TypeError: Cannot read property ‘uid’ of undefined ionic-v1 - facebook

Question

I have the following question as to how I could be solving this problem with the property uid with authentication via facebook / firebase. This displays the error message in the command prompt according to the image.
Print Error Prompt
Services
'use strict';
app.factory('Auth', function ($firebaseAuth, $firebaseObject, $firebaseArray, $state, $http, $q, $cordovaOauth) {
var ref = firebase.database().ref();
var auth = $firebaseAuth();
var Auth = {
createProfile: function(uid, profile) {
return ref.child('profiles').child(uid).set(profile);
},
getProfile: function(uid) {
return $firebaseObject(ref.child('profiles').child(uid));
},
login: function() {
var provider = new firebase.auth.FacebookAuthProvider();
provider.addScope('public_profile, email, user_location, user_birthday, user_photos, user_about_me');
// return auth.$signInWithPopup(provider)
// .then(function(result) {
$cordovaOauth.facebook("1455510817798096", ["public_profile", "email", "user_location", "user_birthday", "user_photos", "user_about_me"])
.then(function (result) {
//var accessToken = result.credential.accessToken;
var user = Auth.getProfile(result.user.uid).$loaded();
//ver ideia do tairone pra ver o que acontece
// var user = Auth.getProfile(result.user).$loaded();
user.then(function(profile) {
if (profile.name == undefined) {
var genderPromise = $http.get('https://graph.facebook.com/me?fields=gender&access_token=' + accessToken);
var birthdayPromise = $http.get('https://graph.facebook.com/me?fields=birthday&access_token=' + accessToken);
var locationPromise = $http.get('https://graph.facebook.com/me?fields=location&access_token=' + accessToken);
var bioPromise = $http.get('https://graph.facebook.com/me?fields=about&access_token=' + accessToken);
var imagesPromise = $http.get('https://graph.facebook.com/me/photos/uploaded?fields=source&access_token=' + accessToken);
var promises = [genderPromise, birthdayPromise, locationPromise, bioPromise, imagesPromise];
$q.all(promises).then(function(data) {
var info = result.user.providerData[0];
var profile = {
name: info.displayName,
email: info.email,
avatar: info.photoURL,
gender: data[0].data.gender ? data[0].data.gender : "",
birthday: data[1].data.birthday ? data[1].data.birthday : "",
age: data[1].data.birthday ? Auth.getAge(data[1].data.birthday) : "",
location: data[2].data.location ? data[2].data.location.name : "",
bio: data[3].data.about ? data[3].data.about : "",
images: data[4].data.data
}
Auth.createProfile(result.user.uid, profile);
//mudar a profile tambem mudando ideia tairone
//Auth.createProfile(result.user, profile);
});
}
});
});
},
logout: function() {
return auth.$signOut();
},
getAbout: function(access_token) {
return $http.get('https://graph.facebook.com/me?fields=bio&access_token=' + access_token);
},
getAge: function(birthday) {
return new Date().getFullYear() - new Date(birthday).getFullYear();
},
requireAuth: function() {
return auth.$requireSignIn();
},
getProfilesByAge: function(age) {
return $firebaseArray(ref.child('profiles').orderByChild('age').startAt(18).endAt(age));
},
getProfiles: function(){
return $firebaseArray(ref.child('profiles'));
}
};
auth.$onAuthStateChanged(function(authData) {
if(authData) {
console.log('Este usuario ja se encontra logado!');
} else {
$state.go('login');
console.log('Este usuario ainda nao se encontra logado no aplicativo da cleo.');
}
});
return Auth;
});
Controller
'use strict';
app.controller('AuthCtrl', function(Auth, $state) {
var auth = this;
auth.login = function() {
console.log('Usuario clicou no botao para realizar login!');
// return Auth.login().then(function(user) {
return Auth.login(function(user) {
$state.go('app.home');
});
};
auth.logout = function() {
Auth.logout();
};
});