// 채널 발견 + 엔티티 검증 (datacrawling 스킬 §1~§2 를 코드로). 병원 이름 또는 URL 하나로 유튜브·인스타·페이스북·네이버 블로그·틱톡·카카오·강남언니·네이버 플레이스를 찾고,
// 후보마다 "이 병원의 것인가"를 근거 점수로 판정한다. 부재는 다섯 갈래를 전부 돈 뒤에만 NOT_FOUND, 아니면 UNVERIFIED.
//
//   node scripts/discover_channels.mjs --clinic <id> (--name <상호> | --url <홈>) [--evidence <dir>] [--out channels.json] [--registry ../data/clinic_social_registry.json]
//
// 갈래: ① 사이트 전수(홈·법무·소개·연락처 HTML + JSON-LD sameAs + 근거 수집 링크) ② 웹검색(Firecrawl search·네이버 webkr/blog·YouTube API 채널 검색)
//       ③ 핸들 변형(도메인 기반 base × 구분자 × 접미사, 존재 확인만) ④ 레지스트리(data/clinic_social_registry.json) ⑤ 플랫폼 내부 검색(YouTube API)
// 판정: 상호 역링크(+3) · 프로필 제목에 상호(+2) · 프로필 설명에 홈페이지 도메인/전화(+2) · 레지스트리(+2) · 검색 스니펫에 상호+플랫폼(+1)
//       ≥3 CONFIRMED · 1~2 CANDIDATE(사람 확인) · 존재 404 HANDLE_DEAD · 접근 차단 BLOCKED · 후보 0 NOT_FOUND(전 갈래 실행 시)/UNVERIFIED
import { readFileSync, writeFileSync, existsSync, readdirSync } from 'node:fs';
import { join, resolve, dirname } from 'node:path';
import { fileURLToPath } from 'node:url';

const here = fileURLToPath(new URL('.', import.meta.url));
const args = process.argv.slice(2);
const opt = (k, d) => { const i = args.indexOf(`--${k}`); return i >= 0 && args[i + 1] && !args[i + 1].startsWith('--') ? args[i + 1] : d; };
(function loadEnv() { let dir = here; for (let i = 0; i < 4; i++) { const p = join(dir, '.env'); if (existsSync(p)) for (const line of readFileSync(p, 'utf8').split('\n')) { const m = line.match(/^\s*([A-Z0-9_]+)\s*=\s*(.*)\s*$/); if (m && !process.env[m[1]]) process.env[m[1]] = m[2].replace(/^["']|["']$/g, ''); } dir = dirname(dir); } })();
const KEYS = { yt: process.env.YOUTUBE_API_KEY, fc: process.env.FIRECRAWL_API_KEY, nid: process.env.NAVER_CLIENT_ID, nsec: process.env.NAVER_CLIENT_SECRET };
const clinic = opt('clinic'); let name = opt('name'); let home = opt('url');
if (!clinic || (!name && !home)) { console.error('--clinic 과 --name 또는 --url 필요'); process.exit(2); }
const OUT = resolve(opt('out', `channels.${clinic}.json`));
const EV = opt('evidence') ? resolve(opt('evidence')) : null;
const REG = resolve(opt('registry', join(here, '../../data/clinic_social_registry.json')));
const today = new Date().toISOString().slice(0, 10);
const UA = 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0 Safari/537.36 INFINITH-supporters-discover/1.0 (+mailto:o2oteam@o2o.kr)';
const sleep = (ms) => new Promise((r) => setTimeout(r, ms));
const log = (s) => console.log(s);

// ---------- 플랫폼 패턴 (supabase/functions/_shared/extractSocialLinks.ts 이식 + 병의원 표면) ----------
const PLATFORMS = {
  youtube: { re: /(?:www\.|m\.)?youtube\.com\/(?:@([a-zA-Z0-9._-]+)|channel\/(UC[a-zA-Z0-9_-]{20,})|c\/([a-zA-Z0-9._-]+)|user\/([a-zA-Z0-9._-]+))/i, key: (m) => (m[2] ? m[2] : '@' + (m[1] || m[3] || m[4])), url: (k) => (k.startsWith('UC') ? `https://www.youtube.com/channel/${k}` : `https://www.youtube.com/${k}`) },
  instagram: { re: /(?:www\.)?instagram\.com\/([a-zA-Z0-9._]{2,30})\/?(?:[?#]|$)/i, key: (m) => m[1].toLowerCase(), url: (k) => `https://www.instagram.com/${k}/`, skip: /^(p|reel|reels|explore|accounts|stories|share|about|legal|directory|tv)$/i },
