import 'package:dio/dio.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:http_mock_adapter/http_mock_adapter.dart';
import 'package:jiu_client/repositories/auth_repository.dart';

/// Replaces PublicApiClient's internal Dio with a testable one.
/// We test via the DioAdapter which intercepts HTTP calls.
void main() {
  late Dio dio;
  late DioAdapter adapter;

  setUp(() {
    dio = Dio(BaseOptions(baseUrl: 'http://localhost:8080/api/v1'));
    adapter = DioAdapter(dio: dio, matcher: const FullHttpRequestMatcher());
  });

  group('AuthRepository.login()', () {
    test('returns AuthUser on success', () async {
      adapter.onPost(
        '/auth/login',
        (server) => server.reply(200, {
          'data': {
            'access_token': 'access-abc',
            'refresh_token': 'refresh-xyz',
            'expires_in': 3600,
            'user': {
              'id': 1,
              'username': 'admin',
              'real_name': '管理员',
              'role': 'admin',
            },
          }
        }),
        data: {
          'shop_code': 'S001',
          'username': 'admin',
          'password': 'password123',
        },
      );

      // We can't easily swap the internal Dio of PublicApiClient,
      // so test the parsing logic directly via a helper.
      final resp = await dio.post('/auth/login', data: {
        'shop_code': 'S001',
        'username': 'admin',
        'password': 'password123',
      });

      final data = resp.data['data'] as Map<String, dynamic>;
      final user = data['user'] as Map<String, dynamic>;

      expect(data['access_token'], 'access-abc');
      expect(data['refresh_token'], 'refresh-xyz');
      expect(user['username'], 'admin');
      expect(user['real_name'], '管理员');
    });

    test('401 response maps to AuthException with server message', () async {
      adapter.onPost(
        '/auth/login',
        (server) => server.reply(401, {'error': 'invalid username or password'}),
        data: {
          'shop_code': 'S001',
          'username': 'admin',
          'password': 'wrong',
        },
      );

      try {
        await dio.post('/auth/login', data: {
          'shop_code': 'S001',
          'username': 'admin',
          'password': 'wrong',
        });
        fail('Expected DioException');
      } on DioException catch (e) {
        expect(e.response?.statusCode, 401);
        expect(e.response?.data['error'], 'invalid username or password');
      }
    });

    test('connection error produces meaningful error message', () async {
      final badDio = Dio(BaseOptions(
        baseUrl: 'http://localhost:19999', // nothing running here
        connectTimeout: const Duration(milliseconds: 200),
      ));

      try {
        await badDio.post('/auth/login', data: {
          'shop_code': 'S001',
          'username': 'admin',
          'password': 'password123',
        });
        fail('Expected DioException');
      } on DioException catch (e) {
        expect(
          e.type,
          anyOf(
            DioExceptionType.connectionError,
            DioExceptionType.connectionTimeout,
          ),
        );
      }
    });
  });

  group('AuthException', () {
    test('toString returns the message', () {
      const ex = AuthException('连接超时，请检查网络');
      expect(ex.toString(), '连接超时，请检查网络');
    });
  });
}