Expose Greatest source links and safe scraper inspection

greatest/hosters.js

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+'use strict';
+
+const normalize = value => String(value || '').normalize('NFKD').toLowerCase().replace(/[^a-z0-9]+/g, '');
+
+function seriesLink(value) {
+  let url;
+  try { url = new URL(String(value || '')); } catch { return null; }
+  if (url.protocol !== 'https:') return null;
+  const weeb = /^\/series\/([A-Z0-9]{26})(?:\/[^/?#]+)?\/?$/i.exec(url.pathname);
+  if (url.hostname === 'weebcentral.com' && weeb) return {
+    source: 'weebcentral', label: 'WeebCentral', seriesId: weeb[1].toUpperCase(),
+    url: `https://weebcentral.com${url.pathname.replace(/\/$/, '')}`,
+  };
+  const dex = /^\/title\/([0-9a-f]{8}-[0-9a-f]{4}-[1-5][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12})(?:\/[^/?#]+)?\/?$/i.exec(url.pathname);
+  if (['mangadex.org', 'www.mangadex.org'].includes(url.hostname) && dex) return {
+    source: 'mangadex', label: 'MangaDex', seriesId: dex[1].toLowerCase(),
+    url: `https://mangadex.org/title/${dex[1].toLowerCase()}`,
+  };
+  return null;
+}
+
+const keyOf = link => `${link.source}:${link.seriesId}`;
+
+function hosterLinks(entry, owned, queue = []) {
+  const names = new Set([entry.title, ...(entry.aliases || [])].map(normalize));
+  const known = new Map();
+  for (const source of owned?.meta?.sources || []) {
+    const link = seriesLink(source.url);
+    if (link) known.set(keyOf(link), { ...link, origin: 'library' });
+  }
+  const jobs = [];
+  for (const item of queue) {
+    const link = seriesLink(item.url);
+    if (!link) continue;
+    if (item.libraryMangaId && owned && item.libraryMangaId !== owned.id) continue;
+    if (!(owned && item.libraryMangaId === owned.id) && !names.has(normalize(item.title)) && !known.has(keyOf(link))) continue;
+    if (!known.has(keyOf(link))) known.set(keyOf(link), { ...link, origin: 'queue title match' });
+    jobs.push({ id: item.id, source: link.source, seriesId: link.seriesId, kind: item.kind, status: item.status });
+  }
+  return { links: [...known.values()], jobs };
+}
+
+module.exports = { seriesLink, hosterLinks };