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shopping.js

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  1. #!/usr/bin/env node
  2. /**
  3. * shopping.js — per-account shopping controls for the Viseca Shopper bridge.
  4. *
  5. * Zero-dependency companion to accounts.js. Three account-level controls:
  6. *
  7. * 1. Spend cap budget.max_total of any signed policy must be ≤ cap
  8. * 2. Website whitelist policy.merchant.allowed_domains must sit inside the
  9. * whitelist (exact or subdomain match). An empty
  10. * whitelist means "not restricted yet".
  11. * 3. Payment methods Visa / Mastercard cards in a local vault. The API
  12. * NEVER returns full card data — only brand + last4.
  13. * At sign time the bridge files the instrument for a
  14. * policy as policies/<policy_id>.payment.json in the
  15. * agent workspace (gitignored) so the agent can pay
  16. * at checkout without card numbers ever passing
  17. * through the model context.
  18. *
  19. * Files (under ACCOUNTS_DATA_DIR, default ./data):
  20. * shopping.json { users: { <uid>: { spendCapChf, whitelist, updatedAt } } }
  21. * vault.json { users: { <uid>: { methods: [...] } } } (chmod 0600)
  22. */
  24. const fs = require("fs");
  25. const path = require("path");
  26. const crypto = require("crypto");
  28. const DATA_DIR = process.env.ACCOUNTS_DATA_DIR || path.join(__dirname, "data");
  29. const SETTINGS_FILE = path.join(DATA_DIR, "shopping.json");
  30. const VAULT_FILE = path.join(DATA_DIR, "vault.json");
  32. const CARD_BRANDS = ["visa", "mastercard"];
  34. /* ---------- site catalog (curated; web search enriches on top) ---------- */
  36. const CATALOG = [
  37. // food delivery
  38. { domain: "ubereats.com", name: "Uber Eats", category: "Food delivery" },
  39. { domain: "justeat.ch", name: "Just Eat Switzerland", category: "Food delivery" },
  40. { domain: "smood.ch", name: "Smood", category: "Food delivery" },
  41. { domain: "deliveroo.ch", name: "Deliveroo", category: "Food delivery" },
  42. { domain: "pizza-hut.ch", name: "Pizza Hut CH", category: "Food delivery", agent_friendly: 0 },
  43. { domain: "mcdonalds.ch", name: "McDonald's CH", category: "Food delivery", agent_friendly: 0 },
  44. { domain: "dominos.ch", name: "Domino's Pizza CH", category: "Food delivery", agent_friendly: 1 },
  45. { domain: "lieferando.ch", name: "Lieferando", category: "Food delivery" },
  46. // groceries
  47. { domain: "migros.ch", name: "Migros Online", category: "Groceries" },
  48. { domain: "coop.ch", name: "Coop.ch", category: "Groceries" },
  49. { domain: "aldi-suisse.ch", name: "Aldi Suisse", category: "Groceries" },
  50. { domain: "lidl.ch", name: "Lidl Switzerland", category: "Groceries" },
  51. { domain: "volg.ch", name: "Volg Online", category: "Groceries" },
  52. { domain: "farmy.ch", name: "Farmy", category: "Groceries" },
  53. // electronics / general
  54. { domain: "digitec.ch", name: "Digitec", category: "Electronics" },
  55. { domain: "galaxus.ch", name: "Galaxus", category: "Marketplace" },
  56. { domain: "brack.ch", name: "Brack.ch", category: "Electronics" },
  57. { domain: "interdiscount.ch", name: "Interdiscount", category: "Electronics" },
  58. { domain: "microspot.ch", name: "Microspot", category: "Electronics" },
  59. { domain: "fust.ch", name: "Fust", category: "Electronics" },
  60. { domain: "melectronics.ch", name: "melectronics", category: "Electronics" },
