import 'dart:convert';

import 'package:dio/dio.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:frosty/apis/base_api_client.dart';
import 'package:frosty/apis/twitch_gql_api.dart';
import 'package:http_mock_adapter/http_mock_adapter.dart';

void main() {
  late Dio dio;
  late DioAdapter dioAdapter;
  late TwitchGqlApi api;

  setUp(() {
    dio = Dio(BaseOptions());
    dioAdapter = DioAdapter(dio: dio);
    api = TwitchGqlApi(dio);
  });

  group('followUser', () {
    test('posts FollowButton_FollowUser persisted mutation', () async {
      dioAdapter.onPost(
        'https://gql.twitch.tv/gql',
        (server) => server.reply(200, {
          'data': {
            'followUser': {
              'follow': {
                'user': {'id': '999', 'displayName': 'Streamer'},
              },
            },
          },
        }),
        data: Matchers.any,
      );

      await api.followUser(targetId: '999', authToken: 'web-token');
    });

    test('throws IntegrityCheckException on integrity errors', () async {
      dioAdapter.onPost(
        'https://gql.twitch.tv/gql',
        (server) => server.reply(200, {
          'errors': [
            {'message': 'failed integrity check'},
          ],
        }),
        data: Matchers.any,
      );

      await expectLater(
        api.followUser(targetId: '999', authToken: 'web-token'),
        throwsA(isA<IntegrityCheckException>()),
      );
    });
  });

  group('unfollowUser', () {
    test('posts FollowButton_UnfollowUser persisted mutation', () async {
      dioAdapter.onPost(
        'https://gql.twitch.tv/gql',
        (server) => server.reply(200, {
          'data': {
            'unfollowUser': {
              'follow': null,
            },
          },
        }),
        data: Matchers.any,
      );

      await api.unfollowUser(targetId: '999', authToken: 'web-token');
    });
  });

  group('fetchIntegrityToken', () {
    test('rejects bad_bot tokens', () async {
      final payload = base64Url.encode(
        utf8.encode(
          jsonEncode({
            'is_bad_bot': 'true',
            'device_id': 'dev',
            'client_id': 'kimne78kx3ncx6brgo4mv6wki5h1ko',
          }),
        ),
      );

      dioAdapter.onPost(
        'https://gql.twitch.tv/integrity',
        (server) => server.reply(200, {
          'token': 'v4.public.$payload.sig',
          'expiration': DateTime.now().millisecondsSinceEpoch + 600000,
        }),
        data: Matchers.any,
      );

      await expectLater(
        api.fetchIntegrityToken(authToken: 'web', deviceId: 'dev'),
        throwsA(isA<IntegrityCheckException>()),
      );
    });
  });
}