import 'package:eatvio_app/app_keys.dart';
import 'package:eatvio_app/core/theme/theme_helper.dart';
import 'package:eatvio_app/features/blog_post_create/bloc/blog_post_create_cubit/blog_post_create_cubit.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:flutter_test/flutter_test.dart';

import '../../fixtures/doubles/blog_post_doubles.dart';

void main() {
  group('Blog Post Creation Basic Widget Tests', () {
    late FixtureBlogPostRepository blogPostRepository;
    late BlogPostCreateCubit blogPostCreateCubit;

    setUp(() {
      blogPostRepository = FixtureBlogPostRepository();
      blogPostCreateCubit = BlogPostCreateCubit(blogPostRepository: blogPostRepository);
    });

    tearDown(() {
      blogPostCreateCubit.close();
    });

    Widget createTestWidget(Widget child) {
      return MaterialApp(
        theme: ThemeHelper().themeData(),
        home: BlocProvider<BlogPostCreateCubit>(
          create: (context) => blogPostCreateCubit,
          child: Scaffold(body: SingleChildScrollView(child: child)),
        ),
      );
    }

    testWidgets('should create BlogPostCreateCubit successfully', (WidgetTester tester) async {
      // Arrange & Act
      final cubit = BlogPostCreateCubit(blogPostRepository: blogPostRepository);

      // Assert
      expect(cubit, isA<BlogPostCreateCubit>());

      cubit.close();
    });

    testWidgets('should display basic blog post form fields', (WidgetTester tester) async {
      // Arrange
      Widget formWidget = Column(
        children: [
          TextFormField(
            key: AppKeys.blogPostCreateScreenTitleTextField,
            decoration: const InputDecoration(labelText: 'Заголовок', hintText: 'Введите заголовок поста'),
          ),
          const SizedBox(height: 16),
          TextFormField(
            key: AppKeys.blogPostCreateScreenContentTextField,
            decoration: const InputDecoration(labelText: 'Описание'),
            maxLines: 6,
            minLines: 4,
          ),
          const SizedBox(height: 16),
          TextFormField(
            key: AppKeys.blogPostCreateScreenVideoLinkTextField,
            decoration: const InputDecoration(labelText: 'Ссылка на видео'),
          ),
          const SizedBox(height: 16),
          ElevatedButton(key: AppKeys.blogPostCreateScreenCreateButton, onPressed: () {}, child: const Text('Опубликовать')),
        ],
      );

      // Act
      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.byKey(AppKeys.blogPostCreateScreenTitleTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenContentTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenVideoLinkTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenCreateButton), findsOneWidget);
    });

    testWidgets('should update title when user types in title field', (WidgetTester tester) async {
      // Arrange
      Widget formWidget = TextFormField(
        key: AppKeys.blogPostCreateScreenTitleTextField,
        decoration: const InputDecoration(labelText: 'Заголовок', hintText: 'Введите заголовок поста'),
      );

      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      const testTitle = 'Тестовый заголовок поста';

      // Act
      await tester.enterText(find.byKey(AppKeys.blogPostCreateScreenTitleTextField), testTitle);
      await tester.pump();

      // Assert
      expect(find.text(testTitle), findsOneWidget);
    });

    testWidgets('should update description when user types in description field', (WidgetTester tester) async {
      // Arrange
      Widget formWidget = TextFormField(
        key: AppKeys.blogPostCreateScreenContentTextField,
        decoration: const InputDecoration(labelText: 'Описание'),
        maxLines: 6,
        minLines: 4,
      );

      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      const testDescription = 'Это тестовое описание блог поста';

      // Act
      await tester.enterText(find.byKey(AppKeys.blogPostCreateScreenContentTextField), testDescription);
      await tester.pump();

      // Assert
      expect(find.text(testDescription), findsOneWidget);
    });

    testWidgets('should update video URL when user types in video field', (WidgetTester tester) async {
      // Arrange
      Widget formWidget = TextFormField(
        key: AppKeys.blogPostCreateScreenVideoLinkTextField,
        decoration: const InputDecoration(labelText: 'Ссылка на видео'),
      );

      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      const testVideoUrl = 'https://youtube.com/watch?v=example';

      // Act
      await tester.enterText(find.byKey(AppKeys.blogPostCreateScreenVideoLinkTextField), testVideoUrl);
      await tester.pump();

      // Assert
      expect(find.text(testVideoUrl), findsOneWidget);
    });

    testWidgets('should display form labels correctly', (WidgetTester tester) async {
      // Arrange
      Widget formWidget = const Column(children: [Text('Заголовок'), Text('Описание'), Text('Ссылка на видео')]);

