"use client";

import { useState } from "react";
import { motion, AnimatePresence } from "framer-motion";
import { Menu, X } from "lucide-react";
import Link from "next/link";
import { useLocale, useTranslations } from "next-intl";
import { usePathname } from "next/navigation";
import { ThemeToggle } from "./ThemeToggle";

const Header = () => {
  const [isOpen, setIsOpen] = useState(false);
  const locale = useLocale();
  const pathname = usePathname();
  const t = useTranslations("nav");

  const isHome = pathname === `/${locale}` || pathname === `/${locale}/`;

  const navItems = [
    { name: t("home"), href: `/${locale}` },
    { name: t("about"), href: isHome ? "#about" : `/${locale}#about` },
    { name: t("projects"), href: isHome ? "#projects" : `/${locale}/projects` },
    { name: t("contact"), href: isHome ? "#contact" : `/${locale}#contact` },
  ];

  return (
    <>
      <div className="fixed top-8 left-0 right-0 z-50 flex justify-center px-6 pointer-events-none">
        <motion.nav
          initial={{ y: -100, opacity: 0 }}
          animate={{ y: 0, opacity: 1 }}
          className="pointer-events-auto bg-white/70 dark:bg-stone-900/70 backdrop-blur-2xl border border-white/40 dark:border-white/5 shadow-[0_8px_32px_rgba(0,0,0,0.05)] rounded-full px-3 py-2 flex items-center gap-1 md:gap-4"
        >
          {/* Logo Pill */}
          <Link
            href={`/${locale}`}
            className="w-10 h-10 flex items-center justify-center rounded-full bg-stone-900 dark:bg-stone-50 text-white dark:text-stone-900 transition-transform hover:scale-105 active:scale-95 shadow-lg"
          >
            <span className="font-black text-xs tracking-tighter">dk</span>
          </Link>

          {/* Desktop Menu */}
          <div className="hidden md:flex items-center gap-1">
            {navItems.map((item) => (
              <Link
                key={item.name}
                href={item.href}
                className="px-5 py-2 text-[10px] font-black uppercase tracking-[0.2em] text-stone-500 hover:text-stone-900 dark:hover:text-stone-100 rounded-full transition-all"
              >
                {item.name}
              </Link>
            ))}
          </div>

          <div className="w-px h-4 bg-stone-200 dark:bg-white/10 mx-1 hidden md:block"></div>

          {/* Actions Pill */}
          <div className="flex items-center gap-1 bg-stone-100/50 dark:bg-white/5 rounded-full p-1">
            <Link
              href={locale === "en" ? pathname.replace(/^\/en/, "/de") : pathname.replace(/^\/de/, "/en")}
              className="w-8 h-8 flex items-center justify-center text-[10px] font-black text-stone-500 hover:text-stone-900 dark:hover:text-stone-100 rounded-full transition-colors"
            >
              {locale === "en" ? "DE" : "EN"}
            </Link>
            <ThemeToggle />
            
            {/* Mobile Menu Toggle */}
            <button
              onClick={() => setIsOpen(!isOpen)}
              className="w-8 h-8 flex md:hidden items-center justify-center text-stone-600 dark:text-stone-400 hover:bg-white dark:hover:bg-stone-800 rounded-full transition-colors shadow-sm"
            >
              {isOpen ? <X size={14} /> : <Menu size={14} />}
            </button>
          </div>
        </motion.nav>
      </div>

      {/* Mobile Menu Overlay */}
      <AnimatePresence>
        {isOpen && (
          <motion.div
            initial={{ opacity: 0, y: 10, scale: 0.98 }}
            animate={{ opacity: 1, y: 0, scale: 1 }}
            exit={{ opacity: 0, y: 10, scale: 0.98 }}
            className="fixed top-24 left-6 right-6 z-40 bg-white/90 dark:bg-stone-900/95 backdrop-blur-3xl border border-white/40 dark:border-white/10 rounded-[2.5rem] shadow-2xl p-6 md:hidden overflow-hidden"
          >
            <div className="flex flex-col gap-3">
              {navItems.map((item) => (
                <Link
                  key={item.name}
                  href={item.href}
                  onClick={() => setIsOpen(false)}
                  className="px-6 py-4 text-sm font-black uppercase tracking-[0.2em] text-stone-900 dark:text-stone-100 bg-stone-50 dark:bg-white/5 rounded-2xl transition-colors hover:bg-liquid-mint/10"
                >
                  {item.name}
                </Link>
              ))}
            </div>
          </motion.div>
        )}
      </AnimatePresence>
    </>
  );
};

export default Header;