meals/lib/screens/CategoriesScreen.dart

import 'package:flutter/material.dart';
import 'package:meals/data/dummy_categories.dart';
import 'package:meals/models/Category.dart';
import 'package:meals/models/Meal.dart';
import 'package:meals/screens/MealsScreen.dart';
import 'package:meals/widgets/CategoryGridItem.dart';

class CategoriesScreen extends StatelessWidget {
  final void Function(Meal meal) onToggleFavorite;

  const CategoriesScreen({super.key, required this.onToggleFavorite});

  void _selectCategory(BuildContext context, Category category) {
    final meals = dummyMeals
        .where((Meal meal) => meal.categories.contains(category.id))
        .toList();

    Navigator.push(
        context,
        MaterialPageRoute(
            builder: (ctx) =>
                MealsScreen(title: category.title,
                  meals: meals,
                  onToggleFavorite: onToggleFavorite,)));
  }

  @override
  Widget build(BuildContext context) {
    return GridView(
        padding: const EdgeInsets.all(24),
        gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount(
          crossAxisCount: 2,
          childAspectRatio: 1.5,
          crossAxisSpacing: 20,
          mainAxisSpacing: 20,
        ),
        children: [
          for (final category in availableCategories)
            CategoryGridItem(
                category: category,
                onClickCallback: () {
                  _selectCategory(
                    context,
                    category,
                  );
                })
        ]);
  }
}