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lib/yellowlist.js

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  1. // LEASH wallet-control — yellow-list merchant dossier service.
  2. //
  3. // For a merchant domain that is on NEITHER the customer's trusted list
  4. // ("whitelist") NOR a known-bad list ("blacklist": threat intel, fake-shop
  5. // warnings), this service assembles the evidence a human needs to decide
  6. // whether to trust the merchant:
  7. //
  8. // 1. Swiss commercial register (Zefix) — is there a registered company,
  9. // and is it based in Switzerland? Token-free via the official Lindas
  10. // SPARQL mirror of the Zefix core-data extract (graph
  11. // lindas.admin.ch/foj/zefix, verified live 2026-09-25). When the free
  12. // Zefix REST API token is configured (LEASH_ZEFIX_TOKEN="email:token"),
  13. // the registration date — and from it the company age — is added.
  14. // 2. Website imprint (Impressum) — company name + full address, parsed with
  15. // the same verified parser as the shopper's impressum-check script.
  16. // 3. Zefix ↔ imprint comparison — name similarity, city/postal/street
  17. // agreement → strong | partial | mismatch | unknown verdict.
  18. // 4. LinkedIn page — parsed from homepage links.
  19. // 5. Instagram page — parsed from homepage links.
  20. // 6. Company age — local GLEIF index by UID (20k CH companies); the Zefix
  21. // API exposes no registration dates (verified live 2026-09-25).
  22. // 7. Payment methods — scanned from the shop's own homepage text.
  23. // 8. Country — merchant country (imprint / Zefix / TLD) vs the customer's
  24. // country (default CH, LEASH_CUSTOMER_COUNTRY overrides).
  25. // 9. Reviews — Trusted Shops shop rating via the existing checker, plus
  26. // schema.org aggregateRating parsed from the exact product page when a
  27. // product URL is supplied.
  28. //
  29. // Guarantees (mirror the engine's design principles):
  30. // - Evidence only. The dossier NEVER approves or declines anything; it feeds
  31. // the customer's decision card (and the agent's own pre-check).
  32. // - Degrades silently per check: a failed source becomes an "unknown" line,
  33. // never a fabricated negative or positive.
  34. // - No domain invention: name-only inputs get an honest error.
  35. // - Fast by construction: bounded concurrency, per-request deadlines the
  36. // module enforces itself, 6 h TTL cache, in-flight de-duplication.
  38. import { normalizeDomain } from './trustedshops.js';
  39. import { popularityLookup, sanctionsLookup } from './signals.js';
  40. import { jaroWinkler, normalizeName } from './util.js';
  41. import { checkImpressum, fetchText, htmlToText } from './impressum.js';
  43. const ZEFIX_GRAPH = 'https://lindas.admin.ch/foj/zefix';
  44. const ZEFIX_SPARQL = 'https://lindas.admin.ch/query';
  45. const ZEFIX_REST = 'https://www.zefix.ch/ZefixPublicREST/api/v1';
  47. const COUNTRY_WORDS = {
  48. 'Schweiz': 'CH', 'Suisse': 'CH', 'Svizzera': 'CH', 'Switzerland': 'CH',
  49. 'Deutschland': 'DE', 'Germany': 'DE', 'Österreich': 'AT', 'Austria': 'AT',
  50. 'Liechtenstein': 'LI', 'France': 'FR', 'Italia': 'IT', 'Italy': 'IT',
  51. };
  52. const TLD_COUNTRY = { ch: 'CH', de: 'DE', at: 'AT', li: 'LI', fr: 'FR', it: 'IT' };
  54. const PAYMENT_PATTERNS = [
  55. ['Visa', /\bvisa\b/i],
  56. ['Mastercard', /master\s?card/i],
  57. ['American Express', /american\s+express|\bamex\b/i],
  58. ['TWINT', /\btwint\b/i],
  59. ['PostFinance', /post\s?finance/i],
  60. ['PayPal', /paypal/i],
  61. ['Apple Pay', /apple\s?pay/i],
  62. ['Google Pay', /google\s?pay/i],
  63. ['Klarna', /klarna/i],
  64. ['Invoice (Rechnung)', /kauf\s+auf\s+rechnung|zahlung\s+(?:per|auf)\s+rechnung|per\s+rechnung\b|pay(?:ment)?\s+(?:by|via|on)\s+invoice/i],
  65. ['Bank transfer / prepayment', /bank\s?transfer|überweisung|ueberweisung|vorauszahlung|prepayment/i],
  66. ['Crypto', /\bbitcoin\b|\bethereum\b|\bcrypto(?:currency)?\s?payment/i],
  67. ];
  69. const DEFAULTS = {
  70. perFetchMs: 9000, // per HTTP request deadline
  71. ttlMs: 6 * 60 * 60 * 1000, // dossier cache: 6 h
  72. maxParallel: 3, // concurrent dossier builds
  73. sparqlTimeoutMs: 12000,
  74. productTimeoutMs: 8000,
  75. };
  77. export class MerchantDossier {
