import 'package:flutter/material.dart';

/* todo:
  - Flag für Ansicht/Bearbeitung
  - individuelle Icons je nach Kategorie
  - Pfand
  - Gesamtpreis
*/

enum Unit { stueck, menge }

enum Category {
  obstUndGemuese,
  brotCerealienUndAufstriche,
  getraenke,
  drogerieUndHaushalt,
  kochenUndBacken,
  oeleSossenUndGewuerze,
  suessesUndKnabbereien
}

class Product {
  final int id = 0;
  final String name;
  final Unit unit;
  final double price; //pro Kilogramm oder Stück
  final double vat;
  final Category category;
  const Product(this.name, this.unit, this.price, this.vat, this.category);
}

class Purchase {
  Product product;
  int amount;
  Purchase(this.product, this.amount);
}

class Basket {
  List<Purchase> purchases;
  int price;
  Basket(this.purchases, this.price);
}

class ShowBasket extends StatelessWidget {
  ShowBasket({super.key});

  //sample data
  static const List<Product> products = [
    Product('Apfel', Unit.stueck, 0.23, 7, Category.obstUndGemuese),
    Product('Mehl', Unit.menge, 0.003, 19, Category.kochenUndBacken),
    Product('Brot', Unit.stueck, 1.23, 7, Category.brotCerealienUndAufstriche),
    Product('Milch', Unit.stueck, 2.23, 3, Category.getraenke),
    Product('Zahnpasta', Unit.stueck, 0.23, 7, Category.drogerieUndHaushalt),
    Product('Pfeffer', Unit.stueck, 0.23, 7, Category.oeleSossenUndGewuerze),
    Product('Schokolade', Unit.menge, 0.23, 7, Category.suessesUndKnabbereien)
  ];

  Basket basket = Basket([
    Purchase(products[0], 20),
    Purchase(products[1], 2200),
    Purchase(products[2], 2),
    Purchase(products[3], 1),
    Purchase(products[4], 1),
    Purchase(products[5], 2),
    Purchase(products[6], 202)
  ], 304);

  @override
  Widget build(BuildContext context) {
    return ListView.builder(
      itemCount: null,
      itemBuilder: (context, index) {
        if (index < basket.purchases.length) {
          return Card(
            child: ListTile(
              leading: const Icon(Icons.abc),
              title: Text(basket.purchases[index].product.name),
              //trailing: Text(),
            ),
          );
        } else {
          return null;
        }
      },
    );
  }
}