Function findTrackBySource

static/js/catalog.js:155–163

(sourceUrl, exceptId)

}

function findTrackBySource(sourceUrl, exceptId) {
  const source = normalizeSource(sourceUrl);
  if (!source) return null;
  for (const [id, track] of Object.entries(tracks)) {
    if (id === exceptId) continue;
    if (normalizeSource(track.sourceUrl) === source) return id;
  }
  return null;
}

function replaceTrackId(oldId, newId) {
  if (!oldId || !newId || oldId === newId || !tracks[oldId]) return;