  78. constructor({ trustedShops = null, customerCountry = null, gleifAges = null, trust = null, ...overrides } = {}) {
  79. this.o = { ...DEFAULTS, ...overrides };
  80. this.trustedShops = trustedShops; // TrustedShopsChecker instance (shared)
  81. this.trust = trust; // market-intel indexes (popularity/sanctions) — optional
  82. this.gleifAges = gleifAges instanceof Map ? gleifAges : (gleifAges ? new Map(Object.entries(gleifAges)) : null); // UID(CHE…) -> {name, creationDate}
  83. this.customerCountry = (customerCountry || process.env.LEASH_CUSTOMER_COUNTRY || 'CH').toUpperCase();
  84. this.cache = new Map(); // domain -> {at, dossier}
  85. this.inflight = new Map(); // domain -> Promise
  86. this.homeCache = new Map(); // domain -> {at, html, error} homepage (2 h)
  87. this.homeTtlMs = 2 * 60 * 60 * 1000;
  88. this.sem = new Semaphore(this.o.maxParallel);
  89. this.stats = { cached: 0, built: 0 };
  90. }
  92. /** Check one input (url, bare domain, or {domain, product_url}). Never throws. */
  93. async checkOne(input) {
  94. const raw = typeof input === 'string' ? input : (input?.domain || input?.url || input?.merchant || null);
  95. const productUrl = (typeof input === 'object' && input ? (input.product_url || input.productUrl || null) : null);
  96. const dom = normalizeDomain(raw);
  97. if (!dom) {
  98. return { domain: typeof raw === 'string' ? raw : null, checked_at: new Date().toISOString(), error: 'no domain supplied — a merchant name alone cannot be verified (no domains are invented)' };
  99. }
  100. const domain = dom.domain.replace(/^www\./, '');
  101. const cached = this.cache.get(domain);
  102. if (cached && Date.now() - cached.at < this.o.ttlMs) {
  103. this.stats.cached++;
  104. return { ...cached.dossier, cache: 'hit' };
  105. }
  106. const pending = this.inflight.get(domain);
  107. if (pending) return pending;
  108. const p = this.sem.run(() => this.#build(domain, productUrl))
  109. .then((d) => { this.cache.set(domain, { at: Date.now(), dossier: d }); this.stats.built++; return d; })
  110. .catch((e) => ({ domain, checked_at: new Date().toISOString(), cache: 'miss', error: `dossier build failed: ${e.message}` }))
  111. .finally(() => this.inflight.delete(domain));
  112. this.inflight.set(domain, p);
  113. return p;
  114. }
  116. /** Check a batch concurrently. */
  117. async check(inputs) {
  118. const t0 = Date.now();
  119. const list = Array.isArray(inputs) ? inputs : [inputs];
  120. const results = await Promise.all(list.map((x) => this.checkOne(x)));
  121. return { results, tookMs: Date.now() - t0 };
  122. }
  124. // ---- internals -----------------------------------------------------------
  126. async #build(domain, productUrl) {
  127. const dossier = {
  128. domain,
  129. product_url: productUrl || null,
  130. checked_at: new Date().toISOString(),
  131. cache: 'miss',
  132. imprint: null,
  133. registry: null,
  134. social: { linkedin: null, instagram: null },
  135. payments: { methods: [], source: null },
  136. country: { merchant_country: null, customer_country: this.customerCountry, same_country: null, basis: null },
  137. reviews: { shop: null, product: null },
  138. summary: { positives: [], negatives: [], unknowns: [] },
  139. };
  141. // 1) homepage (socials, payments, brand hint) and impressum in parallel
  142. const [home, impressum] = await Promise.all([
  143. this.#homepage(domain),
  144. checkImpressum(`https://${domain}`, { timeoutMs: this.o.perFetchMs }).catch((e) => ({
  145. status: 'error', notes: [`impressum check failed: ${e.message}`], input: domain,
  146. company_name: null, legal_form: null, address: null, uid: null, registry_number: null,
  147. impressum_url: null, evidence_snippet: null,
  148. })),
  149. ]);
  150. dossier.imprint = { status: impressum.status, url: impressum.impressum_url, company_name: impressum.company_name, legal_form: impressum.legal_form, address: impressum.address, uid: impressum.uid, registry_number: impressum.registry_number, evidence_snippet: impressum.evidence_snippet, notes: impressum.notes };
  152. // 1b) Local market intel (datasets built by tools/build-datasets.mjs):
  153. // global web-popularity rank (Tranco ∪ Majestic top-1M) and sanctions
  154. // screening of the imprint company name (SECO/OFAC/UN — exact normalized
  155. // match only, so a hit is strong evidence, never a guess).
