import { CesiumPlusClientOptions, CesiumPlusNodeSummary, CesiumPlusProfile, CesiumPlusProfileData, CesiumPlusSearchHit, SearchOptions, SignFunction } from './types';
/**
 * Default CesiumPlus pod endpoint
 */
export declare const DEFAULT_CESIUM_PLUS_ENDPOINT = "https://g1.data.e-is.pro";
/**
 * CesiumPlusClient handles REST API operations for Cesium+ pods
 * Manages user profiles and avatars using the legacy CesiumPlus (v1) API
 *
 * This client uses base58 encoded pubkeys (not SS58 addresses) for API calls
 */
export declare class CesiumPlusClient {
    private endpoint;
    private timeout;
    private cacheEnabled;
    private cacheManager;
    /**
     * Create a new CesiumPlusClient
     * @param options - Client configuration options
     */
    constructor(options?: CesiumPlusClientOptions);
    /**
     * Get current endpoint URL
     */
    getEndpoint(): string;
    /**
     * Set endpoint URL
     */
    setEndpoint(endpoint: string): void;
    /**
     * Get profile by SS58 address
     * Automatically converts SS58 address to base58 pubkey for API call
     */
    getProfile(address: string): Promise<CesiumPlusProfile | null>;
    /**
     * Get profile by base58 pubkey (for direct calls)
     */
    getProfileByPubkey(pubkey: string): Promise<CesiumPlusProfile | null>;
    /**
     * Get full profile with avatar content by SS58 address
     */
    getFullProfile(address: string): Promise<CesiumPlusProfile | null>;
    /**
     * Save (create or update) a profile
     * @param address - SS58 address of the profile owner
     * @param profileData - Profile data to save
     * @param signFunction - Function to sign the hash with the user's keypair
     * @returns true if successful
     */
    saveProfile(address: string, profileData: CesiumPlusProfileData, signFunction: SignFunction): Promise<boolean>;
    /**
     * Delete a profile
     * @param address - SS58 address of the profile owner
     * @param signFunction - Function to sign the hash with the user's keypair
     * @returns true if successful
     */
    deleteProfile(address: string, signFunction: SignFunction): Promise<boolean>;
    /**
     * Search profiles by text
     */
    searchProfiles(searchText: string, options?: SearchOptions): Promise<CesiumPlusSearchHit[]>;
    /**
     * Search profiles by pubkeys (batch lookup)
     */
    searchProfilesByPubkeys(pubkeys: string[], limit?: number): Promise<CesiumPlusSearchHit[]>;
    /**
     * Pre-check which addresses have profiles (batch operation)
     * This reduces 404 errors by caching non-existent profiles
     */
    preloadProfilesExistence(addresses: string[]): Promise<void>;
    /**
     * Get avatar as base64 data URL by SS58 address
     * Returns a data URL string (e.g., "data:image/png;base64,...")
     */
    getAvatar(address: string): Promise<string | null>;
    /**
     * Check if CesiumPlus pod is alive and valid
     */
    isAlive(): Promise<boolean>;
    /**
     * Get node summary information
     */
    getNodeSummary(): Promise<CesiumPlusNodeSummary | null>;
    /**
     * Clear all caches
     */
    clearCache(): void;
    /**
     * Clear cache for a specific address
     */
    clearCacheFor(address: string): void;
    /**
     * Clean up expired cache entries
     */
    cleanupCache(): void;
    /**
     * Convert SS58 address to base58 pubkey
     */
    addressToPubkey(address: string): string;
    /**
     * Fetch with timeout support
     */
    private fetchWithTimeout;
    /**
     * Check if error is a 404 Not Found
     */
    private isNotFoundError;
}