final DateTime now = DateTime.now();

enum TransaktionArt { monatlBeitrag, aufladung, einkauf, korrektur }

enum Unit { stueck, menge }

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

class Transaction {
  int id = 0;
  int amount;
  TransaktionArt type;
  DateTime date;
  List<Basket>? basket;
  String? description;
  Transaction(
      {required this.type,
      required this.amount,
      required this.date,
      this.description,
      this.basket});
}

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 Basket {
  Product products;
  int amount;
  Basket(this.products, this.amount);
}

class SampleData {
  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),
    Product('Flaschenpfand', Unit.stueck, -0.15, 0, Category.pfand)
  ];

  static List<Basket> basket = [
    Basket(products[0], 20),
    Basket(products[1], 2200),
    Basket(products[2], 2),
    Basket(products[3], 1),
    Basket(products[4], 1),
    Basket(products[5], 2),
    Basket(products[6], 222)
  ];

  static List<Basket> basket2 = [
    Basket(products[0], 22),
    Basket(products[1], 2241),
    Basket(products[3], 2),
    Basket(products[4], 4),
    Basket(products[6], 2),
    Basket(products[7], 5)
  ];

  static List<Basket> basket3 = [
    Basket(products[0], -2),
    Basket(products[1], 21),
    Basket(products[3], -4),
    Basket(products[4], 1),
    Basket(products[6], 5)
  ];

  List<Transaction> transactions = [
    Transaction(
      type: TransaktionArt.monatlBeitrag,
      amount: 0,
      date: now,
    ),
    Transaction(
      type: TransaktionArt.aufladung,
      amount: 2042,
      date: now,
    ),
    Transaction(
        type: TransaktionArt.einkauf,
        amount: -2442,
        date: now.subtract(const Duration(days: 2)),
        basket: basket),
    Transaction(
      type: TransaktionArt.korrektur,
      amount: 2332,
      date: now.subtract(const Duration(hours: 5)),
      description: 'Korrektur des Warenkorbs',
      basket: basket3,
    ),
    Transaction(
      type: TransaktionArt.monatlBeitrag,
      amount: 0,
      date: now,
    ),
    Transaction(
      type: TransaktionArt.aufladung,
      amount: 2042,
      date: now,
    ),
    Transaction(
        type: TransaktionArt.einkauf,
        amount: -2442,
        date: now.subtract(const Duration(days: 2)),
        basket: basket2),
    Transaction(
        type: TransaktionArt.korrektur,
        amount: 2332,
        date: now.subtract(const Duration(hours: 5)),
        description: 'Korrektur des FinanzAK'),
    Transaction(
      type: TransaktionArt.monatlBeitrag,
      amount: 0,
      date: now,
    ),
    Transaction(
      type: TransaktionArt.aufladung,
      amount: 2042,
      date: now,
    ),
    Transaction(
      type: TransaktionArt.einkauf,
      amount: -2442,
      date: now.subtract(const Duration(days: 2)),
      basket: basket,
    ),
    Transaction(
        type: TransaktionArt.korrektur,
        amount: 2332,
        date: now.subtract(const Duration(hours: 5)),
        description: 'Korrektur des Warenkorbs'),
    Transaction(
      type: TransaktionArt.monatlBeitrag,
      amount: 0,
      date: now,
    ),
    Transaction(
      type: TransaktionArt.aufladung,
      amount: 2042,
      date: now,
    ),
    Transaction(
        type: TransaktionArt.einkauf,
        amount: -2442,
        date: now.subtract(const Duration(days: 2)),
        basket: basket),
    Transaction(
        type: TransaktionArt.korrektur,
        amount: 2332,
        date: now.subtract(const Duration(hours: 5)),
        description: 'Korrektur des Warenkorbs'),
    Transaction(
      type: TransaktionArt.monatlBeitrag,
      amount: 0,
      date: now,
    ),
    Transaction(
      type: TransaktionArt.aufladung,
      amount: 2042,
      date: now,
    ),
    Transaction(
        type: TransaktionArt.einkauf,
        amount: -2442,
        date: now.subtract(const Duration(days: 2)),
        basket: basket2),
    Transaction(
        type: TransaktionArt.korrektur,
        amount: 2332,
        date: now.subtract(const Duration(hours: 5)),
        description: 'Korrektur des Warenkorbs'),
  ];
}