      // Act
      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.text('Заголовок'), findsOneWidget);
      expect(find.text('Описание'), findsOneWidget);
      expect(find.text('Ссылка на видео'), findsOneWidget);
    });

    testWidgets('should display placeholder text in title field', (WidgetTester tester) async {
      // Arrange
      Widget formWidget = TextFormField(
        key: AppKeys.blogPostCreateScreenTitleTextField,
        decoration: const InputDecoration(labelText: 'Заголовок', hintText: 'Введите заголовок поста'),
      );

      // Act
      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.text('Введите заголовок поста'), findsOneWidget);
    });

    testWidgets('should display create button', (WidgetTester tester) async {
      // Arrange
      Widget formWidget = ElevatedButton(key: AppKeys.blogPostCreateScreenCreateButton, onPressed: () {}, child: const Text('Опубликовать'));

      // Act
      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.byKey(AppKeys.blogPostCreateScreenCreateButton), findsOneWidget);
      expect(find.text('Опубликовать'), findsOneWidget);
    });

    testWidgets('should handle button tap', (WidgetTester tester) async {
      // Arrange
      bool buttonPressed = false;
      Widget formWidget = ElevatedButton(
        key: AppKeys.blogPostCreateScreenCreateButton,
        onPressed: () {
          buttonPressed = true;
        },
        child: const Text('Опубликовать'),
      );

      await tester.pumpWidget(createTestWidget(formWidget));
      await tester.pumpAndSettle();

      // Act
      await tester.tap(find.byKey(AppKeys.blogPostCreateScreenCreateButton));
      await tester.pump();

      // Assert
      expect(buttonPressed, isTrue);
    });

    testWidgets('should display loading state', (WidgetTester tester) async {
      // Arrange
      Widget loadingWidget = const Center(child: CircularProgressIndicator());

      // Act
      await tester.pumpWidget(createTestWidget(loadingWidget));
      await tester.pump();

      // Assert
      expect(find.byType(CircularProgressIndicator), findsOneWidget);
    });

    testWidgets('should display error message', (WidgetTester tester) async {
      // Arrange
      Widget errorWidget = const Center(child: Text('Произошла ошибка при создании блог поста'));

      // Act
      await tester.pumpWidget(createTestWidget(errorWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.text('Произошла ошибка при создании блог поста'), findsOneWidget);
    });

    testWidgets('should display success message', (WidgetTester tester) async {
      // Arrange
      Widget successWidget = const Center(child: Text('Блог пост успешно создан!'));

      // Act
      await tester.pumpWidget(createTestWidget(successWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.text('Блог пост успешно создан!'), findsOneWidget);
    });

    testWidgets('should validate required fields', (WidgetTester tester) async {
      // Arrange
      Widget validationWidget = Column(
        children: [
          TextFormField(
            key: AppKeys.blogPostCreateScreenTitleTextField,
            decoration: const InputDecoration(labelText: 'Заголовок', errorText: 'Заголовок обязателен'),
          ),
          const SizedBox(height: 16),
          TextFormField(
            key: AppKeys.blogPostCreateScreenContentTextField,
            decoration: const InputDecoration(labelText: 'Описание', errorText: 'Описание обязательно'),
          ),
        ],
      );

      // Act
      await tester.pumpWidget(createTestWidget(validationWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.text('Заголовок обязателен'), findsOneWidget);
      expect(find.text('Описание обязательно'), findsOneWidget);
    });

    testWidgets('should display form with all required fields', (WidgetTester tester) async {
      // Arrange
      Widget completeForm = Column(
        children: [
          TextFormField(
            key: AppKeys.blogPostCreateScreenTitleTextField,
            decoration: const InputDecoration(labelText: 'Заголовок', hintText: 'Введите заголовок поста'),
          ),
          const SizedBox(height: 16),
          TextFormField(
            key: AppKeys.blogPostCreateScreenContentTextField,
            decoration: const InputDecoration(labelText: 'Описание'),
            maxLines: 6,
            minLines: 4,
          ),
          const SizedBox(height: 16),
          TextFormField(
            key: AppKeys.blogPostCreateScreenVideoLinkTextField,
            decoration: const InputDecoration(labelText: 'Ссылка на видео'),
          ),
          const SizedBox(height: 32),
          ElevatedButton(key: AppKeys.blogPostCreateScreenCreateButton, onPressed: () {}, child: const Text('Опубликовать')),
        ],
      );