  61. { domain: "manor.ch", name: "Manor", category: "Department store" },
  62. { domain: "jumbo.ch", name: "Jumbo", category: "DIY" },
  63. { domain: "hornbach.ch", name: "Hornbach", category: "DIY" },
  64. { domain: "oto.ch", name: "Oto.ch (Sconto)", category: "DIY" },
  65. // fashion
  66. { domain: "zalando.ch", name: "Zalando CH", category: "Fashion" },
  67. { domain: "aboutyou.ch", name: "About You", category: "Fashion" },
  68. { domain: "hm.com", name: "H&M", category: "Fashion" },
  69. { domain: "zara.com", name: "Zara", category: "Fashion" },
  70. { domain: "uniqlo.com", name: "Uniqlo", category: "Fashion" },
  71. { domain: "snoooze.ch", name: "Snoooze", category: "Fashion" },
  72. // marketplaces / intl
  73. { domain: "ricardo.ch", name: "Ricardo", category: "Marketplace" },
  74. { domain: "ebay.ch", name: "eBay.ch", category: "Marketplace" },
  75. { domain: "amazon.de", name: "Amazon.de", category: "Marketplace" },
  76. { domain: "aliexpress.com", name: "AliExpress", category: "Marketplace", agent_friendly: 1 },
  77. { domain: "temu.com", name: "Temu", category: "Marketplace" },
  78. { domain: "shein.com", name: "SHEIN", category: "Fashion" },
  79. { domain: "etsy.com", name: "Etsy", category: "Marketplace" },
  80. // pharmacy / drugstore
  81. { domain: "zurrose.ch", name: "Zur Rose", category: "Pharmacy" },
  82. { domain: "shop-apotheke.ch", name: "Shop Apotheke CH", category: "Pharmacy" },
  83. { domain: "dm.ch", name: "dm drogerie", category: "Drugstore" },
  84. // books / misc
  85. { domain: "exlibris.ch", name: "Ex Libris", category: "Books" },
  86. { domain: "orellfuessli.ch", name: "Orell Füssli", category: "Books" },
  87. { domain: "dds.ch", name: "DDS (Deutscher Buchdienst)", category: "Books" },
  88. ];
  90. const DOMAIN_RE = /^(?=.{1,253}$)(?!-)[a-z0-9-]{1,63}(?<!-)(\.(?!-)[a-z0-9-]{1,63}(?<!-))+$/;
  92. /** Unique category list from the catalog — the vocabulary for parental
  93. * category limits (family.js) and the site-search chips. */
  94. const CATEGORIES = [...new Set(CATALOG.map((e) => e.category))].sort();
  96. /* Web enrichment for the site search — off with SHOPPING_WEB_SEARCH=0 (tests,
  97. * air-gapped hosts). Catalog always answers regardless. */
  98. const WEB_SEARCH = process.env.SHOPPING_WEB_SEARCH !== "0";
  100. class ShoppingError extends Error {
  101. constructor(status, message) { super(message); this.status = status; }
  102. }
  104. /* ---------- store plumbing ---------- */
  106. let settings = { users: {} }; // uid -> { spendCapChf, whitelist, updatedAt }
  107. let vault = { users: {} }; // uid -> { methods: [...] }
  109. function load() {
  110. fs.mkdirSync(DATA_DIR, { recursive: true });
  111. try {
  112. const j = JSON.parse(fs.readFileSync(SETTINGS_FILE, "utf8"));
  113. if (j && typeof j.users === "object") settings = j;
  114. } catch { /* first boot */ }
  115. try {
  116. const j = JSON.parse(fs.readFileSync(VAULT_FILE, "utf8"));
  117. if (j && typeof j.users === "object") vault = j;
  118. } catch { /* first boot */ }
  119. }
  121. function atomicWrite(file, obj, mode) {
  122. const tmp = `${file}.tmp-${process.pid}`;
  123. fs.writeFileSync(tmp, JSON.stringify(obj, null, 2));
  124. if (mode) fs.chmodSync(tmp, mode);
  125. fs.renameSync(tmp, file);
  126. }
  128. function saveSettings() { atomicWrite(SETTINGS_FILE, settings); }
