import { z } from "zod"

import { Lang } from "@/constants/languages"

export function findLang(pathname: string) {
  const langFromPath = Object.values(Lang).find(
    (l) => pathname.startsWith(`/${l}/`) || pathname === `/${l}`
  )

  const parsedLang = languageSchema.safeParse(langFromPath)
  if (!parsedLang.success) {
    return undefined
  }

  return parsedLang.data
}

export const languageSchema = z.preprocess(
  (arg) => (typeof arg === "string" ? arg.toLowerCase() : arg),
  z.nativeEnum(Lang)
)