/**
 * @license
 * Copyright Mauricio Gemelli Vigolo All Rights Reserved.
 *
 * Use of this source code is governed by a MIT-style license that can be
 * found in the LICENSE file at https://github.com/mauriciovigolo/keycloak-angular/blob/main/LICENSE.md
 */
import Keycloak, { KeycloakError } from 'keycloak-js';
import { Signal, InjectionToken } from '@angular/core';
/**
 * Keycloak event types, as described at the keycloak-js documentation:
 * https://www.keycloak.org/docs/latest/securing_apps/index.html#callback-events
 */
export declare enum KeycloakEventType {
    /**
     * Keycloak Angular is not initialized yet. This is the initial state applied to the Keycloak Event Signal.
     * Note: This event is only emitted in Keycloak Angular, it is not part of the keycloak-js.
     */
    KeycloakAngularNotInitialized = "KeycloakAngularNotInitialized",
    /**
     * Keycloak Angular is in the process of initializing the providers and Keycloak Instance.
     * Note: This event is only emitted in Keycloak Angular, it is not part of the keycloak-js.
     */
    KeycloakAngularInit = "KeycloakAngularInit",
    /**
     * Triggered if there is an error during authentication.
     */
    AuthError = "AuthError",
    /**
     * Triggered when the user logs out. This event will only be triggered
     * if the session status iframe is enabled or in Cordova mode.
     */
    AuthLogout = "AuthLogout",
    /**
     * Triggered if an error occurs while attempting to refresh the token.
     */
    AuthRefreshError = "AuthRefreshError",
    /**
     * Triggered when the token is successfully refreshed.
     */
    AuthRefreshSuccess = "AuthRefreshSuccess",
    /**
     * Triggered when a user is successfully authenticated.
     */
    AuthSuccess = "AuthSuccess",
    /**
     * Triggered when the Keycloak adapter has completed initialization.
     */
    Ready = "Ready",
    /**
     * Triggered when the access token expires. Depending on the flow, you may
     * need to use `updateToken` to refresh the token or redirect the user
     * to the login screen.
     */
    TokenExpired = "TokenExpired",
    /**
     * Triggered when an authentication action is requested by the application.
     */
    ActionUpdate = "ActionUpdate"
}
/**
 * Arguments for the `Ready` event, representing the authentication state.
 */
export type ReadyArgs = boolean;
/**
 * Arguments for the `ActionUpdate` event, providing information about the status
 * and optional details about the action.
 */
export type ActionUpdateArgs = {
    /**
     * Status of the action, indicating whether it was successful, encountered an error,
     * or was cancelled.
     */
    status: 'success' | 'error' | 'cancelled';
    /**
     * Optional name or identifier of the action performed.
     */
    action?: string;
};
/**
 * Arguments for the `AuthError` event, providing detailed error information.
 */
export type AuthErrorArgs = KeycloakError;
type EventArgs = ReadyArgs | ActionUpdateArgs | AuthErrorArgs;
/**
 * Helper function to typecast unknown arguments into a specific Keycloak event type.
 *
 * @template T - The expected argument type.
 * @param args - The arguments to be cast.
 * @returns The arguments typed as `T`.
 */
export declare const typeEventArgs: <T extends EventArgs>(args: unknown) => T;
/**
 * Structure of a Keycloak event, including its type and optional arguments.
 */
export interface KeycloakEvent {
    /**
     * Event type as described at {@link KeycloakEventType}.
     */
    type: KeycloakEventType;
    /**
     * Arguments from the keycloak-js event function.
     */
    args?: unknown;
}
/**
 * Creates a signal to manage Keycloak events, initializing the signal with
 * appropriate default values or values from a given Keycloak instance.
 *
 * @param keycloak - An instance of the Keycloak client.
 * @returns A `Signal` that tracks the current Keycloak event state.
 */
export declare const createKeycloakSignal: (keycloak?: Keycloak) => import("@angular/core").WritableSignal<KeycloakEvent>;
/**
 * Injection token for the Keycloak events signal, used for dependency injection.
 */
export declare const KEYCLOAK_EVENT_SIGNAL: InjectionToken<Signal<KeycloakEvent>>;
export {};