异步编程－排队上厕所

最近公司人多厕所少，写个代码描述下场景，有点恶心，见谅哈哈

//排队上厕所，有点恶心的场景描述，哈哈
//状态 0：在排队 1:处理中 2 上完 3 取消
const WashRoomMap={};
//厕所
class WashRoom {
    constructor(name){
        this.name=name||'test';
        if(!WashRoomMap[name]){
            WashRoomMap[name]={
                bit:[],
                curN:0,
                orderMap:{}//待处理的订单
            };
        }
        this.shopOrder=WashRoomMap[this.name];
        this.resData={flag:'S'}

        this.getN();
    }
    //获取排队人数
    getN(){
        //给你一个单号
        this.myN=this.shopOrder.bit.length;
        this.shopOrder.bit[this.myN]='0';
        this.shopOrder.orderMap[this.myN]=this;
    }
    //排队
    wait(overTime){
        const n=this.myN-this.shopOrder.curN;
        if(n<0){
            return {flag:'F'}
        }
        if(n>0){
            return new Promise((res)=> {
                this.res=res;
                if(overTime){
                    //超时取消
                    this.timeInter=setTimeout(()=>{
                        if(this.res){
                            this.shopOrder.bit[this.myN]='3';
                            this.res({
                                flag:'F',
                                code:'overtime',
                                msg:'超时'+overTime+'ms取消订单',
                            })
                            this.timeInter=null;
                            this.res=null;
                        }
                    },overTime)
                }
            })

        }else if(n===0){
            return this.resData;
        }

    }
    //下一个订单
    next(){
        if(this.myN===this.shopOrder.curN){
            this.shopOrder.curN++
            if(this.shopOrder.curN<this.shopOrder.bit.length){
                this.shopOrder.orderMap[this.shopOrder.curN].resolve();
                delete this.shopOrder.orderMap[this.shopOrder.curN];
            }
        }
    }
    //等待完成
    resolve(){
        if(this.shopOrder.bit[this.myN]==='0'){
            this.shopOrder.bit[this.myN]='1';
            if(this.timeInter){
                clearTimeout(this.timeInter);
                this.timeInter=null;
            }
            if(this.res){
                this.res(this.resData)
                this.res=null;
            }
            delete this.shopOrder.orderMap[this.myN];
        }else if(this.shopOrder.bit[this.myN]!=='1'){
            this.next();
        }

    }
    //结束订单
    end(){
        if(this.myN>=this.shopOrder.curN){
            this.shopOrder.bit[this.myN]='2';
            this.next()
        }
    }

}

module.exports=WashRoom;

输出：

"C:Program Files odejs ode.exe" D:360jr360jr-wlhkoa-appsrcwashRoom.js
0 '排队'
1 '排队'
2 '排队'
3 '排队'
4 '排队'
5 '排队'
0 '排队完成'
0 '开始上厕所'
0 '拉屎'
0 '洗手'
0 '结束'
1 '排队完成'
1 '开始上厕所'
1 '拉屎'
1 '洗手'
3 '超时，等不下去了'
4 '超时，等不下去了'
1 '结束'
2 '排队完成'
2 '开始上厕所'
2 '拉屎'
2 '洗手'
2 '结束'
5 '排队完成'
5 '开始上厕所'
5 '拉屎'
5 '洗手'
5 '结束'

Process finished with exit code 0