part of 'command_executor.dart';

extension _CommandExecutorComposite on CommandExecutor {
  Future<_CommandResult> _sequence(
    RuntimeCommand command,
    _CommandContext context,
    RuntimeCommandHandle? handle,
  ) async {
    final commands = _commandsFromPayload(command);
    final childContext = _childContextFor(command, context);
    for (final child in commands) {
      if (_disposed ||
          (handle?.isCancelled ?? false) ||
          !_scopeIsAlive(childContext.scope)) {
        return _CommandResult.cancelled;
      }
      final result = await _execute(child, childContext);
      if (result == _CommandResult.cancelled) {
        return _CommandResult.cancelled;
      }
    }

    if (_disposed ||
        (handle?.isCancelled ?? false) ||
        !_scopeIsAlive(childContext.scope)) {
      return _CommandResult.cancelled;
    }
    _emitCommandCompletion(command, childContext);
    return _CommandResult.completed;
  }

  Future<_CommandResult> _parallel(
    RuntimeCommand command,
    _CommandContext context,
    RuntimeCommandHandle? handle,
  ) async {
    final commands = _commandsFromPayload(command);
    final childContext = _childContextFor(command, context);
    final results = await Future.wait(
      commands.map((child) => _execute(child, childContext)),
    );
    if (_disposed ||
        (handle?.isCancelled ?? false) ||
        !_scopeIsAlive(childContext.scope) ||
        results.contains(_CommandResult.cancelled)) {
      return _CommandResult.cancelled;
    }

    _emitCommandCompletion(command, childContext);
    return _CommandResult.completed;
  }
}