import { Drive, DriveFileStats, SignedUrlOptions, WriteOptions } from '@apoyo/files';
import { StorageOptions, Storage } from '@google-cloud/storage';

declare type GcsDriveConfig = StorageOptions & {
    bucket: string;
    prefix?: string;
    usingUniformAcl?: boolean;
    cdnUrl?: string;
};
declare class GcsDrive implements Drive {
    private _config;
    /**
     * Reference to the GCS Bucket
     */
    private _gcsBucket;
    /**
     * Reference to the gcs storage instance
     */
    adapter: Storage;
    /**
     * Name of the driver
     */
    name: 'gcs';
    constructor(_config: GcsDriveConfig);
    /**
     * Make absolute path to a given location
     */
    makePath(location: string): string;
    /**
     * Transforms the write options to GCS properties. Checkout the
     * following example in the docs to see the available options
     *
     * https://googleapis.dev/nodejs/storage/latest/File.html#createWriteStream
     */
    private _transformWriteOptions;
    /**
     * Transform content headers to GCS response headers
     */
    private _transformContentHeaders;
    /**
     * Converts seconds to milliseconds
     */
    private _secondsToTimeStamp;
    /**
     * Returns a new instance of the GCS driver with
     * a custom runtime bucket
     */
    bucket(bucket: string): GcsDrive;
    /**
     * Returns the file contents as a buffer. The buffer return
     * value allows you to self choose the encoding when
     * converting the buffer to a string.
     */
    get(location: string): Promise<Buffer>;
    /**
     * Returns the file contents as a stream
     */
    getStream(location: string): Promise<NodeJS.ReadableStream>;
    /**
     * A boolean to find if the location path exists or not
     */
    exists(location: string): Promise<boolean>;
    /**
     * Returns the file stats
     */
    getStats(location: string): Promise<DriveFileStats>;
    /**
     * Returns the signed url for a given path
     */
    getSignedUrl(location: string, options?: SignedUrlOptions): Promise<string>;
    /**
     * Returns URL to a given path
     */
    getUrl(location: string): Promise<string>;
    /**
     * Write string|buffer contents to a destination. The missing
     * intermediate directories will be created (if required).
     */
    put(location: string, contents: Buffer | string, options?: WriteOptions): Promise<void>;
    /**
     * Write a stream to a destination. The missing intermediate
     * directories will be created (if required).
     */
    putStream(location: string, contents: NodeJS.ReadableStream, options?: WriteOptions): Promise<void>;
    /**
     * Remove a given location path
     */
    delete(location: string): Promise<void>;
    /**
     * Copy a given location path from the source to the desination.
     * The missing intermediate directories will be created (if required)
     */
    copy(source: string, destination: string, options?: WriteOptions): Promise<void>;
    /**
     * Move a given location path from the source to the desination.
     * The missing intermediate directories will be created (if required)
     */
    move(source: string, destination: string, options?: WriteOptions): Promise<void>;
}

export { GcsDrive, GcsDriveConfig };