let menu = {
    _courses: {
      appetizers: [],
      mains: [],
      desserts: []
    },
  // get currentAppetizers() {
  // },
  // set newAppetizers(appetizerIn) {
  // },
  // get currentMains() {

  // },
  // set newMains(mainsIn) {
  // },
  // get currentDesserts() {

  // },
  // set newDesserts(dessertsIn) {
  // },
  // get _courses() {
  // },
  addDishToCourse (courseName, dishName, dishPrice) {
    let upadatedMenu = this._courses;
    const dish = {
      name: dishName,
      price: dishPrice
    };
    return upadatedMenu[courseName].push(dish);
  },
  getRandomDishFromCourse(courseName) {
    const dishes = this._courses[courseName];
    const randomIndex = Math.floor(Math.random()*dishes.length);
    return dishes[randomIndex];
  },

  generateRandomMeal() {
    const appetizer = getRandomDishFromCourse('appetizers');
    const mains = getRandomDishFromCourse('mains');
    const desserts = getRandomDishFromCourse('desserts');
    const totalPrice = appetizer.price + mains.price + desserts.price;

    return `Your meal is ${appetizer.name}, ${mains.name}, {desserts.name}. The price is ${totalPrice}`
  }
}
menu.addDishToCourse('mains', 'schabowy', 12);
menu.addDishToCourse('desserts', 'koktail', 9);
menu.addDishToCourse('appetizers', 'zupa', 6);