home.dart

// Copyright 2020 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'package:flutter/material.dart';
import 'package:go_router/go_router.dart';
import 'package:provider/provider.dart';
import '../models/favorites.dart';
import 'favorites.dart';

class HomePage extends StatelessWidget {
  static String routeName = '/';

  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('Testing Sample'),
        actions: <Widget>[
          TextButton.icon(
            onPressed: () {
              context.go('/${FavoritesPage.routeName}');
            },
            icon: const Icon(Icons.favorite_border),
            label: const Text('Favorites'),
          ),
        ],
      ),
      body: ListView.builder(
        itemCount: 100,
        cacheExtent: 20.0,
        padding: const EdgeInsets.symmetric(vertical: 16),
        itemBuilder: (context, index) => ItemTile(index),
      ),
    );
  }
}

class ItemTile extends StatelessWidget {
  final int itemNo;

  const ItemTile(this.itemNo, {super.key});

  @override
  Widget build(BuildContext context) {
    var favoritesList = Provider.of<Favorites>(context);

    return Padding(
      padding: const EdgeInsets.all(8.0),
      child: ListTile(
        leading: CircleAvatar(
          backgroundColor: Colors.primaries[itemNo % Colors.primaries.length],
        ),
        title: Text('Item $itemNo', key: Key('text_$itemNo')),
        trailing: IconButton(
          key: Key('icon_$itemNo'),
          icon:
              favoritesList.items.contains(itemNo)
                  ? const Icon(Icons.favorite)
                  : const Icon(Icons.favorite_border),
          onPressed: () {
            !favoritesList.items.contains(itemNo)
                ? favoritesList.add(itemNo)
                : favoritesList.remove(itemNo);
            ScaffoldMessenger.of(context).showSnackBar(
              SnackBar(
                content: Text(
                  favoritesList.items.contains(itemNo)
                      ? 'Added to favorites.'
                      : 'Removed from favorites.',
                ),
                duration: const Duration(seconds: 1),
              ),
            );
          },
        ),
      ),
    );
  }
}