IFE第四十四天到第四十六天：开一家餐厅吧（二）（单例模式）

电玩女神 2022-05-14 05:16 180阅读 0赞

<!DOCTYPE html>
    <html>
    
    <head>
        <meta charset="UTF-8">
        <title>IFE ECMAScript</title>
    </head>
    
    <body>
    
        <script>
            var id = 0;
    
            function generateID() {
                return ++id;
            }
    
            function Restaurant(attr) {
                this.cash = attr.cash;
                this.seats = attr.seats;
                this.staff = attr.staff;
            }
    
            Restaurant.prototype.hire = function (staff) {
                this.staff.push(staff);
            }
    
            Restaurant.prototype.fire = function (staff) {
                this.staff = this.staff.filter(function (el) {
                    return el !== staff;
                });
            }
    
            function Staff(name, salary) {
                this.id = generateID();
                this.name = name;
                this.salary = salary;
            }
    
            Staff.prototype.work = function () {
    
            }
    
            var singletonWaiter = (function () {
                var waiter = null;
    
                function Waiter(name, salary) {
                    Staff.call(this, name, salary);
                }
                Waiter.prototype = {
                    construstor: Waiter,
                    notifyCook: function (task) {
                        if (typeof task == "object") {
                            console.log("服务员：厨师，做一份" + task.name);
                            let _ck = singletonCook.getCook("李大厨", 10000);
                            _ck.cookDish(task.name);
                            _ck = null;
                        }
                    },
                    serveDish: function (dishes) {
                        console.log(`服务员：${dishes.dishname}来了！`);
                    },
                }
                return {
                    getWaiter: function (name, salary) {
                        if (waiter === null) {
                            waiter = new Waiter(name, salary);
                        }
                        return waiter;
                    }
                }
            })();
    
            var singletonCook = (function () {
                var cook = null;
    
                function Cook(name, salary) {
                    Staff.call(this, name, salary);
                }
                Cook.prototype = {
                    construstor: Cook,
                    cookDish: function (dishes) {
                        console.log(`厨师：${dishes}做好了！`);
                    },
                    notifyWaiter: function (dishes) {
                        console.log("可以上菜了！");
                        let _wt = singletonWaiter.getWaiter("王小二", 3500);
                        _wt.serveDish(dishes);
                        _wt = null;
                    },
                }
                return {
                    getCook: function (name, salary) {
                        if (cook === null) {
                            cook = new Cook(name, salary);
                        }
                        return cook;
                    }
                }
            })();
    
            function Customer(name) {
                this.name = name;
                this.order = function (dishes) {
                    console.log(name + "点的菜是" + dishes.dishname);
                    singletonWaiter.getWaiter("王小二", 3500).serveDish(dishes);
                }
                this.eat = function () {
                    console.log("顾客：开始吃菜，吃完离开！");
                }
            }
    
            function Dish(dishname, cost, price) {
                this.dishname = dishname;
                this.cost = cost;
                this.price = price;
            }
    
            function getMenu(dishes) {
                let menu = new Array();
                for (let i = 0; i < dishes.length; i++) {
                    let obj = {};
                    obj.dishname = dishes[i].dishname;
                    obj.price = dishes[i].price;
                    menu.push(obj);
                }
                return menu;
            }
    
            //test
            var ifeRestaurant = new Restaurant({
                cash: 1000000,
                seats: 1,
                staff: [],
            });
    
            var newCook = singletonCook.getCook("李大厨", 10000);
            var newWaiter = singletonWaiter.getWaiter("王小二", 3500);
            ifeRestaurant.hire(newCook);
            ifeRestaurant.hire(newWaiter);
    
            var customerQueue = ['赵先生', '钱女士', '孙大姐', '李大哥'];
            var ifedishes = [
                new Dish("麻辣小龙虾", 30, 88),
                new Dish("酸辣土豆丝", 8, 18),
                new Dish("肉末茄子", 12, 28),
                new Dish("水煮肉片", 30, 58),
            ];
            var menu = getMenu(ifedishes);
            console.log(menu);
    
            for (let i = 0, len = customerQueue.length; i < len; i++) {
                let cus = new Customer(customerQueue.shift());
                let j = Math.floor(Math.random() * menu.length);
                cus.order(menu[j]);
                cus.eat();
                console.log("------------------------------");
                if (!customerQueue.length) {
                    console.log("服务员：没有顾客了，可以休息下了！");
                }
            }
        </script>
    </body>
    
    </html>