Thumbnail logo detection ignores logos already recorded in manifest.shared

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Bewertung

Schwierigkeit
2/5
Geschätzter Aufwand
1-3 Stunden
Anfängerfreundlichkeit
84/100
Issue-Typ
Bug
Klarheit
Klar beschrieben
Aktivitätsstatus
Aktiv
Tech-Stack
javascript, node.js
Bereich
backend, data

Rechercherichtung

Lies die Schleife zum Ablegen gemeinsamer Logos in site/thumbs.mjs:311-318 und sharedImageIds in site/lib/thumbs.mjs:162-172. Sieh dir dann den bestehenden sharedImageIds-Test in site/lib/lib.test.mjs an. Füge einen Test für einen neuen Datensatz hinzu, dessen Hash bereits in shared vorhanden ist, und führe npm test aus. Fertig ist die Aufgabe, wenn der neue Datensatz nach shared verschoben wird und der Test besteht.

Vom Indexierungsmodell aus dem Issue-Text verfasst.

Beschreibung

bug good first issue priority: medium

Summary

The three-or-more shared-hash rule that keeps publisher logos out of thumbnails only counts records fetched in the current run, so a logo that was already dropped into manifest.shared is accepted again when a single new entry from the same site is fetched.

Where

  • site/thumbs.mjs:311-318 (logo drop loop)
  • site/thumbs.mjs:263-266 (shared skip)
  • site/lib/thumbs.mjs:162-172 (sharedImageIds)

Details

for (const id of sharedImageIds(thumbs)) {   // counts hashes in `thumbs` only
  shared[id] = thumbs[id];
  delete thumbs[id];
  pending.delete(id);
}
for (const id of Object.keys(thumbs)) delete shared[id];

Records dropped in an earlier run live in shared, not thumbs, so they never count toward the limit again. The existing test (site/lib/lib.test.mjs, the sharedImageIds case) only covers three records sitting in thumbs together.

Impact

A publisher's site-wide logo or social card is published as an asset preview with a "Preview image shown under " credit, which is the case the shared-hash rule (#132) exists to block.

Steps to reproduce

  1. Entries A, B and C on one site share an og:image; a run drops them into manifest.shared.
  2. Add entry D from the same site (or change A's url).
  3. Run node site/thumbs.mjs: D's image hash appears once in thumbs, below the limit, so D keeps the logo. Pure check: sharedImageIds({ D: { hash: "h" } }) is empty even when shared holds three records with hash h.

Suggested fix

Count hashes across { ...shared, ...thumbs } and drop only the ids that are in thumbs; or keep a set of known logo hashes and reject any fetched image whose hash is in it.

Acceptance criteria

  • A newly fetched record whose hash matches a hash already in shared is moved to shared
  • Unit test: one new record plus an already recorded shared hash

Getting started

  • Relevant files: site/thumbs.mjs, site/lib/thumbs.mjs, site/lib/lib.test.mjs
  • Run the tests: npm test; the full local gate is npm run check (Node 22+, no install step)
  • Related docs: CONTRIBUTING.md, site/README.md

Related: #232, #132


Filed by repo-audit/full-audit at 4adb944. Severity: medium. Effort: S. audit-key: bug|site/thumbs.mjs|sharedImageIds

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JavaScript
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58
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Gemergte PRs (30 T.)
12

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  4. Öffnen Sie einen Pull Request, der die Issue-Nummer nennt.

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