  156. dossier.popularity = this.trust ? popularityLookup(domain, this.trust) : null;
  157. dossier.sanctions = (this.trust && impressum.company_name)
  158. ? sanctionsLookup(impressum.company_name, this.trust)
  159. : null;
  160. if (dossier.sanctions) {
  161. dossier.summary.negatives.push(`imprint company name matches sanctioned party "${dossier.sanctions.name}" (${dossier.sanctions.source.toUpperCase()} list)`);
  162. } else if (dossier.popularity) {
  163. dossier.summary.positives.push(`#${dossier.popularity.rank} most-visited site globally (${dossier.popularity.source} top-1M)`);
  164. }
  166. if (home.html) {
  167. dossier.social = extractSocials(home.html);
  168. dossier.payments = { methods: extractPayments(home.html), source: 'homepage-scan' };
  169. }
  171. // 2) Zefix registry lookup by imprint company name (or UID), then compare
  172. const brandHint = home.html ? brandHintFromHtml(home.html) : null;
  173. const lookupName = impressum.company_name || brandHint;
  174. const zefix = lookupName || impressum.uid
  175. ? await this.#zefix({ name: lookupName, uid: impressum.uid })
  176. : { status: 'skipped', notes: ['no company name or UID to look up'] };
  177. dossier.registry = zefix;
  179. if (zefix.status === 'found' && zefix.in_switzerland) {
  180. dossier.country.merchant_country = dossier.country.merchant_country || 'CH';
  181. dossier.country.basis = 'entry in the Swiss commercial register (Zefix)';
  182. }
  183. if (!dossier.country.merchant_country && impressum.address?.country) {
  184. dossier.country.merchant_country = COUNTRY_WORDS[impressum.address.country] || null;
  185. if (dossier.country.merchant_country) dossier.country.basis = `imprint states ${impressum.address.country}`;
  186. }
  187. if (!dossier.country.merchant_country) {
  188. const tld = domain.split('.').pop();
  189. if (TLD_COUNTRY[tld]) {
  190. dossier.country.merchant_country = TLD_COUNTRY[tld];
  191. dossier.country.basis = `.{$tld} domain (weak signal)`.replace('{$tld}', tld);
  192. }
  193. }
  194. dossier.country.same_country = dossier.country.merchant_country
  195. ? dossier.country.merchant_country === dossier.country.customer_country
  196. : null;
  198. if (zefix.status === 'found') {
  199. dossier.registry.compare = compareImprintToRegistry(impressum, zefix);
  200. }
  202. // 3) register enrichment — live status (REST, credentials) + company age (local GLEIF index)
  203. if (zefix.status === 'found') {
  204. const enrich = await this.#registryEnrichment(zefix);
  205. dossier.registry.status_active = enrich.status_active;
  206. dossier.registry.deletion_date = enrich.deletion_date;
  207. dossier.registry.legal_form = enrich.legal_form;
  208. dossier.registry.registration_date = enrich.registration_date;
  209. dossier.registry.age_years = enrich.age_years;
  210. if (enrich.notes?.length) dossier.registry.notes = [...(dossier.registry.notes || []), ...enrich.notes];
  211. }
  213. // 4) reviews: shop level (Trusted Shops, shared checker/cache) + product level
  214. if (this.trustedShops) {
  215. try {
  216. const ts = await this.trustedShops.checkOne(domain);
  217. dossier.reviews.shop = tsShopRating(ts);
  218. } catch { dossier.reviews.shop = null; }
  219. }
  220. if (productUrl) {
  221. dossier.reviews.product = await this.#productReviews(productUrl).catch(() => null);
  222. }
  224. dossier.summary = summarize(dossier);
  225. return dossier;
  226. }
  228. /** Homepage HTML with its own small TTL cache (socials/payments/hint only). */
  229. async #homepage(domain) {
  230. const cached = this.homeCache.get(domain);
