write static method

BundleWriteResult write(String baseDir, Bundle bundle)

Write bundle under baseDir. Immutable objects (b/<version>/…) are written only if absent — re-publishing identical content is a no-op. The channel head is written last (after every immutable object), so a reader never sees a head pointing at an incomplete bundle.

Implementation

static BundleWriteResult write(String baseDir, Bundle bundle) {
  final versionDir = p.join(baseDir, 'b', bundle.version);
  final manifestPath = p.join(versionDir, 'manifest.json');
  final alreadyPublished = File(manifestPath).existsSync();

  final written = <String>[];
  if (!alreadyPublished) {
    Directory(versionDir).createSync(recursive: true);
    File(manifestPath).writeAsStringSync(bundle.manifestJson);
    written.add(p.join(bundle.versionDir, 'manifest.json'));
    for (final l in bundle.locales) {
      File(p.join(versionDir, l.file)).writeAsStringSync(l.content);
      written.add(p.join(bundle.versionDir, l.file));
    }
  }

  final headPath = p.join(baseDir, 'manifest.json');
  final head = bundle.channelHeadJson;
  final headChanged =
      !File(headPath).existsSync() ||
      File(headPath).readAsStringSync() != head;
  if (headChanged) {
    Directory(baseDir).createSync(recursive: true);
    File(headPath).writeAsStringSync(head);
  }

  return BundleWriteResult(
    alreadyPublished: alreadyPublished,
    filesWritten: written,
    headUpdated: headChanged,
  );
}