"use client";

import Link from "next/link";
import Image from "next/image";
import { usePathname } from "next/navigation";
import { useState } from "react";
import logo from "@/app/logo_iptek.png";
import { useLang } from "@/context/LanguageContext";
import { t } from "@/lib/translations";

export default function Navbar() {
  const pathname = usePathname();
  const [menuOpen, setMenuOpen] = useState(false);
  const { lang, setLang } = useLang();
  const tr = t[lang].nav;

  const navLinks = [
    { href: "/", label: tr.home },
    { href: "/about", label: tr.about },
    { href: "/products", label: tr.products },
    { href: "/contact", label: tr.contact },
  ];

  return (
    <nav className="fixed top-0 w-full z-50 bg-white/70 backdrop-blur-lg shadow-[0_16px_32px_rgba(0,0,0,0.04)] h-20">
      <div className="flex justify-between items-center max-w-7xl mx-auto px-6 h-full">
        {/* Logo */}
        <Link href="/" className="flex items-center gap-3">
          <Image src={logo} alt="IPTEK Logo" height={36} className="object-contain" />
          <span className="text-2xl font-black tracking-tighter text-blue-700 font-headline">
            IPTEK
          </span>
        </Link>

        {/* Desktop Nav */}
        <div className="hidden md:flex items-center gap-8 text-sm font-semibold tracking-tight">
          {navLinks.map((link) => (
            <Link
              key={link.href}
              href={link.href}
              className={
                pathname === link.href
                  ? "text-blue-600 border-b-2 border-blue-600 pb-1"
                  : "text-slate-600 hover:text-blue-500 transition-colors"
              }
            >
              {link.label}
            </Link>
          ))}
        </div>

        {/* Right side: lang switcher + CTA + hamburger */}
        <div className="flex items-center gap-3">
          {/* Language switcher */}
          <button
            onClick={() => setLang(lang === "id" ? "en" : "id")}
            className="flex items-center gap-1.5 px-3 py-1.5 rounded-full border border-outline-variant/40 bg-surface-container-low text-sm font-bold text-on-surface hover:bg-surface-container transition-colors select-none"
            aria-label="Switch language"
          >
            <span>{lang === "id" ? "🇮🇩" : "🇬🇧"}</span>
            <span>{lang.toUpperCase()}</span>
          </button>

          <Link
            href="/contact"
            className="hidden md:block bg-gradient-to-br from-primary to-primary-container text-on-primary px-6 py-2.5 rounded-lg text-sm font-bold shadow-lg hover:opacity-80 transition-all duration-300 active:scale-95"
          >
            {tr.cta}
          </Link>

          {/* Mobile Hamburger */}
          <button
            className="md:hidden flex flex-col gap-1.5 p-2"
            onClick={() => setMenuOpen(!menuOpen)}
            aria-label="Toggle menu"
          >
            <span
              className={`block h-0.5 w-6 bg-slate-700 transition-transform duration-300 ${menuOpen ? "rotate-45 translate-y-2" : ""}`}
            />
            <span
              className={`block h-0.5 w-6 bg-slate-700 transition-opacity duration-300 ${menuOpen ? "opacity-0" : ""}`}
            />
            <span
              className={`block h-0.5 w-6 bg-slate-700 transition-transform duration-300 ${menuOpen ? "-rotate-45 -translate-y-2" : ""}`}
            />
          </button>
        </div>
      </div>

      {/* Mobile Menu */}
      {menuOpen && (
        <div className="md:hidden bg-white/95 backdrop-blur-lg border-t border-outline-variant px-6 py-4 flex flex-col gap-4">
          {navLinks.map((link) => (
            <Link
              key={link.href}
              href={link.href}
              onClick={() => setMenuOpen(false)}
              className={
                pathname === link.href
                  ? "text-blue-600 font-bold"
                  : "text-slate-600 hover:text-blue-500 transition-colors"
              }
            >
              {link.label}
            </Link>
          ))}
          <Link
            href="/contact"
            onClick={() => setMenuOpen(false)}
            className="bg-gradient-to-br from-primary to-primary-container text-on-primary px-6 py-2.5 rounded-lg text-sm font-bold text-center mt-2"
          >
            {tr.cta}
          </Link>
        </div>
      )}
    </nav>
  );
}