package org.example;

import java.util.Collection;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;

public class TUI {

    Shop shop;
    boolean exit = false;

    public TUI(Shop shop) {
        this.shop = shop;
    }

    public void processInput(String input) {
        String[] tokens = input.split("\\s+");
        String command = tokens[0];
        switch (command) {
            case "exit" -> exit();
            case "checkout" -> checkout();
            case "list" -> listProducts(shop.products);
            case "cart" -> listCart(shop.getCart());
            case "add" -> shop.addProductToCart(shop.getProductById(Integer.parseInt(tokens[1])));
            case "remove" -> shop.removeProductFromCart(shop.getProductById(Integer.parseInt(tokens[1])));
            case "set" ->
                    shop.setProductQuantityInCart(shop.getProductById(Integer.parseInt(tokens[1])), Integer.parseInt(tokens[2]));
            default -> System.out.println("Unbekannter Befehl: " + input);
        }
    }

    public void exit() {
        exit = true;
    }

    public void listProducts(HashMap<Product, Integer> productStock) {
        productStock.keySet().stream().sorted(Comparator.comparingInt(p -> p.id)).forEach(product -> {
            System.out.println("(" + product.id + ") " + product.name + ", Preis: " + product.price + ", Gewicht: " + product.weight + ", Auf Lager: " + productStock.get(product));
        });
    }

    public void listCart(HashMap<Product, Integer> cardContents) {
        cardContents.forEach((product, count) -> {
            System.out.println("(" + product.id + ") " + product.name + ", Preis: " + product.price + ", Gewicht: " + product.weight + ", Anzahl: " + count);
        });
    }

    public void checkout() {
        Order order = shop.checkout();
        System.out.println("MwSt.: " + order.calculateTotalVat() + "€");
        System.out.println("Versand: " + order.calculateShippingCost() + "€");
        System.out.println("Brutto: " + order.calculateTotalPriceWithVat() + "€");
    }

}