import { KnoraApiConnection } from '@dasch-swiss/dsp-js';
import { Observable } from 'rxjs';
/**
 * information about the current user
 */
interface CurrentUser {
    name: string;
    jwt?: string;
    lang: string;
    sysAdmin: boolean;
    projectAdmin: string[];
}
/**
 * Session with id (= login timestamp) and inforamtion about logged-in user
 */
export interface Session {
    id: number;
    user: CurrentUser;
}
export declare class SessionService {
    private _dspApiConnection;
    /**
     * max session time in milliseconds
     * default value (24h): 86400000
     *
     */
    readonly MAX_SESSION_TIME: number;
    constructor(_dspApiConnection: KnoraApiConnection);
    /**
     * get session information from localstorage
     */
    getSession(): Session | null;
    /**
     * set session by using the json web token (jwt) and the user object;
     * it will be used in the login process
     *
     * @param jwt Json Web Token
     * @param identifier  email address or username
     * @param identifierType 'email' or 'username'
     */
    setSession(jwt: string, identifier: string, identifierType: 'email' | 'username'): Observable<void>;
    /**
     * Validate intern session and check knora api credentials if necessary.
     * If a json web token exists, it doesn't mean that the knora api credentials are still valid.
     *
     */
    isSessionValid(): Observable<boolean>;
    /**
     * Destroy session by removing the session from local storage
     *
     */
    destroySession(): void;
    /**
     * Returns a timestamp represented in seconds
     *
     */
    private _setTimestamp;
    /**
     * Store session in local storage
     * @param response response from getUser method call
     * @param jwt JSON web token string
     */
    private _storeSessionInLocalStorage;
    /**
     * Updates the id of the current session in the local storage
     * @param credentials response from getCredentials method call
     * @param session the current session
     * @param timestamp timestamp in form of a number
     */
    private _updateSessionId;
}
export {};