  129. function saveVault() { atomicWrite(VAULT_FILE, vault, 0o600); }
  131. function userSettings(uid) {
  132. if (!settings.users[uid]) {
  133. settings.users[uid] = { spendCapChf: null, whitelist: [], updatedAt: new Date().toISOString() };
  134. saveSettings();
  135. }
  136. return settings.users[uid];
  137. }
  139. function userVault(uid) {
  140. if (!vault.users[uid]) {
  141. vault.users[uid] = { methods: [] };
  142. saveVault();
  143. }
  144. return vault.users[uid];
  145. }
  147. /* ---------- spend cap ---------- */
  149. function getSpendCap(uid) { return userSettings(uid).spendCapChf; }
  151. function setSpendCap(uid, capChf) {
  152. let cap = capChf;
  153. if (cap !== null && cap !== undefined && cap !== "") {
  154. cap = Number(capChf);
  155. if (!Number.isFinite(cap) || cap <= 0) throw new ShoppingError(400, "capChf must be a positive number (or null to remove the cap).");
  156. cap = Math.round(cap * 100) / 100;
  157. if (cap > 100000) throw new ShoppingError(400, "capChf is unreasonably large (max 100'000).");
  158. } else {
  159. cap = null;
  160. }
  161. const s = userSettings(uid);
  162. s.spendCapChf = cap;
  163. s.updatedAt = new Date().toISOString();
  164. saveSettings();
  165. return cap;
  166. }
  168. /* ---------- website whitelist ---------- */
  170. /** Normalize arbitrary user/agent input to a bare registrable-ish domain:
  171. * "https://www.ubereats.com/ch/en/" -> "ubereats.com". Throws 400 on junk. */
  172. function normalizeDomain(raw) {
  173. let d = String(raw || "").trim().toLowerCase();
  174. if (!d) throw new ShoppingError(400, "Domain is required.");
  175. d = d.replace(/^[a-z][a-z0-9+.-]*:\/\//, ""); // scheme
  176. d = d.split("/")[0].split("?")[0].split("#")[0];
  177. d = d.replace(/:\d+$/, ""); // port
  178. if (d.startsWith("www.")) d = d.slice(4);
  179. if (!DOMAIN_RE.test(d)) throw new ShoppingError(400, `'${String(raw).slice(0, 80)}' is not a valid website domain (e.g. ubereats.com).`);
  180. if (d.length > 253) throw new ShoppingError(400, "Domain too long.");
  181. return d;
  182. }
  184. function getWhitelist(uid) { return userSettings(uid).whitelist.slice(); }
  186. function addWhitelist(uid, rawDomain) {
  187. const d = normalizeDomain(rawDomain);
  188. const s = userSettings(uid);
  189. // also accept when the user adds a subdomain of something already listed
  190. if (s.whitelist.some((w) => d === w || d.endsWith(`.${w}`))) {
  191. return { whitelist: getWhitelist(uid), added: d, already: true };
  192. }
  193. // a broader domain already covering the new entry? keep both — the user asked
  194. // for this site explicitly; dedupe only exact/narrower duplicates
  195. s.whitelist.push(d);
  196. s.whitelist.sort();
  197. s.updatedAt = new Date().toISOString();
  198. saveSettings();
  199. return { whitelist: getWhitelist(uid), added: d, already: false };
  200. }
  202. function removeWhitelist(uid, rawDomain) {
  203. const d = normalizeDomain(rawDomain);
  204. const s = userSettings(uid);
  205. const before = s.whitelist.length;
  206. s.whitelist = s.whitelist.filter((w) => w !== d);
  207. s.updatedAt = new Date().toISOString();
  208. saveSettings();
  209. return { whitelist: getWhitelist(uid), removed: before - s.whitelist.length };
  210. }
  212. /** Is `domain` covered by the whitelist? Exact or subdomain of an entry. */
  213. function whitelisted(list, domain) {
