package model;

public class Book {

    private String bookname;
    private String author;
    private float price;

    public Book(String bookname, String author, float price)
    {
        this.bookname = bookname;
        this.author = author;
        this.price = price;
    }

    public String getBookname() {
        return bookname;
    }
    public String getAuthor() {
        return author;
    }
    public float getPrice() {
        return price;
    }



    public void setBook(String bookname, String author, float price) {
        this.bookname = bookname;
        this.author = author;
        this.price = price;
    }


}



UI
/**
 * @authar HanSin
 * @date 2021/4/9 9:19
 */

package ui;

import java.util.Scanner;

public class Book {

    public static final int SIZE = 10;
    model.Book[] booklist = new model.Book[SIZE];
    int count = 0;

    public Book()
    {

        Scanner scan = new Scanner(System.in);

        printMenu();

        while(true)
        {
            //讀取用戶輸入
            int choice = scan.nextInt();

            if(choice == 5)
            {
                System.out.println("成功退出系統(tǒng)，歡迎再次光臨占哟！");
                break;
            }
            switch(choice)//switch形式
            {
                case 1: addBook(); break;
                case 2: deleteBoo(); break;
                case 3: changeBoo(); break;
                case 4: findBoo(); break;
                default: System.out.println("輸入非法"); printMenu(); continue;//這個(gè)continue 是continue的while磁奖，
            }
        }


    }
    void printMenu()
    {
        //打印菜單
        System.out.println("歡迎...");
        System.out.println("增加圖書(shū)...1");
        System.out.println("刪除圖書(shū)...2");
        System.out.println("修改圖書(shū)...3");
        System.out.println("查詢圖書(shū)...4");
        System.out.println("退出系統(tǒng)...5");
    }

    void addBook()//增加圖書(shū)
    {
        if (count < SIZE)
        {
            System.out.println("當(dāng)前共有:"+count+"本書(shū)!");
            Scanner scan = new Scanner(System.in);
            System.out.println("請(qǐng)輸入圖書(shū)名：");
            String bookname = scan.next();
            System.out.println("請(qǐng)輸入作者：");
            String author = scan.next();
            System.out.println("請(qǐng)輸入單價(jià)：");
            float price = scan.nextFloat();
            model.Book book = new model.Book(bookname,author,price);
            booklist[count] = book;
            count++;
            System.out.println("增加成功挽放！");
            printAllBook();
        }
        else
        {
            System.out.println("圖書(shū)庫(kù)已滿堤舒！");
        }


    }

    void deleteBoo()//刪除圖書(shū)
    {
        Scanner scan = new Scanner(System.in);
        while(true)
        {
            System.out.println("請(qǐng)輸入按哪種方法刪除圖書(shū)：1娃善、序號(hào)/2焚虱、書(shū)名/3订框、返回主菜單");
            int choose = scan.nextInt();
            if(choose == 1)
            {
                System.out.println("請(qǐng)輸入要?jiǎng)h除第幾本書(shū)：");
                int id = scan.nextInt();
                id = orderFind(id);
                //System.out.println(id);
                if(id > -1)
                {
                    for(int i = id; i < count - 1 ; i++)
                        booklist[i]=booklist[i+1];
                    count--;
                    System.out.println("刪除成功箭跳！");
                    printAllBook();
                }
                else
                {
                    System.out.println("輸入錯(cuò)誤晨另！");
                }
            }
            else if(choose == 2)
            {
                System.out.println("請(qǐng)輸入您要?jiǎng)h除的書(shū)名：");
                String name = scan.next();
                int id = nameFind(name);
                if(id > -1)
                {
                    for(int j = id; j<count-1; j++)
                    {
                        booklist[j]=booklist[j+1];
                    }
                    count --;
                    System.out.println("刪除成功！");
                    printAllBook();
                }
                else
                {
                    System.out.println("未查找到您想要的書(shū)名");
                }
            }
            else if(choose == 3)
            {
                printMenu();
                break; 
            }
            else
            {
                System.out.println("輸入非法谱姓！");
            }
        }
    }

