import 'package:graphql_flutter/graphql_flutter.dart';
import 'package:shared_preferences/shared_preferences.dart';

/// Configure and provide the GraphQL client.
/// Set [kGraphQLEndpoint] to your Magento GraphQL endpoint.
const String kGraphQLEndpoint = String.fromEnvironment(
  'GRAPHQL_ENDPOINT',
  defaultValue: 'https://your-magento-store.com/graphql',
);

Future<GraphQLClient> buildGraphQLClient() async {
  await initHiveForFlutter();

  final prefs = await SharedPreferences.getInstance();
  final token = prefs.getString('auth_token') ?? '';

  final authLink = AuthLink(getToken: () async => token.isNotEmpty ? 'Bearer $token' : '');

  final httpLink = HttpLink(kGraphQLEndpoint);

  final link = authLink.concat(httpLink);

  return GraphQLClient(
    link: link,
    cache: GraphQLCache(store: HiveStore()),
  );
}

ValueNotifier<GraphQLClient> buildGraphQLClientNotifier(GraphQLClient client) {
  return ValueNotifier(client);
}