  facebook: { re: /(?:www\.|m\.)?facebook\.com\/([a-zA-Z0-9._-]{2,60})\/?(?:[?#]|$)/i, key: (m) => m[1], url: (k) => `https://www.facebook.com/${k}`, skip: /^(sharer|share|login|help|pages|events|groups|marketplace|watch|gaming|privacy|policies|tr|dialog|plugins|photo|video|reel|profile\.php|people|hashtag|search)$/i },
  naverBlog: { re: /blog\.naver\.com\/([a-zA-Z0-9_-]{2,40})/i, key: (m) => m[1].toLowerCase(), url: (k) => `https://blog.naver.com/${k}`, skip: /^(PostView|BlogHome|postview)$/i },
  tiktok: { re: /(?:www\.)?tiktok\.com\/@([a-zA-Z0-9._-]+)/i, key: (m) => m[1].toLowerCase(), url: (k) => `https://www.tiktok.com/@${k}` },
  kakao: { re: /pf\.kakao\.com\/([a-zA-Z0-9_-]+)/i, key: (m) => m[1], url: (k) => `https://pf.kakao.com/${k}` },
  gangnamunni: { re: /gangnamunni\.com\/hospitals\/(\d+)/i, key: (m) => m[1], url: (k) => `https://www.gangnamunni.com/hospitals/${k}` },
  naverPlace: { re: /(?:m\.)?place\.naver\.com\/(?:hospital|place)\/(\d+)|map\.naver\.com\/(?:p\/entry\/place|v5\/entry\/place)\/(\d+)/i, key: (m) => m[1] || m[2], url: (k) => `https://m.place.naver.com/hospital/${k}` },
  babitalk: { re: /babitalk\.com\/hospitals\/(\d+)/i, key: (m) => m[1], url: (k) => `https://babitalk.com/hospitals/${k}` },
};
const cands = Object.fromEntries(Object.keys(PLATFORMS).map((p) => [p, new Map()])); // platform → key → { key, url, sources:Set, hits:[] }
function addCandidate(rawUrl, source, note = '') {
  for (const [p, def] of Object.entries(PLATFORMS)) {
    const m = String(rawUrl).match(def.re); if (!m) continue;
    const k = def.key(m); if (!k || (def.skip && def.skip.test(k))) return;
    const c = cands[p].get(k) ?? { platform: p, key: k, url: def.url(k), sources: new Set(), notes: [] };
    c.sources.add(source); if (note) c.notes.push(note); cands[p].set(k, c); return;
  }
}
const extractAll = (text, source, note) => { for (const m of String(text).matchAll(/https?:\/\/[^\s"'<>)\]]+/g)) addCandidate(m[0], source, note); };

// ---------- 0. 이름 ↔ URL 보완 ----------
async function fetchText(url, tries = 1) {
  for (let i = 0; i <= tries; i++) {
    try { const r = await fetch(url, { headers: { 'user-agent': UA, accept: 'text/html,*/*' }, redirect: 'follow', signal: AbortSignal.timeout(20000) }); return { status: r.status, url: r.url, body: r.ok ? await r.text() : '' }; }
    catch (e) { if (i === tries) return { status: 0, url, body: '', error: e.message }; await sleep(800); }
  }
}
async function fcSearch(query, limit = 8) {
  if (!KEYS.fc) return [];
  try { const r = await fetch('https://api.firecrawl.dev/v1/search', { method: 'POST', headers: { 'content-type': 'application/json', authorization: `Bearer ${KEYS.fc}` }, body: JSON.stringify({ query, limit }), signal: AbortSignal.timeout(30000) }); const j = await r.json(); return (j.data ?? []).map((x) => ({ url: x.url, title: x.title ?? '', snippet: x.description ?? '' })); } catch { return []; }
}
async function naverSearch(kind, query, display = 10) {
  if (!KEYS.nid) return [];
