"use client";

import { motion, AnimatePresence, useScroll } from "framer-motion";
import { useState, useEffect } from "react";
import Link from "next/link";
import { usePathname } from "next/navigation";
import type { Locale } from "@/i18n-config";

const expo = [0.16, 1, 0.3, 1] as [number, number, number, number];

export default function Header({ lang, dict }: { lang: Locale; dict: any }) {
  const [menuOpen, setMenuOpen] = useState(false);
  const [scrolled, setScrolled] = useState(false);
  const pathname = usePathname();

  const { scrollY } = useScroll();

  useEffect(() => {
    const unsub = scrollY.on("change", (v) => setScrolled(v > 40));
    return () => unsub();
  }, [scrollY]);

  const links = [
    { name: dict.services, href: `/${lang}/services` },
    { name: dict.work,     href: `/${lang}/work` },
    { name: dict.process,  href: `/${lang}/process` },
    { name: dict.blog,     href: `/${lang}/blog` },
    { name: dict.partners, href: `/${lang}/partners` },
    { name: dict.faq,      href: `/${lang}/faq` },
  ];

  const otherLang = lang === "tr" ? "en" : "tr";

  return (
    <>
      <motion.header
        className={`fixed top-0 left-0 right-0 z-50 transition-all duration-300 ${
          scrolled
            ? "bg-[#F4F0E8]/90 backdrop-blur-md border-b border-[#C8C2B8]"
            : "bg-transparent"
        }`}
        initial={{ y: -80, opacity: 0 }}
        animate={{ y: 0, opacity: 1 }}
        transition={{ duration: 0.8, ease: expo }}
      >
        <div className="max-w-7xl mx-auto px-6 h-16 flex items-center justify-between">

          {/* Logo */}
          <Link href={`/${lang}`} className="flex items-center gap-3 cursor-pointer group">
            <div className="w-8 h-8 bg-[#FFE600] border-2 border-[#0A0A0A] flex items-center justify-center font-display font-black text-[13px] text-[#0A0A0A] group-hover:bg-[#FF4500] transition-colors duration-200">
              A
            </div>
            <span className="font-display font-black tracking-tight text-[15px] text-[#0A0A0A] uppercase">
              {dict.brandName}<span className="text-[#A0998E] font-medium">{dict.brandSub}</span>
            </span>
          </Link>

          {/* Desktop nav */}
          <nav className="hidden md:flex items-center gap-8">
            {links.map(item => {
              const isActive = pathname === item.href;
              return (
                <Link
                  key={item.name}
                  href={item.href}
                  className={`font-mono text-[10px] tracking-[0.2em] uppercase transition-colors duration-200 ${
                    isActive ? "text-[#0A0A0A] font-bold" : "text-[#A0998E] hover:text-[#0A0A0A]"
                  }`}
                >
                  {item.name}
                </Link>
              );
            })}
          </nav>

          {/* Right: lang + CTA */}
          <div className="hidden md:flex items-center gap-4">
            <Link
              href={pathname.replace(`/${lang}`, `/${otherLang}`)}
              className="font-mono text-[10px] tracking-[0.2em] uppercase text-[#A0998E] hover:text-[#0A0A0A] transition-colors duration-200 border border-[#C8C2B8] hover:border-[#0A0A0A] px-3 py-2"
            >
              {otherLang.toUpperCase()}
            </Link>
            <Link
              href={`/${lang}/contact`}
              className="btn-brutal btn-brutal-yellow flex items-center gap-2 px-5 py-2.5 font-display font-black text-[11px] tracking-widest uppercase cursor-pointer"
            >
              {dict.quote}
            </Link>
          </div>

          {/* Mobile hamburger */}
          <button
            className="md:hidden flex flex-col justify-center items-center gap-1.5 w-10 h-10 cursor-pointer border border-[#C8C2B8] hover:border-[#0A0A0A] transition-colors"
            onClick={() => setMenuOpen(!menuOpen)}
            aria-label="Toggle Menu"
          >
            <motion.span
              className="h-[1.5px] w-5 bg-[#0A0A0A] block"
              animate={{ rotate: menuOpen ? 45 : 0, y: menuOpen ? 4.5 : 0 }}
              transition={{ duration: 0.2 }}
            />
            <motion.span
              className="h-[1.5px] w-5 bg-[#0A0A0A] block"
              animate={{ opacity: menuOpen ? 0 : 1, scaleX: menuOpen ? 0 : 1 }}
              transition={{ duration: 0.2 }}
            />
            <motion.span
              className="h-[1.5px] w-5 bg-[#0A0A0A] block"
              animate={{ rotate: menuOpen ? -45 : 0, y: menuOpen ? -4.5 : 0 }}
              transition={{ duration: 0.2 }}
            />
          </button>
        </div>
      </motion.header>

      {/* Mobile menu overlay */}
      <AnimatePresence>
        {menuOpen && (
          <motion.div
            className="fixed inset-0 z-40 bg-[#F4F0E8] flex flex-col"
            initial={{ clipPath: "inset(0 0 100% 0)" }}
            animate={{ clipPath: "inset(0 0 0% 0)" }}
            exit={{ clipPath: "inset(0 0 100% 0)" }}
            transition={{ duration: 0.5, ease: expo }}
          >
            <div className="max-w-7xl mx-auto px-6 pt-20 pb-12 flex flex-col h-full">
              <nav className="flex flex-col gap-1 flex-1 justify-center">
                {links.map((item, idx) => (
                  <motion.div
                    key={item.name}
                    initial={{ x: -30, opacity: 0 }}
                    animate={{ x: 0, opacity: 1 }}
                    exit={{ x: -30, opacity: 0 }}
                    transition={{ delay: idx * 0.07, duration: 0.4 }}
                  >
                    <Link
                      href={item.href}
                      className="block font-display font-black text-5xl uppercase text-[#C8C2B8] hover:text-[#0A0A0A] transition-colors duration-200 py-2"
                      onClick={() => setMenuOpen(false)}
                    >
                      {item.name}
                    </Link>
                  </motion.div>
                ))}
              </nav>

              <div className="border-t border-[#C8C2B8] pt-8">
                <Link
                  href={`/${lang}/contact`}
                  className="btn-brutal btn-brutal-yellow inline-flex items-center gap-3 px-8 py-4 font-display font-black text-[13px] tracking-widest uppercase cursor-pointer"
                  onClick={() => setMenuOpen(false)}
                >
                  {dict.quote}
                </Link>
              </div>
            </div>
          </motion.div>
        )}
      </AnimatePresence>
    </>
  );
}