import { Api } from "../tl";
import type { TelegramClient } from "./TelegramClient";
import { EntityLike, OutFile, ProgressCallback } from "../define";
import bigInt from "big-integer";
export interface progressCallback {
    (downloaded: bigInt.BigInteger, fullSize: bigInt.BigInteger, ...args: any[]): void;
    isCanceled?: boolean;
    acceptsBuffer?: boolean;
}
export interface DownloadFileParams {
    outputFile?: OutFile;
    dcId?: number;
    fileSize?: bigInt.BigInteger;
    partSizeKb?: number;
    progressCallback?: progressCallback;
    msgData?: [EntityLike, number];
}
export interface DownloadProfilePhotoParams {
    isBig?: boolean;
    outputFile?: OutFile;
}
/** @hidden */
export declare function downloadFile(client: TelegramClient, inputLocation: Api.TypeInputFileLocation, { outputFile, partSizeKb, fileSize, progressCallback, dcId, }: DownloadFileParams): Promise<Buffer | string | undefined>;
export interface DownloadMediaInterface {
    outputFile?: OutFile;
    thumb?: number | Api.TypePhotoSize;
    progressCallback?: ProgressCallback;
}
/** @hidden */
export declare function downloadMedia(client: TelegramClient, messageOrMedia: Api.Message | Api.TypeMessageMedia, outputFile?: OutFile, thumb?: number | Api.TypePhotoSize, progressCallback?: ProgressCallback): Promise<Buffer | string | undefined>;
/** @hidden */
export declare function _downloadDocument(client: TelegramClient, doc: Api.MessageMediaDocument | Api.TypeDocument, outputFile: OutFile | undefined, date: number, thumb?: number | string | Api.TypePhotoSize, progressCallback?: ProgressCallback, msgData?: [EntityLike, number]): Promise<Buffer | string | undefined>;
/** @hidden */
export declare function _downloadContact(_client: TelegramClient, _media: Api.MessageMediaContact, _args: DownloadMediaInterface): Promise<Buffer>;
/** @hidden */
export declare function _downloadWebDocument(_client: TelegramClient, _media: Api.WebDocument | Api.WebDocumentNoProxy, _args: DownloadMediaInterface): Promise<Buffer>;
/** @hidden */
export declare function _downloadCachedPhotoSize(size: Api.PhotoCachedSize | Api.PhotoStrippedSize, outputFile?: OutFile): Promise<string | Buffer<ArrayBufferLike> | undefined>;
/** @hidden */
export declare function _downloadPhoto(client: TelegramClient, photo: Api.MessageMediaPhoto | Api.Photo, file?: OutFile, date?: number, thumb?: number | string | Api.TypePhotoSize, progressCallback?: progressCallback): Promise<Buffer | string | undefined>;
/** @hidden */
export declare function downloadProfilePhoto(client: TelegramClient, entity: EntityLike, fileParams: DownloadProfilePhotoParams): Promise<string | Buffer<ArrayBufferLike> | undefined>;