  try { const r = await fetch(`https://openapi.naver.com/v1/search/${kind}.json?query=${encodeURIComponent(query)}&display=${display}`, { headers: { 'X-Naver-Client-Id': KEYS.nid, 'X-Naver-Client-Secret': KEYS.nsec } }); const j = await r.json(); return (j.items ?? []).map((x) => ({ url: x.link, title: (x.title ?? '').replace(/<[^>]+>/g, ''), snippet: (x.description ?? '').replace(/<[^>]+>/g, '') })); } catch { return []; }
}
const PLATFORM_HOST = /youtube\.com|youtu\.be|instagram\.com|facebook\.com|blog\.naver\.com|tiktok\.com|kakao\.com|gangnamunni\.com|place\.naver\.com|map\.naver\.com|babitalk\.com|naver\.com|google\.|daum\.net|tistory\.com|namu\.wiki|wikipedia/i;

const searchLog = [];
if (!home) {
  // 상호로 공식 홈페이지 찾기: 플랫폼이 아닌 도메인 중 제목에 상호가 들어간 첫 결과
  const q = `${name} 공식 홈페이지`; searchLog.push(q);
  const res = [...(await fcSearch(q, 8)), ...(await naverSearch('webkr', name, 10))];
  const core = coreName(name);
  const hit = res.find((r) => !PLATFORM_HOST.test(r.url) && (r.title.replace(/\s/g, '').includes(core) || r.snippet.replace(/\s/g, '').includes(core)));
  if (!hit) { console.error(`홈페이지를 찾지 못함: ${name}`); }
  else { const u = new URL(hit.url); home = `${u.protocol}//${u.host}`; log(`홈페이지 추정: ${home} (${hit.title.slice(0, 40)})`); }
}
const homeHtml = home ? await fetchText(home) : { body: '' };
if (!name) {
  const t = homeHtml.body.match(/<title[^>]*>([^<]*)<\/title>/i)?.[1] ?? '';
  const og = homeHtml.body.match(/property="og:site_name"\s+content="([^"]+)"/i)?.[1] ?? '';
  name = (og || t).replace(/[|–-].*$/, '').replace(/당신만 봅니다/, '').trim() || clinic;
  log(`상호 추정: ${name}`);
}
function coreName(n) { return String(n).replace(/\s/g, '').replace(/(성형외과|의원|피부과|클리닉|병원|치과|한의원|WJ|wj)/gi, '') || String(n).replace(/\s/g, ''); }
const core = coreName(name);
const domainBase = home ? new URL(home).host.replace(/^www\./, '').split('.')[0].replace(/^k-|^the-?/, '') : '';
const phone = (homeHtml.body.match(/0\d{1,2}-\d{3,4}-\d{4}/g) ?? [])[0] ?? '';
log(`상호 ${name} · 핵심어 ${core} · 도메인 base ${domainBase} · 전화 ${phone || '?'}`);

// ---------- ① 사이트 전수 ----------
const sitePages = [];
if (home) {
  const paths = ['/', '/privacy', '/privacy-policy', '/service/private', '/terms', '/service/terms', '/about', '/hospitalinfo/about', '/contact', '/counsel', '/sitemap.xml'];
  for (const p of paths) {
    const r = p === '/' ? { ...homeHtml, url: home } : await fetchText(home + p);
    if (r.status && r.status < 400 && r.body) {
      sitePages.push(p);
      extractAll(r.body, 'site', p);
      for (const m of r.body.matchAll(/"sameAs"\s*:\s*(\[[^\]]*\]|"[^"]+")/g)) extractAll(m[1], 'site:sameAs', p);
      for (const m of r.body.matchAll(/<meta[^>]+(?:property|name)="(?:og:see_also|twitter:site)"[^>]+content="([^"]+)"/g)) extractAll(m[1], 'site:meta', p);
    }
    await sleep(200);
  }
}
if (EV && existsSync(join(EV, 'index.json'))) {
  const idx = JSON.parse(readFileSync(join(EV, 'index.json'), 'utf8'));
  for (const p of idx.pages) { try { const pg = JSON.parse(readFileSync(join(EV, p.file), 'utf8')); for (const l of pg.links ?? []) addCandidate(String(l.href ?? l.url ?? l ?? ''), 'evidence', p.url); } catch { /* */ } }
}
