A walkthrough of AngularJS service/factory/provider injenction into a module.config object using deferred promise

module.service.md

var app = angular.module('app',['ui.router']);

app.service('api',function($http){
    var user,autherror, apihost, requestpath;
    return {
        authorize:function(){
            var deferred = $q.defer();

            deferred.promise = $http.get(apihost+'/'+requestpath) //$http returns a promise object
                .success(function(data){
                    user = data;
                })
                .error(function(data){
                     autherror = data;
                });

               return deferred.promise; //chains the defer into the $http promise and is returned to the calling context
         }

 }

app.config(function($urlRouterProvider, $stateProvider){

    $urlRouterProvider.when('/login/',login($match, apiServiceService));
    $urlRouterProvider.otherwise('/');

});

var function handler(match, api){
   api.authorize(match).then(function(){
   
 });

}