import {useEffect, useState, type ReactNode} from 'react';
import {PlaceCategory, selectPublishable} from '@o2o/shared';
import {useSite} from '@site/lib/site-context';
import {
  bookingActionLabel,
  bookingLinks,
  channelLabel,
  isSectionEnabled,
  publicLinks,
  stayBookingView,
} from '@site/lib/derive';
import {isoDate, naverDirectionsUrl} from '@site/lib/format';
import {SongPlayer} from '@site/sections/SongPlayer';
import {BookingForm} from '../paper/BookingForm';
import {BOOK_EVENT} from '../paper/Rooms';
import {Sheet} from '../paper/Sheet';
import {MapIcon, PhoneIcon, TalkIcon} from './icons';
import '../kit/kit.css';
import './cinema.css';

const HOUSE_WORD: Record<number, string> = {
  [PlaceCategory.LODGING]: '펜션',
  [PlaceCategory.CAFE]: '카페',
  [PlaceCategory.RESTAURANT]: '가게',
  [PlaceCategory.CLINIC]: '병원',
};

type PageId = 'home' | 'area' | 'stay' | 'story';

const PAGE_HEAD: Record<Exclude<PageId, 'home'>, {label: string; title: string; note: string}> = {
  area: {
    label: 'AREA',
    title: '지역 소개',
    note: '대문에서 걸어 닿는 자리와, 이 도시가 남긴 이야기입니다.',
  },
  stay: {
    label: 'STAY',
    title: '이용안내 · 예약',
    note: '상세 안내와 요금, 예약하는 방법입니다.',
  },
  story: {
    label: 'STORY',
    title: '이야기',
    note: '사장님이 남기는 글과 다녀가신 분들의 후기, 그리고 엽서 한 장입니다.',
  },
};

function pageOf(hash: string): PageId {
  const id = hash.replace(/^#\/?/, '');
  return id === 'area' || id === 'stay' || id === 'story' ? id : 'home';
}

function usePage(): PageId {
  const [page, setPage] = useState<PageId>('home');
  useEffect(() => {
    const sync = () => {
      const {hash} = window.location;
      if (hash && !hash.startsWith('#/')) return;
      setPage(pageOf(hash));
      window.scrollTo({top: 0, behavior: 'instant'});
    };
    sync();
    window.addEventListener('hashchange', sync);
    const again = (event: MouseEvent) => {
      const link = event.target instanceof Element ? event.target.closest('a[href^="#/"]') : null;
      const href = link?.getAttribute('href');
      if (href && pageOf(href) === pageOf(window.location.hash)) window.scrollTo({top: 0, behavior: 'instant'});
    };
    document.addEventListener('click', again);
    return () => {
      window.removeEventListener('hashchange', sync);
      document.removeEventListener('click', again);
    };
  }, []);
  return page;
}

function useScrolled(): boolean {
  const [scrolled, setScrolled] = useState(false);
  useEffect(() => {
    const sync = () => setScrolled(window.scrollY > 40);
    sync();
    window.addEventListener('scroll', sync, {passive: true});
    return () => window.removeEventListener('scroll', sync);
  }, []);
  return scrolled;
}

export function Frame({children}: {children: ReactNode}) {
  const payload = useSite();
  const {place, site} = payload;
  const page = usePage();
  const scrolled = useScrolled();
  const [menuOpen, setMenuOpen] = useState(false);
  const [bookingOpen, setBookingOpen] = useState(false);
  useEffect(() => {
    const open = () => setBookingOpen(true);
    window.addEventListener(BOOK_EVENT, open);
    return () => window.removeEventListener(BOOK_EVENT, open);
  }, []);
  useEffect(() => setMenuOpen(false), [page]);

  const tabs: {label: string; page: PageId}[] = [
    {label: `${HOUSE_WORD[place.category] ?? '가게'} 소개`, page: 'home'},
  ];
  if (isSectionEnabled(payload, 'local')) tabs.push({label: '지역 소개', page: 'area'});
  tabs.push({label: '이용안내 · 예약', page: 'stay'});
  tabs.push({label: '이야기', page: 'story'});

