https://starwarsdatabase.com/gallery/src/inspection.js?v=0.67.1

1// Public value normalization and item-reference links follow the owner’s Vault inspection.
2const VALUE_PRICE = /^\$[0-9]{1,7}(?:,[0-9]{3})*(?:\.[0-9]{2})?$/;
3const VALUE_URL = /^https:\/\/[A-Za-z0-9.-]+(?::[0-9]+)?(?:\/[^\s]*)?$/;
4const JET_DOT_COM = /(?:^|[^a-z0-9])jet\.com(?:[^a-z0-9]|$)/i;
5const REFERENCE_ONLY_MARKETPLACES = new Set(['ebay', 'ebay.com', 'mercari', 'mercari.com']);
6
7function normalizeGtin(value) {
8  if (typeof value !== 'string' || !/^(?:[0-9]{8}|[0-9]{12,14})$/.test(value.trim())) return null;
9  const gtin = value.trim();
10  const digits = [...gtin].map(Number);
11  const checkDigit = digits.pop();
12  let sum = 0;
13  let weight = 3;
14  for (let index = digits.length - 1; index >= 0; index -= 1) {
15    sum += digits[index] * weight;
16    weight = weight === 3 ? 1 : 3;
17  }
18  return (10 - (sum % 10)) % 10 === checkDigit ? gtin : null;
19}
20
21function isJetMerchant(source, url) {
22  const normalizedSource = source.trim().toLowerCase();
23  if (normalizedSource === 'jet' || normalizedSource === 'jet.com' || JET_DOT_COM.test(normalizedSource)) return true;
24  if (!url) return false;
25  try {
26    const host = new URL(url).hostname.toLowerCase();
27    return host === 'jet.com' || host.endsWith('.jet.com');
28  } catch {
29    return false;
30  }
31}
32
33function isReferenceOnlyMerchant(source, url) {
34  if (REFERENCE_ONLY_MARKETPLACES.has(source.trim().toLowerCase())) return true;
35  if (!url) return false;
36  try {
37    const host = new URL(url).hostname.toLowerCase();
38    return host === 'ebay.com' || host.endsWith('.ebay.com') || host === 'mercari.com' || host.endsWith('.mercari.com');
39  } catch {
40    return false;
41  }
42}
43
44function itemSourceLinks(value) {
45  const gtin = normalizeGtin(value);
46  if (gtin === null) return Object.freeze([]);
47  const encoded = encodeURIComponent(gtin);
48  return Object.freeze([
49    { source: 'Barcode Lookup', url: `https://www.barcodelookup.com/${encoded}` },
50    { source: 'Barcode Spider', url: `https://www.barcodespider.com/${encoded}` },
51    { source: "Brian's Toys", url: `https://www.brianstoys.com/catalogsearch/result/?q=${encoded}` },
52    { source: 'eBay', url: `https://www.ebay.com/sch/i.html?_nkw=${encoded}&_sop=16` },
53    { source: 'Google Images', url: `https://www.google.com/search?q=${encoded}&source=lnms&sa=X&udm=2` },
54    { source: 'Mercari', url: `https://www.mercari.com/search/?keyword=${encoded}` },
55  ].sort((left, right) => left.source.localeCompare(right.source, 'en', { sensitivity: 'base' }))
56    .map((link) => Object.freeze(link)));
57}
58
59function normalizeValueInformation(payload) {
60  if (!payload || typeof payload !== 'object' || Array.isArray(payload)) return null;
61  const allowedRoot = new Set(['schema_version', 'checked_at', 'offers']);
62  if (Object.keys(payload).some((key) => !allowedRoot.has(key)) || !Array.isArray(payload.offers)) return null;
63  const offers = [];
64  for (const candidate of payload.offers.slice(0, 24)) {
65    if (!candidate || typeof candidate !== 'object' || Array.isArray(candidate)) continue;
66    const allowedOffer = new Set(['source', 'title', 'price', 'currency', 'url']);
67    if (Object.keys(candidate).some((key) => !allowedOffer.has(key))) continue;
68    const source = typeof candidate.source === 'string' ? candidate.source.trim().slice(0, 120) : '';
69    const title = typeof candidate.title === 'string' ? candidate.title.trim().slice(0, 240) : '';
70    const price = typeof candidate.price === 'string' ? candidate.price.trim() : '';
71    const currency = candidate.currency === 'USD' ? 'USD' : null;
72    const url = typeof candidate.url === 'string' && VALUE_URL.test(candidate.url) ? candidate.url : null;
73    if (!source || !title || !VALUE_PRICE.test(price) || currency === null
74      || isJetMerchant(source, url) || isReferenceOnlyMerchant(source, url)) continue;
75    offers.push(Object.freeze({ source, title, price, currency, url }));
76  }
77  if (offers.length === 0) return null;
78  offers.sort((left, right) => left.source.localeCompare(right.source, 'en', { sensitivity: 'base' })
79    || left.title.localeCompare(right.title, 'en', { sensitivity: 'base' })
80    || left.price.localeCompare(right.price, 'en', { numeric: true }));
81  const checkedAt = typeof payload.checked_at === 'string' && /^\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}Z$/.test(payload.checked_at)
82    ? payload.checked_at
83    : null;
84  return Object.freeze({ checkedAt, offers: Object.freeze(offers) });
85}
86
87export {normalizeGtin,itemSourceLinks,normalizeValueInformation};