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 {MapPinIcon, PhoneIcon, TalkIcon} from './icons';
import '../kit/kit.css';
import './coral.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'>, {kicker: string; title: string; note: string}> = {
  area: {
    kicker: 'Travel',
    title: '지역 소개',
    note: '대문에서 걸어 닿는 자리와, 이 도시가 남긴 이야기입니다.',
  },
  stay: {
    kicker: 'Reservation',
    title: '이용안내 · 예약',
    note: '상세 안내와 요금, 예약하는 방법입니다.',
  },
  story: {
    kicker: '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;
}

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

  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 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 links = publicLinks(payload);
  const instagram = links.find((link) => /instagram\.com/i.test(link.url));
  const kakao = payload.links.find((link) => link.confirmed && /(pf|open)\.kakao\.com/i.test(link.url));
  const address = place.roadAddress ?? place.address;
  const english = place.englishName?.trim();
  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 && (
      <a key="dir" href={naverDirectionsUrl(place.name, place.latitude, place.longitude)} target="_blank" rel="noopener noreferrer nofollow">
        <MapPinIcon />
        길찾기
      </a>
    ),
    kakao && (
      <a key="talk" href={kakao.url} target="_blank" rel="noopener noreferrer">
        <TalkIcon />
        카톡
      </a>
    ),
    place.phone && (
      <a key="tel" href={`tel:${place.phone}`}>
        <PhoneIcon />
        전화
      </a>
    ),
  ].filter(Boolean);
  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>
  ) : null;

  return (
    <div className="w4-coral" data-page={page}>
      <header className="top">
        <div className="wrap">
          {place.phone ? (
            <a className="ico" href={`tel:${place.phone}`} aria-label="전화 걸기">
              <PhoneIcon />
            </a>
          ) : (
            <span className="ico" />
          )}
          <a className={english ? 'logo' : 'logo logo--ko'} href="#/">
            {english || place.name}
          </a>
          {stayBooking ? (
            <button type="button" className="badge" onClick={() => setBookingOpen(true)}>
              Book
              <br />
              Now
            </button>
          ) : booking ? (
            <a className="badge" href={booking.url} target="_blank" rel="noopener noreferrer">
              Book
              <br />
              Now
            </a>
          ) : (
            <span className="ico" />
          )}
        </div>
        <nav className="tabs" aria-label="주요 메뉴">
          {tabs.map((tab) => (
            <a
              key={tab.page}
              href={tab.page === 'home' ? '#/' : `#/${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>
      </header>

      {(Object.keys(PAGE_HEAD) as Exclude<PageId, 'home'>[]).map((id) => (
        <div key={id} data-pg={id}>
          <section className="sec pagehead">
            <p className="kicker">{PAGE_HEAD[id].kicker}</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}

      {links.length > 0 && (
        <div data-pg="stay">
          <section className="sec" id="channels">
            <p className="kicker">Channel</p>
            <h2>공식 채널</h2>
            <div className="list">
              {links.map((link) => (
                <a key={link.url} className="row" 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">
          {place.phone && (
            <a className="ftel" href={`tel:${place.phone}`}>
              {place.phone}
            </a>
          )}
          <b className="fname">{place.name}</b>
          {address && <p>{address}</p>}
          {hours.length > 0 && <p>{hours.join(' · ')}</p>}
          {(place.phone || instagram) && (
            <p>
              {place.phone && <a href={`tel:${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>
        <p className={english ? 'giant' : 'giant giant--ko'} aria-hidden>
          {english || place.name}
        </p>
      </footer>

      <div className="player">
        <SongPlayer />
      </div>

      {(barItems.length > 0 || cta) && (
        <nav
          className="tabbar"
          aria-label="연락"
          style={{gridTemplateColumns: [...barItems.map(() => '1fr'), ...(cta ? ['1.6fr'] : [])].join(' ')}}
        >
          {barItems}
          {cta}
        </nav>
      )}

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