"use client";

import { useState, useEffect } 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-6 left-0 right-0 z-50 flex justify-center px-4 pointer-events-none">
        <motion.nav
          initial={{ y: -100, opacity: 0 }}
          animate={{ y: 0, opacity: 1 }}
          transition={{ duration: 0.5, ease: "easeOut" }}
          className="pointer-events-auto bg-white/80 dark:bg-stone-900/80 backdrop-blur-xl border border-stone-200/50 dark:border-stone-800/50 shadow-lg rounded-full px-2 py-2 flex items-center gap-2"
        >
          {/* Logo / Home Button */}
          <Link
            href={`/${locale}`}
            className="w-10 h-10 flex items-center justify-center rounded-full bg-stone-100 dark:bg-stone-800 hover:bg-stone-200 dark:hover:bg-stone-700 transition-colors font-bold text-stone-900 dark:text-stone-100"
          >
            dk
          </Link>

          {/* Desktop Nav Items */}
          <div className="hidden md:flex items-center gap-1 px-2">
            {navItems.map((item) => (
              <Link
                key={item.name}
                href={item.href}
                className="px-4 py-2 text-sm font-medium text-stone-600 dark:text-stone-400 hover:text-stone-900 dark:hover:text-stone-100 hover:bg-stone-100 dark:hover:bg-stone-800/50 rounded-full transition-all"
              >
                {item.name}
              </Link>
            ))}
          </div>

          <div className="w-px h-6 bg-stone-200 dark:bg-stone-800 mx-1 hidden md:block"></div>

          {/* Actions */}
          <div className="flex items-center gap-1">
            <Link
              href={locale === "en" ? pathname.replace(/^\/en/, "/de") : pathname.replace(/^\/de/, "/en")}
              className="w-9 h-9 flex items-center justify-center text-xs font-bold text-stone-600 dark:text-stone-400 hover:bg-stone-100 dark:hover:bg-stone-800 rounded-full transition-colors"
            >
              {locale === "en" ? "DE" : "EN"}
            </Link>
            <ThemeToggle />
            
            {/* Mobile Menu Button */}
            <button
              onClick={() => setIsOpen(!isOpen)}
              className="w-9 h-9 flex md:hidden items-center justify-center text-stone-600 dark:text-stone-400 hover:bg-stone-100 dark:hover:bg-stone-800 rounded-full transition-colors"
            >
              {isOpen ? <X size={18} /> : <Menu size={18} />}
            </button>
          </div>
        </motion.nav>
      </div>

      {/* Mobile Menu Overlay */}
      <AnimatePresence>
        {isOpen && (
          <motion.div
            initial={{ opacity: 0, scale: 0.95, y: -20 }}
            animate={{ opacity: 1, scale: 1, y: 0 }}
            exit={{ opacity: 0, scale: 0.95, y: -20 }}
            className="fixed top-20 left-4 right-4 z-40 bg-white dark:bg-stone-900 border border-stone-200 dark:border-stone-800 rounded-3xl shadow-2xl p-4 md:hidden"
          >
            <div className="flex flex-col gap-2">
              {navItems.map((item) => (
                <Link
                  key={item.name}
                  href={item.href}
                  onClick={() => setIsOpen(false)}
                  className="px-4 py-3 text-lg font-medium text-stone-900 dark:text-stone-100 bg-stone-50 dark:bg-stone-800/50 rounded-xl"
                >
                  {item.name}
                </Link>
              ))}
            </div>
          </motion.div>
        )}
      </AnimatePresence>
    </>
  );
};

export default Header;