const menu = {
  _courses : {
    appetizers : [],
    mains : [],
    desserts : [],
},
  get appetizers(){
    return this._courses.appetizers;
  },
  get mains(){
    return this._courses.mains;
  },
  get desserts(){
    return this._courses.desserts;
  },
  set appetizers(appetizers){
    return this._courses.appetizers = appetizers;
  },
  set mains(mains){
    return this._courses.mains = mains;
  },
  set desserts(desserts){
    return this._courses.desserts = desserts;
  },
  get courses(){
    return {
      appetizers : this.appetizers,
      mains : this.mains,
      desserts : this.desserts,
    };
  },
  addDishToCourse(courseName, dishName, dishPrice){
    const dish = {
      name : dishName,
      price : dishPrice,
    };
  return this._courses[courseName].push(dish);
  },
  getRandomDishFromCourse(courseName){
    const dishes = this._courses[courseName]
    const randomIndex = math.floor(math.random() * dishes.length)
    return dishes[randomIndex];
  },
  generateRandomMeal(){
    const appetizer = this._courses.appetizers('appetizer'),
    const main = this._courses.mains('main'),
    const dessert = this._courses.desserts('dessert'),
    const totalPrice = appetizer.price + main.price + dessert.price;
  },
};

menu.addDishToCourse('appetizers', 'salad', 4.00);
menu.addDishToCourse('appetizers', 'wings', 4.50);
menu.addDishToCourse('appetizers', 'toast', 5.00);

menu.addDishToCourse('mains', 'steak', 10.50);
menu.addDishToCourse('mains', 'salmon', 14.25);
menu.addDishToCourse('mains', 'turkey', 12.85);

menu.addDishToCourse('desserts', 'ice cream', 3.00);
menu.addDishToCourse('desserts', 'coffee', 3.00);
menu.addDishToCourse('desserts', 'cake', 5.00);

const meal = menu.generateRandomMeal();
console.log(meal);