import { Request, Response, NextFunction } from 'express';

type ImageType = "avatar" | "normal";
type ImageFormat = "jpeg" | "jpg" | "png" | "webp" | "gif" | "tiff" | "avif" | "svg";
type Options = {
    baseDir: string;
    idHandler?: (id: string) => string;
    getUserFolder?: (req: Request, id?: string | undefined) => Promise<string>;
    websiteURL?: string;
    apiRegex?: RegExp;
    allowedNetworkList?: string[];
};
type UserData = {
    quality: number | string;
    format: ImageFormat;
    src?: string;
    folder?: string;
    type?: ImageType;
    userId?: string;
    width?: number | string;
    height?: number | string;
};

/**
 * @function registerServe
 * @description A function to register the serveImage function as middleware for Express.
 * @param {Options} options - The options object for image processing.
 * @returns {function(Request, Response, NextFunction): Promise<void>} The middleware function.
 */
declare const registerServe: (options: Options) => (req: Request, res: Response, next: NextFunction) => Promise<void>;

/**
 * @typedef {("avatar" | "normal")} ImageType
 * @description Defines the type of image being processed.
 */
/**
 * Checks if a specified path is valid within a base path.
 *
 * @param {string} basePath - The base directory to resolve paths.
 * @param {string} specifiedPath - The path to check.
 * @returns {boolean} True if the path is valid, false otherwise.
 */
declare const isValidPath: (basePath: string, specifiedPath: string) => Promise<boolean>;

export { type ImageFormat, type ImageType, type Options, type UserData, isValidPath, registerServe };