'use client';

import React, { useEffect, useMemo, useState } from 'react';
import Link from 'next/link';
import { useParams } from 'next/navigation';
import { AnnouncementBar } from '@/layout/AnnouncementBar';
import { Header } from '@/layout/Header';
import { Navbar } from '@/layout/Navbar';
import { Footer } from '@/layout/Footer';
import { StickyHeaderSpacer } from '@/components/StickyHeaderSpacer';
import { FloatingButtons } from '@/components/FloatingButtons';
import { FaqCategoryPage } from '@/components/faq/FaqPageView';
import { storefrontService } from '@/services/api/storefrontService';
import { parseFaqPageData } from '@/lib/faqPageLayout';
import {
  DEFAULT_FAQ_PAGE,
  matchFaqCategory,
  type FaqPageData,
} from '@/lib/faqDefaults';

export default function FaqCategoryRoutePage() {
  const params = useParams<{ category: string }>();
  const slug = String(params?.category || '');
  const [data, setData] = useState<FaqPageData>(DEFAULT_FAQ_PAGE);

  useEffect(() => {
    let cancelled = false;
    storefrontService.getFaqLayout().then((raw) => {
      if (!cancelled) setData(parseFaqPageData(raw));
    });
    return () => {
      cancelled = true;
    };
  }, []);

  const category = useMemo(
    () => matchFaqCategory(data.categories, slug),
    [data.categories, slug]
  );

  return (
    <div className="min-h-screen bg-[#F8F9FB] text-[#1E293B] flex flex-col font-sans">
      <AnnouncementBar />
      <Header />
      <StickyHeaderSpacer />
      <Navbar />
      <main className="flex-grow py-10 pb-20">
        <div className="container mx-auto px-4 sm:px-6 lg:px-8 max-w-[1400px]">
          {category ? (
            <FaqCategoryPage data={data} category={category} />
          ) : (
            <div className="bg-white border border-gray-200 rounded-2xl p-10 text-center max-w-lg mx-auto">
              <h1 className="text-lg font-bold text-[#1E293B]">FAQ category not found</h1>
              <p className="text-[13px] text-gray-500 mt-2 mb-6">
                This category is missing or no longer published.
              </p>
              <Link
                href="/faqs"
                className="inline-flex items-center justify-center h-10 px-5 rounded-lg bg-primary text-white text-[13px] font-semibold hover:bg-primary-hover"
              >
                Browse all FAQs
              </Link>
            </div>
          )}
        </div>
      </main>
      <Footer />
      <FloatingButtons />
    </div>
  );
}