package 电商系统;

import java.util.Scanner;

public class ArticleManage {
    ArticleSet articleSet = new ArticleSet();

    //仓库初始化，放入一些商品
    public void intitial() {
        Article xiammi11 = new Article();
        xiammi11.setArticle("小米11", 1999, 30, 0);

        Article xiaomi11Pro = new Article();
        xiaomi11Pro.setArticle("小米11pro", 2999, 10, 0);

        Article xiaomiUltre = new Article();
        xiaomiUltre.setArticle("小米至尊版", 3999, 20, 0);

        articleSet.articles[0] = xiammi11;
        articleSet.articles[1] = xiaomi11Pro;
        articleSet.articles[2] = xiaomiUltre;

    }

    //启动菜单
    public void startMenu() {

        boolean flag = true;
        do {
            System.out.println("-----------------------------------");
            System.out.println("1 查看商品信息");
            System.out.println("2 新增商品信息");
            System.out.println("3 删除商品信息");
            System.out.println("4 卖出商品");
            System.out.println("5 商品销售排行榜");
            System.out.println("6 退出");
            System.out.println("-----------------------------------");

            System.out.println("请输入功能编号:");
            Scanner scanner = new Scanner(System.in);
            int funNo = scanner.nextInt();
            switch (funNo) {
                case 1:
                    System.out.println("1 查看商品信息");
                    chakan();
                    break;
                case 2:
                    System.out.println("2 新增商品信息");
                    add();
                    break;
                case 3:
                    System.out.println("3 删除商品信息");
                    delete();
                    break;
                case 4:
                    System.out.println("卖出商品");
//                    saleOut();
                    break;
                case 5:
                    System.out.println("排行榜");
                    leadeBand();
                    break;
                case 6:
                    System.out.println("谢谢，已经退出");
                    flag = false;
                    break;
                default:
                    System.out.println("功能编号出错");
            }
        } while (flag);
    }
    private void chakan() {
        System.out.println("编号\t 名字\t 单价\t库存\t\t已售");
        for (int i = 0; i < articleSet.articles.length; i++) {
            if (articleSet.articles[i] != null) {
                articleSet.articles[i].print(i);
            }
        }
    }
    private void add() {
        System.out.println("请输入商品的名称:");
        Scanner scanner = new Scanner(System.in);
        String name = scanner.next();
        System.out.println("请输入单价:");
        double price = scanner.nextDouble();
        System.out.println("请输入库存:");
        int count = scanner.nextInt();
        System.out.println("请输入已卖数量:");
        int number = scanner.nextInt();

        Article newArticle = new Article();
        newArticle.setArticle(name, price, count, number);

        for (int i = 0; i < articleSet.articles.length; i++) {
            if (articleSet.articles[i] == null) {
                articleSet.articles[i] = newArticle;
                break;
            }
        }
    }

    private void delete() {
        System.out.println("请输入要删除的商品编号:");
        Scanner scanner = new Scanner(System.in);
        int bianhao = scanner.nextInt();
        boolean flag = true;
        for (int i = 0; i < articleSet.articles.length; i++) {
            if (articleSet.articles[i] != null && (i + 1) == bianhao) {
                int j = i;
                while (articleSet.articles[j + 1] != null) {
                    //后面的元素向前移动
                    articleSet.articles[j] = articleSet.articles[j + 1];
                    j++;
                }
                articleSet.articles[j] = null;
                flag = true;
                break; // 后续的空数组元素没有必要执行
            } else {
                flag = false;
            }
            if (flag) {
                System.out.println("删除成功");
            } else {
                System.out.println("删除成功");
            }
        }
    }
    private void leadeBand() {
        for (int i = 0; i < articleSet.articles.length - 1; i++) {
            for (int j = 0; j < articleSet.articles.length - i - 1; j++) {
                if (articleSet.articles[j] != null && articleSet.articles[j + 1] != null) {
                    Article newTemp = articleSet.articles[j + 1];
                    articleSet.articles[j + 1] = newTemp;
                }
            }
        }
    }
}