'use client';

import React, { useEffect, useMemo, useState } from 'react';
import Link from 'next/link';
import { Clock, Package, RefreshCw, ShieldCheck, Undo2 } from 'lucide-react';
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 {
  storefrontService,
  type FooterInfo,
  type StorefrontSettings,
  MOCK_FOOTER_INFO,
} from '@/services/api/storefrontService';
import { buildReturnsDoc } from '@/lib/returnsContent';

const HIGHLIGHT_ICONS = {
  window: Clock,
  doa: Package,
  refund: RefreshCw,
  warranty: ShieldCheck,
} as const;

function telHref(phone: string): string {
  return `tel:${phone.replace(/[^\d+]/g, '')}`;
}

export default function ReturnsPage() {
  const [footer, setFooter] = useState<FooterInfo>(MOCK_FOOTER_INFO);
  const [settings, setSettings] = useState<StorefrontSettings>({ store_name: 'iFixKart' });

  useEffect(() => {
    let cancelled = false;
    Promise.all([
      storefrontService.getFooterInfo(),
      storefrontService.getSettings(),
    ]).then(([info, store]) => {
      if (cancelled) return;
      if (info) setFooter(info);
      if (store) setSettings(store);
    });
    return () => {
      cancelled = true;
    };
  }, []);

  const storeName = settings.store_name || 'iFixKart';
  const phone = footer.phone || settings.support_phone || '';
  const email = footer.email || '';
  const doc = useMemo(() => buildReturnsDoc(storeName), [storeName]);

  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-[900px]">
          <h1 className="text-[28px] md:text-[32px] font-bold text-[#1E293B]">
            {doc.heading}
          </h1>
          <p className="text-[14px] text-gray-500 mt-2 max-w-2xl">{doc.intro}</p>

          <div className="grid grid-cols-1 sm:grid-cols-2 gap-4 mt-8">
            {doc.highlights.map((item) => {
              const Icon =
                HIGHLIGHT_ICONS[item.id as keyof typeof HIGHLIGHT_ICONS] || Undo2;
              return (
                <div
                  key={item.id}
                  className="bg-white border border-gray-200 rounded-xl p-5"
                >
                  <div className="w-10 h-10 rounded-lg bg-primary/10 text-primary flex items-center justify-center mb-3">
                    <Icon className="w-5 h-5" />
                  </div>
                  <h2 className="text-[16px] font-bold text-[#1E293B]">{item.title}</h2>
                  <p className="text-[13px] text-gray-500 mt-1 leading-relaxed">
                    {item.detail}
                  </p>
                </div>
              );
            })}
          </div>

          <article className="mt-8 bg-white border border-gray-200 rounded-xl overflow-hidden">
            <div className="p-6 md:p-8">
              <div className="flex items-center gap-2 text-primary mb-6">
                <Undo2 className="w-5 h-5" />
                <p className="text-[13px] font-semibold">
                  Approved pickups need an original invoice. Last updated: 11 September 2026
                </p>
              </div>

              <div className="space-y-7">
                {doc.sections.map((section) => (
                  <section key={section.id} id={section.id}>
                    <h3 className="text-[16px] font-bold text-[#1E293B] mb-2">
                      {section.title}
                    </h3>
                    {section.paragraphs.map((p, i) => (
                      <p
                        key={i}
                        className="text-[14px] text-gray-600 leading-relaxed mb-3 last:mb-0"
                      >
                        {p}
                      </p>
                    ))}
                  </section>
                ))}
              </div>

              <section className="mt-8 pt-6 border-t border-gray-100">
                <div className="flex items-center gap-2 mb-2">
                  <RefreshCw className="w-4 h-4 text-gray-400" />
                  <h3 className="text-[16px] font-bold text-[#1E293B]">Need help with a return?</h3>
                </div>
                <p className="text-[14px] text-gray-600 leading-relaxed">
                  Write to{' '}
                  <a
                    href="mailto:returns@ifixkart.com"
                    className="text-primary font-semibold hover:underline"
                  >
                    returns@ifixkart.com
                  </a>{' '}
                  with your order number. You can also read{' '}
                  <Link href="/faqs" className="text-primary font-semibold hover:underline">
                    FAQs
                  </Link>
                  ,{' '}
                  <Link href="/payments" className="text-primary font-semibold hover:underline">
                    Payments
                  </Link>
                  , or our{' '}
                  <Link href="/terms" className="text-primary font-semibold hover:underline">
                    Terms &amp; Policy
                  </Link>
                  .
                </p>
                <div className="mt-3 text-[14px] text-[#1E293B] space-y-1">
                  {email ? (
                    <p>
                      Support:{' '}
                      <a
                        href={`mailto:${email}`}
                        className="text-primary font-semibold hover:underline"
                      >
                        {email}
                      </a>
                    </p>
                  ) : null}
                  {phone ? (
                    <p>
                      Phone:{' '}
                      <a
                        href={telHref(phone)}
                        className="text-primary font-semibold hover:underline"
                      >
                        {phone}
                      </a>
                    </p>
                  ) : null}
                  <p className="text-gray-500">Monday to Saturday, 10:00 AM – 6:30 PM</p>
                </div>
              </section>
            </div>
          </article>
        </div>
      </main>

      <Footer />
      <FloatingButtons />
    </div>
  );
}