Function fetchFolderStats

public/js/fileListView.js:3136–3174

(folder, sourceId = '')

}

function fetchFolderStats(folder, sourceId = '') {
  if (!folder) return Promise.resolve(null);
  if (isSlowRemoteSource(sourceId)) return Promise.resolve(null);

  const key = folderCacheKey(folder, sourceId);
  if (_folderStatsCache.has(key)) {
    return Promise.resolve(_folderStatsCache.get(key));
  }
  if (_folderStatsInflight.has(key)) {
    return _folderStatsInflight.get(key);
  }

  const sourceParam = sourceId ? `&sourceId=${encodeURIComponent(sourceId)}` : '';
  const url = withBase(`/api/folder/isEmpty.php?folder=${encodeURIComponent(folder)}${sourceParam}&t=${Date.now()}`);
  const timeoutMs = getFolderStatsTimeout(sourceId);
  const p = _runFolderStats(url, timeoutMs).then(data => {
    const payload = (data && !data.__fr_err) ? data : { folders: 0, files: 0 };
    const stillInflight = _folderStatsInflight.get(key) === p;
    if (stillInflight) {
      _folderStatsInflight.delete(key);
    }
    // If this was a transient network/server failure, don't poison the cache.
    if (data && data.__fr_err) {
      return payload;
    }
    if (stillInflight) {
      _folderStatsCache.set(key, payload);
    }
    return payload;
  }).catch(() => {
    if (_folderStatsInflight.get(key) === p) {
      _folderStatsInflight.delete(key);
    }
    return { folders: 0, files: 0 };
  });

  _folderStatsInflight.set(key, p);
  return p;
}

function fetchFolderSummaryStats(folder, depthOverride, sourceId = '') {
  if (!folder) return Promise.resolve(null);