import { PresignedDownloadUrlRequestDto, PresignedDownloadUrlResponseDto, PresignedUploadUrlRequestDto, PresignedUploadUrlResponseDto } from "../dto";
import { OSSConfig } from "../shared";
export declare class OSSService {
    private readonly logger;
    private publicClient;
    private privateClient;
    private config;
    private publicBucket;
    private privateBucket;
    private expiresInSeconds;
    initialize(config: OSSConfig, publicBucket: string, privateBucket: string, expiresIn?: string | number): void;
    private ensureInitialized;
    private getClient;
    private getBucketName;
    private generateFileKey;
    private getPublicUrl;
    generatePresignedUploadUrl(request: PresignedUploadUrlRequestDto): Promise<PresignedUploadUrlResponseDto>;
    private parseUrl;
    generatePresignedDownloadUrl(request: PresignedDownloadUrlRequestDto): Promise<PresignedDownloadUrlResponseDto>;
    isConfigured(): boolean;
}