import { Readable } from "stream";
type UploadFile = {
    fileName: string;
    fileType: string;
    data: Readable | string;
};
type UploadWithSignedUrl = UploadFile & {
    expiresInSeconds: number;
};
export interface StorageService {
    uploadFile(params: UploadFile): Promise<void>;
    uploadWithSignedUrl(params: UploadWithSignedUrl): Promise<{
        signedUrl: string;
    }>;
    uploadJson(path: string, body: Record<string, unknown>[]): Promise<void>;
    download(path: string): Promise<string>;
    listFiles(prefix: string): Promise<{
        file: string;
        createdAt: Date;
    }[]>;
    getSignedUrl(fileName: string, // eslint-disable-line no-unused-vars
    ttlSeconds: number, // eslint-disable-line no-unused-vars
    asAttachment?: boolean): Promise<string>;
    getSignedUploadUrl(params: {
        path: string;
        ttlSeconds: number;
        sha256Hash: string;
        contentType: string;
        contentLength: number;
    }): Promise<string>;
    deleteFiles(paths: string[]): Promise<void>;
}
export declare class StorageServiceFactory {
    /**
     * Get an instance of the StorageService
     * @param params.accessKeyId - Access key ID
     * @param params.secretAccessKey - Secret access key
     * @param params.bucketName - Bucket name to store files
     * @param params.endpoint - Endpoint - Endpoint to an S3 compatible API (or Azure Blob Storage)
     * @param params.externalEndpoint - External endpoint to replace the internal endpoint in the signed URL.
     * @param params.region - Region in which the bucket resides
     * @param params.forcePathStyle - Add bucket name into the path instead of the domain name. Mainly used for MinIO.
     * @param params.useAzureBlob - Use Azure Blob Storage instead of S3
     * @param params.useGoogleCloudStorage - Use Google Cloud Storage instead of S3
     * @param params.googleCloudCredentials - Google Cloud Storage credentials JSON string or path to credentials file
     * @param params.awsSse - Server-side encryption method (e.g., "aws:kms")
     * @param params.awsSseKmsKeyId - SSE KMS Key ID when using KMS encryption
     */
    static getInstance(params: {
        accessKeyId: string | undefined;
        secretAccessKey: string | undefined;
        bucketName: string;
        endpoint: string | undefined;
        externalEndpoint?: string | undefined;
        region: string | undefined;
        forcePathStyle: boolean;
        useAzureBlob?: boolean;
        useGoogleCloudStorage?: boolean;
        googleCloudCredentials?: string;
        awsSse: string | undefined;
        awsSseKmsKeyId: string | undefined;
    }): StorageService;
}
export {};
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