/*

* @Author: junchao

* @Date: 2021-01-05 12:09:54

* @LastEditTime: 2021-01-07 15:05:58

* @LastEditors: junchao

* @Description:

* @FilePath: /JavaScriptDesignPatterns/command/with_command.js

* @可以输入预定的版权声明、个性签名、空行等

*/

// 烧烤店的实现

// Receiver 接收者类 厨师，拥有烤羊肉串，烤鸡翅等能力

class Cooker {

execute(action) {

console.log(`厨房收到订单: 开始${action}`)

switch (action) {

case "烤羊肉串":

this.bakeMutton();

break;

case "烤鸡翅":

this.bakeChickenWing();

break;

default:

console.log(`厨房没有${action}了，请点其他的菜`);

break;

}

}

// 烤羊肉串

bakeMutton() {

setTimeout(() => {

console.log('羊肉串烤好了，可以给客人上菜了');

}, 500);

}

// 烤鸡翅

bakeChickenWing() {

setTimeout(() => {

console.log('鸡翅烤好了，可以给客人上菜了');

}, 1000);

}

}

// command 命令对象类

class Command {

constructor(receiver) {

this.receiver = receiver;

}

execute(action) {

this.receiver.execute(action);

}

}

// ConcreteCommand

// 烤羊肉串的命令

class BakeMuttonCommand extends Command {

constructor(receiver) {

super(receiver);

}

execute() {

this.receiver.execute('烤羊肉串');

}

}

// 烤牛肉串的命令

class BakeBeefCommand extends Command {

constructor(receiver) {

super(receiver);

}

execute() {

this.receiver.execute('烤牛肉串');

}

}

// 烤鸡翅的命令

class BakeChickenWingCommand extends Command {

constructor(receiver) {

super(receiver);

}

execute() {

this.receiver.execute('烤鸡翅');

}

}

// Invoker 发布者 服务员

class Invoker {

constructor() {

this.orders = [];

}

// 添加菜品

setOrder(type, command) {

this.orders.push(command);

console.log(`${Date.now()} 下单 ${type}`);

}

// 取消菜品

cancelOrder(type, command) {

let index = this.orders.indexOf(command);

this.orders.splice(index, 1);

console.log(`${Date.now()} 取消下单 ${type}`)

}

// 向后厨下单

notify() {

console.log('向后厨下单');

this.orders.forEach(element => {

element.execute();

});

}

}

let cooker = new Cooker();

let bakeMuttonCommand = new BakeMuttonCommand(cooker);

let bakeBeefCommand = new BakeBeefCommand(cooker);

let bakeChickenWingCommand = new BakeChickenWingCommand(cooker);

let waiter = new Invoker();

waiter.setOrder('烤羊肉串', bakeMuttonCommand);

waiter.setOrder('烤羊肉串', bakeMuttonCommand);

waiter.setOrder('烤牛肉串', bakeBeefCommand);

waiter.setOrder('烤鸡翅', bakeChickenWingCommand);

waiter.cancelOrder('烤羊肉串', bakeMuttonCommand);

// setTimeout(() => {

waiter.notify();

// }, 1000);