restaurant

class Restaurant {
    constructor(budget) {
        this.budgetMoney = budget;
        this.menu = {}; //{mealName: {products: [{prod: qty},.. ], price:num},..'}
        this.stockProducts = {}; // {productName: qty, ..}
        this.history = [];
    }
    get budget() {
        return this.budgetMoney;
    }
    loadProducts(products) {
        let currentHistory = [];
        for (let line of products) {
            let [productName, productQuantity, productTotalPrice] =
                line.split(' ');
            productQuantity = Number(productQuantity);
            productTotalPrice = Number(productTotalPrice);
            if (this.budgetMoney < productTotalPrice) {
                this.history.push(
                    `There was not enough money to load ${productQuantity} ${productName}`
                );
                currentHistory.push(
                    `There was not enough money to load ${productQuantity} ${productName}`
                );
                continue;
            }
            if (this.stockProducts[productName] === undefined) {
                this.stockProducts[productName] = 0;
            }
            this.stockProducts[productName] += productQuantity;
            this.budgetMoney -= productTotalPrice;
            this.history.push(
                `Successfully loaded ${productQuantity} ${productName}`
            );
            currentHistory.push(
                `Successfully loaded ${productQuantity} ${productName}`
            );
        }
        return currentHistory.join('\n');
    }
    addToMenu(meal, neededProducts, price) {
        if (this.menu[meal] !== undefined) {
            return `The ${meal} is already in the our menu, try something different.`;
        }
        this.menu[meal] = {};
        this.menu[meal].price = price;
        this.menu[meal].products = [];
        for (let line of neededProducts) {
            let [productName, productQuantity] = line.split(' ');
            let currProdObj = {};
            currProdObj[productName] = Number(productQuantity);
            this.menu[meal].products.push(currProdObj);
        }
        if (Object.keys(this.menu).length === 1) {
            return `Great idea! Now with the ${meal} we have 1 meal in the menu, other ideas?`;
        }
        return `Great idea! Now with the ${meal} we have ${
            Object.keys(this.menu).length
        } meals in the menu, other ideas?`;
    }
    showTheMenu() {
        if (Object.keys(this.menu).length === 0) {
            return 'Our menu is not ready yet, please come later...';
        }
        //{meal} - $ {meal price}
        let result = [];
        Object.keys(this.menu).forEach((meal) =>
            result.push(`${meal} - $ ${this.menu[meal].price}`)
        );
        return result.join('\n');
    }
    makeTheOrder(meal) {
        if (this.menu[meal] === undefined) {
            return `There is not ${meal} yet in our menu, do you want to order something else?`;
        }
        let availableProductsNames = Object.keys(this.stockProducts);
        let neededProducts = this.menu[meal].products;
        if (
            !neededProducts.every(
                (o) =>
                    availableProductsNames.includes(Object.keys(o)[0]) &&
                    this.stockProducts[Object.keys(o)[0]] >= Object.values(o)[0]
            )
        ) {
            return `For the time being, we cannot complete your order (${meal}), we are very sorry...`;
        }
        neededProducts.forEach((o) => {
            let [currProd, currQty] = Object.entries(o)[0];
            this.stockProducts[currProd] -= currQty;
        });
        this.budgetMoney += this.menu[meal].price;
        return `Your order (${meal}) will be completed in the next 30 minutes and will cost you ${this.menu[meal].price}.`;
    }
}