  const booking = bookingLinks(payload)[0];
  const stayBooking = place.category === PlaceCategory.LODGING ? stayBookingView(payload) : null;
  const kakao = payload.links.find((link) => link.confirmed && /kakao/i.test(link.url));
  const address = place.roadAddress ?? place.address;
  const hasSongs = (payload.songs ?? []).some((song) => song.audioUrl);
  const facts = selectPublishable(payload.facts);
  const fact = (key: string) => facts.find((f) => f.key === key)?.value ?? undefined;
  const hours = [
    fact('check_in_time') && `체크인 ${fact('check_in_time')}`,
    fact('check_out_time') && `체크아웃 ${fact('check_out_time')}`,
    fact('smoking') === 'false' && '전 구역 금연',
  ].filter(Boolean);
  const channels = publicLinks(payload);
  const instagram = channels.find((link) => /instagram\.com/i.test(link.url));
  const areaPills = (
    [
      ['주변 명소', '#walk', payload.local.attractions.length > 0],
      ['주변 맛집', '#eat', payload.local.restaurants.length > 0],
      ['엽서', '#/story', true],
      ['축제', '#festival', isSectionEnabled(payload, 'festival') && payload.local.festivals.length > 0],
      ['일정', '#itinerary', isSectionEnabled(payload, 'itinerary')],
      ['이야기', '#story', isSectionEnabled(payload, 'story')],
      ['날씨', '#/', isSectionEnabled(payload, 'weather')],
    ] as [string, string, boolean][]
  ).filter(([, , on]) => on);

  const barItems = [address ? 'map' : null, kakao ? 'talk' : null, place.phone ? 'tel' : null].filter(Boolean);
  const hasCta = Boolean(stayBooking || booking);
  const showBar = barItems.length > 0 || hasCta;
  const columns = [...barItems.map(() => '1fr'), ...(hasCta ? ['1.7fr'] : [])].join(' ');

  const cta = stayBooking ? (
    <button type="button" className="cta" onClick={() => setBookingOpen(true)}>
      예약하기
    </button>
  ) : (
    booking && (
      <a className="cta" href={booking.url} target="_blank" rel="noopener noreferrer">
        {bookingActionLabel(booking)}
      </a>
    )
  );

  return (
    <div className="w4-cinema" data-page={page}>
      <header className={scrolled || page !== 'home' || menuOpen ? 'top solid' : 'top'}>
        <div className="wrap">
          <a className="logo" href="#/">
            {place.name}
          </a>
          <nav className="dnav" aria-label="페이지">
            {tabs.map((tab) => (
              <a
                key={tab.page}
                href={tab.page === 'home' ? '#/' : `#/${tab.page}`}
                className={tab.page === page ? 'on' : undefined}
              >
                {tab.label}
              </a>
            ))}
          </nav>
          <div className="hd-cta">
            {place.phone && (
              <a className="hd-tel" href={`tel:${place.phone}`}>
                <PhoneIcon />
                {place.phone}
              </a>
            )}
            {cta}
          </div>
          <button
            type="button"
            className="menu"
            aria-label="메뉴"
            aria-expanded={menuOpen}
            onClick={() => setMenuOpen((was) => !was)}
          >
            <span />
          </button>
        </div>
        <nav className="drawer glass" aria-label="주요 메뉴" hidden={!menuOpen}>
            {tabs.map((tab) => (
              <a
                key={tab.page}
                href={tab.page === 'home' ? '#/' : `#/${tab.page}`}
                aria-current={tab.page === page ? 'page' : undefined}
              >
                {tab.label}
              </a>
            ))}
        </nav>
      </header>