  214. return list.some((w) => domain === w || domain.endsWith(`.${w}`));
  215. }
  217. /** Map merchant domains to catalog categories — how a policy gets its
  218. * categories for parental limits. Unknown domains are skipped by the caller
  219. * (family.js maps them to "Other"). Subdomains count (food.ubereats.com →
  220. * Food delivery). */
  221. function categoriesForDomains(domains) {
  222. const cats = [];
  223. for (const raw of domains || []) {
  224. let d;
  225. try { d = normalizeDomain(raw); } catch { continue; }
  226. const hit = CATALOG.find((e) => d === e.domain || d.endsWith(`.${e.domain}`));
  227. if (hit && !cats.includes(hit.category)) cats.push(hit.category);
  228. }
  229. return cats;
  230. }
  232. /* ---------- site search (catalog + best-effort web) ---------- */
  234. const searchCache = new Map(); // q -> { ts, results }
  235. const SEARCH_TTL_MS = 10 * 60 * 1000;
  237. /* Agent-friendly gate. data/merchants.json `agent_friendly: 0` marks shops that
  238. * bot-wall automated shoppers (DataDome, Cloudflare, Akamai, … — measured by
  239. * scripts/agent-friendly-check.mjs). They never surface in catalog site
  240. * search, so the shopping agent only discovers agent-friendly shops.
  241. * The dataset is repo-level (same file server.js MERCHANTS_FILE reads) — NOT
  242. * account data — so it stays at __dirname/data regardless of
  243. * ACCOUNTS_DATA_DIR; MERCHANTS_JSON_PATH overrides for tests. Missing file →
  244. * no exclusions (fail-open; whitelist still gates purchases). 60s cache,
  245. * same as server.js merchantsData(). */
  246. let agentBlockedCache = { at: 0, set: null };
  247. function agentBlockedSet() {
  248. if (!agentBlockedCache.set || Date.now() - agentBlockedCache.at > 60_000) {
  249. const set = new Set();
  250. try {
  251. const file = process.env.MERCHANTS_JSON_PATH || path.join(__dirname, "data", "merchants.json");
  252. const db = JSON.parse(fs.readFileSync(file, "utf8"));
  253. for (const m of db.merchants || []) {
  254. if (m.agent_friendly === 0) set.add(String(m.domain).replace(/^www\./, ""));
  255. }
  256. } catch { /* file missing or unreadable → empty exclusion set */ }
  257. agentBlockedCache = { at: Date.now(), set };
  258. }
  259. return agentBlockedCache.set;
  260. }
  261. function agentFriendly(entry) {
  262. if (entry.agent_friendly === 0) return false; // inline flag for non-dataset catalog entries
  263. return !agentBlockedSet().has(entry.domain);
  264. }
  266. function catalogSearch(q) {
  267. const needle = String(q || "").trim().toLowerCase();
  268. if (!needle) return [];
  269. return CATALOG.filter((e) =>
  270. agentFriendly(e) && (e.domain.includes(needle) || e.name.toLowerCase().includes(needle) || e.category.toLowerCase().includes(needle))
  271. ).map((e) => ({ domain: e.domain, name: e.name, category: e.category, source: "catalog" }));
  272. }
  274. /** Best-effort DuckDuckGo HTML lookup — never throws, adds domains the catalog
  275. * misses. 4s timeout; silently empty on any failure (proxy/bot wall). */
  276. async function webSearchDomains(q) {
  277. if (!WEB_SEARCH) return [];
  278. try {
  279. const url = `https://html.duckduckgo.com/html/?q=${encodeURIComponent(`${q} online shop`)}`;
  280. const r = await fetch(url, {
  281. headers: { "User-Agent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 viseca-shopper-ui" },
