import { AngularDataContext } from '@themost/angular';
import { ConfigurationService } from '../../shared/services/configuration.service';
import { ActivatedRoute } from '@angular/router';
import { ActivatedUser } from './activated-user.service';
export interface AuthCallbackResponse {
    access_token: string;
    expires_in: number;
    refresh_token?: string;
    refresh_expires_in?: number;
    token_type: string;
    scope: string;
}
export interface OnRefreshToken {
    refresh(): Promise<AuthCallbackResponse | void>;
}
export declare class AuthenticationService {
    protected configuration: ConfigurationService;
    protected context: AngularDataContext;
    protected activatedRoute: ActivatedRoute;
    protected activatedUser: ActivatedUser;
    constructor(configuration: ConfigurationService, context: AngularDataContext, activatedRoute: ActivatedRoute, activatedUser: ActivatedUser);
    /**
     * Generates an OAuth2 state param based on the given string.
     * @param {string} value
     * @returns {string}
     */
    protected generateState(value: string): string;
    /**
     * Gets an OAuth2 code_verifier
     * @returns {string}
     */
    protected getCodeVerifier(): string;
    /**
     * Redirects user to OAuth2 server authorization URL. This operation initializes an implicit authorization flow.
     */
    authorize(): void;
    protected preCallback(queryParams: any): void;
    /**
     * Handles OAuth2 server callback of an implicit authorization flow.
     * @param {*} queryParams
     * @returns {Promise<*>} - Returns an object which represents the authorized user.
     */
    callback(queryParams: any): Promise<any>;
    /**
     * Returns the logout URL.
     * @returns {string}
     */
    protected getLogoutURL(): string;
    /**
     * Performs user logout.
     * @returns {Promise<boolean>} - Returns true if user has been logged out succesfully. Otherwise returns false.
     */
    logout(): Promise<boolean>;
}