styles.css

export async function fetchCommonsImageMetadata(fileTitle) {
  if (!fileTitle) return null;
  const title = fileTitle.startsWith("File:") ? fileTitle : `File:${fileTitle}`;
  const params = new URLSearchParams({
    action: "query",
    format: "json",
    origin: "*",
    prop: "imageinfo",
    iiprop: "url|extmetadata",
    titles: title
  });
  const res = await fetch(`https://commons.wikimedia.org/w/api.php?${params.toString()}`, { headers: { "User-Agent": "openARTlasAtlas/5.0" } });
  if (!res.ok) throw new Error(`Commons failed: ${res.status}`);
  const json = await res.json();
  const page = Object.values(json.query?.pages || {})[0];
  const info = page?.imageinfo?.[0];
  if (!info) return null;
  return {
    url: info.url,
    credit: stripHtml(info.extmetadata?.Artist?.value || info.extmetadata?.Credit?.value || "Wikimedia Commons"),
    license: stripHtml(info.extmetadata?.LicenseShortName?.value || "Open license via Commons"),
    sourceUrl: info.descriptionurl
  };
}
function stripHtml(value) {
  return String(value || "").replace(/<[^>]+>/g, "").replace(/\s+/g, " ").trim();
}