state_notifier.dart

class PackageMetrics extends StateNotifier<AsyncValue<PackageMetricsScore>> {
  PackageMetrics(this._ref, {required this.packageName})
      : super(const AsyncLoading()) {
    _ref
        .watch(pubRepositoryProvider)
        .getPackageMetrics(packageName: packageName)
        .then((value) => state = AsyncData(value));
  }

  final AutoDisposeRef _ref;
  final String packageName;

  Future<void> like() async {
    await _ref.read(pubRepositoryProvider).like(packageName: packageName);
    _ref.invalidateSelf();
    _ref.invalidate(likedPackagesProvider);
  }
}