check-links.mjs

export async function fetchWikidataVenuesNearCity({ city, lat, lon, radiusKm = 30, limit = 120 }) {
  const query = `
SELECT ?item ?itemLabel ?coord ?image ?official ?instanceLabel WHERE {
  SERVICE wikibase:around {
    ?item wdt:P625 ?coord.
    bd:serviceParam wikibase:center "Point(${lon} ${lat})"^^geo:wktLiteral.
    bd:serviceParam wikibase:radius "${radiusKm}".
  }
  VALUES ?type { wd:Q33506 wd:Q207694 wd:Q570116 wd:Q17431399 wd:Q839954 wd:Q4830453 wd:Q570116 }
  ?item wdt:P31/wdt:P279* ?type.
  OPTIONAL { ?item wdt:P18 ?image. }
  OPTIONAL { ?item wdt:P856 ?official. }
  OPTIONAL { ?item wdt:P31 ?instance. }
  SERVICE wikibase:label { bd:serviceParam wikibase:language "en". }
}
LIMIT ${limit}`;
  const url = "https://query.wikidata.org/sparql?format=json&query=" + encodeURIComponent(query);
  const res = await fetch(url, { headers: { "Accept": "application/sparql-results+json", "User-Agent": "openARTlasAtlas/5.0" } });
  if (!res.ok) throw new Error(`Wikidata failed for ${city}: ${res.status}`);
  const json = await res.json();
  return json.results.bindings.map(binding => ({ source: "wikidata", city, binding }));
}