import { type NextMiddleware, NextResponse } from "next/server"

import { Lang } from "@scandic-hotels/common/constants/language"
import { findLang } from "@scandic-hotels/common/utils/languages"

import { getDefaultRequestHeaders } from "./utils"

import type { MiddlewareMatcher } from "@/types/middleware"

export const middleware: NextMiddleware = (request) => {
  const headers = getDefaultRequestHeaders(request)

  headers.set("x-lang", Lang.en)
  return NextResponse.rewrite(
    new URL(`/${Lang.en}/middleware-error/404`, request.nextUrl),
    {
      request: {
        headers,
      },
      status: 404,
      statusText: "Not found",
    }
  )
}

export const matcher: MiddlewareMatcher = (request) => {
  const lang = findLang(request.nextUrl.pathname)
  return !lang
}