//
// Created by andrew on 2020年11月28日.
//
#include <iostream>

using namespace std;

// Caretaker 管理者
// Memento 备忘录

class Memento{
public:
 Memento(string name, int age){
 m_name = name;
 m_age = age;
 }
 string getName(){
 return m_name;
 }
 int getAge() const{
 return m_age;
 }
 void setName(string name){
 this->m_name = name;
 }
 void setAge(int age){
 this->m_age = age;
 }

private:
 string m_name;
 int m_age;
};

class Person{
public:
 Person(string name, int age){
 m_name = name;
 m_age = age;
 }
 string getName(){
 return m_name;
 }
 int getAge() const{
 return m_age;
 }
 void setName(string name){
 this->m_name = name;
 }
 void setAge(int age){
 m_age = age;
 }
 // 保存,将需要的信息记录到Memento中
// 原生者 创建一个备忘录,用于保存信息
 Memento *createMemento()
 {
 return new Memento(m_name, m_age);
 }
 //还原
 void setMemento(Memento *memento)
 {
 this->m_name = memento->getName();

 this->m_age = memento->getAge();
 }

 void printT(){
 cout << "m_name:" << m_name << "m_age:" << m_age << endl;
 }

private:
 string m_name;
 int m_age;
};

class Caretaker{
public:
 explicit Caretaker(Memento * memento){
 this->memento = memento;
 }
 Memento *getMemento(){
 return memento;
 }

 void setMemento(Memento *memento){
 this->memento = memento;
 }

private:
 Memento *memento;
};


int main(int argc, char* argv[]){

 Caretaker *caretaker = nullptr;
 auto *p = new Person("bob", 32);
 p->printT();

 cout << "----------------------" << endl;
 caretaker = new Caretaker(p->createMemento());
 p->setAge(42);
 p->printT();

 cout << "ro back" << endl;
 p->setMemento(caretaker->getMemento());
 p->printT();

 cout << "memento pattern" << endl;
}