import { Http } from '@angular/http';
import { Observable, ConnectableObservable } from 'rxjs';
import { Broadcaster, Logger } from 'ngo-base';
import { User } from './user';
/**
 *  Provides user and user list methods to retrieve current or user list details
 *
 *  The UserService should be injected at the root of the application to ensure it is a singleton
 *  getUser and getAllUsers return observables that can be subscribed to for information
 */
export declare class UserService {
    private http;
    private logger;
    /**
     * The currently logged in user
     */
    loggedInUser: ConnectableObservable<User>;
    private headers;
    private userUrl;
    private usersUrl;
    private searchUrl;
    constructor(http: Http, logger: Logger, broadcaster: Broadcaster, apiUrl: string);
    /**
     * Get the User object for a given user id, or null if no user is found
     * @param userId the userId to search for
     */
    getUserByUserId(userId: string): Observable<User>;
    /**
     * Get the User object for a given username, or null if no user is found
     * @param username the username to search for
     */
    getUserByUsername(username: string): Observable<User>;
    /**
     * Get users by a search string
     */
    getUsersBySearchString(search: string): Observable<User[]>;
    /**
     *
     * Filter users by username
     *
     * @returns Observable<User[]>
     */
    filterUsersByUsername(username: string): Observable<User[]>;
}