTypes.Email),
DisplayName = info.Principal.FindFirstValue("http://schemas.xmlsoap.org/ws/2005/05/identity/claims/name"),
UserName = info.ProviderKey,
AuthToken = tokenData["access_token"],
AuthTokenExpiration = DateTime.Parse(tokenData["expires_at"]),
URLPath = await _fbapi.GetAvatarURL(info.ProviderKey)
};
IdentityResult identity = await _userManager.CreateAsync(user);
if (identity.Succeeded)
{
identity = await _userManager.AddLoginAsync(user, info);
if (identity.Succeeded)
{
identity = await _userManager.AddToRoleAsync(user, RoleHandler.Post);
if (identity.Succeeded)
{
await _signInManager.SignInAsync(user, isPersistent : false);
_logger.LogInformation(6, "User created an account using {Name} provider.", info.LoginProvider);
return(RedirectToLocal(returnUrl));
}
AddErrors(identity);
}
AddErrors(identity);
}
AddErrors(identity);
return(View("Error"));
//// If the user does not have an account, then ask the user to create an account.
//ViewData["ReturnUrl"] = returnUrl;
//ViewData["LoginProvider"] = info.LoginProvider;
//var email = info.Principal.FindFirstValue(ClaimTypes.Email);
//return View("ExternalLoginConfirmation", new ExternalLoginConfirmationViewModel { Email = email });
}
}