import { Bucket, File, GetBucketsResponse } from "@google-cloud/storage";
/**
 * An interface that provides BucketHelper class' typings
 * @typedef {IBucketHelper}
 */
export interface IBucketHelper {
    getBucket(name: string): Bucket | null;
    getBuckets(): Promise<GetBucketsResponse>;
    createBucket(name: string): Promise<{
        bucket: Bucket;
        response: any;
    }>;
    getFileFromBucket(bucketName: string, filePath: string): File | null;
    uploadFileToBucket(bucketName: string, filePath: string, data: any): Promise<string | null>;
}
/**
 * A class that provides GCP storage interactions
 * @class BucketHelper
 * @implements {IBucketHelper} - BucketHelper class interface
 * @property {any} credentials - Google Cloud Storage credentials
 */
declare class BucketHelper implements IBucketHelper {
    baseUri: string;
    /** @private */
    private credentials;
    /**
     * @param {string} _baseUri
     * @param {any} _credentials
     */
    constructor(_baseUri: string, _credentials: any);
    /**
     * @returns {Storage} - Google Cloud Storage instance
     */
    private get storage();
    /**
     * Returns bucket from its name
     * @param {string} name - Bucket name
     * @returns Bucket | null
     */
    getBucket(name: string): Bucket | null;
    /**
     * Returns buckets with the define GCP storage credentials
     * @returns Promise<GetBucketsResponse>
     */
    getBuckets(): Promise<GetBucketsResponse>;
    /**
     * Creates bucket from given name
     * @param {string} name
     * @returns Promise<{ bucket: Bucket, response: any; }>
     */
    createBucket(name: string): Promise<{
        bucket: Bucket;
        response: any;
    }>;
    /**
     * Returns file from bucket with the given file path
     * @param {string} bucketName - Bucket name
     * @param {string} filePath - File path in bucket
     * @returns File | null
     */
    getFileFromBucket(bucketName: string, filePath: string): File | null;
    /**
     * Uploads file to given bucket name and file path with the given data
     * @param {string} bucketName - Bucket name
     * @param {string} filePath - File path in bucket
     * @param {any} data - File data as string or buffer
     * @returns Promise<any>
     */
    uploadFileToBucket(bucketName: string, filePath: string, data: any): Promise<string | null>;
}
export default BucketHelper;