/// <reference types="node" />
import OSS from "ali-oss";
import Core from "@alicloud/pop-core";
import { CloudStorageClient, PutObjectOption, STSResponse } from "../interfaces";
export interface AlibabaCloudGatewayConfig {
    accessKey: string;
    secret: string;
    apiVersion?: string;
    endpoint: string;
    timeout?: number;
    oss: {
        bucketName: string;
        region: string;
    };
    sts: {
        roleArn: string;
    };
}
export declare class AlibabaCloudGateway implements CloudStorageClient {
    protected config: AlibabaCloudGatewayConfig;
    protected coreClient: Core;
    protected ossClient: OSS;
    constructor(config: AlibabaCloudGatewayConfig);
    generateTmpCredentials(sessionID: string): Promise<STSResponse["Credentials"]>;
    uploadLocalToBucket(fileName: string, fileData: Buffer, options?: PutObjectOption): Promise<string>;
    deleteObject(filePath: string): Promise<void>;
    uploadRemoteObjectToBucket(fileName: string, remoteUrl: string, options?: PutObjectOption): Promise<string>;
    getObjectReadStream(fileName: string): Promise<OSS.GetStreamResult>;
    writeFileToDestination(fileName: string, destination: string | WritableStream): Promise<OSS.GetObjectResult>;
}