import 'package:eatvio_app/core/enums/base_state.dart';
import 'package:eatvio_app/core/theme/theme_helper.dart';
import 'package:eatvio_app/features/chat/presentation/bloc/chats_cubit/chats_cubit.dart';
import 'package:eatvio_app/features/chat/presentation/bloc/chats_cubit/chats_state.dart';
import 'package:eatvio_app/features/chat/presentation/pages/chats_screen.dart';
import 'package:eatvio_app/generated/l10n.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:flutter_test/flutter_test.dart';
import 'package:mockito/annotations.dart';
import 'package:mockito/mockito.dart';

import 'chats_screen_test.mocks.dart';

@GenerateNiceMocks([MockSpec<ChatsCubit>()])
void main() {
  group('ChatsScreen', () {
    late MockChatsCubit mockChatsCubit;

    setUp(() {
      mockChatsCubit = MockChatsCubit();
      when(mockChatsCubit.state).thenReturn(
        ChatsState(
          chatRooms: [],
          state: BaseState.loading,
          isLoadingMoreChats: false,
        ),
      );
      when(mockChatsCubit.stream).thenAnswer((_) => Stream.value(
        ChatsState(
          chatRooms: [],
          state: BaseState.loading,
          isLoadingMoreChats: false,
        ),
      ));
    });

    Widget createTestWidget() {
      return MaterialApp(
        theme: ThemeHelper().themeData(),
        localizationsDelegates: const [
          S.delegate,
          GlobalMaterialLocalizations.delegate,
          GlobalWidgetsLocalizations.delegate,
          GlobalCupertinoLocalizations.delegate,
        ],
        supportedLocales: const [Locale('ru')],
        home: BlocProvider<ChatsCubit>(
          create: (context) => mockChatsCubit,
          child: const ChatsScreen(),
        ),
      );
    }

    testWidgets('displays screen', (WidgetTester tester) async {
      await tester.pumpWidget(createTestWidget());
      await tester.pump();

      expect(find.byType(ChatsScreen), findsOneWidget);
    });

    testWidgets('displays search field', (WidgetTester tester) async {
      await tester.pumpWidget(createTestWidget());
      await tester.pump();

      expect(find.text('Поиск'), findsOneWidget);
    });

    testWidgets('displays loading state', (WidgetTester tester) async {
      when(mockChatsCubit.state).thenReturn(
        ChatsState(
          chatRooms: [],
          state: BaseState.loading,
          isLoadingMoreChats: false,
        ),
      );

      await tester.pumpWidget(createTestWidget());
      await tester.pump();

      // Screen should be displayed
      expect(find.byType(ChatsScreen), findsOneWidget);
    });

    testWidgets('displays error state', (WidgetTester tester) async {
      when(mockChatsCubit.state).thenReturn(
        ChatsState(
          chatRooms: [],
          state: BaseState.error,
          isLoadingMoreChats: false,
        ),
      );

      await tester.pumpWidget(createTestWidget());
      await tester.pump();

      // Screen should be displayed
      expect(find.byType(ChatsScreen), findsOneWidget);
    });

    testWidgets('displays screen correctly', (WidgetTester tester) async {
      await tester.pumpWidget(createTestWidget());
      await tester.pump();

      // Screen should be displayed
      expect(find.byType(ChatsScreen), findsOneWidget);
      // Note: getChatRooms is called in initState, which is hard to test without proper setup
    });
  });
}