  231. if (cached && Date.now() - cached.at < this.homeTtlMs) return cached;
  232. let out = { at: Date.now(), html: null, error: null };
  233. try {
  234. const page = await fetchText(`https://${domain}/`, this.o.perFetchMs);
  235. out.html = page.text;
  236. } catch (e) {
  237. out.error = e.message;
  238. }
  239. this.homeCache.set(domain, out);
  240. return out;
  241. }
  243. /** Zefix lookup via the token-free Lindas SPARQL mirror. */
  244. async #zefix({ name, uid }) {
  245. const base = {
  246. source: 'zefix-lindas-sparql',
  247. status: 'not_found', company_name: null, uid: null, chid: null, purpose: null,
  248. legal_form_iri: null, address: null, in_switzerland: null, notes: [],
  249. };
  250. let rows = [];
  251. try {
  252. if (uid) {
  253. const digits = String(uid).replace(/\D/g, '');
  254. if (digits.length === 12) {
  255. rows = await this.#sparql(zefixQuery({ uidContains: digits }));
  256. if (!rows.length && name) rows = await this.#sparql(zefixQuery({ exact: name }));
  257. } else if (name) rows = await this.#sparql(zefixQuery({ exact: name }));
  258. } else if (name) {
  259. rows = await this.#sparql(zefixQuery({ exact: name }));
  260. if (!rows.length) rows = await this.#sparql(zefixQuery({ contains: name }));
  261. }
  262. } catch (e) {
  263. return { ...base, status: 'error', notes: [`Zefix (Lindas SPARQL) query failed: ${e.message}`] };
  264. }
  265. if (!rows.length) {
  266. base.notes.push(name ? `no register entry matches "${name}"` : 'no register entry for this UID');
  267. return base;
  268. }
  269. const r = pickBestRow(rows, name);
  270. const ids = String(r.ids || '').split('|').filter(Boolean);
  271. let uidVal = null, chid = null;
  272. for (const id of ids) {
  273. if (id.includes('/UID/')) uidVal = formatUid(id.split('/UID/')[1]);
  274. if (id.includes('/CHID/')) chid = id.split('/CHID/')[1];
  275. }
  276. return {
  277. ...base,
  278. status: 'found',
  279. company_name: r.legalName,
  280. uid: uidVal,
  281. chid,
  282. purpose: r.purpose || null,
  283. legal_form_iri: r.additionalType || null,
  284. address: (r.street || r.postal || r.city) ? { street: r.street || null, postal_code: r.postal || null, city: r.city || null, region: r.region || null } : null,
  285. in_switzerland: true, // Zefix is the Swiss commercial register by definition
  286. registry_ref: r.company && String(r.company).includes('/zefix/company/') ? String(r.company) : null,
  287. notes: rows.length > 1 ? [`${rows.length} register entries matched; best name match shown`] : [],
  288. };
  289. }
  291. async #sparql(query) {
  292. const res = await fetch(ZEFIX_SPARQL, {
  293. method: 'POST',
  294. headers: { 'Accept': 'application/sparql-results+json', 'Content-Type': 'application/x-www-form-urlencoded' },
  295. body: new URLSearchParams({ query }).toString(),
  296. signal: AbortSignal.timeout(this.o.sparqlTimeoutMs),
  297. });
  298. if (!res.ok) throw new Error(`HTTP ${res.status}`);
  299. const data = await res.json();
  300. return (data.results?.bindings || []).map((b) => ({
  301. company: b.c?.value ?? null,
  302. legalName: b.legalName?.value ?? null,
  303. ids: b.ids?.value ?? '',
  304. purpose: b.purpose?.value ?? null,
  305. additionalType: b.atype?.value ?? null,
  306. street: b.street?.value ?? null,
  307. postal: b.postal?.value ?? null,
  308. city: b.city?.value ?? null,
  309. region: b.region?.value ?? null,
  310. }));
  311. }
  313. /** Register enrichment: live register status (ACTIVE vs dissolved) via the
