import { CDNConfig, CDNRefreshResult, CDNRefreshTask } from '../types';
/**
 * 阿里云 CDN 缓存刷新服务
 * 基于阿里云 CDN API 实现缓存刷新功能
 */
export declare class CDNRefreshService {
    private config;
    private endpoint;
    constructor(config: CDNConfig);
    /**
     * 刷新单个 URL 的缓存
     */
    refreshUrl(url: string): Promise<CDNRefreshResult>;
    /**
     * 刷新目录的缓存
     */
    refreshDirectory(dirUrl: string): Promise<CDNRefreshResult>;
    /**
     * 预热单个 URL
     */
    preloadUrl(url: string, options?: {
        area?: 'domestic' | 'overseas';
        l2Preload?: boolean;
        withHeader?: Record<string, string[]>;
        queryHashkey?: boolean;
        consistencyHash?: boolean;
    }): Promise<CDNRefreshResult>;
    /**
     * 批量预热 URL
     */
    preloadUrls(urls: string[], options?: {
        area?: 'domestic' | 'overseas';
        l2Preload?: boolean;
        withHeader?: Record<string, string[]>;
        queryHashkey?: boolean;
        consistencyHash?: boolean;
    }): Promise<CDNRefreshResult[]>;
    /**
     * 批量刷新 URL 缓存
     */
    refreshUrls(urls: string[]): Promise<CDNRefreshResult[]>;
    /**
     * 查询刷新任务状态
     */
    getRefreshTaskStatus(taskId: string): Promise<CDNRefreshTask | null>;
    /**
     * 查询刷新配额
     */
    getRefreshQuota(): Promise<any>;
    /**
     * 构建完整的 CDN URL
     */
    buildCDNUrl(remotePath: string): string;
    /**
     * 发送 API 请求
     */
    private makeRequest;
    /**
     * 生成 API 签名
     */
    private generateSignature;
    /**
     * 验证配置
     */
    validateConfig(): Promise<boolean>;
}
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