import * as http from 'node:http'

import { CookieOpts } from '#utils/cookie.js'
export { CookieOpts }
export { TooBusyOptions } from '#utils/tooBusy.js'
export { HeaderParserResult } from '#utils/headerParser.js'

export { BodyParserOptions } from '#middleware/bodyParser.js'
export { CacheControlDirectives } from '#middleware/cacheControl.js'
export { CspMiddlewareOptions, CspOptions, HstsOptions, ReferrerPolicy } from '#middleware/contentSec.js'
export { CorsOptions } from '#middleware/cors.js'
export { PresetOptions } from '#middleware/presets.js'
export { RetryAfterOption } from '#middleware/tooBusy.js'

export type Method = 'ALL'|'ACL'|'BIND'|'CHECKOUT'|'CONNECT'|'COPY'|'DELETE'|'GET'|'HEAD'|'LINK'|'LOCK'|'M-SEARCH'|'MERGE'|'MKACTIVITY'|'MKCALENDAR'|'MKCOL'|'MOVE'|'NOTIFY'|'OPTIONS'|'PATCH'|'POST'|'PROPFIND'|'PROPPATCH'|'PURGE'|'PUT'|'REBIND'|'REPORT'|'SEARCH'|'SOURCE'|'SUBSCRIBE'|'TRACE'|'UNBIND'|'UNLINK'|'UNLOCK'|'UNSUBSCRIBE'

export interface Request extends http.IncomingMessage {
  /**
   * url of the request
   */
  url: string
  /**
   * original url of the request. `url` is rewritten if Router is mounted
   */
  originalUrl?: string
  /**
   * params object from url parameters e.g. for route
   * `/authors/:author/books/:bookTitle` would return with url
   * `/authors/melville/books/moby-dick` the object
   * `{ author: 'melville', bookTitle: 'moby-dick' }`
   */
  params: Record<string, string>|{}
  /**
   * url path;
   * needs queryParser middleware
   */
  path?: string
  /**
   * query parameters e.g. `?foo=bar&v=1` becomes `{ foo: 'bar', v: '1' }`;
   * needs queryParser middleware
   */
  query?: Record<string, string>|{}
  /**
   * parsed request body;
   * needs bodyParser middleware
   */
  body?: Record<string, any>|{}|Buffer
  /**
   * parsed cookies;
   * needs cookieParser middleware
   */
  cookies?: Record<string, string>|{}
  /**
   * request id;
   * needs requestId middleware
   */
  id?: string
}

export interface Response extends http.ServerResponse {
  /**
   * response body
   */
  body?: any
  /**
   * send request;
   * needs send or sendEtag middleware
   */
  send?: (body: any, status?: number, headers?: object) => void
  /**
   * redirect request;
   * needs send middleware
   */
  redirect?: (location: string, status?: number, headers?: object) => void
  /**
   * send request;
   * needs json or jsonEtag middleware
   */
  json?: (body: any, status?: number, headers?: object) => void
  /**
   * sets a response cookie;
   * needs cookieParser middleware
   */
  cookie?: (name: string, value: string|number|boolean, opts?: CookieOpts) => Response
  /**
   * Clears the cookie specified by name;
   * needs cookieParser middleware
   */
  clearCookie?: (name: string, opts?: CookieOpts) => Response
  /**
   * local template variables for res.render;
   * needs renderEngine middleware
   */
  locals?: Record<string, any>
  /**
   * template render function;
   * needs renderEngine middleware
   */
  render?: (name: string, locals: Record<string, any>) => Promise<void>
  /**
   * set flag for connect to indicate that response is ended by a streaming
   * pipeline. Causes connect to exit stack loop.
   */
  writablePiped?: boolean
}

export function HandlerCb (
  req: Request,
  res: Response,
  next: Function
): void

export function HandlerAsync (
  req: Request,
  res: Response
): Promise<void>

export function ErrorHandler (
  err: Error,
  req: Request,
  res: Response,
  next: Function
): void

export function FinalHandler (
  err: Error,
  req: Request,
  res: Response
): void

export type Handler = typeof HandlerCb | typeof HandlerAsync | typeof ErrorHandler

export interface HttpError extends Error {
  status: number
}

export interface Log {
  debug: Function
  info: Function
  warn: Function
  error: Function
}