Task 23 — Заказы и меню

package Task23;

public final class Dish implements Item{
    private int coast;
    private String name;
    private String description;
    Dish(String name,String description){
        this.coast = 0;
        this.name = name;
        this.description = description;
    }
    Dish(int coast,String name,String description){
        this.coast = coast;
        this.name = name;
        this.description = description;
    }
    @Override
    public int getCoast() {
        return coast;
    }
    @Override
    public String getName() {
        return name;
    }
    @Override
    public String getDescription() {
        return description;
    }

    @Override
    public void setCoast(int coast) {
        this.coast = coast;
    }

    @Override
    public void setName(String name) {
        this.name = name;

    }
    @Override
    public void setDescription(String description) {
        this.description = description;
    }
    public String toString(){
        return "Coast = " + getCoast() + ", name = " + getName() + ", description = " + getDescription() + "\n";
    }
}

package Task23;

final class Drink implements Item{

    private int coast;
    private String name;
    private String description;
    Drink(String name,String description){
        this.coast = 0;
        this.name = name;
        this.description = description;
    }
    Drink(int coast,String name,String description){
        this.coast = coast;
        this.name = name;
        this.description = description;
    }
    @Override
    public int getCoast() {
        return coast;
    }
    @Override
    public String getName() {
        return name;
    }
    @Override
    public String getDescription() {
        return description;
    }

    @Override
    public void setCoast(int coast) {
        this.coast = coast;
    }

    @Override
    public void setName(String name) {
        this.name = name;
    }

    @Override
    public void setDescription(String description) {
        this.description = description;
    }
}

package Task23;

import java.util.ArrayList;
import java.util.List;

public class InternetOrder {
    private Order[] orders;
    public Order getOrder(String name){
        return new Order(1);
    }
    public void addDish(Dish dish,String name){
        return;
    }
    public boolean removeOrder(String name){
        return true;
    }
    public int freeTableNumber(){
        return 0;
    }
    public int[] freeTableNumbers(){
        return new int[]{};
    }
    public Order[] getOrders(){
        return new Order[]{};
    }
    public double orderCoastSummary(){
        return 0.0;
    }
    public int dishQuantity(String dishName){
        return 0;
    }
}

package Task23;

public interface Item {
    public int getCoast();

    public String getName();

    public String getDescription();
    public void setCoast(int coast);

    public void setName(String name);

    public void setDescription(String description);
}

package Task23;


import java.util.ArrayList;
import java.util.Comparator;
import java.util.List;
import java.util.stream.Collectors;

public class Order  {
    private List<Item> items;
    private int size;
    private Dish[] dishes;
    Order(int size){
        this.items = new ArrayList<>();
    }
    public boolean add(Dish dish){
        return items.add(dish);
    }
    public boolean remove(String Name){
        for(int i = 0; i < items.size();i++){
            if(items.get(i).getName().equals(Name)){
                items.remove(i);
                return true;
            }
        }
        return false;
    }
    public int removaAll(String Name){
        int count = 0;
        for (int i = 0; i < items.size();i++){
            Item temp = items.get(i);
            if (temp.getName().equals(Name)){
                count++;
                items.remove(i);
            }
        }
        return count;
    }
    public int dishQuantity(){
        return items.size();
    }
    public int dishQuantity(String Name){
        return (int) items.stream().filter(n->n.getName().equals(Name)).count();
    }

    public Dish[] getDishes() {
        return items.toArray(new Dish[0]);
    }
    public double costTotal(){
        return items.stream().mapToDouble(Item::getCoast).sum();
    }
    public String[] dishesName(){
        return new String[]{items.stream().filter(n -> n.getName() != "").toArray().toString()};
    }
    public Dish[] sortedDishesByCostDesc(){
        return  items.stream().sorted(Comparator.comparingInt(Item::getCoast)).toList().toArray(new Dish[0]);
    }
}

package Task23;

import java.util.Arrays;

public class Test {
    public static void main(String[] args) {
        Order order = new Order(5);
        order.add(new Dish(450,"Оливье","Холодное блюдо"));
        order.add(new Dish(300,"Лимонад","Напиток"));
        order.add(new Dish(600,"Рёбра","Горячее блюдо"));
        order.add(new Dish(400,"Борщ","Горячее блюдо"));
        System.out.println(order.remove("Лимонад"));
        System.out.println(order.dishQuantity());
        System.out.println(order.costTotal());
        System.out.println(order.dishQuantity("Борщ"));
        System.out.println(Arrays.stream(order.sortedDishesByCostDesc()).toList().toString());
    }
}