import { HttpClient } from '@angular/common/http';
import { Observable } from 'rxjs';
import { Router } from '@angular/router';
export interface User {
    id: string;
    email: string;
    profile: {
        firstName: string;
        lastName: string;
        avatar?: string;
    };
    role: 'admin' | 'user' | 'guest';
    preferences?: {
        theme: 'light' | 'dark';
        notifications: boolean;
    };
}
export interface PaginatedResponse<T> {
    data: T[];
    total: number;
    page: number;
    pageSize: number;
}
export declare class UserService {
    private http;
    private baseUrl?;
    private router?;
    private readonly apiUrl;
    private usersSubject;
    users$: any;
    private selectedUsersSubject;
    selectedUsers$: any;
    constructor(http: HttpClient, baseUrl?: string | undefined, router?: Router);
    /**
     * Fetch all users with optional filtering
     */
    getUsers(params?: {
        role?: User['role'];
        search?: string;
        page?: number;
        pageSize?: number;
    }): Observable<PaginatedResponse<User>>;
    /**
     * Get a single user by ID
     */
    getUserById(id: string): Observable<User>;
    /**
     * Create a new user
     */
    createUser(userData: Omit<User, 'id'>): Observable<User>;
    /**
     * Update an existing user
     */
    updateUser(id: string, updates: Partial<User>): Observable<User>;
    /**
     * Delete a user
     */
    deleteUser(id: string): Observable<void>;
    /**
     * Search users with debouncing
     */
    searchUsers(query: string): Observable<User[]>;
    /**
     * Toggle user selection
     */
    toggleUserSelection(userId: string): void;
    /**
     * Get filtered and paginated users stream
     */
    getFilteredUsers(filters: {
        role?: User['role'];
        search?: string;
        page?: number;
        pageSize?: number;
    }): Observable<PaginatedResponse<User>>;
    /**
     * Load initial users
     */
    private loadUsers;
}
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