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/core/api/api_client.dart';
import 'package:jiu_client/core/exceptions.dart';
import 'package:jiu_client/repositories/partner_repository.dart';

const _baseUrl = 'http://localhost:8080/api/v1';

class _TestApiClient extends ApiClient {
  final Dio _testDio;
  _TestApiClient(this._testDio) : super(token: 'test-token');

  @override
  Future<Response> get(String path, {Map<String, dynamic>? params}) =>
      _testDio.get(path, queryParameters: params);

  @override
  Future<Response> post(String path, {dynamic data}) =>
      _testDio.post(path, data: data);

  @override
  Future<Response> put(String path, {dynamic data}) =>
      _testDio.put(path, data: data);

  @override
  Future<Response> delete(String path) => _testDio.delete(path);
}

void main() {
  late Dio dio;
  late DioAdapter adapter;
  late PartnerRepository repo;

  setUp(() {
    dio = Dio(BaseOptions(baseUrl: _baseUrl));
    adapter = DioAdapter(dio: dio, matcher: const FullHttpRequestMatcher());
    repo = PartnerRepository(_TestApiClient(dio));
  });

  // ---------------------------------------------------------------------------
  // list()
  // ---------------------------------------------------------------------------
  group('PartnerRepository.list()', () {
    test('returns PageResult with partners on 200', () async {
      adapter.onGet(
        '/partners',
        (server) => server.reply(200, {
          'data': [
            {
              'id': 1,
              'code': 'S001',
              'name': '张家酒水供应商',
              'type': 'supplier',
              'contact': '张三',
              'phone': '13800138000',
              'address': '北京市朝阳区',
              'bank_account': null,
              'remark': null,
            }
          ],
          'total': 1,
          'page': 1,
          'page_size': 20,
        }),
        queryParameters: {'page': 1, 'page_size': 20, 'type': 'supplier'},
      );

      final result = await repo.list(type: 'supplier');

      expect(result.total, 1);
      expect(result.data.length, 1);
      expect(result.data.first.name, '张家酒水供应商');
      expect(result.data.first.type, 'supplier');
    });

    test('returns empty list without error', () async {
      adapter.onGet(
        '/partners',
        (server) => server.reply(200, {
          'data': [],
          'total': 0,
          'page': 1,
          'page_size': 20,
        }),
        queryParameters: {'page': 1, 'page_size': 20},
      );

      final result = await repo.list();
      expect(result.data, isEmpty);
      expect(result.total, 0);
    });

    test('passes keyword query param', () async {
      adapter.onGet(
        '/partners',
        (server) => server.reply(200, {
          'data': [],
          'total': 0,
          'page': 1,
          'page_size': 20,
        }),
        queryParameters: {
          'page': 1,
          'page_size': 20,
          'keyword': '茅台',
        },
      );

      final result = await repo.list(keyword: '茅台');
      expect(result.data, isEmpty);
    });

    test('400 response throws AppException with server error message',
        () async {
      adapter.onGet(
        '/partners',
        (server) => server.reply(400, {'error': 'invalid type'}),
        queryParameters: {'page': 1, 'page_size': 20},
      );

      expect(
        () => repo.list(),
        throwsA(
          predicate<AppException>(
            (e) => e.message == 'invalid type' && e.statusCode == 400,
          ),
        ),
      );
    });

    test('401 response throws AppException with status 401', () async {
      adapter.onGet(
        '/partners',
        (server) => server.reply(401, {'error': 'unauthorized'}),
        queryParameters: {'page': 1, 'page_size': 20},
      );

      expect(
        () => repo.list(),
        throwsA(
          predicate<AppException>((e) => e.statusCode == 401),
        ),
      );
    });

    test('network timeout throws AppException with fallback message', () async {
      final badDio = Dio(BaseOptions(
        baseUrl: 'http://localhost:19999',
        connectTimeout: const Duration(milliseconds: 100),
      ));
      final badRepo = PartnerRepository(_TestApiClient(badDio));

      try {
        await badRepo.list();
        fail('Expected AppException');
      } on AppException catch (e) {
        expect(e.message, isNotEmpty);
      }
    });
  });

  // ---------------------------------------------------------------------------
  // create()
  // ---------------------------------------------------------------------------
  group('PartnerRepository.create()', () {
    test('returns created Partner on 201', () async {
      final payload = {'name': '李记酒行', 'type': 'supplier'};
      adapter.onPost(
        '/partners',
        (server) => server.reply(201, {
          'data': {
            'id': 2,
            'code': null,
            'name': '李记酒行',
            'type': 'supplier',
            'contact': null,
            'phone': null,
            'address': null,
            'bank_account': null,
            'remark': null,
          }
        }),
        data: payload,
      );

      final partner = await repo.create(payload);

      expect(partner.id, 2);
      expect(partner.name, '李记酒行');
      expect(partner.type, 'supplier');
    });

    test('400 response throws AppException', () async {
      adapter.onPost(
        '/partners',
        (server) => server.reply(400, {'error': 'name is required'}),
        data: {'name': '', 'type': 'supplier'},
      );

      expect(
        () => repo.create({'name': '', 'type': 'supplier'}),
        throwsA(isA<AppException>()),
      );
    });
  });

  // ---------------------------------------------------------------------------
  // update()
  // ---------------------------------------------------------------------------
  group('PartnerRepository.update()', () {
    test('returns updated Partner on 200', () async {
      final payload = {'name': '张家酒水(新)', 'type': 'supplier'};
      adapter.onPut(
        '/partners/1',
        (server) => server.reply(200, {
          'data': {
            'id': 1,
            'code': 'S001',
            'name': '张家酒水(新)',
            'type': 'supplier',
            'contact': null,
            'phone': null,
            'address': null,
            'bank_account': null,
            'remark': null,
          }
        }),
        data: payload,
      );

      final partner = await repo.update(1, payload);

      expect(partner.id, 1);
      expect(partner.name, '张家酒水(新)');
    });

    test('404 throws AppException', () async {
      adapter.onPut(
        '/partners/999',
        (server) => server.reply(404, {'error': 'partner not found'}),
        data: {'name': 'X', 'type': 'supplier'},
      );

      expect(
        () => repo.update(999, {'name': 'X', 'type': 'supplier'}),
        throwsA(
          predicate<AppException>((e) => e.statusCode == 404),
        ),
      );
    });
  });

  // ---------------------------------------------------------------------------
  // delete()
  // ---------------------------------------------------------------------------
  group('PartnerRepository.delete()', () {
    test('completes without error on 200', () async {
      adapter.onDelete(
        '/partners/1',
        (server) => server.reply(200, {'message': 'deleted'}),
      );

      await expectLater(repo.delete(1), completes);
    });

    test('404 response throws AppException', () async {
      adapter.onDelete(
        '/partners/999',
        (server) => server.reply(404, {'error': 'not found'}),
      );

      expect(
        () => repo.delete(999),
        throwsA(isA<AppException>()),
      );
    });
  });
}