/// <reference types="node" />
import * as https from 'https';
import * as openId from 'openid-client';
export interface IRequestInit {
    headers?: {
        append: (key: string, value: string) => void;
    } | ({
        append: (key: string, value: string) => void;
    } & Iterable<[string, string]>) | Record<string, string | string[]> | Iterable<Iterable<string>>;
    method?: string | undefined;
}
export interface ITokenSet {
    access_token: string;
    expires_at: number;
    type: string;
    refresh_token?: string;
}
export interface IAuthRetryOptions {
    retry: boolean;
    retries?: number;
    factor?: number;
    minTimeout?: number;
    maxTimeout?: number;
}
type LogMethod = (msg: string | Error, err?: Error) => void;
export interface IAuthLogger {
    error: LogMethod;
    warn: LogMethod;
    info: LogMethod;
    debug: LogMethod;
}
type ClientCertificateOptions = Partial<Pick<https.RequestOptions, 'ca' | 'cert' | 'key'>>;
export interface IAuthOptions extends ClientCertificateOptions {
    authUrl: string;
    clientId: string;
    clientSecret: string;
    expirationLimitSeconds?: number;
    httpRequestTimeout?: number;
    useCache?: boolean;
    retryOptions?: IAuthRetryOptions;
    logger?: IAuthLogger;
    loggerMessagePrefix?: string;
    tokenEndpointAuthMethod?: openId.ClientAuthMethod;
    issuerMetadataOverrides?: Partial<openId.IssuerMetadata>;
    grantType?: string;
}
export declare class TokenFactory {
    private readonly authOptions;
    private cache;
    private tokenRetrievingStatus;
    constructor(authOptions: IAuthOptions);
    protected createOpenIdClient(authOptions: IAuthOptions): Promise<openId.BaseClient>;
    private tryGetFromCache;
    private getTokenKey;
    private addToCache;
    private getTokenFromAuthWithRetries;
    private getTokenFromAuth;
    private retrieveToken;
    getToken(scopes: string, refreshToken?: string): Promise<ITokenSet>;
    protected logDebug(msg: string): void;
    protected logWarn(msg: string, err?: Error): void;
    protected logError(msg: string, err: Error): void;
    private log;
}
export declare function createTokenFactory(authOptions: IAuthOptions): TokenFactory;
export declare function httpClientFactory<TRequestInfo, TRequestInit extends IRequestInit, TResponse>(scopes: string, tokenFactory: any, fetch: (url: TRequestInfo, init?: TRequestInit) => Promise<TResponse>): {
    fetch: (input: TRequestInfo, init?: TRequestInit) => Promise<TResponse>;
};
export declare function userHttpClientFactory<TRequestInfo, TRequestInit extends IRequestInit, TResponse>(authorizationProvider: (() => Promise<string>) | string, fetch: (url: TRequestInfo, init?: TRequestInit) => Promise<TResponse>): {
    fetch: (input: TRequestInfo, init?: TRequestInit) => Promise<TResponse>;
};
export declare function doFetch<TRequestInfo, TRequestInit extends IRequestInit, TResponse>(authorization: string, fetch: (url: TRequestInfo, init?: TRequestInit) => Promise<TResponse>, input: TRequestInfo, init?: TRequestInit): Promise<TResponse>;
export {};