//计算器处理：将Request对象处理为Response对象

#pragma once
#include <iostream>
#include "CustomProtocol.hpp"//提供自定义协议

class Calculator
{
public:
    std::shared_ptr<Response> Calculate(std::shared_ptr<Request> req)
    {
        //std::shared_ptr<Response> res;//返回值
        std::shared_ptr<Response> res = Factory::BuildResponse();  // 初始化智能指针
        int x=req->GetX();
        int y=req->GetY();
        char op=req->Getoperator();
        switch(op)
        {
            case '+':
            res->SetResult(x+y);
            res->SetCode(0);
            res->SetDescribe("success");
            break;
            case '-':
            res->SetResult(x-y);
            res->SetCode(0);
            res->SetDescribe("success");
            break;
            case '*':
            res->SetResult(x*y);
            res->SetCode(0);
            res->SetDescribe("success");
            break;
            case '/':
            if(y!=0)
            {
                res->SetResult(x/y);
                res->SetCode(0);
                res->SetDescribe("success");
            }
            else
            {
                res->SetCode(1);//除0操作
                res->SetDescribe("div 0");
            }
            break;
            default:
            res->SetCode(2);//非法操作
            res->SetDescribe("illegal operator");
        }

        return res;
    }
};