"use client";

import Image from "next/image";
import Link from "next/link";
import { useEffect, useState } from "react";
import { cartCount } from "@/lib/cart";
import { parentCategories } from "@/lib/data";
import { SITE } from "@/lib/site";
import { IconCart, IconChevron, IconClose, IconMenu, IconUser } from "./Icons";
import { SearchBox } from "./SearchBox";

const nav = [
  { name: "فروش ویژه", href: "#special-sale" },
  { name: "درباره ما", href: "/aboutus" },
  { name: "سوالات متداول", href: "/frequently-asked-questions" },
  { name: "تماس با ما", href: "/contactus" },
];

export function Header() {
  const [open, setOpen] = useState(false);
  const [mega, setMega] = useState(false);
  const [count, setCount] = useState(0);

  useEffect(() => {
    const sync = () => setCount(cartCount());
    sync();
    window.addEventListener("cart-updated", sync);
    window.addEventListener("storage", sync);
    return () => {
      window.removeEventListener("cart-updated", sync);
      window.removeEventListener("storage", sync);
    };
  }, []);

  return (
    <header className="sticky top-0 z-50 bg-white border-b border-black/5">
      <div className="container-site flex h-[76px] items-center gap-4">
        <button
          type="button"
          className="lg:hidden grid place-items-center w-10 h-10 text-ink"
          aria-label="منو"
          onClick={() => setOpen(true)}
        >
          <IconMenu />
        </button>

        <Link href="/" className="shrink-0">
          <Image src="/images/logo/logo.png" alt={SITE.nameFa} width={150} height={40} className="h-10 w-auto" priority />
        </Link>

        <nav className="hidden lg:flex items-center gap-1 mr-4 text-sm">
          <div
            className="relative"
            onMouseEnter={() => setMega(true)}
            onMouseLeave={() => setMega(false)}
          >
            <Link
              href="/products"
              className="flex items-center gap-1 px-3 py-2 rounded-lg font-medium hover:text-brand"
            >
              محصولات
              <IconChevron className="w-3.5 h-3.5 -rotate-90" />
            </Link>
            {mega && (
              <div className="absolute top-full right-0 w-[760px] rounded-2xl bg-white border border-black/5 shadow-xl p-5 grid grid-cols-4 gap-5">
                {parentCategories.map((cat) => (
                  <div key={cat.slug}>
                    <Link href={`/products/${cat.slug}`} className="block mb-3 text-sm font-bold text-brand">
                      {cat.name}
                    </Link>
                    <ul className="space-y-1.5">
                      {cat.children.slice(0, 8).map((child) => (
                        <li key={child.slug}>
                          <Link
                            href={`/products/${child.slug}`}
                            className="block text-[13px] text-zinc-600 hover:text-ink"
                          >
                            {child.name}
                          </Link>
                        </li>
                      ))}
                    </ul>
                  </div>
                ))}
              </div>
            )}
          </div>
          {nav.map((item) => (
            <Link key={item.href} href={item.href} className="px-3 py-2 rounded-lg hover:text-brand">
              {item.name}
            </Link>
          ))}
        </nav>

        <SearchBox className="hidden md:block ms-4 max-w-sm flex-1 rounded-full bg-zinc-100 px-3" />

        <div className="flex items-center gap-2 ms-auto">
          <a
            href={SITE.customerUrl}
            className="flex items-center gap-2 rounded-full px-3 py-2 text-sm hover:bg-zinc-100"
          >
            <IconUser />
            <span className="hidden sm:inline">ورود / ثبت نام</span>
          </a>
          <Link href="/cart" className="relative grid place-items-center w-10 h-10 rounded-full hover:bg-zinc-100">
            <IconCart className="w-6 h-6 text-brand" />
            <span className="absolute top-1 left-1 grid place-items-center w-4 h-4 rounded-full bg-brand text-[10px] text-white">
              {count.toLocaleString("fa-IR")}
            </span>
          </Link>
        </div>
      </div>

      {open && (
        <div className="fixed inset-0 z-50 lg:hidden">
          <button className="absolute inset-0 bg-black/40" aria-label="بستن" onClick={() => setOpen(false)} />
          <aside className="absolute inset-y-0 right-0 w-[86%] max-w-sm bg-white p-5 overflow-y-auto">
            <div className="flex items-center justify-between mb-6">
              <Image src="/images/logo/logo.png" alt={SITE.nameFa} width={130} height={36} className="h-9 w-auto" />
              <button type="button" aria-label="بستن منو" onClick={() => setOpen(false)}>
                <IconClose />
              </button>
            </div>
            <SearchBox className="mb-5 rounded-full bg-zinc-100 px-3" onNavigate={() => setOpen(false)} />
            <p className="text-xs text-zinc-400 mb-2">محصولات</p>
            <div className="space-y-4 mb-6">
              {parentCategories.map((cat) => (
                <div key={cat.slug}>
                  <Link href={`/products/${cat.slug}`} className="font-bold text-brand" onClick={() => setOpen(false)}>
                    {cat.name}
                  </Link>
                  <ul className="mt-2 grid grid-cols-2 gap-1">
                    {cat.children.slice(0, 6).map((child) => (
                      <li key={child.slug}>
                        <Link href={`/products/${child.slug}`} className="text-sm text-zinc-600" onClick={() => setOpen(false)}>
                          {child.name}
                        </Link>
                      </li>
                    ))}
                  </ul>
                </div>
              ))}
            </div>
            <div className="flex flex-col gap-2 border-t border-black/5 pt-4">
              {nav.map((item) => (
                <Link key={item.href} href={item.href} className="py-2" onClick={() => setOpen(false)}>
                  {item.name}
                </Link>
              ))}
              <a href={SITE.customerUrl} className="py-2">
                ورود / ثبت نام
              </a>
            </div>
          </aside>
        </div>
      )}
    </header>
  );
}