<?php
/**
 * Created by PhpStorm.
 * User: insei
 * Date: 2019/1/27
 * Time: 7:44 PM
 */

// 职责链模式（又叫做责任链模式） 包含了一些命令对象和一些处理对象，每个处理对象决定它能
// 出来那些对象，它也知道把自己不能处理的命令交给下一个处理对象，该模式还描述了往该链添加
// 新的处理对象方法。

class Request
{
    public $num;

    public $requestType;

    public $requestContent;
}

abstract class Manager
{
    protected $name;

    protected $manager;

    public function __construct($name)
    {
        $this->name = $name;
    }

    public function setHeader(Manager $_mana)
    {
        $this->manager = $_mana;
    }

    abstract public function Apply(Request $_req)
}

// 经理
class CommonManager extends Manager
{
    public function __construct($name)
    {
        parent::__construct($name);
    }

    public function Apply(Request $_req)
    {
        if ($_req->requestType == "请假" && $_req->num<=2) {
            echo "{$this->name}:{$_req->requestContent} 数量{$_req->num}被批准。<br/>";
        } else {
            if (isset($this->manager)) {
                $this->Apply($_req);
            }
        }
    }
}

//总监
class MajorDomo extends Manager
{
    public function __construct($_name)
    {
        parent::__construct($_name);
    }

    public function Apply(Request $_req)
    {
        if ($_req->requestType == "请假" && $_req->num <= 5)
        {
            echo "{$this->name}:{$_req->requestContent} 数量{$_req->num}被批准。<br/>";
        }
        else
        {
            if (isset($this->manager))
            {
                $this->manager->Apply($_req);
            }
        }

    }
}


//总经理
class GeneralManager extends Manager
{
    public function __construct($_name)
    {
        parent::__construct($_name);
    }

    public function Apply(Request $_req)
    {
        if ($_req->requestType == "请假")
        {
            echo "{$this->name}:{$_req->requestContent} 数量{$_req->num}被批准。<br/>";
        }
        else if($_req->requestType=="加薪" && $_req->num <= 500)
        {
            echo "{$this->name}:{$_req->requestContent} 数量{$_req->num}被批准。<br/>";
        }
        else if($_req->requestType=="加薪" && $_req->num>500)
        {
            echo "{$this->name}:{$_req->requestContent} 数量{$_req->num}再说吧。<br/>";
        }
    }
}


//--------------------职责链模式----------------------

$jingli = new CommonManager("李经理");
$zongjian = new MajorDomo("郭总监");
$zongjingli = new GeneralManager("孙总");

//设置直接上级
$jingli->SetHeader($zongjian);
$zongjian->SetHeader($zongjingli);

//申请
$req1 = new Request();
$req1->requestType = "请假";
$req1->requestContent = "小菜请假！";
$req1->num = 1;
$jingli->Apply($req1);

$req2 = new Request();
$req2->requestType = "请假";
$req2->requestContent = "小菜请假！";
$req2->num = 4;
$jingli->Apply($req2);

$req3 = new Request();
$req3->requestType = "加薪";
$req3->requestContent = "小菜请求加薪！";
$req3->num = 500;
$jingli->Apply($req3);

$req4 = new Request();
$req4->requestType = "加薪";
$req4->requestContent = "小菜请求加薪！";
$req4->num = 1000;
$jingli->Apply($req4);