run method

@override Future<int> run()

Runs this command.

The return value is wrapped in a Future if necessary and returned by CommandRunner.runCommand.

Implementation

@override
Future<int> run() async {
  final ctx = await context;
  final assets = await _resolveAssets(ctx);
  final output = optional('output') ?? '.';

  // More than one artifact has no single filename to be written to, so the
  // output names a directory — created if it does not exist, because
  // `--platform all -o dist/` is the natural way to spell a release bundle.
  final intoDirectory = assets.length > 1 || await Directory(output).exists();
  if (assets.length > 1) await Directory(output).create(recursive: true);

  final manager = DownloadManager();
  try {
    for (final asset in assets) {
      final destination = intoDirectory ? p.join(output, asset.name) : output;
      final code = await _fetchOne(ctx, manager, asset, destination);
      // Stops at the first failure rather than continuing: a partial bundle
      // that reports success would be worse than an obvious stop.
      if (code != 0) return code;
    }
  } finally {
    manager.close();
  }
  return 0;
}