      <nav className="tabs" aria-label="페이지">
        {tabs.map((tab) => (
          <a
            key={tab.page}
            href={tab.page === 'home' ? '#/' : `#/${tab.page}`}
            className={tab.page === page ? 'on' : undefined}
          >
            {tab.label}
          </a>
        ))}
      </nav>

      {(Object.keys(PAGE_HEAD) as Exclude<PageId, 'home'>[]).map((id) => (
        <div key={id} data-pg={id}>
          <section className="wrap pagehead">
            <p className="label">{PAGE_HEAD[id].label}</p>
            <h2>
              {id === 'area'
                ? (place.addressLocality?.replace(/(시|군)$/, '') ?? PAGE_HEAD.area.title)
                : PAGE_HEAD[id].title}
            </h2>
            <p className="lead">{PAGE_HEAD[id].note}</p>
            {id === 'area' && areaPills.length > 0 && (
              <div className="pills">
                {areaPills.map(([label, href]) => (
                  <a key={href} className="pill" href={href}>
                    {label}
                  </a>
                ))}
              </div>
            )}
          </section>
        </div>
      ))}

      {children}

      {channels.length > 0 && (
        <div data-pg="stay">
          <section className="wrap" id="channels">
            <p className="label">CHANNELS</p>
            <h2>공식 채널</h2>
            <div className="rows">
              {channels.map((link) => (
                <a key={link.url} className="line" href={link.url} target="_blank" rel="noopener noreferrer">
                  <span>{channelLabel(link)}</span>
                  <span className="r">열기 ↗</span>
                </a>
              ))}
            </div>
          </section>
        </div>
      )}

      <footer>
        <div className="wrap">
          <p className="fname">{place.name}</p>
          {address && <p>{address}</p>}
          {hours.length > 0 && <p>{hours.join(' · ')}</p>}
          {(place.phone || instagram) && (
            <p>
              {place.phone && <a href={`tel:${place.phone}`}>{place.phone}</a>}
              {place.phone && instagram && ' · '}
              {instagram && (
                <a href={instagram.url} target="_blank" rel="noopener noreferrer">
                  instagram
                </a>
              )}
            </p>
          )}
          {place.legal?.businessRegistrationNumber && (
            <p>
              {place.legal.representative && `대표 ${place.legal.representative} · `}
              사업자등록번호 {place.legal.businessRegistrationNumber}
              {place.legal.mailOrderNumber && ` · 통신판매업신고 ${place.legal.mailOrderNumber}`}
            </p>
          )}
          <p className="byline credit">
            <span className="author">작성·운영 {place.name}</span> · 최종 업데이트{' '}
            <time dateTime={site.updatedAt}>{isoDate(site.updatedAt)}</time>
            <br />
            <a href="https://www.o2osolution.ai/" target="_blank" rel="noopener noreferrer">
              AI O2O
            </a>
            의 Web4Ai로 만든 사이트입니다.
          </p>
        </div>
      </footer>

      {hasSongs && (
        <div className={showBar ? 'player glass' : 'player glass low'}>
          <SongPlayer />
        </div>
      )}

      {showBar && (
        <nav className="tabbar glass" aria-label="연락 · 예약" style={{gridTemplateColumns: columns}}>
          {address && (
            <a href={naverDirectionsUrl(place.name, place.latitude, place.longitude)} target="_blank" rel="noopener noreferrer nofollow">
              <MapIcon />
              길찾기
            </a>
          )}
          {kakao && (
            <a href={kakao.url} target="_blank" rel="noopener noreferrer">
              <TalkIcon />
              카톡
            </a>
          )}
          {place.phone && (
            <a href={`tel:${place.phone}`}>
              <PhoneIcon />
              전화
            </a>
          )}
          {cta}
        </nav>
      )}

      {stayBooking && (
        <Sheet open={bookingOpen} onClose={() => setBookingOpen(false)} label="예약 요청" plain>
          <div className="sform">
            <h3>예약 요청하기</h3>
            <BookingForm />
          </div>
        </Sheet>
      )}
    </div>
  );
}