rawOOPCoffee.ts

abstract class Beverage {
  protected description: string;

  private ice: boolean; // 얼름
  private mocha: boolean; // 모카
  private whip: boolean; // 휘핑

  getDescription(): string {
    return this.description;
  }

  protected setIce() {
    this.ice = true;
  }

  protected hasIce() {
    return this.ice;
  }

  protected setMocha() {
    this.mocha = true;
  }

  protected hasMocha() {
    return this.mocha;
  }

  protected setWhip() {
    this.whip = true;
  }

  protected hasWhip() {
    return this.whip;
  }

  abstract cost(): number;
}

class Americano extends Beverage {
  constructor() {
    super();
    this.description = "아메리카노~";
  }

  cost() {
    let baseCost = 4000;
    if (this.hasIce()) baseCost += 500;
    if (this.hasMocha()) baseCost += 1000;
    if (this.hasWhip()) baseCost += 300;
    return baseCost;
  }
}