    void changeBoo()
    {
        Scanner scan = new Scanner(System.in);
        while(true)
        {
            System.out.println("請(qǐng)輸入按哪種方法修改圖書(shū)：1借尿、序號(hào)/2、書(shū)名/3、返回主菜單");
            int choose = scan.nextInt();
            if(choose == 1)
            {
                System.out.println("請(qǐng)輸入要修改第幾本書(shū)：");
                int number = scan.nextInt();
                int id = orderFind(number);
                if(id > -1)
                {
                    System.out.println("原書(shū)名為："+booklist[id].getBookname()+" 請(qǐng)輸入你要修改為什么書(shū)名：");
                    String str = scan.next();
                    System.out.println("請(qǐng)輸入作者：");
                    String author = scan.next();
                    System.out.println("請(qǐng)輸入單價(jià)：");
                    float price = scan.nextFloat();
                    booklist[id].setBook(str,author,price);
                    System.out.println("修改成功路翻！");
                    printAllBook();
                }
                else
                {
                    System.out.println("輸入錯(cuò)誤狈癞！");
                }
            }
            else if(choose == 2)
            {
                System.out.println("請(qǐng)輸入您要修改的書(shū)名：");
                String name = scan.next();
                int id = nameFind(name);
                if(id > -1)
                {
                    System.out.println("原書(shū)名為："+booklist[id].getBookname()+" 請(qǐng)輸入你要修改為什么書(shū)名：");
                    String str = scan.next();
                    System.out.println("請(qǐng)輸入作者：");
                    String author = scan.next();
                    System.out.println("請(qǐng)輸入單價(jià)：");
                    float price = scan.nextFloat();
                    booklist[id].setBook(str,author,price);
                    System.out.println("修改成功！");
                    printAllBook();
                }
            }
            else if(choose == 3)
            {
                printMenu();
                break;
            }
            else
            {
                System.out.println("輸入非法茂契！");
            }
        }
    }

    void findBoo()
    {
        Scanner scan = new Scanner(System.in);
        while(true)
        {
            System.out.println("請(qǐng)輸入按哪種方法查找圖書(shū)：1蝶桶、序號(hào)/2、書(shū)名/3掉冶、返回主菜單");
            int choose = scan.nextInt();
            if(choose == 1)
            {
                System.out.println("請(qǐng)輸入要查找第幾本書(shū)：");
                int number = scan.nextInt();
                int id = orderFind(number);
                if(id > -1)
                {
                    System.out.println("你要查找的書(shū)名為："+booklist[id].getBookname()+" 作者："+booklist[id].getAuthor()+" 單價(jià)："+booklist[id].getPrice()+"元/本");
                }
                else
                {
                    System.out.println("輸入錯(cuò)誤真竖！");
                }
            }
            else if(choose == 2)
            {
                System.out.println("請(qǐng)輸入您要查找的書(shū)名：");
                String name = scan.next();
                int id = nameFind(name);
                if(id > -1)
                {
                    System.out.println("查找成功，您查找到的書(shū)為第"+(id+1)+"本書(shū)厌小！"+"書(shū)名為："+booklist[id].getBookname()+" 作者："+booklist[id].getAuthor()+" 單價(jià)："+booklist[id].getPrice()+"元/本");
                }
            }
            else if(choose == 3)
            {
                printMenu();
                break;
            }
            else
            {
                System.out.println("輸入非法恢共！");
            }
        }
    }

    void printAllBook() 
    {
        for (int i = 0; i < count; i++)
        {
            System.out.println("第"+(i+1)+"本書(shū)名："+booklist[i].getBookname()+" 作者："+booklist[i].getAuthor()+" 單價(jià)："+booklist[i].getPrice()+"元/本");
        }
    }

    int orderFind(int number)   
    {
        //System.out.println(number);
        if(number <= count)
        {
            int id = number - 1;
            return id;
        }
        else
            return -1;
    }

    int nameFind(String name)
    {
        int id = -1;
        for(int i = 0; i < count; i++)
        {
            if(booklist[i].getBookname().equals(name))
            {
                id = i;
                break;
            }
            else if(i<count) ;


            else {
                System.out.println("未查找到您想要的書(shū)名");
                break;
            }
        }
        return id;
    }

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        new Book();
    }

}