ObjectsAndClasses_Methods/src/Basket.java - master - Nicholas/java_basics

ObjectsAndClasses_Methods/src/Basket.java
122 строки3 KB
Nicholay Sokolovsky
Basket static variables and methods (additional functionality)
06 авг 2023, 11:07
06 авг 2023, 11:07d67246a
public class Basket {

    private static int count = 0;
    private static int allBasketsPrice = 0;
    private static int allBasketsItems = 0;
    private String items;
    private int itemsCount = 0;
    private int totalPrice = 0;
    private int limit;
    private double totalWeight = 0;

    public Basket() {
        increaseCount(1);
        items = "";
        this.limit = 1000000;
    }

    public Basket(int limit) {
        this();
        this.limit = limit;
    }

    /*  Если дадим возможность заполнять корзину сразу строками,
        то потеряем возможность считать кол-во товаров в каждой корзине.
        (либо надо парсить строки, чтобы вытаскивать из них кол-во товара в штуках)
        public Basket(String items, int totalPrice) {
            this();
            this.items = this.items + items;
            this.totalPrice = totalPrice;
        }
    */
    public static int getCount() {
        return count;
    }

    public static void increaseCount(int count) {
        Basket.count = Basket.count + count;
    }

    public static void increaseAllBasketsPrice(int price) {
        allBasketsPrice = allBasketsPrice + price;
    }

    public static void increaseAllBasketsItems(int itemCount) {
        allBasketsItems = allBasketsItems + itemCount;
    }

    public static int getAllBasketsAvgItemPrice() {
        return allBasketsItems == 0 ? 0 : allBasketsPrice / allBasketsItems;
    }

    public static int getAllBasketsAvgBasketPrice() {
        return count == 0 ? 0 : allBasketsPrice / count;
    }

    public void add(String name, int price) {
        add(name, price, 1);
    }

    public void add(String name, int price, int count, double weight) {
        add(name, price, count);
        totalWeight = totalWeight + weight;
    }

    public void add(String name, int price, int count) {
        boolean error = contains(name);

        if (totalPrice + count * price >= limit) {
            error = true;
        }

        if (error) {
            System.out.println("Error occured :(");
            return;
        }

        items = items + "\n" + name + " - " +
                count + " шт. - цена " + price + " руб.";
        totalPrice = totalPrice + count * price;
        itemsCount = itemsCount + count;
        increaseAllBasketsItems(count);
        increaseAllBasketsPrice(count * price);
    }

    public void clear() {
        increaseAllBasketsItems(-itemsCount);
        increaseAllBasketsPrice(-totalPrice);
        items = "";
        itemsCount = 0;
        totalPrice = 0;
        totalWeight = 0;
    }

    public int getItemsCount() {
        return itemsCount;
    }

    public int getItemPositionsCount() {
        return items.split("\r\n|\r|\n").length - 1; //Считаем уол-во строк, оно же кол-во позиций товаров в корзине
    }

    public int getTotalPrice() {
        return totalPrice;
    }

    public double getTotalWeight() {
        return totalWeight;
    }

    public boolean contains(String name) {
        return items.contains(name);
    }

    public void print(String title) {
        System.out.print(title);
        if (items.isEmpty()) {
            System.out.println("Корзина пуста");
        } else {
            System.out.println(items);
        }
    }
}