/**
 * TotalReclaw HTTP Client
 *
 * Handles communication with the TotalReclaw server over HTTP using Protobuf.
 */
import { TotalReclawConfig, EncryptedFact, EncryptedSearchResult } from '../types';
/**
 * HTTP Client for TotalReclaw Server
 */
export declare class TotalReclawClient {
    private serverUrl;
    private timeout;
    private serializer;
    private initialized;
    /**
     * Create a new TotalReclaw client
     *
     * @param config - Client configuration
     */
    constructor(config: TotalReclawConfig);
    /**
     * Initialize the client (must be called before making requests)
     */
    init(): Promise<void>;
    /**
     * Ensure client is initialized
     */
    private ensureInitialized;
    /**
     * Make an HTTP request
     */
    private request;
    /**
     * Generate a UUID v7 (time-sorted UUID)
     *
     * @returns UUID v7 string
     */
    generateUUIDv7(): string;
    /**
     * Check server health
     */
    healthCheck(): Promise<{
        status: string;
        version: string;
        database: string;
    }>;
    /**
     * Register a new user
     *
     * @param authKeyHash - Hashed auth key (from HKDF)
     * @param salt - Salt used for key derivation
     * @returns User ID (UUID v7)
     */
    register(authKeyHash: Buffer, salt: Buffer): Promise<string>;
    /**
     * Store an encrypted fact
     *
     * @param userId - User ID
     * @param authKey - Auth key for HMAC
     * @param fact - Encrypted fact to store
     */
    store(userId: string, authKey: Buffer, fact: EncryptedFact): Promise<number>;
    /**
     * Search for memories using trapdoors
     *
     * @param userId - User ID
     * @param authKey - Auth key for HMAC
     * @param trapdoors - Blind index trapdoors from query
     * @param maxCandidates - Maximum candidates to retrieve
     * @returns Encrypted search results
     */
    search(userId: string, authKey: Buffer, trapdoors: string[], maxCandidates?: number): Promise<EncryptedSearchResult[]>;
    /**
     * Delete a fact (if supported by server)
     *
     * @param userId - User ID
     * @param authKey - Auth key for HMAC
     * @param factId - Fact ID to delete
     */
    delete(userId: string, authKey: Buffer, factId: string): Promise<void>;
    /**
     * Get the server URL
     */
    getServerUrl(): string;
}
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