import { type StorageClass } from '@aws-sdk/client-s3';
import { webResourceHandler } from '@balena/pinejs';
import type { WebResourceType as WebResource } from '@balena/sbvr-types';
export interface S3HandlerProps {
    region: string;
    accessKey: string;
    secretKey: string;
    endpoint: string;
    bucket: string;
    maxSize?: number;
    signedUrlExpireTimeSeconds?: number;
    signedUrlCacheExpireTimeSeconds?: number;
    minimumMultipartUploadSize?: number;
    defaultMultipartUploadSize?: number;
    storageClass?: StorageClass;
}
export declare class S3Handler implements webResourceHandler.WebResourceHandler {
    private readonly config;
    private readonly bucket;
    private readonly maxFileSize;
    private readonly defaultMultipartUploadSize;
    private readonly minimumMultipartUploadSize;
    protected readonly signedUrlExpireTimeSeconds: number;
    protected readonly signedUrlCacheExpireTimeSeconds: number;
    protected cachedGetSignedUrl: (fileKey: string) => Promise<string>;
    protected readonly storageClass: StorageClass | undefined;
    private client;
    constructor(config: S3HandlerProps);
    handleFile(resource: webResourceHandler.IncomingFile): Promise<webResourceHandler.UploadResponse>;
    removeFile(href: string): Promise<void>;
    onPreRespond(webResource: WebResource): Promise<WebResource>;
    multipartUpload: {
        begin: (fieldName: string, payload: webResourceHandler.BeginMultipartUploadPayload) => Promise<webResourceHandler.BeginMultipartUploadHandlerResponse>;
        commit: ({ fileKey, uploadId, filename, providerCommitData, }: webResourceHandler.CommitMultipartUploadPayload) => Promise<WebResource>;
        cancel: ({ fileKey, uploadId, }: webResourceHandler.CancelMultipartUploadPayload) => Promise<void>;
        getMinimumPartSize: () => number;
        getDefaultPartSize: () => number;
    };
    private s3SignUrl;
    private getS3URL;
    private getKeyFromHref;
    private getFileKey;
    private getUploadParts;
    private getPartUploadUrl;
    private getChunkSizesWithParts;
}