Decorator Pattern

DecoratorPattern.js

class FrozenYoghurt {
  constructor(flavor, price) {
    this.flavor = flavor
    this.price = price
  }

  orderPlaced() {
    console.log(`The ${this.flavor} flavor will cost you ${this.price} dollars`);
  }
}

// decorator 1
function addFlavors(froyo) {
  froyo.addStrawberry = true;
  froyo.addVanilla = true;
  froyo.price += 20;
  froyo.updatedInfo = function(){
    console.log(`The updated price after adding flavors is ${froyo.price} dollars`)
  }
  return froyo;
}

// decorator 2
function addToppings(froyo) {
  froyo.hasSprinkles = true;
  froyo.hasBrownie =  true;
  froyo.hasWafers = true;
  froyo.allToppings = function(){
    console.log("Your froyo has sprinkles, brownie, and wafers")
  }
  return froyo;
}

//using decorators
//creating a froyo
const froyo = new FrozenYoghurt("chocolate",10)
froyo.orderPlaced()
//adding flavors
var froyowithFlavors = addFlavors(froyo)
froyowithFlavors.updatedInfo()
//adding toppings
var froyoWithToppings = addToppings(froyo)
froyoWithToppings.allToppings()