"use client";

import Link from "next/link";
import { useEffect, useState } from "react";
import { usePathname, useRouter } from "next/navigation";

/** Volledige desktop-navigatie — logische groepen: overzicht → infra → bibliotheek → live → mensen → systeem */
const desktopLinks = [
  { href: "/dashboard", label: "Dashboard" },
  { href: "/nodes", label: "Nodes" },
  { href: "/movies", label: "Movies" },
  { href: "/series", label: "Series" },
  { href: "/pending", label: "Te koppelen" },
  { href: "/downloads", label: "Downloads" },
  { href: "/streams", label: "Streams" },
  { href: "/live-lists", label: "Live-lijsten" },
  { href: "/drm", label: "DRM" },
  { href: "/scripts", label: "Scripts" },
  { href: "/agent", label: "Agent" },
  { href: "/viewers", label: "Gebruikers" },
  { href: "/settings", label: "Instellingen" },
];

/** Bottom-nav (max 6): Series via drawer/desktop */
const mobileLinks = [
  { href: "/dashboard", label: "Home", short: "Home" },
  { href: "/nodes", label: "Nodes", short: "Nodes" },
  { href: "/movies", label: "Movies", short: "Films" },
  { href: "/downloads", label: "Downloads", short: "DL" },
  { href: "/streams", label: "Streams", short: "Live" },
  { href: "/viewers", label: "Users", short: "Users" },
];

export function Nav() {
  const pathname = usePathname();
  const router = useRouter();
  const [menuOpen, setMenuOpen] = useState(false);

  useEffect(() => {
    setMenuOpen(false);
  }, [pathname]);

  useEffect(() => {
    if (!menuOpen) return;
    const onKey = (e: KeyboardEvent) => {
      if (e.key === "Escape") setMenuOpen(false);
    };
    window.addEventListener("keydown", onKey);
    return () => window.removeEventListener("keydown", onKey);
  }, [menuOpen]);

  async function logout() {
    await fetch("/api/v1/auth/logout", { method: "POST", credentials: "include" });
    router.push("/");
  }

  const isActive = (href: string) => pathname === href || pathname.startsWith(`${href}/`);

  return (
    <>
      <nav className="topnav">
        <Link href="/dashboard" className="brand">
          <span className="brand-mark">VMC</span>
          <span className="brand-text">
            Vonas Media Cluster
            <small>ops console</small>
          </span>
        </Link>

        <div className="topnav-links topnav-links-desktop">
          {desktopLinks.map((l) => (
            <Link key={l.href} href={l.href} className={isActive(l.href) ? "active" : ""}>
              {l.label}
            </Link>
          ))}
        </div>

        <button type="button" className="btn-logout topnav-logout-desktop" onClick={logout}>
          Uitloggen
        </button>

        <button
          type="button"
          className={`nav-burger${menuOpen ? " open" : ""}`}
          aria-label={menuOpen ? "Menu sluiten" : "Menu openen"}
          aria-expanded={menuOpen}
          onClick={() => setMenuOpen((v) => !v)}
        >
          <span />
          <span />
          <span />
        </button>
      </nav>

      {menuOpen && (
        <div className="nav-drawer-backdrop" onClick={() => setMenuOpen(false)} aria-hidden />
      )}
      <aside className={`nav-drawer${menuOpen ? " open" : ""}`} aria-hidden={!menuOpen}>
        <div className="nav-drawer-head">
          <span className="page-kicker">Navigatie</span>
          <button type="button" className="btn-logout" onClick={() => setMenuOpen(false)}>
            Sluiten
          </button>
        </div>
        <div className="nav-drawer-links">
          {desktopLinks.map((l) => (
            <Link
              key={l.href}
              href={l.href}
              className={isActive(l.href) ? "active" : ""}
              onClick={() => setMenuOpen(false)}
            >
              {l.label}
            </Link>
          ))}
        </div>
        <button type="button" className="btn-logout nav-drawer-logout" onClick={logout}>
          Uitloggen
        </button>
      </aside>

      <nav className="bottomnav" aria-label="Hoofdnavigatie">
        {mobileLinks.map((l) => (
          <Link key={l.href} href={l.href} className={isActive(l.href) ? "active" : ""}>
            <span className="bottomnav-dot" aria-hidden />
            <span>{l.short}</span>
          </Link>
        ))}
      </nav>
    </>
  );
}

export function useAuth() {
  const router = useRouter();
  useEffect(() => {
    fetch("/api/v1/auth/me", { credentials: "include" })
      .then((r) => {
        if (!r.ok) router.push("/");
      })
      .catch(() => router.push("/"));
  }, [router]);
}