/**
 * 酒店.
 *
 * @author jialin.li
 * @date 2019-12-27 11:37
 */
public interface Hotel {
    /** 订酒店 **/
    void hotelBooking(String name);
    /** 付款 **/
    double pay();
}

/**
 * 橘子酒店.
 *
 * @author jialin.li
 * @date 2019-12-27 13:17
 */
public class OrangeHotel implements Hotel {

    @Override
    public void hotelBooking(String name) {
        System.out.println(name + ",欢迎入住橘子酒店");
    }

    @Override
    public double pay() {
        return 120d;
    }
}

/**
 * 同程艺龙
 *
 * @author jialin.li
 * @date 2019-12-27 13:20
 */
public class Elong implements Hotel{

    private Hotel hotel;

    public Elong() {
        hotel = new OrangeHotel();
    }

    @Override
    public void hotelBooking(String name) {
        System.out.println(confirm(name));
        hotel.hotelBooking(name);
        System.out.println(callback(name));
    }

    @Override
    public double pay() {
        return useHongbao(hotel.pay());
    }

    private String confirm(String name){
        return "亲爱的"+name+"您预定了橘子酒店，记得入住哦!";
    }

    private String callback(String name){
        return "亲爱的"+name+"您的入住已经结束，有问题请及时反馈！";
    }

    private double useHongbao(double price){
        return price - 50.0d;
    }
}

/**
 * 测试类.
 *
 * @author jialin.li
 * @date 2019-12-27 13:36
 */
public class Main {
    public static void main(String[] args) {
        String xiaozhao = "小赵";
        Elong elong = new Elong();
        elong.hotelBooking(xiaozhao);
        System.out.print("共花费了：");
        System.out.println(elong.pay());
    }
}