      // Act
      await tester.pumpWidget(createTestWidget(completeForm));
      await tester.pumpAndSettle();

      // Assert
      expect(find.byKey(AppKeys.blogPostCreateScreenTitleTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenContentTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenVideoLinkTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenCreateButton), findsOneWidget);
    });

    testWidgets('should display image upload widget', (WidgetTester tester) async {
      // Arrange
      Widget imageWidget = GestureDetector(
        key: AppKeys.imageWidget,
        onTap: () {},
        child: Container(
          height: 200,
          width: double.infinity,
          decoration: BoxDecoration(
            border: Border.all(color: Colors.grey),
            borderRadius: BorderRadius.circular(8),
          ),
          child: const Center(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Icon(Icons.add_photo_alternate, size: 48, color: Colors.grey),
                SizedBox(height: 8),
                Text('Добавить изображение'),
              ],
            ),
          ),
        ),
      );

      // Act
      await tester.pumpWidget(createTestWidget(imageWidget));
      await tester.pumpAndSettle();

      // Assert
      expect(find.byKey(AppKeys.imageWidget), findsOneWidget);
      expect(find.text('Добавить изображение'), findsOneWidget);
    });

    testWidgets('should handle image upload tap', (WidgetTester tester) async {
      // Arrange
      bool imageUploadTapped = false;
      Widget imageWidget = GestureDetector(
        key: AppKeys.imageWidget,
        onTap: () {
          imageUploadTapped = true;
        },
        child: Container(
          height: 200,
          width: double.infinity,
          decoration: BoxDecoration(
            border: Border.all(color: Colors.grey),
            borderRadius: BorderRadius.circular(8),
          ),
          child: const Center(
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                Icon(Icons.add_photo_alternate, size: 48, color: Colors.grey),
                SizedBox(height: 8),
                Text('Добавить изображение'),
              ],
            ),
          ),
        ),
      );

      await tester.pumpWidget(createTestWidget(imageWidget));
      await tester.pumpAndSettle();

      // Act
      await tester.tap(find.byKey(AppKeys.imageWidget));
      await tester.pump();

      // Assert
      expect(imageUploadTapped, isTrue);
    });

    testWidgets('should display blog post creation form with image and video options', (WidgetTester tester) async {
      // Arrange
      Widget completeForm = Column(
        children: [
          const Text('Заголовок'),
          const SizedBox(height: 8),
          TextFormField(
            key: AppKeys.blogPostCreateScreenTitleTextField,
            decoration: const InputDecoration(hintText: 'Введите заголовок поста'),
          ),
          const SizedBox(height: 16),
          const Text('Описание'),
          const SizedBox(height: 8),
          TextFormField(key: AppKeys.blogPostCreateScreenContentTextField, decoration: const InputDecoration(), maxLines: 6, minLines: 4),
          const SizedBox(height: 16),
          const Text('Изображение поста'),
          const SizedBox(height: 8),
          GestureDetector(
            key: AppKeys.imageWidget,
            onTap: () {},
            child: Container(
              height: 200,
              width: double.infinity,
              decoration: BoxDecoration(
                border: Border.all(color: Colors.grey),
                borderRadius: BorderRadius.circular(8),
              ),
              child: const Center(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Icon(Icons.add_photo_alternate, size: 48, color: Colors.grey),
                    SizedBox(height: 8),
                    Text('Добавить изображение'),
                  ],
                ),
              ),
            ),
          ),
          const SizedBox(height: 16),
          const Text('Ссылка на видео'),
          const SizedBox(height: 8),
          TextFormField(key: AppKeys.blogPostCreateScreenVideoLinkTextField, decoration: const InputDecoration()),
          const SizedBox(height: 32),
          ElevatedButton(key: AppKeys.blogPostCreateScreenCreateButton, onPressed: () {}, child: const Text('Опубликовать')),
        ],
      );

      // Act
      await tester.pumpWidget(createTestWidget(completeForm));
      await tester.pumpAndSettle();

      // Assert
      expect(find.text('Заголовок'), findsOneWidget);
      expect(find.text('Описание'), findsOneWidget);
      expect(find.text('Изображение поста'), findsOneWidget);
      expect(find.text('Ссылка на видео'), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenTitleTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenContentTextField), findsOneWidget);
      expect(find.byKey(AppKeys.imageWidget), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenVideoLinkTextField), findsOneWidget);
      expect(find.byKey(AppKeys.blogPostCreateScreenCreateButton), findsOneWidget);
    });
  });
}