import { Link, usePage } from "@inertiajs/react";
import { ChevronDown, Menu, X } from "lucide-react";
import { useState } from "react";

import logo from "&/images/global/logo-qualimaine-RVB-defaut.png";
import useTrans from "@/hooks/use-translations";
import { GetTranslation } from "@/lib/utils";

interface NavLinkResolved {
  label: string;
  href: string;
  resolvedHref: string;
}

const NAV_LINKS = [
  { label: "front.menus.about_us", href: "front.whoAreWeSection.slug" },
  { label: "front.menus.engagements", href: "front.engagements.slug" },
  { label: "front.menus.normes", href: "norms.slug" },
  { label: "front.menus.contact", href: "footer.contactSlug" },
];

function useSectionHref(slugKey: string) {
  const { url, props } = usePage() as unknown as {
    url: string;
    props: { appEnv: { locales: string[] } };
  };
  const slug = useTrans(slugKey);

  const isHome =
    url === "/" || props.appEnv.locales.some((locale) => url === `/${locale}`);

  if (isHome) return `#${slug}`;
  return `${route("front.homepage")}#${slug}`;
}

function LanguageDropdown() {
  const { appEnv, localizedUrls } = usePage().props as unknown as {
    appEnv: { locale: string; locales: string[] };
    localizedUrls: Record<string, string>;
  };
  const [open, setOpen] = useState(false);

  const otherLocales = appEnv.locales.filter(
    (locale) => locale !== appEnv.locale,
  );

  return (
    <div className="relative w-16">
      <button
        onClick={() => {
          setOpen((v) => !v);
        }}
        className={`relative flex w-full items-center justify-center border border-neutral-700 bg-white/10 pl-4 pr-3 py-1 font-sans text-[16px] font-bold text-neutral-700 backdrop-blur-sm transition-colors hover:bg-white/10 ${
          open ? "rounded-t-3xl border-b-0" : "rounded-3xl"
        }`}
      >
        <span className="invisible w-3.5" aria-hidden="true" />
        <span className="flex-1 text-center">
          {appEnv.locale.toUpperCase()}
        </span>
        <ChevronDown
          size={28}
          className={`w-64 transition-transform ${open ? "rotate-180" : ""}`}
        />
      </button>

      {open && (
        <div className="absolute inset-x-0 top-full z-50 overflow-hidden rounded-b-3xl border border-t-0 border-neutral-700 bg-white/10 backdrop-blur-sm">
          {otherLocales.map((locale) => (
            <a
              key={locale}
              href={localizedUrls[locale]}
              className="flex items-center justify-end px-3 py-1.5 font-sans text-[16px] font-bold text-neutral-700"
            >
              <span className="rounded-full px-2.5 py-1 transition-colors hover:bg-white/60">
                {locale.toUpperCase()}
              </span>
            </a>
          ))}
        </div>
      )}
    </div>
  );
}

export default function Navbar() {
  const [mobileOpen, setMobileOpen] = useState(false);
  const navLinks: NavLinkResolved[] = [
    { ...NAV_LINKS[0], resolvedHref: useSectionHref(NAV_LINKS[0].href) },
    { ...NAV_LINKS[1], resolvedHref: useSectionHref(NAV_LINKS[1].href) },
    { ...NAV_LINKS[2], resolvedHref: useSectionHref(NAV_LINKS[2].href) },
    { ...NAV_LINKS[3], resolvedHref: useSectionHref(NAV_LINKS[3].href) },
  ];

  return (
    <div className="relative z-20 w-full">
      <div className="flex w-full items-center justify-between px-6 py-5 md:px-10">
        <Link href={route("front.homepage")}>
          <img
            src={logo}
            alt={useTrans("front.logo_alt")}
            title={useTrans("front.logo_title")}
            className="h-18 w-auto md:h-26 mt-4"
          />
        </Link>

        <nav className="hidden items-center gap-7 md:flex">
          {navLinks.map((link) => (
            <Link
              key={GetTranslation(link.href)}
              href={link.resolvedHref}
              className="rounded-3xl px-2 py-1.5 font-sans text-lg font-bold text-neutral-800 transition-colors hover:bg-band"
            >
              {GetTranslation(link.label)}
            </Link>
          ))}
          <LanguageDropdown />
        </nav>

        <div className="flex items-center gap-3 md:hidden">
          <LanguageDropdown />
          <button
            onClick={() => {
              setMobileOpen((v) => !v);
            }}
            aria-label="Menu"
            className="p-2"
          >
            {mobileOpen ? <X size={28} /> : <Menu size={28} />}
          </button>
        </div>
      </div>

      {mobileOpen && (
        <div className="fixed inset-0 z-2000 flex flex-col bg-band md:hidden">
          <div className="flex items-center justify-between px-6 py-5">
            <Link
              href="/"
              onClick={() => {
                setMobileOpen(false);
              }}
            >
              <img
                src={logo}
                alt={GetTranslation("front.logo_alt")}
                title={GetTranslation("front.logo_title")}
                className="h-18 w-auto"
              />
            </Link>
            <div className="flex items-center gap-3">
              <button
                onClick={() => {
                  setMobileOpen(false);
                }}
                aria-label=""
                className="p-2"
              >
                <X size={28} className="text-neutral-800" />
              </button>
              <LanguageDropdown />
            </div>
          </div>

          <nav className="mt-[25%] flex flex-1 flex-col items-center justify-start gap-5 px-8">
            {navLinks.map((link) => (
              <Link
                key={link.href}
                href={link.resolvedHref}
                className="w-full max-w-[280px] rounded-full bg-[#4b4b45] py-3 text-center font-sans text-[18px] font-bold text-white shadow-md transition-colors hover:bg-[#FFD41F] hover:text-black"
                onClick={() => {
                  setMobileOpen(false);
                }}
              >
                {GetTranslation(link.label)}
              </Link>
            ))}
          </nav>
        </div>
      )}
    </div>
  );
}