import { Http } from "../http";
interface UploadResult {
    uri: string;
    width: number;
    height: number;
    size: number;
    md5: string;
}
export declare class DouyinImageUploader {
    private proxyHttp;
    private headers;
    private queryParams;
    private tmpCachePath;
    private authCache;
    private authExpireTime;
    private readonly AUTH_REFRESH_BUFFER;
    private readonly CONCURRENT_LIMIT;
    private readonly UPLOAD_DELAY;
    private readonly UPLOAD_TIMEOUT;
    private readonly TOS_UPLOAD_TIMEOUT;
    private uploadAgent;
    constructor(proxyHttp: Http, headers: Record<string, string>, queryParams: Record<string, string>, tmpCachePath: string, isHttps?: boolean);
    /**
     * 获取有效的上传凭证（带缓存）
     */
    private getValidAuth;
    /**
     * 获取单张图片的上传地址
     */
    private getUploadAddress;
    /**
     * 上传单张图片到TOS
     */
    private uploadToTOS;
    /**
     * 处理单张图片（下载+上传）- 失败直接跳过
     */
    private processSingleImage;
    /**
     * 获取图片信息
     */
    private getImageInfo;
    /**
     * 批量上传图片（带并发控制）
     */
    uploadImages(imageUrls: string[]): Promise<UploadResult[]>;
    /**
     * 上传封面图（单张）
     */
    uploadCover(coverUrl: string): Promise<UploadResult | null>;
    /**
     * 安全删除文件
     */
    private safeDeleteFile;
    private delay;
    private withRetry;
    /**
     * 销毁连接池
     */
    destroy(): void;
}
export {};