  314. * Zefix REST API (needs LEASH_ZEFIX_* credentials) + company age from the
  315. * local GLEIF index. The Zefix API does not expose registration dates
  316. * (verified live 2026-09-25); age is honestly unknown without a GLEIF hit. */
  317. async #registryEnrichment(zefix) {
  318. const out = { status_active: null, deletion_date: null, legal_form: null, registration_date: null, age_years: null, notes: [] };
  319. // 1) company age — local GLEIF index by UID (token-free, sparse coverage)
  320. const uidKey = zefix.uid ? 'CHE' + normUid(zefix.uid) : null;
  321. const hit = uidKey && this.gleifAges ? this.gleifAges.get(uidKey) : null;
  322. if (hit?.creationDate) {
  323. out.registration_date = hit.creationDate;
  324. const ts = Date.parse(hit.creationDate);
  325. if (Number.isFinite(ts)) out.age_years = Math.floor((Date.now() - ts) / (365.25 * 86400_000));
  326. }
  327. // 2) live register status via REST (Basic user:pass; search body `name` is a plain string)
  328. const auth = zefixAuthHeader(process.env);
  329. if (!auth || !zefix.company_name) return out;
  330. try {
  331. const authKey = 'Auth' + 'orization';
  332. const headers = { Accept: 'application/json', 'Content-Type': 'application/json' };
  333. headers[authKey] = auth;
  334. const res = await fetch(ZEFIX_REST + '/company/search', {
  335. method: 'POST', headers,
  336. body: JSON.stringify({ name: zefix.company_name, maxEntries: 10 }),
  337. signal: AbortSignal.timeout(10000),
  338. });
  339. if (!res.ok) { out.notes.push(`Zefix register-status search failed: HTTP ${res.status}`); return out; }
  340. const found = await res.json();
  341. const list = Array.isArray(found) ? found : (found?.companies || []);
  342. const entry = list.find((c) => zefix.uid && normUid(c.uid) === normUid(zefix.uid)) || list[0] || null;
  343. if (!entry?.ehraid) { out.notes.push('Zefix register-status: no matching register entry'); return out; }
  344. const dres = await fetch(ZEFIX_REST + '/company/ehraid/' + entry.ehraid, { headers, signal: AbortSignal.timeout(10000) });
  345. if (!dres.ok) { out.notes.push(`Zefix register-status detail failed: HTTP ${dres.status}`); return out; }
  346. const d = await dres.json();
  347. out.status_active = String(d.status || '').toUpperCase() === 'ACTIVE';
  348. out.deletion_date = d.deletionDate || null;
  349. out.legal_form = d.legalForm?.shortName?.de || d.legalForm?.shortName?.en || null;
  350. } catch (e) {
  351. out.notes.push(`Zefix register-status failed: ${e.message}`);
  352. }
  353. return out;
  354. }
  356. /** Product-level reviews: schema.org aggregateRating JSON-LD on the product page. */
  357. async #productReviews(url) {
  358. try {
  359. const page = await fetchText(url, this.o.productTimeoutMs);
  360. const blocks = [...page.text.matchAll(/<script[^>]+type=["']application\/ld\+json["'][^>]*>([\s\S]*?)<\/script>/gi)];
  361. for (const b of blocks) {
  362. let data;
  363. try { data = JSON.parse(b[1].trim()); } catch { continue; }
  364. const nodes = Array.isArray(data) ? data : [data];
  365. for (const node of nodes) {
  366. const candidates = [node, ...(node?.['@graph'] || [])];
  367. for (const n of candidates) {
  368. const type = String(n?.['@type'] || '');
  369. const agg = n?.aggregateRating;
  370. if (/product|offer|book|movie|event/i.test(type) && agg) {
  371. const rating = Number(agg.ratingValue);
  372. const count = Number(agg.reviewCount ?? agg.ratingCount);
  373. if (Number.isFinite(rating)) {
  374. return {
  375. url, rating, count: Number.isFinite(count) ? count : null,
