.config(['$httpProvider', function ($httpProvider)
    {
        //interceptor for requests and error responses
        $httpProvider.interceptors.push(['$rootScope','$q', '$location', '$localStorage','Auth', function ($rootScope,$q, $location, $localStorage,Auth) {
            return {
                //injecting JWT token into header for requests
                'request': function (config)
                {
                    $rootScope.stateLoading = true;
                    config.headers = config.headers || {};
                    if ($localStorage.token) {
                        config.headers.Authorization = 'Bearer ' + $localStorage.token;
                    }
                    return config;
                },
                //handling not authorized requests and sending them to the home page.
                'responseError': function (response)
                {

                    $rootScope.stateLoading = false;
                    if (response.status === 401 || response.status === 403 || response.status === 400)
                    {
                        $location.path('/home');
                    }
                    if(response.status === 498)
                    {
                        Auth.refresh($localStorage.token).then(function(response)
                        {
                            $localStorage.token = response.token;
                        });
                    }
                    return $q.reject(response);

                },
                'response':function(response)
                {
                    $rootScope.stateLoading = false;
                    return response;
                }
            };
        }]);
    }])
    .config(['ngToastProvider', function(ngToastProvider)
    {
    ngToastProvider.configure({
        animation: 'slide',
        timeout:'5000'
    });
}]);