Determine login type using AWS Cognito during resume session (Swift) - swift

Question

I'm having a hard time trying to figure out how to determine the login type during a resume session using AWS Cognito. My code is based upon the MobileHub sample (below).
I've integrated a name/password mode for user pools (account creation and login) as well as as a Facebook login button which all works perfectly.
I have some logic in my application that needs to behave differently depending on the login type but I can't figure out how to do it.
Anyone done this?
func didFinishLaunching(_ application: UIApplication, withOptions launchOptions: [AnyHashable: Any]?) -> Bool {
print("didFinishLaunching:")
// Register the sign in provider instances with their unique identifier
AWSSignInManager.sharedInstance().register(signInProvider: AWSFacebookSignInProvider.sharedInstance())
AWSIdentityProfileManager.sharedInstance().register(FacebookIdentityProfile.sharedInstance(), forProviderKey: AWSFacebookSignInProvider.sharedInstance().identityProviderName)
AWSSignInManager.sharedInstance().register(signInProvider: AWSCognitoUserPoolsSignInProvider.sharedInstance())
AWSIdentityProfileManager.sharedInstance().register(UserPoolsIdentityProfile.sharedInstance(), forProviderKey: AWSCognitoUserPoolsSignInProvider.sharedInstance().identityProviderName)
setupAPIGateway()
setupS3()
let didFinishLaunching: Bool = AWSSignInManager.sharedInstance().interceptApplication(application, didFinishLaunchingWithOptions: launchOptions)
if (!isInitialized) {
AWSSignInManager.sharedInstance().resumeSession(completionHandler: { (result: Any?, authState: AWSIdentityManagerAuthState, error: Error?) in
print("didFinishLaunching Result: \(String(describing: result)) AuthState: \(authState) \n Error:\(String(describing: error))")
if authState == .authenticated {
// Facebook or Cognito???
AWSCognitoUserAuthHelper.getCurrentUserAttribute(name: "sub", completionHandler: { (userid) in
// we need to fetch the user
ObjectManager.instance.getUser(userid: userid, completionHandler: { (user) in
ObjectManager.instance.setCurrentUser(user: user)
})
})
}
}) // If you get an EXC_BAD_ACCESS here in iOS Simulator, then do Simulator -> "Reset Content and Settings..."
// This will clear bad auth tokens stored by other apps with the same bundle ID.
isInitialized = true
}
return didFinishLaunching
}

Answer 1

One solution I found was to cast to the different identity profile types such as the following:
let identityManager = AWSIdentityManager.default()
if let fbIdentityProfile = identityManager.identityProfile as? FacebookIdentityProfile {
print("didFinishLaunching - Facebook login")
} else if let upIdentityProfile = identityManager.identityProfile as? UserPoolsIdentityProfile {
print("didFinishLaunching - User Pools login")
}
I can model logic in my application around this. Not sure if there is a cleaner approach using the MobileHub helper classes or AWS APIs but this works.