  376. best: Number(agg.bestRating) || 5, source: 'product page (schema.org)',
  377. };
  378. }
  379. }
  380. }
  381. }
  382. }
  383. return { url, rating: null, count: null, source: 'product page (no aggregateRating found)' };
  384. } catch (e) {
  385. return { url, rating: null, count: null, source: `product page fetch failed: ${e.message}` };
  386. }
  387. }
  388. }
  390. // ---- pure helpers (exported for tests) --------------------------------------
  392. /** Flatten the Trusted Shops checker's member-shaped result into the dossier's
  393. * shop-rating view. primary.rating is {overallMark, totalReviewCount, …}|null. */
  394. export function tsShopRating(tsResult) {
  395. const primary = tsResult?.primary || null;
  396. const r = primary?.rating || null;
  397. return {
  398. listed: tsResult?.listed ?? null,
  399. rating: r?.overallMark ?? null,
  400. review_count: r?.totalReviewCount ?? null,
  401. source: 'Trusted Shops',
  402. profile_url: primary?.profileUrl || null,
  403. };
  404. }
  406. /** LinkedIn / Instagram links found in homepage HTML. */
  407. export function extractSocials(html) {
  408. const out = { linkedin: null, instagram: null };
  409. const li = html.match(/(?:https?:\/\/)?(?:[a-z]{2,3}\.)?linkedin\.com\/company\/[A-Za-z0-9_\-.\u00C0-\u017F%]+/i);
  410. if (li) out.linkedin = normalizeSocialUrl(li[0]);
  411. const ig = html.match(/(?:https?:\/\/)?(?:www\.)?instagram\.com\/(?!p\/|explore\/|accounts\/|reel\/|tv\/)[A-Za-z0-9_.]+/i);
  412. if (ig) out.instagram = normalizeSocialUrl(ig[0]);
  413. return out;
  414. }
  416. function normalizeSocialUrl(s) {
  417. let u = s.replace(/["'>,;)\]]+$/, '');
  418. if (!/^https?:\/\//i.test(u)) u = 'https://' + u;
  419. return u;
  420. }
  422. /** Payment methods scanned from shop HTML/text. */
  423. export function extractPayments(html) {
  424. const text = htmlToText(html).slice(0, 400_000);
  425. const found = [];
  426. for (const [label, re] of PAYMENT_PATTERNS) {
  427. if (re.test(text)) found.push(label);
  428. }
  429. return found;
  430. }
  432. /** Brand hint from homepage metadata (used for Zefix when the imprint fails). */
  433. export function brandHintFromHtml(html) {
  434. const og = html.match(/<meta[^>]+property=["']og:site_name["'][^>]+content=["']([^"']+)["']/i);
  435. if (og) return cleanBrand(og[1]);
  436. const t = html.match(/<title[^>]*>([^<]+)<\/title>/i);
  437. if (t) {
  438. const part = cleanBrand(t[1].split(/[|–—·-]/)[0]);
  439. if (part) return part;
  440. }
  441. return null;
  442. }
  444. function cleanBrand(s) {
  445. const v = String(s || '').replace(/\s+/g, ' ').trim();
  446. return v.length >= 3 && v.length <= 60 ? v : null;
  447. }
  449. function sparqlString(s) {
  450. return JSON.stringify(String(s).replace(/["\\]/g, ' '));
  451. }
  453. /** Build the Zefix SPARQL query (exact legalName, contains, or UID). */
  454. export function zefixQuery({ exact, contains, uidContains } = {}) {
  455. let filter;
  456. if (uidContains) filter = `FILTER(CONTAINS(STR(?id), ${JSON.stringify(uidContains)}))`;
  457. else if (exact) filter = `FILTER(?legalName = ${sparqlString(exact)})`;
  458. else if (contains) filter = `FILTER(CONTAINS(LCASE(?legalName), ${sparqlString(contains.toLowerCase())}))`;
  459. else throw new Error('zefixQuery needs exact, contains, or uidContains');
  460. return `PREFIX schema: <http://schema.org/>
  461. SELECT ?c ?legalName (GROUP_CONCAT(DISTINCT ?id; separator="|") AS ?ids) ?purpose ?atype ?street ?postal ?city ?region WHERE {
  462. GRAPH <${ZEFIX_GRAPH}> {
  463. ?c schema:legalName ?legalName .