  282. signal: AbortSignal.timeout(4000),
  283. });
  284. if (!r.ok) return [];
  285. const html = await r.text();
  286. const hosts = new Map();
  287. const re = /uddg=([^"&]+)/g;
  288. let m;
  289. while ((m = re.exec(html)) !== null) {
  290. let u;
  291. try { u = decodeURIComponent(m[1]); } catch { continue; }
  292. try {
  293. const h = new URL(u).hostname.toLowerCase().replace(/^www\./, "");
  294. if (DOMAIN_RE.test(h) && !/(duckduckgo|ddg)\./.test(h)) hosts.set(h, h);
  295. } catch { continue; }
  296. if (hosts.size >= 12) break;
  297. }
  298. return [...hosts.keys()].map((h) => ({ domain: h, name: h, category: "web result", source: "web" }));
  299. } catch {
  300. return [];
  301. }
  302. }
  304. async function searchSites(q) {
  305. const needle = String(q || "").trim();
  306. if (needle.length < 2) return [];
  307. const key = needle.toLowerCase();
  308. const cached = searchCache.get(key);
  309. if (cached && Date.now() - cached.ts < SEARCH_TTL_MS) return cached.results;
  310. let results = catalogSearch(needle);
  311. if (results.length < 5) {
  312. const web = await webSearchDomains(needle);
  313. const seen = new Set(results.map((r) => r.domain));
  314. for (const w of web) {
  315. if (!seen.has(w.domain)) { results.push(w); seen.add(w.domain); }
  316. }
  317. }
  318. results = results.slice(0, 12);
  319. searchCache.set(key, { ts: Date.now(), results });
  320. return results;
  321. }
  323. /* ---------- payment methods (vault) ---------- */
  325. function luhn(num) {
  326. const digits = num.replace(/[\s-]/g, "");
  327. let sum = 0;
  328. let dbl = false;
  329. for (let i = digits.length - 1; i >= 0; i -= 1) {
  330. let d = digits.charCodeAt(i) - 48;
  331. if (d < 0 || d > 9) return false;
  332. if (dbl) { d *= 2; if (d > 9) d -= 9; }
  333. sum += d;
  334. dbl = !dbl;
  335. }
  336. return sum % 10 === 0;
  337. }
  339. function detectBrand(num) {
  340. const n = num.replace(/[\s-]/g, "");
  341. if (/^4\d{12,18}$/.test(n)) return "visa";
  342. if (/^(5[1-5]\d{14}|2[2-7]\d{14})$/.test(n)) return "mastercard";
  343. return null;
  344. }
  346. function normalizeExp(raw) {
  347. const m = /^(0?[1-9]|1[0-2])\s*\/\s*(\d{2}|\d{4})$/.exec(String(raw || "").trim());
  348. if (!m) return null;
  349. const mm = String(Number(m[1])).padStart(2, "0");
  350. let yy = m[2];
  351. if (yy.length === 4) yy = yy.slice(2);
  352. const exp = `${mm}/${yy}`;
  353. const [y, mo] = [2000 + Number(yy), Number(mm)];
  354. const endOfMonth = new Date(y, mo, 1) - 1; // last millisecond of expiry month
  355. if (endOfMonth < Date.now()) return null;
  356. return exp;
  357. }
  359. function listMethods(uid) {
  360. return userVault(uid).methods.map(maskedMethod);
  361. }
  363. function maskedMethod(m) {
  364. return { id: m.id, brand: m.brand, last4: m.last4, holder: m.holder, exp: m.exp, isDefault: Boolean(m.isDefault), created: m.created };
  365. }
  367. function addMethod(uid, { holder, number, exp, cvc }) {
  368. const h = String(holder || "").trim();
  369. if (h.length < 3 || h.length > 80) throw new ShoppingError(400, "Cardholder name is required.");
  370. const digits = String(number || "").replace(/[\s-]/g, "");
  371. if (!/^\d{12,19}$/.test(digits)) throw new ShoppingError(400, "Card number must be 12–19 digits.");
  372. if (!luhn(digits)) throw new ShoppingError(400, "That card number fails the checksum (Luhn) test — please re-check it.");
