import { AxiosInstance } from 'axios';
import { ExchangeRefreshTokenResult } from './oidc-functions.js';
/**
 * Callback for the refresh token.
 */
export type RefreshTokenCallback = (refreshToken: ExchangeRefreshTokenResult) => Promise<void>;
/**
 * Options for the RefreshTokenManager.
 */
export interface RefreshTokenManagerProps {
    /**
     * The client ID.
     */
    readonly clientId: string;
    /**
     * The refresh token.
     */
    readonly refreshToken: string;
    /**
     * The date the access token expires.
     */
    readonly expiration: number;
    /**
     * The token endpoint.
     */
    readonly tokenEndpoint: string;
    /**
     * The number of seconds before the access token expires to refresh the access token. Default is 60 seconds.
     * @default 60
     */
    readonly refreshBufferSeconds?: number;
    /**
     * The number of seconds to subtract from the token expiration time when calculating if the token is expired.
     * Default is 45 seconds. Recommended to be less than the refreshBufferSeconds.
     *
     * @default 45
     */
    readonly expirationBufferSeconds?: number;
    /**
     * Disable the background refresh of the access token. Default is false.
     * @default false
     */
    readonly disableBackgroundRefresh?: boolean;
    /**
     * Callback for the refresh token.
     */
    readonly callback?: RefreshTokenCallback | RefreshTokenCallback[];
    /**
     * The client to use for making requests. If not specified, a new client will be created.
     */
    readonly client?: AxiosInstance;
}
/**
 * Manages refreshing an access token using a refresh token.
 */
export declare class RefreshTokenManager {
    protected clientId: string;
    protected refreshToken: string;
    protected tokenEndpoint: string;
    protected refreshBufferSeconds: number;
    protected disableBackgroundRefresh: boolean;
    protected expirationBufferSeconds: number;
    protected client: AxiosInstance;
    protected expiration: number;
    protected intervalId?: ReturnType<typeof setTimeout>;
    protected callbacks: RefreshTokenCallback[];
    constructor(props: RefreshTokenManagerProps);
    /**
     * Adds a callback for the refresh token.
     *
     * @param callback the callback to add
     */
    callback(callback: RefreshTokenCallback): void;
    /**
     * Stops the background refresh of the access and refresh token.
     */
    stop(): void;
    /**
     * Starts the background refresh of the access and refresh token. This is called automatically unless disableBackgroundRefresh is set to true.
     */
    start(): void;
    protected executeCallback(callback: RefreshTokenCallback, response: ExchangeRefreshTokenResult): Promise<void>;
    protected executeCallbacks(response: ExchangeRefreshTokenResult): Promise<void>;
    /**
     * Refreshes the access and refresh token. This is called automatically unless disableBackgroundRefresh is set to true.
     * Be aware this function doesn't schedule the next refresh until all callbacks return.
     */
    refresh(): Promise<ExchangeRefreshTokenResult>;
    /**
     * Retrieves the current refresh token and expiration.
     */
    getRefreshToken(): string;
    /**
     * Closes the manager instance by stopping the background refresh and clearing the refresh token.
     */
    close(): void;
}
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