apply static method

void apply(ProjectConfig config)

Edits android/app/build.gradle{.kts} in config's project to add the product flavors. No-op (with a warning) when there are no flavors, no gradle file (e.g. flutter create was skipped), or the block already exists. Throws StateError if the file exists but has no android { } block to edit.

Implementation

static void apply(ProjectConfig config) {
  if (!config.hasFlavors) return;

  final appDir = p.join(config.projectPath, 'android', 'app');
  final kts = File(p.join(appDir, 'build.gradle.kts'));
  final groovy = File(p.join(appDir, 'build.gradle'));

  final File target;
  final bool isKts;
  if (kts.existsSync()) {
    target = kts;
    isKts = true;
  } else if (groovy.existsSync()) {
    target = groovy;
    isKts = false;
  } else {
    Logger.warn(
      'No android/app/build.gradle{.kts} found — skipping Android flavor '
      'setup. Run `flutter create .` then re-run, or add flavors manually.',
    );
    return;
  }

  final original = target.readAsStringSync();
  if (original.contains('productFlavors')) {
    Logger.warn(
      'android/app/${p.basename(target.path)} already defines '
      'productFlavors — leaving it untouched.',
    );
    return;
  }

  final title = StringUtils.toTitleCase(config.projectName);
  final flavors =
      config.flavors.map((f) => FlavorGradle.from(f, title)).toList();

  final updated = injectProductFlavors(
    original,
    isKts: isKts,
    flavors: flavors,
  );
  target.writeAsStringSync(updated);
  Logger.info('Added Android product flavors to ${p.basename(target.path)}');
}