// 功能描述：收藏版本契约、跨入口同步及账号切换迟到响应保护；版本：1.0.0。
import 'dart:async';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:http/http.dart' as http;
import 'package:http/testing.dart';
import 'package:user_app/data/repositories/client_repository.dart';
import 'package:user_app/data/services/api_client.dart';
import 'package:user_app/domain/models/product_favorite.dart';
import 'package:user_app/ui/features/shop/favorite_button.dart';

http.Response _response(Object details) => http.Response(
  jsonEncode({'code': 0, 'details': details}),
  200,
  headers: {'content-type': 'application/json; charset=utf-8'},
);

void main() {
  testWidgets('两个入口同步服务端收藏状态，失败读取后不反转图标', (tester) async {
    var active = false, version = 0, fail = false;
    final repo = ClientRepository(
      ApiClient(
        () => 'test',
        client: MockClient((request) async {
          if (request.method == 'PUT') {
            final body = jsonDecode(request.body) as Map;
            expect(body['revision'], version == 0 ? '' : 'f:$version');
            if (fail) return http.Response('{"code":500}', 200);
            active = body['favorite'] as bool;
            version++;
          }
          return _response({
            'product_identity': 'p1',
            'favorite': active,
            'revision': version == 0 ? '' : 'f:$version',
          });
        }),
      ),
    );
    await tester.pumpWidget(
      MaterialApp(
        home: Scaffold(
          body: Row(
            children: [
              for (var i = 0; i < 2; i++)
                FavoriteButton(repository: repo, identity: 'p1', redirect: '/shop', name: '商品'),
            ],
          ),
        ),
      ),
    );
    await tester.pumpAndSettle();
    expect(find.byTooltip('收藏 商品'), findsNWidgets(2));
    await tester.tap(find.byTooltip('收藏 商品').first);
    await tester.pumpAndSettle();
    expect(find.byTooltip('取消收藏 商品'), findsNWidgets(2));
    fail = true;
    await tester.tap(find.byTooltip('取消收藏 商品').first);
    await tester.pumpAndSettle();
    expect(find.byTooltip('取消收藏 商品'), findsNWidgets(2));
  });
  test('账号切换后不广播前一账号收藏结果', () async {
    var token = 'account-a';
    final pending = Completer<http.Response>();
    final events = <ProductFavoriteState>[];
    final repo = ClientRepository(
      ApiClient(() => token, client: MockClient((_) => pending.future)),
    );
    final subscription = repo.favoriteChanges.listen(events.add);
    addTearDown(subscription.cancel);
    final result = repo.setFavorite(
      const ProductFavoriteState(productIdentity: 'p1', active: false, revision: ''),
      true,
    );
    final assertion = expectLater(result, throwsA(isA<SessionExpiredException>()));
    token = 'account-b';
    pending.complete(_response({'product_identity': 'p1', 'favorite': true, 'revision': 'f:1'}));
    await assertion;
    expect(events, isEmpty);
  });
  test('收藏分页、图片URL及金额数据校验', () async {
    var reads = 0;
    final repo = ClientRepository(
      ApiClient(
        () => 'test',
        client: MockClient((request) async {
          reads++;
          final page = int.parse(request.url.queryParameters['page']!);
          return _response({
            'items': [
              {
                'product_identity': 'p$page',
                'favorite': true,
                'revision': 'r$page',
                'name': '商品$page',
                'price_amount': 16900,
                'stock_quantity': 0,
                'available': false,
                'category_name': '配件',
                'image_url': 'javascript:bad',
                'specifications': ['家用'],
              },
            ],
            'has_more': page == 1,
            'page': page,
            'page_size': 30,
          });
        }),
      ),
    );
    final items = await repo.favorites();
    expect(reads, 2);
    expect(items.length, 2);
    expect(items.first.product.imageUrl, '');
    expect(items.first.available, isFalse);
    expect(
      () => ProductFavoriteState.fromJson({
        'product_identity': 'p1',
        'favorite': 'true',
        'revision': '',
      }),
      throwsFormatException,
    );
  });
}