<?php /* * Copyright 2015 Google Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ namespace Automattic\WooCommerce\GoogleListingsAndAds\Vendor\Google\Auth; /** * An interface implemented by objects that can fetch auth tokens. */ interface FetchAuthTokenInterface { /** * Fetches the auth tokens based on the current state. * * @param callable $httpHandler callback which delivers psr7 request * @return array<mixed> a hash of auth tokens */ public function fetchAuthToken(callable $httpHandler = null); /** * Obtains a key that can used to cache the results of #fetchAuthToken. * * If the value is empty, the auth token is not cached. * * @return string a key that may be used to cache the auth token. */ public function getCacheKey(); /** * Returns an associative array with the token and * expiration time. * * @return null|array<mixed> { * The last received access token. * * @type string $access_token The access token string. * @type int $expires_at The time the token expires as a UNIX timestamp. * } */ public function getLastReceivedToken(); }