import 'dart:async';

import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:go_router/go_router.dart';
import 'package:jiu_client/core/models/page_result.dart';
import 'package:jiu_client/core/theme/themes.dart';
import 'package:jiu_client/models/stock_in.dart';
import 'package:jiu_client/providers/license_provider.dart';
import 'package:jiu_client/providers/stock_in_provider.dart';
import 'package:jiu_client/screens/stock_in/stock_in_list_screen.dart';

/// 入库列表屏（照原型重建：单视图无 tab）的行为测试。
/// WriteGuard 内层 watch licenseProvider；覆写成同步 normal 授权，避免真实网络请求。
class _FakeLicenseNotifier extends LicenseNotifier {
  @override
  Future<LicenseInfo?> build() async => const LicenseInfo(
        id: 1,
        type: 'annual',
        isActive: true,
        maxDevices: 3,
        phase: 'normal',
      );
}

class _FakeStockInNotifier extends StockInListNotifier {
  final AsyncValue<PageResult<StockInOrder>> _fixed;
  _FakeStockInNotifier(this._fixed);

  @override
  Future<PageResult<StockInOrder>> build() async {
    state = _fixed;
    return state.value ??
        const PageResult(data: [], total: 0, page: 1, pageSize: 20);
  }

  // 交互 setter 全部 no-op，避免命中真实 repo。
  @override
  void reload() {}
  @override
  void setPage(int page) {}
  @override
  void setPageSize(int pageSize) {}
  @override
  void setStatus(String status) {}
  @override
  void setKeyword(String keyword) {}
  @override
  void setDateRange(String? startDate, String? endDate) {}
  @override
  void setDetail(Map<String, String> detail) {}
  @override
  Future<void> createOrder(Map<String, dynamic> data) async {}
  @override
  Future<void> submitOrder(int id) async {}
  @override
  Future<void> approveOrder(int id) async {}
  @override
  Future<void> rejectOrder(int id) async {}
}

/// 永远停在 loading（build 不完成）。
class _FakeLoadingStockInNotifier extends StockInListNotifier {
  @override
  Future<PageResult<StockInOrder>> build() =>
      Completer<PageResult<StockInOrder>>().future;
  @override
  void reload() {}
}

/// 持久化 provider 里已有残留关键词 'sfs'（模拟用户上次搜索后未清）。
/// build 仍返回数据——用来验证「进页面把残留筛选回填到 UI」而非隐形丢数据。
class _StaleKeywordStockInNotifier extends StockInListNotifier {
  @override
  Future<PageResult<StockInOrder>> build() async {
    state = AsyncValue.data(
        PageResult(data: [_makeOrder()], total: 1, page: 1, pageSize: 20));
    return state.value!;
  }

  @override
  String get currentKeyword => 'sfs';
  @override
  void reload() {}
  @override
  void setStatus(String status) {}
  @override
  void setKeyword(String keyword) {}
  @override
  void setDateRange(String? startDate, String? endDate) {}
  @override
  void setDetail(Map<String, String> detail) {}
}

Widget _appWith(Override overrideNotifier) {
  final router = GoRouter(
    initialLocation: '/stock-in',
    routes: [
      GoRoute(
        path: '/stock-in',
        builder: (_, __) => const Scaffold(body: StockInListScreen()),
      ),
      GoRoute(
        path: '/stock-in/new',
        builder: (_, __) => const Scaffold(body: Text('new order form')),
      ),
    ],
  );
  return ProviderScope(
    overrides: [
      licenseProvider.overrideWith(() => _FakeLicenseNotifier()),
      overrideNotifier,
    ],
    child: MaterialApp.router(theme: buildTheme('a'), routerConfig: router),
  );
}

Widget _buildApp(AsyncValue<PageResult<StockInOrder>> state) => _appWith(
    stockInListProvider.overrideWith(() => _FakeStockInNotifier(state)));

Widget _buildLoadingApp() => _appWith(
    stockInListProvider.overrideWith(() => _FakeLoadingStockInNotifier()));

