/**
 * @module file
 * @description Provides functionality for file upload operations in Frappe.
 * This module handles file uploads with progress tracking, authentication,
 * and custom metadata support.
 *
 * @packageDocumentation
 *
 * @example
 * ```typescript
 * import { FrappeApp } from '@frappe/sdk';
 *
 * const app = new FrappeApp('https://instance.example.com');
 * const fileUploader = app.file();
 *
 * // Upload a file with progress tracking
 * await fileUploader.uploadFile(
 *   fileBlob,
 *   {
 *     isPrivate: true,
 *     folder: 'Home/Documents'
 *   },
 *   (uploaded, total) => {
 *     console.log(`Progress: ${(uploaded/total) * 100}%`);
 *   }
 * );
 * ```
 */
import { AxiosInstance, AxiosProgressEvent } from 'axios';
import { FileArgs } from './types';
import { FrappeDoc } from '../frappe/types';
/**
 * Handles file upload operations for Frappe.
 *
 * @class FrappeFileUpload
 * @description Provides methods for uploading files to a Frappe instance with
 * support for progress tracking, authentication, and custom metadata.
 *
 * @example
 * ```typescript
 * const uploader = new FrappeFileUpload(
 *   'https://instance.example.com',
 *   axiosInstance,
 *   true,
 *   () => localStorage.getItem('token'),
 *   'Bearer'
 * );
 *
 * // Upload a file
 * const response = await uploader.uploadFile(
 *   file,
 *   { isPrivate: true }
 * );
 * ```
 */
export declare class FrappeFileUpload {
    /** URL of the Frappe App instance */
    private readonly appURL;
    /** Axios instance for making HTTP requests */
    readonly axios: AxiosInstance;
    /** Whether to use token based authentication */
    readonly useToken: boolean;
    /** Function that returns the authentication token */
    readonly token?: () => string;
    /** Type of token to be used for authentication */
    readonly tokenType?: 'Bearer' | 'token';
    /** Custom headers to be included in requests */
    readonly customHeaders?: object;
    /**
     * Creates a new FrappeFileUpload instance.
     *
     * @param appURL - Base URL of the Frappe instance
     * @param axios - Configured Axios instance for making requests
     * @param useToken - Whether to use token-based authentication
     * @param token - Function that returns the authentication token
     * @param tokenType - Type of token to use ('Bearer' or 'token')
     * @param customHeaders - Additional headers to include in requests
     *
     * @example
     * ```typescript
     * const uploader = new FrappeFileUpload(
     *   'https://instance.example.com',
     *   axiosInstance,
     *   true,
     *   () => localStorage.getItem('token'),
     *   'Bearer'
     * );
     * ```
     */
    constructor(appURL: string, axios: AxiosInstance, useToken?: boolean, token?: () => string, tokenType?: 'Bearer' | 'token', customHeaders?: object);
    /**
     * Uploads a file to the Frappe instance with optional progress tracking.
     *
     * @template T - Type of additional data to be sent with the file
     * @param file - The file to upload
     * @param args - Configuration options for the upload
     * @param onProgress - Optional callback for tracking upload progress
     * @param apiPath - Optional custom API endpoint path (defaults to 'upload_file')
     *
     * @returns Promise that resolves with the upload response
     * @throws {FrappeError} If the upload fails
     *
     * @example
     * ```typescript
     * // Basic file upload
     * const response = await uploader.uploadFile(
     *   file,
     *   { isPrivate: true }
     * );
     *
     * // Upload with progress tracking
     * const response = await uploader.uploadFile(
     *   file,
     *   { folder: 'Home/Documents' },
     *   (uploaded, total) => {
     *     console.log(`Progress: ${(uploaded/total) * 100}%`);
     *   }
     * );
     *
     * // Upload with custom metadata
     * interface CustomData {
     *   category: string;
     * }
     *
     * const response = await uploader.uploadFile<CustomData>(
     *   file,
     *   {
     *     doctype: 'File',
     *     docname: 'FILE-001',
     *     otherData: { category: 'Important' }
     *   }
     * );
     * ```
     */
    uploadFile<T extends FrappeDoc<object>>(file: File, args: FileArgs, onProgress?: (bytesUploaded: number, totalBytes?: number, progress?: AxiosProgressEvent) => void, apiPath?: string): Promise<T>;
}
/**
 * Handles file download operations for Frappe.
 *
 * @class FrappeFileDownload
 * @description Provides methods for downloading files from a Frappe instance.
 *
 * @example
 * ```typescript
 * const downloader = new FrappeFileDownload(axiosInstance)
 * const response = await downloader.downloadFile('https://instance.example.com/files/test.pdf')
 * ```
 */
export declare class FrappeFileDownload {
    private readonly axios;
    constructor(axios: AxiosInstance);
    /**
     * Downloads a file from the Frappe instance.
     *
     * @param fileURL - The URL of the file to download
     * @returns Promise that resolves with the download response
     * @throws {FrappeError} If the download fails
     */
    downloadFile(fileURL: string): Promise<Blob>;
}