run method

@override Future<void> run()

Runs this command.

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

Implementation

@override
Future<void> run() async {
  print('Checking for latest engine release...\n');

  final platform = _platform();
  if (platform == null) {
    stderr.writeln('Unsupported platform: ${Platform.operatingSystem}');
    exit(1);
  }

  final downloadUrl =
      'https://github.com/$_repoOwner/$_repoName/releases/latest/download/flutter_blueprint_engine-$platform';

  final destDir = _installDir();
  await Directory(destDir).create(recursive: true);

  final binaryName = Platform.isWindows
      ? 'flutter_blueprint_engine.exe'
      : 'flutter_blueprint_engine';
  final destPath = p.join(destDir, binaryName);

  print('Downloading from:\n  $downloadUrl\n');

  final response = await http.get(Uri.parse(downloadUrl));
  if (response.statusCode != 200) {
    stderr.writeln(
        'Download failed (HTTP ${response.statusCode}).\n'
        'Build manually:\n  cd engine && go build -o flutter_blueprint_engine ./cmd/engine');
    exit(1);
  }

  final file = File(destPath);
  await file.writeAsBytes(response.bodyBytes);

  if (!Platform.isWindows) {
    await Process.run('chmod', ['+x', destPath]);
  }

  print('✓ Engine installed to: $destPath');
  print('');
  print('Add to your PATH:');
  print('  export PATH="\$PATH:$destDir"');
  print('');
  print('Or add to your shell profile (~/.zshrc, ~/.bashrc):');
  print('  echo \'export PATH="\$PATH:$destDir"\' >> ~/.zshrc');
}