(function() {
    'use strict';

    angular.module('shared')

        .provider('$advice', [function() {
            var middlewares = {};
            var provider = {
                register: registerMiddleware,
                $get: ['$injector', factoryFn]
            };

            return provider;

            function registerMiddleware(name, factoryFn) {
                middlewares[name] = factoryFn;
                return provider;
            }

            function factoryFn($injector) {
                return function(name, locals) {
                    var middlewareFactory = angular.isString(name) ? middlewares[name] : name;
                    return $injector.invoke(middlewareFactory, null, locals);
                }
            }
        }])

})();