  373. const brand = detectBrand(digits);
  374. if (!brand) throw new ShoppingError(400, "Only Visa or Mastercard are supported.");
  375. const expOk = normalizeExp(exp);
  376. if (!expOk) throw new ShoppingError(400, "Expiry must be a future date in MM/YY format.");
  377. const cvcOk = String(cvc || "").trim();
  378. if (!/^\d{3,4}$/.test(cvcOk)) throw new ShoppingError(400, "CVC must be 3–4 digits.");
  379. const mv = userVault(uid);
  380. if (mv.methods.some((m) => m.number === digits)) throw new ShoppingError(409, "That card is already saved.");
  381. const rec = {
  382. id: `pm_${crypto.randomBytes(4).toString("hex")}`,
  383. brand,
  384. last4: digits.slice(-4),
  385. holder: h,
  386. exp: expOk,
  387. cvc: cvcOk,
  388. number: digits,
  389. isDefault: mv.methods.length === 0,
  390. created: new Date().toISOString(),
  391. };
  392. mv.methods.push(rec);
  393. saveVault();
  394. return { record: maskedMethod(rec), method: rec };
  395. }
  397. function deleteMethod(uid, id) {
  398. const mv = userVault(uid);
  399. const i = mv.methods.findIndex((m) => m.id === id);
  400. if (i === -1) return false;
  401. mv.methods.splice(i, 1);
  402. if (mv.methods.length && !mv.methods.some((m) => m.isDefault)) mv.methods[0].isDefault = true;
  403. saveVault();
  404. return true;
  405. }
  407. function setDefaultMethod(uid, id) {
  408. const mv = userVault(uid);
  409. const hit = mv.methods.find((m) => m.id === id);
  410. if (!hit) return false;
  411. mv.methods.forEach((m) => { m.isDefault = m.id === id; });
  412. saveVault();
  413. return true;
  414. }
  416. /** Pick the instrument for a policy: brand hinted by policy.payment.method
  417. * ("mastercard gold", "visa") wins over the default; else default; else null. */
  418. function pickMethod(uid, hint) {
  419. const mv = userVault(uid);
  420. if (!mv.methods.length) return null;
  421. const h = String(hint || "").toLowerCase();
  422. if (h) {
  423. const byBrand = mv.methods.find((m) => h.includes(m.brand === "mastercard" ? "master" : m.brand));
  424. if (byBrand) return byBrand;
  425. }
  426. return mv.methods.find((m) => m.isDefault) || mv.methods[0];
  427. }
  429. /* ---------- policy enforcement (sign-time) ---------- */
  431. /** Check a draft policy against the account's spend cap and whitelist.
  432. * Returns { ok: true } or { ok: false, violations: [ "...", ... ] }. */
  433. function checkPolicyAgainstSettings(uid, policy) {
  434. const s = userSettings(uid);
  435. const violations = [];
  436. const budget = policy && policy.budget;
  437. if (s.spendCapChf != null && budget && typeof budget.max_total === "number" && budget.max_total > s.spendCapChf) {
  438. violations.push(
  439. `budget.max_total ${budget.max_total} ${budget.currency || "CHF"} exceeds your spending cap of ${s.spendCapChf} CHF — raise the cap in Account → Shopping, or lower the budget.`
  440. );
  441. }
  442. const wl = s.whitelist;
  443. if (wl.length) {
  444. const domains = ((policy && policy.merchant) || {}).allowed_domains;
  445. if (!Array.isArray(domains) || domains.length === 0) {
  446. violations.push(
  447. "merchant.allowed_domains is required: your website whitelist is active and already on file — the agent must re-propose (new policy) with merchant.allowed_domains set to whitelisted shop domain(s). No settings change is needed."
