import IGirafeContext from '../context/icontext.js';
import AbstractConnectManager from './abstractconnectmanager.js';
import GMFManager from './gmfmanager.js';
/**
 * For diverse reasons, this could NOT be done using the oAuth2 mechanisms of GMF:
 * 1. There is no .well-know discovery endpoint
 * 2. The token endpoint needs a client_secret, and for security reasons it has to be called from the backend itself.
 *    There is not custom backend for GeoGirafe and we cannot do this.
 * 3. The redirect url is limited to exact matches, and we cannot pass the state of the application in the redirect_uri
 * 4. Using GMF oAuth2 routes for authentification does not authenticate the user to the backend.
 *    It just tells the client that you have a correct user in GMF.
 *    But you do not get any valid cookie for the GMF Backend.
 *
 * For all those reasons, we cannot use the geomapfish oAuth process
 * Instead we delegate the login to the backend, which is a Backend-For-Frontend (BFF) pattern:
 * the frontend only ever holds a session cookie, and never needs any OIDC-specific configuration
 * (no clientId, no issuer url) -- the identity provider is only known to the backend.
 *
 * Two `gmfauth.loginMode` flavors are supported, both delegating entirely to the backend:
 * - 'form' (default): the backend's login.html page, a standard GMF username/password login form.
 *   There is no oAuth process at all in this mode.
 * - 'oidc': the backend's oidc/login route (c2cgeoportal_geoportal's OpenID Connect integration).
 *   The browser is redirected to oidc/login, which itself redirects to the identity provider;
 *   after the user authenticates there, the backend's oidc/callback exchanges the code for tokens
 *   (server-side, using the client_secret) and redirects back here with the auth_tkt session cookie
 *   set. This is exactly how ngeo authenticates against a GMF backend with
 *   `authentication.openid_connect` enabled: the browser never talks to the identity provider
 *   directly, and gg-viewer needs no more configuration for this mode than for 'form'.
 *
 * Once the redirect comes back (either flavor), everything below is identical: we only ever
 * trust the session cookie and poll the backend's loginuser endpoint to know who is logged in.
 *
 * NOTE: If the geogirafe client is not running on the same domain as the GMF backend,
 * the GMF Backend needs to be configured with :
 * - CORS with credentials for specific domain (this can be done for example with an lua script at the in the haproxy configuration)
 * - The frontend domain has to be allowed as referer in the vars.yaml file.
 * - The variable AUTHTKT_SAMESITE has to be set to None, to allow authentication cookies to be sent to the backend from another domain
 * These constraints apply identically to both loginMode flavors.
 */
export default class GMFConnectManager extends AbstractConnectManager {
    private readonly gmfManager;
    constructor(context: IGirafeContext, gmfManager: GMFManager);
    private get authConfig();
    private isAuthentified;
    initialize(): Promise<void>;
    login(): Promise<void>;
    silentLogin(): Promise<void>;
    logout(): Promise<void>;
    private redirectToIssuerLogin;
    private handleLoggedInToIssuer;
    private refreshToken;
}