Angular variable not defined inside my service

Question

I have a problem with my angular code and I can't figure out where's it's from.

I want to return the result json of my api call, I DONT want a promise or anything I want the json result of the $http service.

When i'm outside of the $http my variable result is set to 'undefined' but inside the $http service it's set to the result of the json.

angular.module('app')
.factory("Content", function ContentFactory($http) {
    return {
        all: function () {
            var result;
            $http.get('wp-json/acf/post/2').success(function(res){
                result = res.acf;
                console.log(result); // 'Object'
            });
            console.log(result); // 'undefined'
            return result;
        },
    };
});