labels_to_version_parts.dart

import 'dart:io';

const List<String> options = ["major", "minor", "patch"];
Future<void> main(List<String> labels) async {
  List<String> versionParts = List.from(labels);
  versionParts.removeWhere((e) => !options.contains(e));
  String parts = "";
  if (versionParts.isNotEmpty) {
    parts = versionParts.join(",");
    parts = "parts=bump:$parts";
  }
  await setOutput(parts);
}

Future<void> setOutput(String item) async {
  Map<String, String> envVars = Platform.environment;
  String? envPath = envVars["GITHUB_OUTPUT"];
  File ghEnv = File(envPath!);
  String currentContent = await ghEnv.readAsString();
  if (currentContent.isNotEmpty) {
    currentContent += "\n" "$item";
  } else {
    currentContent = item;
  }
  ghEnv.writeAsString(currentContent);
}