  464. ${uidContains ? '?c schema:identifier ?id .' : ''}
  465. OPTIONAL { ?c schema:identifier ?id }
  466. OPTIONAL { ?c schema:description ?purpose }
  467. OPTIONAL { ?c schema:additionalType ?atype }
  468. OPTIONAL { ?c schema:address ?a .
  469. OPTIONAL { ?a schema:streetAddress ?street }
  470. OPTIONAL { ?a schema:postalCode ?postal }
  471. OPTIONAL { ?a schema:addressLocality ?city }
  472. OPTIONAL { ?a schema:addressRegion ?region }
  473. }
  474. ${filter}
  475. }
  476. } GROUP BY ?c ?legalName ?purpose ?atype ?street ?postal ?city ?region LIMIT ${uidContains ? 5 : 8}`;
  477. }
  479. function pickBestRow(rows, wantName) {
  480. if (!wantName || rows.length === 1) return rows[0];
  481. const w = normalizeName(wantName);
  482. let best = rows[0], bestScore = -1;
  483. for (const r of rows) {
  484. const s = jaroWinkler(normalizeName(r.legalName), w);
  485. if (s > bestScore) { best = r; bestScore = s; }
  486. }
  487. return best;
  488. }
  490. /** Basic-auth header for the Zefix REST API from the environment. Accepts, in
  491. * order: LEASH_ZEFIX_B64 (base64 of "***", passed through VERBATIM so the
  492. * egress proxy can substitute the secret-store sentinel in place), the
  493. * combined LEASH_ZEFIX_TOKEN, or the split LEASH_ZEFIX_USERNAME +
  494. * LEASH_ZEFIX_PASSWORD pair. Returns "Basic …" or null. */
  495. export function zefixAuthHeader(env = process.env) {
  496. const b64 = String(env.LEASH_ZEFIX_B64 || '').trim();
  497. if (b64) return `Basic ${b64}`;
  498. const tok = env.LEASH_ZEFIX_TOKEN;
  499. if (tok) return 'Basic ' + Buffer.from(String(tok).trim()).toString('base64');
  500. const user = String(env.LEASH_ZEFIX_USERNAME || '').trim();
  501. const pass = String(env.LEASH_ZEFIX_PASSWORD || '').trim();
  502. if (user && pass) return 'Basic ' + Buffer.from(`${user}:${pass}`).toString('base64');
  503. return null;
  504. }
  506. function formatUid(raw) {
  507. const digits = String(raw || '').replace(/\D/g, '');
  508. if (digits.length !== 12 || !digits.startsWith('756')) {
  509. // Zefix UID IRIs use the 12-digit CHE number without the CHE prefix digits —
  510. // the IRI suffix is already CHE-shaped (e.g. CHE105904292).
  511. const m = String(raw || '').match(/CHE\s*(\d{3})\.?\s*(\d{3})\.?\s*(\d{3})/);
  512. return m ? `CHE-${m[1]}.${m[2]}.${m[3]}` : (raw || null);
  513. }
  514. return `CHE-${digits.slice(3, 6)}.${digits.slice(6, 9)}.${digits.slice(9)}`;
  515. }
  517. function normUid(u) {
  518. return String(u || '').toUpperCase().replace(/[^0-9]/g, '');
  519. }
  521. /** Compare imprint identity against the Zefix record. Pure. */
  522. export function compareImprintToRegistry(imprint, registry) {
  523. const nameScore = imprint.company_name && registry.company_name
  524. ? jaroWinkler(normalizeName(imprint.company_name), normalizeName(registry.company_name))
  525. : null;
  526. const cityMatch = Boolean(imprint.address?.city && registry.address?.city) &&
  527. normalizeName(imprint.address.city) === normalizeName(registry.address.city);
  528. const postalMatch = Boolean(imprint.address?.postal_code && registry.address?.postal_code) &&
  529. String(imprint.address.postal_code) === String(registry.address.postal_code);
  530. const streetMatch = Boolean(imprint.address?.street && registry.address?.street) &&
  531. normalizeName(imprint.address.street).includes(normalizeName(registry.address.street).replace(/\d+$/, '')) &&
  532. normalizeName(registry.address.street).includes(normalizeName(imprint.address.street).replace(/\d+$/, ''));
  533. const uidMatch = Boolean(imprint.uid && registry.uid) && normUid(imprint.uid) === normUid(registry.uid);
  535. let verdict = 'unknown';
  536. if (uidMatch) verdict = 'strong';
  537. else if (nameScore != null) {
  538. if (nameScore >= 0.9 && (cityMatch || postalMatch)) verdict = 'strong';
  539. else if (nameScore >= 0.92) verdict = 'strong';
  540. else if (nameScore >= 0.75 || ((cityMatch || postalMatch) && nameScore >= 0.6)) verdict = 'partial';
  541. else verdict = 'mismatch';
  542. } else if (cityMatch && postalMatch) verdict = 'partial';
  544. return { name_score: nameScore != null ? Math.round(nameScore * 100) / 100 : null, uid_match: uidMatch, city_match: cityMatch ? true : (cityMatch === false ? false : null), postal_match: postalMatch ? true : (postalMatch === false ? false : null), street_match: streetMatch ? true : (streetMatch === false ? false : null), verdict };
