"use client";

import Link from "next/link";
import { useState } from "react";
import { SearchBox } from "@/components/SearchBox";
import { navLinks } from "@/data/content";
import type { MegaColumn } from "@/lib/catalog";
import { CUSTOMER_URL } from "@/lib/site";
import { IconBag, IconChevronDown, IconClose, IconHeart, IconMenu, IconUser } from "./Icons";

type Props = {
  categories?: MegaColumn[];
};

export function Header({ categories = [] }: Props) {
  const [open, setOpen] = useState(false);
  const [mega, setMega] = useState(false);
  const [mobileCats, setMobileCats] = useState(false);

  const closeAll = () => {
    setOpen(false);
    setMega(false);
    setMobileCats(false);
  };

  return (
    <header className="sticky top-0 z-40 border-b border-white/50 bg-white/40 backdrop-blur-2xl">
      <div className="container-nn">
        <div className="flex h-[72px] items-center gap-3">
          <button
            type="button"
            className="text-ink lg:hidden"
            onClick={() => setOpen((value) => !value)}
            aria-label={open ? "بستن منو" : "باز کردن منو"}
          >
            {open ? <IconClose /> : <IconMenu />}
          </button>

          <Link href="/" className="flex items-center gap-2.5">
            <span className="grid size-11 place-items-center rounded-2xl bg-linear-to-br from-purple-600 via-cyan-500 to-rose-500 text-white shadow-card">
              <span className="font-display text-lg leading-none">NN</span>
            </span>
            <span className="leading-tight">
              <span className="font-display block text-[15px] text-purple-700">Nini Naderi</span>
              <span className="block text-sm font-bold text-ink">نینی نادری</span>
            </span>
          </Link>

          <SearchBox
            className="mx-auto hidden min-w-0 flex-1 max-w-xl md:block"
            inputClassName="h-11 w-full rounded-full border border-line bg-purple-50/60 pr-4 pl-11 text-sm outline-none transition focus:border-purple-500 focus:bg-white"
          />

          <div className="ms-auto flex items-center gap-1 sm:gap-2">
            <a
              href={CUSTOMER_URL}
              className="grid size-10 place-items-center rounded-full text-ink hover:bg-purple-50 lg:hidden"
              aria-label="ورود"
            >
              <IconUser />
            </a>
            <a
              href={CUSTOMER_URL}
              className="hidden items-center gap-1.5 rounded-full px-3 py-2 text-sm text-ink hover:bg-purple-50 lg:inline-flex"
            >
              <IconUser />
              ورود
            </a>
            <a
              href={CUSTOMER_URL}
              className="relative grid size-10 place-items-center rounded-full text-ink hover:bg-purple-50"
              aria-label="علاقه‌مندی"
            >
              <IconHeart />
            </a>
            <a
              href={CUSTOMER_URL}
              className="relative grid size-10 place-items-center rounded-full text-ink hover:bg-purple-50"
              aria-label="سبد خرید"
            >
              <IconBag />
            </a>
          </div>
        </div>

        <div className="pb-3 md:hidden">
          <SearchBox
            placeholder="جستجو در نینی نادری"
            inputClassName="h-10 w-full rounded-full border border-line bg-purple-50/60 pr-4 pl-10 text-sm outline-none"
            onNavigate={closeAll}
          />
        </div>

        <nav className="relative hidden h-12 items-center gap-6 text-sm font-medium text-ink lg:flex">
          <div
            className="h-full"
            onMouseEnter={() => setMega(true)}
            onMouseLeave={() => setMega(false)}
          >
            <button
              type="button"
              className="relative flex h-full items-center gap-1 py-3 transition hover:text-purple-700"
              aria-expanded={mega}
              onClick={() => setMega((value) => !value)}
            >
              دسته‌بندی‌ها
              <IconChevronDown className={`size-4 transition ${mega ? "rotate-180" : ""}`} />
            </button>
            {mega ? <MegaMenu categories={categories} onPick={closeAll} /> : null}
          </div>
          {navLinks.map((link) => (
            <Link
              key={link.label}
              href={link.href}
              className="relative py-3 transition hover:text-purple-700 after:absolute after:right-0 after:bottom-1 after:h-0.5 after:w-0 after:bg-linear-to-l after:from-purple-600 after:to-cyan-500 after:transition-all hover:after:w-full"
            >
              {link.label}
            </Link>
          ))}
        </nav>
      </div>

