import 'dart:async';

import 'package:dio/dio.dart';
import 'package:dio_smart_retry/dio_smart_retry.dart';
import 'package:ferry/ferry.dart';
import 'package:gql_dio_link/gql_dio_link.dart';

class DioClientManager {
  late final Dio _dio;
  late final Link _dioLink;

  DioClientManager() {
    const baseUrl = 'https://randomuser.me/api/?results=20&gender=female,male';

    final options = BaseOptions(
      baseUrl: baseUrl,
      connectTimeout: const Duration(seconds: 10),
      receiveTimeout: const Duration(seconds: 10),
    );

    _dio = Dio(options);

    _dio.interceptors.add(
      RetryInterceptor(
        dio: _dio,
        logPrint: print,
        retryEvaluator: (error, attempt) {
          /// Error/exception not being triggered ???
          /// Need help !!!

          print('$error');
          print('${error.message}');

          return true;
        },
      ),
    );

    _dioLink = Link.from([
      DioLink(baseUrl, client: _dio),
    ]);
  }

  Dio get client => _dio;

  Link get link => _dioLink;
}

class FerryClient extends Client {
  FerryClient({
    required Link link,
    required Cache cache,
  }) : super(link: link, cache: cache);

  @override
  Stream<OperationResponse<TData, TVars>> request<TData, TVars>(
    OperationRequest<TData, TVars> request, [
    NextTypedLink<TData, TVars>? forward,
  ]) async* {
    /// Set a faster duration, must handled on Retry Interceptor ???
    /// Need help !!!
    
    const duration = Duration(milliseconds: 100);

    final stream = super.request(request, forward).timeout(
      duration,
      onTimeout: (EventSink<OperationResponse<TData, TVars>> sink) {
        // Return error on timeout
        final error = DioException(
          requestOptions: RequestOptions(),
          message: 'My beautiful error message',
        );

        sink.addError(error);
        sink.close();
      },
    );

    yield* stream;
  }
}

void main() {
  final dioClientMgr = DioClientManager();
  final ferryClient = FerryClient(
    link: dioClientMgr.link,
    cache: Cache(),
  );
  
  /// Set some random request object
  final req = OperationRequest(...);
  ferryClient.request(req);
}