How can you use AngularFire and Firebase to authenticate an admin route? - firebase

Question

I am trying to achieve role based authentication for a particular admin view using ngRoute. There is an example of authenticating with routers in the AngularFire docs, but it does not take into account a user who has an admin role.
I am using Firebase to store admin by user id:
admin {
<some-uid>: true,
<another-uid>: true
}
From AngularFire docs:
// for ngRoute
app.run(["$rootScope", "$location", function($rootScope, $location) {
$rootScope.$on("$routeChangeError", function(event, next, previous, error) {
// We can catch the error thrown when the $requireSignIn promise is rejected
// and redirect the user back to the home page
if (error === "AUTH_REQUIRED") {
$location.path("/home");
}
});
}]);
app.config(["$routeProvider", function($routeProvider) {
$routeProvider.when("/home", {
// the rest is the same for ui-router and ngRoute...
controller: "HomeCtrl",
templateUrl: "views/home.html",
resolve: {
// controller will not be loaded until $waitForSignIn resolves
// Auth refers to our $firebaseAuth wrapper in the example above
"currentAuth": ["Auth", function(Auth) {
// $waitForSignIn returns a promise so the resolve waits for it to complete
return Auth.$waitForSignIn();
}]
}
}).when("/account", {
// the rest is the same for ui-router and ngRoute...
controller: "AccountCtrl",
templateUrl: "views/account.html",
resolve: {
// controller will not be loaded until $requireSignIn resolves
// Auth refers to our $firebaseAuth wrapper in the example above
"currentAuth": ["Auth", function(Auth) {
// $requireSignIn returns a promise so the resolve waits for it to complete
// If the promise is rejected, it will throw a $stateChangeError (see above)
return Auth.$requireSignIn();
}]
}
});
}]);
app.controller("HomeCtrl", ["currentAuth", function(currentAuth) {
// currentAuth (provided by resolve) will contain the
// authenticated user or null if not signed in
}]);
app.controller("AccountCtrl", ["currentAuth", function(currentAuth) {
// currentAuth (provided by resolve) will contain the
// authenticated user or null if not signed in
}]);