  448. );
  449. } else {
  450. const bad = domains.filter((d) => {
  451. try { return !whitelisted(wl, normalizeDomain(d)); } catch { return true; }
  452. });
  453. if (bad.length) {
  454. violations.push(
  455. `merchant.allowed_domains not whitelisted: ${bad.join(", ")}. The agent must re-propose buying only from whitelisted domain(s) — add ${bad.length === 1 ? "it" : "them"} under Account → Shopping → Whitelisted websites only if you actually want ${bad.length === 1 ? "that shop" : "those shops"} allowed.`
  456. );
  457. }
  458. }
  459. }
  460. return violations.length ? { ok: false, violations } : { ok: true };
  461. }
  463. /* ---------- per-customer delivery address ---------- */
  465. const DELIVERY_LIMITS = { street: 160, zip: 16, city: 80, country: 80 };
  467. /** This account's delivery address on file, or null. Per-account by design:
  468. * a shared agent workspace must never fall back to a global default. */
  469. function getDelivery(uid) {
  470. const d = userSettings(uid).delivery;
  471. return d && typeof d === "object" ? { ...d } : null;
  472. }
  474. function deliveryAddressString(d) {
  475. if (!d || typeof d !== "object") return "";
  476. return [d.street, `${d.zip} ${d.city}`.trim(), d.country].filter(Boolean).join(", ");
  477. }
  479. /** Validate + store this account's delivery address. Throws ShoppingError(400). */
  480. function setDelivery(uid, body) {
  481. if (!body || typeof body !== "object" || Array.isArray(body)) {
  482. throw new ShoppingError(400, "Delivery address must be an object.");
  483. }
  484. const out = {};
  485. for (const [field, max] of Object.entries(DELIVERY_LIMITS)) {
  486. let v = body[field];
  487. if (field === "country" && (v == null || String(v).trim() === "")) v = "Switzerland";
  488. if (typeof v !== "string" || !v.trim()) throw new ShoppingError(400, `Delivery "${field}" is required.`);
  489. v = v.trim();
  490. if (v.length > max) throw new ShoppingError(400, `Delivery "${field}" is too long (max ${max} chars).`);
  491. if (/[\n\r]/.test(v)) throw new ShoppingError(400, `Delivery "${field}" must be a single line.`);
  492. out[field] = v;
  493. }
  494. if (!/^[A-Za-z0-9][A-Za-z0-9\- ]*$/.test(out.zip)) throw new ShoppingError(400, 'Delivery "zip" looks invalid.');
  495. const s = userSettings(uid);
  496. s.delivery = { ...out, updatedAt: new Date().toISOString() };
  497. saveSettings();
  498. return { ...s.delivery };
  499. }
  501. /* ---------- payment handoff to the agent workspace ---------- */
  503. /** File the instrument for one signed policy. The agent reads this file at the
  504. * payment phase — card data never travels through the model context. */
  505. function writePaymentFile(policyDir, policyId, method, extraNote) {
  506. const body = {
  507. policy_id: policyId,
  508. filed_at: new Date().toISOString(),
  509. source: "account card vault (bridge)",
  510. instruction: method
  511. ? "Use exactly this card for checkout of this order only. Never echo the full number, CVC, or expiry into the chat or the receipt — refer to it as brand + last4."
  512. : "No card on file. Do NOT ask the customer for card details in chat; tell them to add a Visa/Mastercard under Account → Shopping in the web UI, then try the payment phase again.",
  513. card: method
  514. ? { brand: method.brand, last4: method.last4, holder: method.holder, exp: method.exp, number: method.number, cvc: method.cvc }
  515. : null,
  516. note: extraNote || null,
  517. };
  518. fs.mkdirSync(policyDir, { recursive: true });
  519. const p = path.join(policyDir, `${policyId}.payment.json`);
  520. fs.writeFileSync(p, JSON.stringify(body, null, 2));
  521. return p;
  522. }
  524. module.exports = {
  525. CARD_BRANDS,
  526. CATEGORIES,
  527. ShoppingError,
  528. load,
  529. getSpendCap, setSpendCap,
  530. getWhitelist, addWhitelist, removeWhitelist, normalizeDomain, whitelisted, categoriesForDomains,
  531. searchSites,
  532. listMethods, addMethod, deleteMethod, setDefaultMethod, pickMethod, maskedMethod,
  533. checkPolicyAgainstSettings,
  534. getDelivery, setDelivery, deliveryAddressString,
  535. writePaymentFile,
  536. };