const homeReciprocal = (homeHtml.body || '').toLowerCase();

// ---------- ④ 레지스트리 ----------
let registry = null;
if (existsSync(REG)) {
  const reg = JSON.parse(readFileSync(REG, 'utf8'));
  const key = Object.keys(reg).find((k) => k.replace(/\s/g, '') === name.replace(/\s/g, '') || coreName(k) === core);
  if (key) { registry = reg[key]; for (const list of Object.values(registry)) for (const u of list ?? []) addCandidate(u, 'registry'); log(`레지스트리: ${key} (${Object.values(registry).flat().length}개 URL)`); }
}

// ---------- ② 웹검색 + ⑤ 플랫폼 검색 ----------
const searchHits = []; // { url, title, snippet, query }
const queries = [
  `"${name}" 인스타그램`, `"${name}" 유튜브`, `"${name}" 페이스북`, `"${name}" 블로그`, `${name} 강남언니`, `${name} 네이버 플레이스`,
  `site:instagram.com ${core}`, `site:youtube.com ${name}`, `site:facebook.com ${name}`,
];
for (const q of queries) { searchLog.push(q); const res = await fcSearch(q, 8); for (const r of res) { searchHits.push({ ...r, query: q }); addCandidate(r.url, 'search', q); extractAll(r.snippet, 'search:snippet', q); } await sleep(300); }
for (const q of [`${name} 인스타그램`, `${name} 유튜브`, `${name} 페이스북`, `${name} 블로그`]) { searchLog.push('naver:' + q); for (const r of await naverSearch('webkr', q, 10)) { searchHits.push({ ...r, query: 'naver:' + q }); addCandidate(r.url, 'search', q); } }
for (const r of await naverSearch('blog', name, 10)) { searchHits.push({ ...r, query: 'naver:blog' }); addCandidate(r.url, 'search:naverblog', name); }
if (KEYS.yt) {
  for (const q of [name, `${name} 성형외과`]) {
    try { const r = await fetch(`https://www.googleapis.com/youtube/v3/search?part=snippet&type=channel&q=${encodeURIComponent(q)}&maxResults=5&key=${KEYS.yt}`); const j = await r.json(); for (const it of j.items ?? []) { addCandidate(`https://www.youtube.com/channel/${it.id.channelId}`, 'youtube:search', q); searchHits.push({ url: `https://www.youtube.com/channel/${it.id.channelId}`, title: it.snippet.title, snippet: it.snippet.description, query: 'yt:' + q }); } } catch { /* */ }
  }
}

// ---------- ③ 핸들 변형 (존재 확인만) ----------
const variantsTried = [];
if (domainBase && domainBase.length >= 3) {
  const SUF = ['', 'official', 'ps', 'clinic', 'plasticsurgery', 'kr', 'korea', 'seoul'];
  const SEP = { instagram: ['', '.', '_'], youtube: ['', '_', '-'], tiktok: ['', '.', '_'] };
  const vs = new Set(); for (const s of SUF) for (const sep of ['', '.', '_', '-']) vs.add(s ? `${domainBase}${sep}${s}` : domainBase);
  for (const p of ['instagram', 'youtube']) {
    for (const h of [...vs].filter((h) => SEP[p].some((sep) => !h.includes('.') && !h.includes('_') && !h.includes('-') || h.includes(sep)))) {
      if (cands[p].has(p === 'youtube' ? '@' + h : h)) continue;
      variantsTried.push(`${p}:${h}`);
      if (p === 'youtube' && KEYS.yt) { try { const r = await fetch(`https://www.googleapis.com/youtube/v3/channels?part=id&forHandle=${encodeURIComponent(h)}&key=${KEYS.yt}`); const j = await r.json(); if (j.items?.length) addCandidate(`https://www.youtube.com/channel/${j.items[0].id}`, 'variant', h); } catch { /* */ } }
