import type { StoredConsent, ConsentConfig, ConsentStorage, KVStorageOptions } from "./types";
/**
 * Internal options for fetchWithRetry
 */
interface RetryOptions {
    maxRetries: number;
    onRateLimited?: (retryAfter: number | null, attempt: number) => void;
}
/**
 * Get cookie value by name
 */
export declare function getCookie(name: string): string | null;
/**
 * Set cookie with options
 */
export declare function setCookie(name: string, value: string, options?: {
    expiry?: number;
    domain?: string;
    path?: string;
    sameSite?: "Strict" | "Lax" | "None";
    secure?: boolean;
}): void;
/**
 * Delete cookie
 */
export declare function deleteCookie(name: string, path?: string, domain?: string): void;
/**
 * Get stored consent from cookie
 */
export declare function getStoredConsent(config?: Partial<ConsentConfig>): StoredConsent | null;
/**
 * Store consent in cookie
 */
export declare function storeConsent(consent: Omit<StoredConsent, "timestamp" | "version">, config?: Partial<ConsentConfig>): void;
/**
 * Clear stored consent
 */
export declare function clearConsent(config?: Partial<ConsentConfig>): void;
/**
 * Get consent UID from cookie (used for KV re-identification)
 */
export declare function getConsentUid(): string | null;
/**
 * Set consent UID cookie for re-identification
 */
export declare function setConsentUid(uid: string, config?: Partial<ConsentConfig>): void;
/**
 * Clear consent UID cookie
 */
export declare function clearConsentUid(config?: Partial<ConsentConfig>): void;
/**
 * Fetch consent from remote KV storage
 *
 * @param storageUrl - Base URL of the KV storage API
 * @param uid - User ID to fetch consent for
 * @param version - Expected consent version (returns null if mismatch)
 * @param retryOptions - Optional retry configuration for rate limiting
 */
export declare function fetchRemoteConsent(storageUrl: string, uid: string, version: string, retryOptions?: RetryOptions): Promise<StoredConsent | null>;
/**
 * Push consent to remote KV storage. Returns the user ID (generated by worker if not provided).
 *
 * @param storageUrl - Base URL of the KV storage API
 * @param uid - User ID (null for new users - worker will generate)
 * @param consent - Consent data to store
 * @param retryOptions - Optional retry configuration for rate limiting
 */
export declare function pushRemoteConsent(storageUrl: string, uid: string | null, consent: StoredConsent, retryOptions?: RetryOptions): Promise<string | null>;
/**
 * Create a ConsentStorage backed by a Cloudflare KV Worker
 * (vue-privacy-worker compatible API).
 *
 * Supports automatic retry with exponential backoff on 429 rate limit responses.
 *
 * @param url - Base URL of the KV storage API (e.g., '/api/consent')
 * @param options - Optional configuration for rate limiting behavior
 *
 * @example
 * ```ts
 * import { createKVStorage } from '@structured-world/vue-privacy';
 *
 * // Basic usage
 * const manager = createConsentManager({
 *   gaId: 'G-XXXXXXXXXX',
 *   storage: createKVStorage('/api/consent'),
 * });
 *
 * // With rate limit callback
 * const storage = createKVStorage('/api/consent', {
 *   maxRetries: 5,
 *   onRateLimited: (retryAfter, attempt) => {
 *     console.log(`Rate limited, retry ${attempt}. Wait: ${retryAfter ?? 'exponential'}s`);
 *   },
 * });
 * ```
 */
export declare function createKVStorage(url: string, options?: KVStorageOptions): ConsentStorage;
export {};