Injecting Facebook JS SDK into AngularJS Controllers - dependency-injection

Question

I'm trying to create a facebook service for Angular so I can more easily test code that needs to use the Facebook JS SDK and Graph API for stuff.
Here's what I have so far:
app.factory('facebook', function() {
return FB;
});
window.fbAsyncInit = function () {
FB.init({
appId: 'SOME_APP_ID_HERE', // App ID
status: true, // check login status
cookie: true, // enable cookies to allow the server to access the session
xfbml: true, // parse XFBML
oauth: true
});
};
// Load the SDK Asynchronously
(function (d) {
var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0];
if (d.getElementById(id)) { return; }
js = d.createElement('script'); js.id = id; js.async = true;
js.src = "//connect.facebook.net/en_US/all.js";
ref.parentNode.insertBefore(js, ref);
})(document);
Now, I know that the actual Facebook SDK part is working... but in my controller the reference is always null.
in my controller I just have something like this:
function FooCtrl($scope, facebook) {
facebook.getLoginStatus(function(response) {
if (response.status === 'connected') {
var uid = response.authResponse.userID;
var accessToken = response.authResponse.accessToken;
// do something
} else if (response.status === 'not_authorized') {
// the user is logged in to Facebook,
// but has not authenticated your app
} else {
// the user isn't logged in to Facebook.
}
});
}
Angular then gripes that it can't find a facebookProvider. Any ideas on how I can accomplish this?

Answer 1

Enclose your factory function with array brackets like below
app.factory('facebook', [function() {
return FB;
}]);
API docs are not clear enough. Point of having array brackets is that you can specify dependencies. It will be injected on creation of your service with AUTO.$inject. But since you don't have dependencies it will skip that task :)
Anyway, if you need dependencies you can request them like this
app.factory('facebook', ["$log", function($someCrazyLoggerService){
$someCrazyLoggerService.log("I'm Auto Injected crazy Logger");
}]);

Answer 2

you should take a look at this Facebook module I wrote.
First use the FacebookProvider on your app config call, something as FacebookProvider.init('yourFacebookAppIdHere');, you could also configure other settings too, and then on your controllers use the Facebook service and register to events and call methods asyncrhonously ;)
https://github.com/ciul/angularjs-facebook