Conditional Function for saving data to Firebase for Facebook and Google Users

I am trying to call a function that when triggered saves Firebase data based on the type of User that is logged in. In my case I have a Facebook User that when function is called successfully saves that data to the database. I am also trying to implement a method where the same function is called but when a Google User also saves that data to Firebase. Again, I am able to successfully save with Facebook user but am having trouble with saving data when a Google User is logged in...help and Thanks!

    var user: GIDGoogleUser!

    // user taps confirm button to send item to be saved in Firebase
    func confirmAddPlace(place: GMSPlace!, _ signIn: GIDSignIn!, didSignInFor user: GIDGoogleUser!) {

        // save place to Facebook User

        if let accessToken = FBSDKAccessToken.current() {
        guard let accessTokenString = accessToken.tokenString else { return }

        let credentials = FIRFacebookAuthProvider.credential(withAccessToken: accessTokenString)
        FIRAuth.auth()?.signIn(with: credentials, completion: { (user, error) in
            if error != nil {
                print("Something went wrong with our FB user: ", error ?? "")
                return
            } else {

                // save place to GoogleUser
                // getting an error in the if let idToken...
                if let idToken = user.authentication.idToken {
                    guard let idTokenString = idToken.tokenString else { return }

                    let credentials = FIRGoogleAuthProvider.credential(withIDToken: idToken, accessToken: accessToken)
                    FIRAuth.auth()?.signIn(with: credentials, completion: { (user, error) in
                        if let err = error {
                            print("failled to create place for user with Google", err)
                            return
                        }
                        guard let uid = user?.uid else { return }
                        print("Successfully logged into Firebase with Google", uid)
                        self.delegate?.finishLoggingIn()
                        let ref = FIRDatabase.database().reference()
                        let usersReference = ref.child("users").child(uid)
                        let Places: String = "Google_User_Places"
                        let values = ["name": user!.displayName, "email": user!.email, "Places": Places]
                        usersReference.updateChildValues(values, withCompletionBlock: { (err, ref) in
                            if err != nil {
                                print(err!)
                                return
                            }
                            print("place has been saved to Firebase database")
                        })
                    })
                }

            }

            // create place in Firebase
            let ref = FIRDatabase.database().reference().child("places")
            let childRef = ref.childByAutoId()
            let toId = user?.uid
//            let timeStamp: NSNumber = Int(NSDate().timeIntervalSinceNow)
            let values = ["place": self.placeNameLabel.text!, "toId": toId!]
            childRef.updateChildValues(values)
        })
        animateOut()
        }
    }