vendor/bshaffer/oauth2-server-php/src/OAuth2/Storage/RefreshTokenInterface.php

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<?php

namespace OAuth2\Storage;

/**
 * Implement this interface to specify where the OAuth2 Server
 * should get/save refresh tokens for the "Refresh Token"
 * grant type
 *
 * @author Brent Shaffer <bshafs at gmail dot com>
 */
interface RefreshTokenInterface
{
    /**
     * Grant refresh access tokens.
     *
     * Retrieve the stored data for the given refresh token.
     *
     * Required for OAuth2::GRANT_TYPE_REFRESH_TOKEN.
     *
     * @param $refresh_token
     * Refresh token to be check with.
     *
     * @return
     * An associative array as below, and NULL if the refresh_token is
     * invalid:
     * - refresh_token: Refresh token identifier.
     * - client_id: Client identifier.
     * - user_id: User identifier.
     * - expires: Expiration unix timestamp, or 0 if the token doesn't expire.
     * - scope: (optional) Scope values in space-separated string.
     *
     * @see http://tools.ietf.org/html/rfc6749#section-6
     *
     * @ingroup oauth2_section_6
     */
    public function getRefreshToken($refresh_token);

    /**
     * Take the provided refresh token values and store them somewhere.
     *
     * This function should be the storage counterpart to getRefreshToken().
     *
     * If storage fails for some reason, we're not currently checking for
     * any sort of success/failure, so you should bail out of the script
     * and provide a descriptive fail message.
     *
     * Required for OAuth2::GRANT_TYPE_REFRESH_TOKEN.
     *
     * @param $refresh_token
     * Refresh token to be stored.
     * @param $client_id
     * Client identifier to be stored.
     * @param $user_id
     * User identifier to be stored.
     * @param $expires
     * Expiration timestamp to be stored. 0 if the token doesn't expire.
     * @param $scope
     * (optional) Scopes to be stored in space-separated string.
     *