      if (p === 'instagram') { const r = await fetchText(`https://www.instagram.com/${h}/`, 0); if (r.status === 200 && !/Page Not Found|페이지를 찾을 수 없|login/i.test(r.body.slice(0, 3000))) addCandidate(`https://www.instagram.com/${h}/`, 'variant', h); await sleep(400); }
      if (variantsTried.length > 40) break;
    }
  }
}

// ---------- 검증 ----------
const ytChannels = new Map();
async function ytInfo(key) {
  if (!KEYS.yt) return null;
  const param = key.startsWith('UC') ? `id=${key}` : `forHandle=${encodeURIComponent(key.slice(1))}`;
  try { const r = await fetch(`https://www.googleapis.com/youtube/v3/channels?part=snippet,statistics&${param}&key=${KEYS.yt}`); const j = await r.json(); const c = j.items?.[0]; if (!c) return { exists: false }; return { exists: true, id: c.id, title: c.snippet.title, description: c.snippet.description ?? '', handle: c.snippet.customUrl, subscribers: Number(c.statistics.subscriberCount ?? 0), videos: Number(c.statistics.videoCount ?? 0), views: Number(c.statistics.viewCount ?? 0) }; } catch { return null; }
}
async function profileInfo(p, c) {
  if (p === 'youtube') return ytInfo(c.key);
  if (p === 'naverBlog') { const r = await fetchText(`https://rss.blog.naver.com/${c.key}.xml`, 0); if (r.status === 404) return { exists: false }; if (!r.body) return null; return { exists: true, title: r.body.match(/<title>([^<]*)<\/title>/)?.[1] ?? '', description: r.body.match(/<description>([^<]*)<\/description>/)?.[1] ?? '' }; }
  const r = await fetchText(c.url, 0);
  if (r.status === 404) return { exists: false };
  if (!r.body || r.status !== 200) return null; // 차단·로그인 요구
  const og = (prop) => r.body.match(new RegExp(`<meta[^>]+(?:property|name)="${prop}"[^>]+content="([^"]*)"`, 'i'))?.[1] ?? '';
  const title = og('og:title') || r.body.match(/<title[^>]*>([^<]*)<\/title>/i)?.[1] || '';
  if (/login|로그인|Page Not Found|콘텐츠를 사용할 수 없|isn't available/i.test(title) && !title.includes(core)) return null;
  return { exists: true, title, description: og('og:description') || og('description') };
}
const norm = (s) => String(s ?? '').replace(/\s/g, '').toLowerCase();
const domainHost = home ? new URL(home).host.replace(/^www\./, '') : '';
const results = {};
for (const [p, map] of Object.entries(cands)) {
  results[p] = [];
  for (const c of map.values()) {
    const info = await profileInfo(p, c).catch(() => null);
    const ev = []; let score = 0;
    const hasSite = [...c.sources].some((s) => s.startsWith('site'));
    const hostPath = c.url.replace(/^https?:\/\/(www\.|m\.)?/, '').replace(/\/$/, '').toLowerCase();
    // 역링크는 경로 경계까지 맞아야 한다 (instagram.com/wonjin 이 instagram.com/wonjin_official 안에 들어 있는 것은 역링크가 아니다)
    const reciprocal = hasSite || new RegExp(hostPath.replace(/[.*+?^${}()|[\]\\]/g, '\\$&') + '(?![a-z0-9._-])').test(homeReciprocal);
    if (reciprocal) { score += 3; ev.push('홈페이지에서 역링크'); }
    if (c.sources.has('registry')) { score += 2; ev.push('레지스트리 등재'); }
    if (info?.exists) {
      const t = norm(info.title), d = norm(info.description);
