GymLink_Flutter/lib/pages/basket.dart

import 'package:flutter/material.dart';
import 'package:gymlink_module_web/components/app_bar.dart';
import 'package:gymlink_module_web/components/basket_item_card.dart';
import 'package:gymlink_module_web/components/heading.dart';
import 'package:gymlink_module_web/tools/prefs.dart';

List<Map<String, dynamic>> cart = [
  {
    "name": "Протеин",
    "image": "product.png",
    "price": "120",
    "details": "Test details",
    "id": "34fa3126-bfaf-5dec-8f4a-b246c097ef73"
  },
  {
    "name": "Протеин",
    "image": "product.png",
    "price": "150",
    "details": "Test details",
    "id": "34a26e82-7656-5e98-a44a-c2d01d0b1ad1123"
  },
  {
    "name": "Протеин",
    "image": "product.png",
    "price": "250",
    "details": "Test details",
    "id": "4fb204b7-3f9e-52a2-bed1-415c00a31a37123"
  },
  {
    "name": "Протеин",
    "image": "product.png",
    "price": "300",
    "details": "Test details",
    "id": "09b2f5bb-683e-5c39-ae89-b8e152fa8bcf123"
  },
  {
    "name": "Протеин",
    "image": "product.png",
    "price": "100",
    "details": "Test details",
    "id": "cd1b6817-db94-5394-be1d-af88af79749f123"
  }
];

//TODO: Сделать правильное удаление из корзины по одному
class BasketPage extends StatefulWidget {
  const BasketPage({super.key});

  @override
  State<BasketPage> createState() => _BasketPageState();
}

class _BasketPageState extends State<BasketPage> {
  List<Map<String, dynamic>> cartItems = [];
  int totalPrice = 0;

  @override
  void initState() {
    super.initState();
    getCart().then((value) {
      setState(() {
        cartItems = cart
            .where((element) => value.any((e) => e['id'] == element['id']))
            .toList();
        totalPrice =
            cartItems.fold(0, (sum, item) => sum + int.parse(item['price']));
      });
    });
  }

  void removeItem(String id) async {
    setState(() {
      cartItems.removeWhere((element) => element['id'] == id);
      totalPrice =
          cartItems.fold(0, (sum, item) => sum + int.parse(item['price']));
    });
    await removeItemFromCart(id);
  }

  Future<void> _deleteItemAlert(String id, String name) async {
    return showDialog<void>(
      context: context,
      barrierDismissible: true,
      builder: (BuildContext context) {
        return AlertDialog(
          title: const Text('Удаление из корзины'),
          content: SingleChildScrollView(
            child: ListBody(
              children: [
                Text('Вы действительно хотите убрать "$name" из корзины?'),
              ],
            ),
          ),
          actions: [
            TextButton(
              child: const Text('Отмена'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
            TextButton(
              child: const Text('Удалить'),
              onPressed: () {
                removeItem(id);
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }

  Future<void> _clearCartAlert() async {
    return showDialog<void>(
      context: context,
      barrierDismissible: true,
      builder: (BuildContext context) {
        return AlertDialog(
          title: const Text('Очистка корзины'),
          content: const SingleChildScrollView(
            child: ListBody(
              children: [
                Text('Вы действительно хотите очистить корзину?'),
              ],
            ),
          ),
          actions: [
            TextButton(
              child: const Text('Отмена'),
              onPressed: () {
                Navigator.of(context).pop();
              },
            ),
            TextButton(
              child: const Text('Очистить'),
              onPressed: () {
                clearCart();
                setState(() {
                  cartItems = [];
                });
                Navigator.of(context).pop();
              },
            ),
          ],
        );
      },
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: const GymLinkAppBar(),
      body: Column(
        children: [
          const GymLinkHeader(title: "Корзина"),
          cartItems.isEmpty
              ? Expanded(
                  child: Center(
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Text('Корзина пуста',
                            style: Theme.of(context).textTheme.bodyLarge),
                        const SizedBox(height: 10),
                        ElevatedButton(
                          onPressed: () => Navigator.pop(context),
                          style: ElevatedButton.styleFrom(
                            backgroundColor: Theme.of(context).primaryColor,
                            shape: const RoundedRectangleBorder(
                              borderRadius:
                                  BorderRadius.all(Radius.circular(50)),
                            ),
                            foregroundColor: Colors.white,
                          ),
                          child: const Text('Вернуться назад'),
                        ),
                      ],
                    ),
                  ),
                )
              : Expanded(
                  child: Row(
                    children: [
                      Expanded(
                        child: ListView.builder(
                          itemCount: cartItems.length,
                          itemBuilder: (context, index) {
                            final item = cartItems[index];
                            return BasketItemCard(
                              name: item['name'],
                              price: item['price'],
                              id: item['id'],
                              image: Image.asset(
                                item['image'],
                                width: 50,
                              ),
                              onTap: () =>
                                  _deleteItemAlert(item['id'], item['name']),
                            );
                          },
                        ),
                      ),
                      const Spacer(),
                      Padding(
                        padding: const EdgeInsetsDirectional.symmetric(
                            horizontal: 10, vertical: 10),
                        child: Column(
                          children: [
                            Text(
                              'Итого: $totalPrice',
                            ),
                            ElevatedButton(
                              onPressed: () {},
                              style: ElevatedButton.styleFrom(
                                backgroundColor: Theme.of(context).primaryColor,
                                shape: const RoundedRectangleBorder(
                                  borderRadius:
                                      BorderRadius.all(Radius.circular(50)),
                                ),
                                foregroundColor: Colors.white,
                              ),
                              child: const Text('Оформить заказ'),
                            ),
                            const SizedBox(height: 10),
                            ElevatedButton(
                              onPressed: _clearCartAlert,
                              style: ElevatedButton.styleFrom(
                                backgroundColor: Theme.of(context).primaryColor,
                                shape: const RoundedRectangleBorder(
                                    borderRadius:
                                        BorderRadius.all(Radius.circular(50))),
                                foregroundColor: Colors.white,
                              ),
                              child: const Text('Очистить корзину'),
                            ),
                          ],
                        ),
                      ),
                      const SizedBox(width: 50),
                    ],
                  ),
                ),
        ],
      ),
    );
  }
}