      {open ? (
        <div className="border-t border-line bg-white lg:hidden">
          <nav className="container-nn flex flex-col py-2 text-sm">
            <button
              type="button"
              className="flex items-center justify-between border-b border-line/70 py-3 text-ink"
              onClick={() => setMobileCats((value) => !value)}
            >
              دسته‌بندی‌ها
              <IconChevronDown className={`size-4 transition ${mobileCats ? "rotate-180" : ""}`} />
            </button>
            {mobileCats ? (
              <div className="space-y-3 border-b border-line/70 py-3">
                {categories.map((column) => (
                  <div key={column.id}>
                    <Link href={column.href} onClick={closeAll} className="block text-sm font-bold text-purple-700">
                      {column.name}
                    </Link>
                    {column.children.length ? (
                      <div className="mt-2 grid grid-cols-2 gap-2">
                        {column.children.map((child) => (
                          <Link
                            key={child.id}
                            href={child.href}
                            onClick={closeAll}
                            className="rounded-2xl bg-purple-50/70 px-3 py-2 text-xs font-bold"
                          >
                            {child.name}
                          </Link>
                        ))}
                      </div>
                    ) : null}
                  </div>
                ))}
              </div>
            ) : null}
            {navLinks.map((link) => (
              <Link
                key={link.label}
                href={link.href}
                onClick={closeAll}
                className="border-b border-line/70 py-3 text-ink"
              >
                {link.label}
              </Link>
            ))}
            <a href={CUSTOMER_URL} onClick={closeAll} className="py-3 text-ink">
              ورود / ثبت نام
            </a>
          </nav>
        </div>
      ) : null}
    </header>
  );
}

function MegaMenu({ categories, onPick }: { categories: MegaColumn[]; onPick: () => void }) {
  return (
    <div className="absolute top-full right-0 z-50 w-[min(52rem,calc(100vw-2rem))] pt-2">
      <div className="rounded-3xl border border-white/80 bg-white/95 p-5 shadow-card backdrop-blur-[80px]">
        <div className="mb-4 flex items-end justify-between">
          <div>
            <p className="font-display text-xs text-cyan-600">Categories</p>
            <p className="text-base font-bold">خرید بر اساس دسته</p>
          </div>
          <Link href="/products" onClick={onPick} className="text-xs font-medium text-purple-700">
            مشاهده همه
          </Link>
        </div>
        {categories.length ? (
          <div className="grid gap-5 sm:grid-cols-2 lg:grid-cols-3">
            {categories.map((column) => (
              <div key={column.id}>
                <Link
                  href={column.href}
                  onClick={onPick}
                  className="block text-sm font-bold text-purple-700 hover:text-purple-800"
                >
                  {column.name}
                </Link>
                {column.children.length ? (
                  <ul className="mt-2 space-y-1.5">
                    {column.children.map((child) => (
                      <li key={child.id}>
                        <Link
                          href={child.href}
                          onClick={onPick}
                          className="block rounded-xl px-2 py-1 text-sm text-muted transition hover:bg-purple-50 hover:text-ink"
                        >
                          {child.name}
                        </Link>
                      </li>
                    ))}
                  </ul>
                ) : null}
              </div>
            ))}
          </div>
        ) : (
          <p className="text-sm text-muted">دسته‌بندی‌ها به‌زودی اینجا می‌آیند.</p>
        )}
      </div>
    </div>
  );
}