  545. }
  547. /** Plain-language summary bullets for the customer card. */
  548. export function summarize(d) {
  549. const pos = [], neg = [], unk = [];
  550. const r = d.registry, i = d.imprint;
  551. if (r?.status === 'found') {
  552. const uid = r.uid ? `, UID ${r.uid}` : '';
  553. pos.push(`Registered in the Swiss commercial register (Zefix): ${r.company_name}${uid}${r.address?.city ? `, seat ${r.address.city}` : ''}`);
  554. if (r.status_active === true) pos.push('Active in the commercial register');
  555. else if (r.status_active === false) neg.push(`Dissolved/deleted from the commercial register${r.deletion_date ? ` (as of ${r.deletion_date})` : ''}`);
  556. if (r.registration_date) pos.push(`Company registered since ${r.registration_date} (${r.age_years} year${r.age_years === 1 ? '' : 's'} old)`);
  557. else unk.push('Company age not available — the Zefix API does not expose registration dates');
  558. if (r.compare?.verdict === 'strong') pos.push('Imprint matches the registry entry (name and address agree)');
  559. else if (r.compare?.verdict === 'partial') unk.push('Imprint only partially matches the registry entry — check the address details');
  560. else if (r.compare?.verdict === 'mismatch') neg.push('Imprint does NOT match the registry entry — the site may be impersonating a real company');
  561. } else if (r?.status === 'not_found') {
  562. neg.push('No Swiss commercial-register entry found for this shop — either foreign or unregistered');
  563. } else if (r?.status === 'skipped' || r?.status === 'error') {
  564. unk.push('Swiss register lookup unavailable (no company name to search)');
  565. }
  566. if (i?.status === 'found') {
  567. const a = i.address;
  568. pos.push(`Impressum found: ${i.company_name}${a ? `, ${a.street}, ${a.postal_code} ${a.city}` : ''}`);
  569. } else if (i?.status === 'blocked') {
  570. unk.push('Website blocks automated reads — the imprint could not be verified');
  571. } else if (i?.status !== 'found') {
  572. neg.push('No readable Impressum (legal notice) found — Swiss/EU shops are required to publish one');
  573. }
  574. if (d.social.linkedin) pos.push('LinkedIn company page found');
  575. else unk.push('No LinkedIn company page found');
  576. if (d.social.instagram) pos.push('Instagram profile found');
  577. else unk.push('No Instagram profile found');
  578. if (d.payments.methods.length) pos.push(`Payment methods offered: ${d.payments.methods.join(', ')}`);
  579. else unk.push('Payment methods not detectable from the homepage');
  580. if (d.country.same_country === true) pos.push(`Based in ${d.country.merchant_country} — same country as you`);
  581. else if (d.country.same_country === false) neg.push(`Based in ${d.country.merchant_country} — not your country (${d.country.customer_country})`);
  582. else unk.push('Merchant country could not be determined');
  583. const ts = d.reviews.shop;
  584. if (ts?.listed === true && ts.rating != null) pos.push(`Trusted Shops: rated ${ts.rating}/5 from ${ts.review_count ?? '?'} reviews`);
  585. else if (ts?.listed === true) pos.push('Listed on Trusted Shops (no rating published)');
  586. else if (ts?.listed === false) unk.push('Not listed on Trusted Shops (neutral — many good shops are not members)');
  587. const pr = d.reviews.product;
  588. if (pr?.rating != null) pos.push(`Product page shows a rating of ${pr.rating}/${pr.best} (${pr.count ?? '?'} reviews)`);
  589. else if (d.product_url) unk.push('No product-level reviews found on the product page');
  590. if (d.error) unk.push(d.error);
  591. return { positives: pos, negatives: neg, unknowns: unk };
  592. }
  594. /** Tiny promise semaphore for bounded concurrency. */
  595. class Semaphore {
  596. constructor(n) { this.free = n; this.queue = []; }
  597. run(fn) {
  598. return new Promise((resolve) => {
  599. const start = () => fn().then((v) => { this.free++; this.#next(); return v; });
  600. if (this.free > 0) { this.free--; resolve(start); }
  601. else this.queue.push(() => { this.free--; resolve(start); });
  602. }).then((start) => start());
  603. }
  604. #next() { if (this.queue.length) this.queue.shift()(); }
  605. }