import { EventCallback } from '../nanoevents.js';
import Base from '../api/base.js';
import { IEBayApiRequest } from '../request.js';
import { AppConfig, Scope } from '../types/index.js';
export type Token = {
    access_token: string;
    expires_in: number;
    token_type: string;
};
export type ClientToken = Token;
export type AuthToken = Token & {
    refresh_token: string;
    refresh_token_expires_in: number;
};
/**
 * https://developer.ebay.com/api-docs/static/oauth-tokens.html
 *
 * Client credentials grant flow mints a new Application access token that you can use to access the resources owned by the application.
 * Authorization code grant flow mints a new User access token that you can use to access the resources owned by the user.
 */
export default class OAuth2 extends Base {
    static readonly IDENTITY_ENDPOINT: Record<string, string>;
    static readonly AUTHORIZE_ENDPOINT: Record<string, string>;
    static readonly defaultScopes: Scope;
    private readonly emitter;
    private scope;
    private _clientToken?;
    private _authToken?;
    constructor(config: AppConfig, req: IEBayApiRequest);
    on(event: string, callback: EventCallback): () => void;
    static generateAuthUrl(sandbox: boolean, appId: string, ruName: string, scope: string[], state?: string): string;
    get identityEndpoint(): string;
    /**
     * Return the access token.
     * First return user access token, if not set Application Access Token.
     */
    getAccessToken(): Promise<string>;
    getUserAccessToken(): string | null;
    getApplicationAccessToken(): Promise<string>;
    setClientToken(clientToken?: Token): void;
    setScope(scope: Scope): void;
    getScope(): string[];
    /**
     * Client credentials grant flow.
     */
    mintApplicationAccessToken(): Promise<ClientToken>;
    /**
     * Client credentials grant flow.
     */
    obtainApplicationAccessToken(): Promise<ClientToken>;
    /**
     * Generates URL for consent page landing.
     *
     * @param ruName RuName
     * @param scope the scopes
     * @param state state parameter returned in the redirect URL
     */
    generateAuthUrl(ruName?: string, scope?: string[], state?: string): string;
    /**
     * Authorization code grant flow.
     *
     * Mint the user access token for the given code.
     *
     * @param code the code
     * @param ruName the redirectUri
     */
    mintUserAccessToken(code: string, ruName?: string | undefined): Promise<any>;
    /**
     * Authorization code grant flow.
     *
     * Mint the access token for the given code.
     *
     * @param code the code
     * @param ruName the redirectUri
     */
    getToken(code: string, ruName?: string | undefined): Promise<any>;
    /**
     * Authorization code grant flow.
     */
    refreshUserAccessToken(): Promise<AuthToken>;
    /**
     * Gets and sets the user access token for the given code.
     *
     * Authorization code grant flow.
     *
     * @param code the code
     */
    obtainToken(code: string): Promise<AuthToken>;
    getCredentials(): AuthToken | ClientToken | null;
    setCredentials(authToken: AuthToken | string): void;
    /**
     * Refresh the user access token if set or application access token
     */
    refreshToken(): Promise<Token>;
}