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/inventory_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 InventoryRepository repo;

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

  // ---------------------------------------------------------------------------
  // listInventory()
  // ---------------------------------------------------------------------------
  group('InventoryRepository.listInventory()', () {
    test('returns PageResult with inventory items on 200', () async {
      adapter.onGet(
        '/inventory',
        (server) => server.reply(200, {
          'data': [
            {
              'id': 1,
              'warehouse_id': 1,
              'warehouse_name': '主仓库',
              'product_id': 1,
              'product_name': '五粮液',
              'product_code': 'P001',
              'spec': '500ml',
              'unit': '瓶',
              'brand': '五粮液集团',
              'min_stock': 10,
              'quantity': 50.0,
            }
          ],
          'total': 1,
          'page': 1,
          'page_size': 50,
        }),
        queryParameters: {'page': 1, 'page_size': 50},
      );

      final result = await repo.listInventory();

      expect(result.total, 1);
      expect(result.data.length, 1);
      expect(result.data.first.productName, '五粮液');
      expect(result.data.first.quantity, 50.0);
      expect(result.data.first.warehouseId, 1);
    });

    test('returns empty list without error', () async {
      adapter.onGet(
        '/inventory',
        (server) => server.reply(200, {
          'data': [],
          'total': 0,
          'page': 1,
          'page_size': 50,
        }),
        queryParameters: {'page': 1, 'page_size': 50},
      );

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

    test('passes warehouseId and keyword params', () async {
      adapter.onGet(
        '/inventory',
        (server) => server.reply(200, {
          'data': [],
          'total': 0,
          'page': 1,
          'page_size': 50,
        }),
        queryParameters: {
          'page': 1,
          'page_size': 50,
          'warehouse_id': 1,
          'keyword': '五粮液',
        },
      );

      final result = await repo.listInventory(warehouseId: 1, keyword: '五粮液');
      expect(result.data, isEmpty);
    });

    test('401 throws AppException', () async {
      adapter.onGet(
        '/inventory',
        (server) => server.reply(401, {'error': 'unauthorized'}),
        queryParameters: {'page': 1, 'page_size': 50},
      );

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

    test('400 throws AppException with server error message', () async {
      adapter.onGet(
        '/inventory',
        (server) => server.reply(400, {'error': 'invalid warehouse_id'}),
        queryParameters: {'page': 1, 'page_size': 50},
      );

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

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

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

  // ---------------------------------------------------------------------------
  // listLogs()
  // ---------------------------------------------------------------------------
  group('InventoryRepository.listLogs()', () {
    test('returns PageResult with inventory logs on 200', () async {
      adapter.onGet(
        '/inventory/logs',
        (server) => server.reply(200, {
          'data': [
            {
              'warehouse_id': 1,
              'product_id': 1,
              'warehouse': {'name': '主仓库'},
              'product': {'name': '五粮液'},
              'direction': 'in',
              'quantity': 20.0,
              'qty_before': 30.0,
              'qty_after': 50.0,
              'ref_type': 'stock_in',
              'ref_id': 5,
              'created_at': '2024-01-10T10:00:00Z',
            }
          ],
          'total': 1,
          'page': 1,
          'page_size': 50,
        }),
        queryParameters: {'page': 1, 'page_size': 50},
      );

      final result = await repo.listLogs();

      expect(result.total, 1);
      expect(result.data.length, 1);
      expect(result.data.first.direction, 'in');
      expect(result.data.first.quantity, 20.0);
      expect(result.data.first.qtyBefore, 30.0);
      expect(result.data.first.qtyAfter, 50.0);
    });

    test('returns empty list without error', () async {
      adapter.onGet(
        '/inventory/logs',
        (server) => server.reply(200, {
          'data': [],
          'total': 0,
          'page': 1,
          'page_size': 50,
        }),
        queryParameters: {'page': 1, 'page_size': 50},
      );

      final result = await repo.listLogs();
      expect(result.data, isEmpty);
    });

    test('passes warehouseId and productId params', () async {
      adapter.onGet(
        '/inventory/logs',
        (server) => server.reply(200, {
          'data': [],
          'total': 0,
          'page': 1,
          'page_size': 50,
        }),
        queryParameters: {
          'page': 1,
          'page_size': 50,
          'warehouse_id': 1,
          'product_id': 1,
        },
      );

      final result = await repo.listLogs(warehouseId: 1, productId: 1);
      expect(result.data, isEmpty);
    });

    test('401 throws AppException', () async {
      adapter.onGet(
        '/inventory/logs',
        (server) => server.reply(401, {'error': 'unauthorized'}),
        queryParameters: {'page': 1, 'page_size': 50},
      );

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

    test('400 throws AppException with server error message', () async {
      adapter.onGet(
        '/inventory/logs',
        (server) => server.reply(400, {'error': 'invalid product_id'}),
        queryParameters: {'page': 1, 'page_size': 50},
      );

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