StockInOrder _makeOrder({
  int id = 1,
  String orderNo = 'SI2024010001',
  String status = 'draft',
  String? partnerName = '张家酒水',
  String? warehouseName = '主仓库',
}) =>
    StockInOrder(
      id: id,
      orderNo: orderNo,
      warehouseId: 1,
      warehouseName: warehouseName,
      partnerName: partnerName,
      status: status,
      costTotal: 1000.0,
      orderDate: '2024-01-10',
    );

void _bigView(WidgetTester tester) {
  tester.view.physicalSize = const Size(1400, 1000);
  tester.view.devicePixelRatio = 1.0;
  addTearDown(tester.view.resetPhysicalSize);
}

void main() {
  group('StockInListScreen（单视图重建版）', () {
    testWidgets('loading 显示进度圈', (tester) async {
      _bigView(tester);
      await tester.pumpWidget(_buildLoadingApp());
      await tester.pump();
      expect(find.byType(CircularProgressIndicator), findsOneWidget);
    });

    testWidgets('error 显示「加载失败」+ 重试', (tester) async {
      _bigView(tester);
      await tester
          .pumpWidget(_buildApp(AsyncValue.error('连接超时', StackTrace.empty)));
      await tester.pumpAndSettle();
      expect(find.textContaining('加载失败'), findsOneWidget);
      expect(find.text('重试'), findsOneWidget);
    });

    testWidgets('空列表显示空态提示', (tester) async {
      _bigView(tester);
      const empty =
          PageResult<StockInOrder>(data: [], total: 0, page: 1, pageSize: 20);
      await tester.pumpWidget(_buildApp(const AsyncValue.data(empty)));
      await tester.pumpAndSettle();
      expect(find.textContaining('没有匹配的入库单'), findsOneWidget);
    });

    testWidgets('列表直接展示单号与供应商（无 tab）', (tester) async {
      _bigView(tester);
      final orders = [
        _makeOrder(id: 1, orderNo: 'SI2024010001', partnerName: '张家酒水'),
        _makeOrder(id: 2, orderNo: 'SI2024010002', partnerName: '李记酒行'),
      ];
      await tester.pumpWidget(_buildApp(AsyncValue.data(
          PageResult(data: orders, total: 2, page: 1, pageSize: 20))));
      await tester.pumpAndSettle();
      expect(find.text('SI2024010001'), findsOneWidget);
      expect(find.text('李记酒行'), findsOneWidget);
    });

    testWidgets('工具栏有「新增入库」并可导航', (tester) async {
      _bigView(tester);
      const empty =
          PageResult<StockInOrder>(data: [], total: 0, page: 1, pageSize: 20);
      await tester.pumpWidget(_buildApp(const AsyncValue.data(empty)));
      await tester.pumpAndSettle();
      final newBtn = find.text('新增入库');
      expect(newBtn, findsOneWidget);
      await tester.tap(newBtn);
      await tester.pumpAndSettle();
      expect(find.text('new order form'), findsOneWidget);
    });

    // 操作已改为「行内只放眼睛，审核/退单/打印移入右侧详情抽屉」。
    // 抽屉内容与动作布局由 order_detail_drawer 组件保真验证，这里只验行内行为。
    testWidgets('各状态行内只显示眼睛（详情入口），无内联审核按钮', (tester) async {
      _bigView(tester);
      for (final status in ['draft', 'pending', 'approved']) {
        final orders = [_makeOrder(id: 1, status: status)];
        await tester.pumpWidget(_buildApp(AsyncValue.data(
            PageResult(data: orders, total: 1, page: 1, pageSize: 20))));
        await tester.pumpAndSettle();
        expect(find.byTooltip('详情'), findsOneWidget); // 眼睛图标
        expect(find.byKey(const Key('btn_approve_1')), findsNothing);
        expect(find.byKey(const Key('btn_reject_1')), findsNothing);
        expect(find.text('提交'), findsNothing);
      }
    });

    testWidgets('进页面把 provider 残留关键词回填到搜索框（不隐形过滤）', (tester) async {
      _bigView(tester);
      await tester.pumpWidget(_appWith(stockInListProvider
          .overrideWith(() => _StaleKeywordStockInNotifier())));
      await tester.pumpAndSettle();
      // 残留 'sfs' 必须显示在搜索框里，用户看得见可清除；
      // 修复前入库屏无 initState 回填 → 框空但仍按 'sfs' 过滤 → 列表恒空。
      expect(find.text('sfs'), findsOneWidget);
    });

    testWidgets('分页栏显示总数', (tester) async {
      _bigView(tester);
      final orders = [_makeOrder(id: 1)];
      await tester.pumpWidget(_buildApp(AsyncValue.data(
          PageResult(data: orders, total: 35, page: 1, pageSize: 20))));
      await tester.pumpAndSettle();
      expect(find.textContaining('共 35'), findsOneWidget);
    });
  });
}