import 'package:eatvio_app/core/utils/pagination_utils.dart';
import 'package:eatvio_app/core/widgets/data_error_widget.dart';
import 'package:eatvio_app/core/widgets/loader.dart';
import 'package:eatvio_app/features/feed/presentation/bloc/recipes_cubit/recipes_cubit.dart';
import 'package:eatvio_app/features/feed/presentation/bloc/recipes_cubit/recipes_state.dart';
import 'package:eatvio_app/features/feed/presentation/pages/feed_screen.dart';
import 'package:eatvio_app/features/feed/presentation/widgets/recipes_widget.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'package:visibility_detector/visibility_detector.dart';

class Recipes extends StatelessWidget {
  const Recipes({super.key, required this.handleVisibility});
  final Function({required double visibleFraction,required int id, required ViewableContentType type}) handleVisibility;
  @override
  Widget build(BuildContext context) {
    return RefreshIndicator(
      onRefresh: () => context.read<RecipesCubit>().loadRecipesList(),
      child: BlocBuilder<RecipesCubit, RecipesState>(
        builder: (BuildContext context, RecipesState state) {
          if (state.isLoading) {
            return Scaffold(
              backgroundColor: Colors.grey.shade200,
              body: const Loader(),
            );
          }
          if (state.errorMessage != null) {
            return DataErrorWidget(
              onReload: () async {
                context.read<RecipesCubit>().loadRecipesList();
              },
            );
          }

          return NotificationListener<ScrollNotification>(
            onNotification: (notification) {
              loadNewContent(notification, context.read<RecipesCubit>().loadNextPage);
              return false;
            },
            child: ListView.separated(
              padding: const EdgeInsets.symmetric(vertical: 8),
              shrinkWrap: true,
              physics: const BouncingScrollPhysics(),
              itemBuilder: (context, index) {
                return VisibilityDetector(
                  key: ValueKey(index),
                  onVisibilityChanged: (info) {
                      final id = state.recipesList[index].id;
                      handleVisibility(visibleFraction: info.visibleFraction, id: id, type: ViewableContentType.recipes);
                    },
                  child: RecipesWidget(
                    recipe: state.recipesList[index],
                    index: index,
                  ),
                );
              },
              separatorBuilder: (context, index) {
                return const SizedBox(height: 8);
              },
              itemCount: state.recipesList.length,
            ),
          );
        },
      ),
    );
  }
}