/**
 * tree.ts — File tree browser page module.
 *
 * The tree is fully SSR'd. This module only handles the branch selector
 * navigation, which requires JS to redirect on change.
 *
 * Registered as: window.MusePages['tree']
 */

export function initTree(data: Record<string, unknown>): void {
  const base      = String(data.base     ?? '');
  const dirPath   = String(data.dir_path ?? '');
  const pathSuffix = dirPath ? '/' + dirPath : '';

  const sel = document.getElementById('branch-sel') as HTMLSelectElement | null;
  sel?.addEventListener('change', () => {
    window.location.href = base + '/tree/' + encodeURIComponent(sel.value) + pathSuffix;
  });
}