import 'package:dio/dio.dart';
import 'package:flutter/material.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:social_app/core/api/i_api_client.dart';
import 'package:social_app/core/di/injection.dart';
import 'package:social_app/features/friends/data/friends_api.dart';
import 'package:social_app/features/settings/data/services/settings_user_cache.dart';
import 'package:social_app/features/settings/ui/screens/settings_screen.dart';
import 'package:social_app/features/users/data/models/user_response.dart';
import 'package:social_app/features/users/data/users_api.dart';

class _TestApiClient implements IApiClient {
  @override
  Future<Response<T>> delete<T>(String path, {data, Options? options}) async {
    return Response<T>(requestOptions: RequestOptions(path: path));
  }

  @override
  Future<Response<T>> get<T>(String path, {Options? options}) async {
    return Response<T>(requestOptions: RequestOptions(path: path));
  }

  @override
  Future<Stream<String>> getSseLines(
    String path, {
    Map<String, String>? headers,
  }) async {
    return const Stream<String>.empty();
  }

  @override
  Future<Response<T>> patch<T>(String path, {data, Options? options}) async {
    return Response<T>(requestOptions: RequestOptions(path: path));
  }

  @override
  Future<Response<T>> post<T>(String path, {data, Options? options}) async {
    return Response<T>(requestOptions: RequestOptions(path: path));
  }
}

class _FakeUsersApi extends UsersApi {
  _FakeUsersApi(super.client);

  int getMeCalls = 0;

  @override
  Future<UserResponse> getMe() async {
    getMeCalls += 1;
    return const UserResponse(
      id: 'u1',
      username: 'Linksy',
      phone: '13800000000',
    );
  }
}

class _FakeFriendsApi extends FriendsApi {
  _FakeFriendsApi(super.client);

  @override
  Future<List<FriendResponse>> getFriends() async {
    return const [];
  }
}

void main() {
  late _FakeUsersApi usersApi;

  setUp(() {
    final apiClient = _TestApiClient();
    if (sl.isRegistered<UsersApi>()) {
      sl.unregister<UsersApi>();
    }
    if (sl.isRegistered<FriendsApi>()) {
      sl.unregister<FriendsApi>();
    }
    if (sl.isRegistered<SettingsUserCache>()) {
      sl.unregister<SettingsUserCache>();
    }
    usersApi = _FakeUsersApi(apiClient);
    sl.registerSingleton<UsersApi>(usersApi);
    sl.registerSingleton<FriendsApi>(_FakeFriendsApi(apiClient));
    sl.registerSingleton<SettingsUserCache>(SettingsUserCache());
  });

  tearDown(() async {
    if (sl.isRegistered<UsersApi>()) {
      await sl.unregister<UsersApi>();
    }
    if (sl.isRegistered<FriendsApi>()) {
      await sl.unregister<FriendsApi>();
    }
    if (sl.isRegistered<SettingsUserCache>()) {
      await sl.unregister<SettingsUserCache>();
    }
  });

  testWidgets('settings screen removes account row and shows logout button', (
    tester,
  ) async {
    await tester.pumpWidget(const MaterialApp(home: SettingsScreen()));
    await tester.pump();

    expect(find.text('我的账户'), findsNothing);
    expect(find.text('退出登录'), findsOneWidget);
  });

  testWidgets('settings profile hero shows edit icon entry', (tester) async {
    await tester.pumpWidget(const MaterialApp(home: SettingsScreen()));
    await tester.pump();

    expect(find.byKey(settingsProfileEditButtonKey), findsOneWidget);
  });

  testWidgets('settings screen re-entry uses cached user', (tester) async {
    await tester.pumpWidget(const MaterialApp(home: SettingsScreen()));
    await tester.pump();
    await tester.pump();

    await tester.pumpWidget(const SizedBox.shrink());
    await tester.pump();

    await tester.pumpWidget(const MaterialApp(home: SettingsScreen()));
    await tester.pump();
    await tester.pump();

    expect(usersApi.getMeCalls, 1);
  });
}