Logic bux fix on massari cart

const JSON_CATEGORIES = "./data/categories.json";
const JSON_MENU = "./data/menu.json";

class Cart {
  constructor() {
    this.items = [];
    this.subtotal = 0;
  }
  getAdditionsCost(additions) {
    return additions
      .map((addition) => {
        var _a;
        return (
          addition.price *
          ((_a = addition.amount) !== null && _a !== void 0 ? _a : 1)
        );
      })
      .reduce((accumulator, current) => accumulator + current);
  }
  addToCart(item) {
    /// Adds item and it's price
    const currentItemsAmount = this.items.length;
    if (this.items.push(item) === currentItemsAmount + 1) {
      this.subtotal += item.price;
      if (item.additions) {
        this.subtotal += this.getAdditionsCost(item.additions);
      }
      /// Returns true if item has been successfully inserted
      return true;
    }
    return false;
  }
  removeFromCart(index) {
    /// Retrieves item
    const item = this.items[index];
    /// If item did NOT exist
    if (item === undefined) {
      return false;
    }
    /// Attempts deletion
    if (this.items.splice(index, 1) !== []) {
      /// Scales subtotal
      this.subtotal -= item.price;
      /// Scales additions price
      if (item.additions) {
        this.subtotal -= this.getAdditionsCost(item.additions);
      }
      return true;
    }
    return false;
  }
  checkout(cb) {
    return cb([...this.items], this.subtotal);
  }
}

let njpCart = new Cart();

const DOM = {
  $modal: $("#product-modal"),
  $modalToggler: $('[data-action="open-cart-modal"]'),
  $addToCart: $('[data-action="add-to-cart"]'),
  $updateCart: $('[data-action="update-cart"]'),
  $details: $("#product-modal .panel-details"),
  $name: $("#product-modal .product-modal-name"),
  $ingredients: $("#product-modal .product-modal-ingredients"),
  $price: $("#product-modal .product-modal-price"),
  $sizes: $("#product-modal .panel-details-size"),
  $sizesList: $("#product-modal .product-modal-sizes"),
  $additions: $("#product-modal .panel-details-additions"),
  $additionsList: $("#product-modal .product-modal-additions"),
};

let njpActiveItem = {};
let njpCategories;
let njpMenu;

$.getJSON(JSON_CATEGORIES, (data) => {
  njpCategories = data;
});

$.getJSON(JSON_MENU, (data) => {
  njpMenu = data;
});

DOM.$addToCart.on("click", function () {
  const formattedItem = {
    name: njpActiveItem.name,
    price: njpActiveItem.price,
    additions: njpActiveItem.additions,
  };
  njpCart.addToCart(formattedItem);
});

DOM.$modalToggler.on("click", function () {
  njpActiveItem = getMenuItem($(this).data("id"));
});

const findAdditionsOnDom = () => {
  $(".custom-checkbox")
    .find("input")
    .on("change", function () {
      const additionId = $(this)[0].value;
      if (!njpActiveItem.additions) {
        njpActiveItem.additions = [];
      }
      const additionChosen = getCategoryAddition(
        njpActiveItem.categoryId,
        additionId
      );
      njpActiveItem.additions.push(additionChosen);
    });
};

$("#product-modal")
  .find(".modal-content")
  .mouseenter(function () {
    findAdditionsOnDom();
  });

const getMenuItem = (id) => {
  return njpMenu[id - 1];
};

const getCategory = (id) => {
  return njpCategories[id - 1];
};

getCategoryAddition = (categoryId, additionId) => {
  return getCategory(categoryId)?.additions[additionId - 1];
};


const JSON_CATEGORIES = "./data/categories.json";
const JSON_MENU = "./data/menu.json";

class Cart {
  constructor() {
    this.items = [];
    this.subtotal = 0;
  }
  getAdditionsCost(additions) {
    return additions
      .map((addition) => {
        var _a;
        return (
          addition.price *
          ((_a = addition.amount) !== null && _a !== void 0 ? _a : 1)
        );
      })
      .reduce((accumulator, current) => accumulator + current);
  }
  addToCart(item) {
    /// Adds item and it's price
    const currentItemsAmount = this.items.length;
    if (this.items.push(item) === currentItemsAmount + 1) {
      this.subtotal += item.price;
      if (item.additions) {
        this.subtotal += this.getAdditionsCost(item.additions);
      }
      /// Returns true if item has been successfully inserted
      return true;
    }
    return false;
  }
  removeFromCart(index) {
    /// Retrieves item
    const item = this.items[index];
    /// If item did NOT exist
    if (item === undefined) {
      return false;
    }
    /// Attempts deletion
    if (this.items.splice(index, 1) !== []) {
      /// Scales subtotal
      this.subtotal -= item.price;
      /// Scales additions price
      if (item.additions) {
        this.subtotal -= this.getAdditionsCost(item.additions);
      }
      return true;
    }
    return false;
  }
  checkout(cb) {
    return cb([...this.items], this.subtotal);
  }
}

let njpCart = new Cart();

const DOM = {
  $modal: $("#product-modal"),
  $modalToggler: $('[data-action="open-cart-modal"]'),
  $addToCart: $('[data-action="add-to-cart"]'),
  $updateCart: $('[data-action="update-cart"]'),
  $details: $("#product-modal .panel-details"),
  $name: $("#product-modal .product-modal-name"),
  $ingredients: $("#product-modal .product-modal-ingredients"),
  $price: $("#product-modal .product-modal-price"),
  $sizes: $("#product-modal .panel-details-size"),
  $sizesList: $("#product-modal .product-modal-sizes"),
  $additions: $("#product-modal .panel-details-additions"),
  $additionsList: $("#product-modal .product-modal-additions"),
  $deleteItemFromCart: $('[data-action="remove-from-cart"]'),
};

let njpActiveItem = {};
let njpCategories;
let njpMenu;

$.getJSON(JSON_CATEGORIES, (data) => {
  njpCategories = data;
});

$.getJSON(JSON_MENU, (data) => {
  njpMenu = data;
});

DOM.$addToCart.on("click", function () {
  const formattedItem = {
    name: njpActiveItem.name,
    price: njpActiveItem.price,
    additions: njpActiveItem.additions,
  };
  njpCart.addToCart(formattedItem);
});

DOM.$modalToggler.on("click", function () {
  njpActiveItem = getMenuItem($(this).data("id"));
});

$(DOM.$deleteItemFromCart).on('click').on("click", function () {
  console.log("paparezza");
  console.log($(this).data("id"));
  njpActiveItem = getMenuItem($(this).data("id"));
});

const findAdditionsOnDom = () => {
  $(".custom-checkbox")
    .find("input")
    .on("change", function () {
      const additionId = $(this)[0].value;
      if (!njpActiveItem.additions) {
        njpActiveItem.additions = [];
      }
      const additionChosen = getCategoryAddition(
        njpActiveItem.categoryId,
        additionId
      );
      njpActiveItem.additions.push(additionChosen);
    });
};

$("#product-modal")
  .find(".modal-content")
  .mouseenter(function () {
    findAdditionsOnDom();
  });

  //panel-cart

const getMenuItem = (id) => {
  return njpMenu[id - 1];
};

const getCategory = (id) => {
  return njpCategories[id - 1];
};

getCategoryAddition = (categoryId, additionId) => {
  return getCategory(categoryId)?.additions[additionId - 1];
};