public ActionResult AuthenticateCallback(string providerKey)
{
if (string.IsNullOrEmpty(providerKey))
{
throw new ArgumentNullException("providerKey");
}
// Determine which settings we need, based on the Provider.
var settings = _authenticationService.GetAuthenticateServiceSettings(providerKey, Request.Url, "account/authenticatecallback");
// Don't check for somet State.
settings.State = null;
var model = new AuthenticateCallbackViewModel();
try
{
// Grab the authenticated client information.
model.AuthenticatedClient = _authenticationService.GetAuthenticatedClient(settings, Request.QueryString);
}
catch (Exception exception)
{
model.Exception = exception;
}
if (model.Exception == null)
{
var user = _userRepository.GetByUsername(model.AuthenticatedClient.UserInformation.UserName);
if (user == null)
{
if (SessionFacade.User != null)
{
//Hook up accounts
_tracer.WriteTrace("User logged in, external login failed");
var dbUser = _userRepository.Get(SessionFacade.User.Id);
SetAuthenticationHandle(model, dbUser);
_userRepository.Update(dbUser);
SignInUser(dbUser.Username, false, dbUser);
}
else
{
//Add new user
_tracer.WriteTrace("User not logged in, external login failed");
var newUser = new User();
SetAuthenticationHandle(model, newUser);
newUser.Name = model.AuthenticatedClient.UserInformation.Name;
newUser.ImgUrl = model.AuthenticatedClient.UserInformation.Picture;
newUser.Email = model.AuthenticatedClient.UserInformation.Email;
newUser.Username = model.AuthenticatedClient.UserInformation.UserName;
_userRepository.Create(newUser);
SignInUser(newUser.Username, false, newUser);
}
}
else if (SessionFacade.User != null && user != SessionFacade.User)
{
//TODO: Add error
}
else
{
SignInUser(user.Username, false, user);
}
}
return RedirectToAction("Index", "Home");
}
private void SetAuthenticationHandle(AuthenticateCallbackViewModel model, User dbUser)
{
if (model.AuthenticatedClient.ProviderName == Enum.GetName(typeof (ProviderNames), ProviderNames.twitter))
dbUser.TwitterHandle = model.AuthenticatedClient.UserInformation.Id;
else if (model.AuthenticatedClient.ProviderName == Enum.GetName(typeof (ProviderNames), ProviderNames.facebook))
dbUser.FacebookHandle = model.AuthenticatedClient.UserInformation.Id;
else if (model.AuthenticatedClient.ProviderName == Enum.GetName(typeof (ProviderNames), ProviderNames.google))
dbUser.GoogleHandle = model.AuthenticatedClient.UserInformation.Id;
}
