auth_interceptor.js

function authInterceptor($rootScope, localStorageService, $q, $timeout, $location, APP_CONFIG) {

		return {
			response : function(response) {

				if(response) {
					var freshJwt = response.headers().authorization;
					if (freshJwt) {
						//refresh local token
						localStorageService.set(APP_CONFIG.jwt_key, freshJwt);
					}

					if (typeof response.data === 'object') {
						// Redirect to page, if user was not authorized.
						if (response.data.authorization === false) {
							$rootScope.auth = {};
							localStorageService.remove(APP_CONFIG.jwt_key);
							localStorageService.remove('satellizer_token');
							$timeout(function () {
								$location.path('/logout');
							});
						}
					}
				}

				return response;
			},

			// Intercept 401s and redirect you to login
			responseError: function(response) {
				if(response.status === 401) {
					// remove any stale tokens
					$rootScope.auth = {};
					localStorageService.remove(APP_CONFIG.jwt_key);
					localStorageService.remove('satellizer_token');
					$timeout(function () {
						$location.path('/logout');
					});
					return $q.reject(response);
				} else {
					var freshJwt = response.headers().authorization;
					if (freshJwt) {
						//refresh local token
						localStorageService.set(APP_CONFIG.jwt_key, freshJwt);
					}
					return $q.reject(response);
				}
			}
		};
	}