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package com.company;

import java.util.Scanner;

public class BookManage {
BookSet bookSet = new BookSet();

public BookManage() {
}

public void initial() {
    Book jichujiaochen = new Book();
    jichujiaochen.setBook("java基础教程", 0, 2007.0D);
    Book shuju = new Book();
    shuju.setBook("数据库技术", 1, 0.0D);
    Book renyue = new Book();
    shuju.setBook("人月神话", 1, 0.0D);
    this.bookSet.books[0] = jichujiaochen;
    this.bookSet.books[1] = shuju;
    this.bookSet.books[2] = renyue;
}

public void startMenu() {
    boolean flag = true;

    do {
        System.out.println("*********************");
        System.out.println("1 查看图书");
        System.out.println("2 新增图书");
        System.out.println("3 删除图书");
        System.out.println("4 借出图书");
        System.out.println("5 归还图书");
        System.out.println("6 退 出");
        System.out.println("*********************");
        Scanner scanner = new Scanner(System.in);
        System.out.println("请选择");
        int gongnengbianhao = scanner.nextInt();
        switch(gongnengbianhao) {
        case 1:
            System.out.println("查看图书信息");
            this.chakan();
            break;
        case 2:
            System.out.println("新增图书信息");
            this.add();
            break;
        case 3:
            System.out.println("删除图书信息");
            this.delete();
            break;
        case 4:
            System.out.println("借出图书");
            break;
        case 5:
            System.out.println("归还图书");
            break;
        case 6:
            System.out.println("退出系统");
            this.exit();
            flag = false;
            break;
        default:
            System.out.println("你输入的有误");
        }
    } while(flag);

}

public void exit() {
    System.out.println("退出");
}

public void sell() {
    System.out.println("输入你要卖出的商品名称:");
    Scanner scanner = new Scanner(System.in);
    String name = scanner.next();

    for(int i = 0; i < this.bookSet.books.length; ++i) {
        if (this.bookSet.books[i].name.equals(name)) {
            System.out.println("输入卖出的数量");
            int shoumai = scanner.nextInt();
            if (shoumai < this.bookSet.books[i].state) {
                this.bookSet.books[i].state -= shoumai;
                this.bookSet.books[i].state += shoumai;
            }

            System.out.println("售卖成功");
            break;
        }
    }

}

public void delete() {
    System.out.println("亲输入你要删除的商品编号");
    Scanner scanner = new Scanner(System.in);
    int delNo = scanner.nextInt();

    for(int i = 0; i < this.bookSet.books.length; ++i) {
        if (this.bookSet.books[i] != null && i + 1 == delNo) {
            for(int j = i; this.bookSet.books[j + i] != null; ++j) {
                this.bookSet.books[j] = this.bookSet.books[j + i];
            }

            this.bookSet.books[i] = null;
            System.out.println("删除成功！");
        } else {
            System.out.println("删除失败！");
        }
    }

}

public void chakan() {
    System.out.println("编号:\t 名称 \t 状态 \t 日期");

    for(int i = 0; i < this.bookSet.books.length; ++i) {
        if (this.bookSet.books[i] != null) {
            this.bookSet.books[i].print(i + 1);
        }
    }

}

public void add() {
    System.out.println("请输入图书名称");
    Scanner scanner = new Scanner(System.in);
    String name = scanner.next();
    System.out.println("请输入状态");
    double zt = scanner.nextDouble();
    System.out.println("请输入日期");
    int riqi = scanner.nextInt();
    Book newBook = new Book();
    newBook.setBook(name, (int)zt, (double)riqi);

    for(int i = 0; i < this.bookSet.books.length; ++i) {
        if (this.bookSet.books[i] == null) {
            this.bookSet.books[i] = newBook;
            break;
        }
    }

}

}

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