      if (t.includes(norm(core)) || (domainBase && t.includes(domainBase))) { const w = ['gangnamunni', 'babitalk', 'naverPlace'].includes(p) ? 3 : 2; score += w; ev.push(`프로필 제목에 상호: "${String(info.title).slice(0, 40)}"`); }
      if (domainHost && d.includes(domainHost.toLowerCase())) { score += 2; ev.push('프로필 설명에 홈페이지 도메인'); }
      else if (phone && d.replace(/[-.]/g, '').includes(phone.replace(/-/g, ''))) { score += 2; ev.push('프로필 설명에 대표 전화'); }
    }
    const snip = searchHits.filter((h) => norm(h.url).includes(norm(c.key)) && (norm(h.title + h.snippet).includes(norm(core))));
    if (snip.length && !ev.some((e) => e.startsWith('프로필 제목'))) { score += 1; ev.push(`검색 결과 제목/요약에 상호 (${snip[0].query})`); }
    let status = info === null && !hasSite ? 'BLOCKED' : info && info.exists === false ? 'HANDLE_DEAD' : score >= 3 ? 'CONFIRMED' : score >= 1 ? 'CANDIDATE' : 'UNRELATED';
    if (status === 'BLOCKED' && score >= 3) status = 'CONFIRMED';
    results[p].push({ platform: p, key: c.key, url: c.url, status, score, evidence: ev, sources: [...c.sources], ...(info?.exists ? { title: info.title, handle: info.handle, channelId: info.id, subscribers: info.subscribers, videos: info.videos, views: info.views } : {}) });
    await sleep(150);
  }
  if (p === 'youtube') { const byId = new Map(); for (const x of results[p]) { const id = x.channelId ?? x.key; const prev = byId.get(id); if (!prev) byId.set(id, x); else { prev.score = Math.max(prev.score, x.score); prev.evidence = [...new Set([...prev.evidence, ...x.evidence])]; prev.sources = [...new Set([...prev.sources, ...x.sources])]; if (x.status === 'CONFIRMED') prev.status = 'CONFIRMED'; } } results[p] = [...byId.values()]; }
  results[p].sort((a, b) => b.score - a.score || (b.subscribers ?? 0) - (a.subscribers ?? 0));
}
const allBranches = Boolean(home) && Boolean(KEYS.fc) && Boolean(KEYS.nid) && Boolean(KEYS.yt);
const inventory = Object.entries(results).map(([p, list]) => {
  const confirmed = list.filter((x) => x.status === 'CONFIRMED');
  const state = confirmed.length ? 'CONFIRMED' : list.some((x) => x.status === 'CANDIDATE') ? 'CANDIDATE' : list.some((x) => x.status === 'BLOCKED') ? 'BLOCKED' : list.length ? 'HANDLE_DEAD' : allBranches ? 'NOT_FOUND' : 'UNVERIFIED';
  return { platform: p, state, confirmed: confirmed.length, candidates: list.filter((x) => x.status === 'CANDIDATE').length, tried: `사이트 ${sitePages.length}면 · 검색 ${searchLog.length}건 · 변형 ${variantsTried.filter((v) => v.startsWith(p)).length}` };
});
const out = { clinic, name, url: home ?? null, checkedAt: today, phone: phone || null, branches: { sitePages, searchQueries: searchLog, variantsTried, registry: Boolean(registry), allBranches }, inventory, platforms: results, rules: 'datacrawling 스킬 §1~§2. CONFIRMED=근거 점수 3 이상, CANDIDATE=사람 확인, NOT_FOUND 는 다섯 갈래 전부 실행 시에만' };
writeFileSync(OUT, JSON.stringify(out, null, 1));
for (const row of inventory) log(`  ${row.platform.padEnd(11)} ${row.state.padEnd(11)} 확정 ${row.confirmed} 후보 ${row.candidates}  ${results[row.platform].filter((x) => x.status === 'CONFIRMED').map((x) => x.key + (x.subscribers ? `(${x.subscribers})` : '')).join(', ')}`);
log(`저장 ${OUT}`);