Online-Shop/OnlineShop.java

package Shop;


import java.io.File;
import java.io.FileNotFoundException;
import java.util.ArrayList;
import java.util.Scanner;

import static Shop.Shop.cart;

public class OnlineShop {
    ArrayList<Products> warehouse;

        public Object OnlineShop() throws FileNotFoundException { //readFile-Methode
            warehouse = new ArrayList<>();

            //Einlesen
            Scanner scan = new Scanner(new File("resources/produkte.csv")); //Scanner erstellen
            scan.nextLine();

            while (scan.hasNextLine()) { //Solange da noch Zeilen im Dokument sind...
                String Line = scan.nextLine().trim();

                while (scan.hasNextLine()) {
                    String line = scan.nextLine().trim();
                    String[] Parts = line.split(",");

                    // ANNAHME: Die CSV-Zeile hat 6 Spalten (ID, Name, Gewicht, NetWorth, Tax, Stock)
                    if (Parts.length == 6) {
                        try {
                            int productID = Integer.parseInt(Parts[0].trim()); // ID ist jetzt da
                            String Name = Parts[1].trim();
                            double weight = Double.parseDouble(Parts[2].trim());
                            double netWorth = Double.parseDouble(Parts[3].trim());
                            double tax = Double.parseDouble(Parts[4].trim()); // z.B. 7.0 oder 19.0
                            int stock = Integer.parseInt(Parts[5].trim());

                            Products prod = new Products(Name, weight, netWorth, tax, stock, productID);
                            warehouse.add(prod);
                        } catch (NumberFormatException e) {
                            System.err.println("Fehler beim Parsen numerischer Daten in Zeile: " + Line);
                        }
                    }
                }
                scan.close();
            }

            class OrderCustomer {
                private String CustomerName;
                private String Adress;
                private Cart cart;
                private double wholeAmount;

                public OrderCustomer(String Name, String Adress, Cart cart, double wholeAmount) {
                    this.CustomerName = Name;
                    this.Adress = Adress;
                    this.cart = cart;
                    this.wholeAmount = wholeAmount;
                }

                public String getName() {
                    return CustomerName;
                }

                public String getAdresse() {
                    return Adress;
                }

                public Cart getCart() {
                    return cart;
                }

                public double wholeAmount() {
                    return wholeAmount;
                }
            }
        return 0;


    Products getProductById(int ProductID) {
        int i = 0;
        while (i < warehouse.size()) {
            if (warehouse.get(i).getProductID() == id) {
                return warehouse.get(i);
            }
            i++;
        }
        return null;
    }

    public void showProducts() {
        int i = 0;
        while (i < warehouse.size()) {
            Products p = warehouse.get(i);
            System.out.println(p.getProductID() + " | " +  p.getName() + " | " +
                            String.format("%.2f €", p.getGrossPrice()) + " | Bestand: " + p.getStock());
            i++;
        }
    }

    OrderCustomer createOrder(String customerName, String Adress, Cart cart) {
        double net = Cart.getnetWorth();
        double tax = Cart.getTaxDelivery();
        double gross = Cart.getGrossTotal();

        Order order = new Order(name, Address, cart, net, tax, gross);
        cart.clear();
        return order;
    }


    public static class Order {
        private String customerName;
        private String address;
        private Cart cart;
        private double net;
        private double tax;
        private double gross;

        public Order(String customerName, String address, Cart cart,
                     double net, double tax, double gross) {
            this.customerName = customerName;
            this.address = address;
            this.cart = cart.copy();
            this.net = net;
            this.tax = tax;
            this.gross = gross;
        }

        public void printConfirmation() {
            System.out.println("===== BESTELLBESTÄTIGUNG =====");
            System.out.println("Name: " + customerName);
            System.out.println("Adresse: " + address);
            cart.printCart();
            System.out.println("Netto: " + net + " €");
            System.out.println("MwSt: " + tax + " €");
            System.out.println("Brutto: " + gross + " €");
        }
    }
}
}