Restaurant Manager 100/100 with validation

function processRestaurantManagerCommands(commands) {
    'use strict';

    Object.prototype.extends = function (parent) {
        this.prototype = Object.create(parent.prototype);
        this.prototype.constructor = this;
    }

    Object.prototype.validateNonEmptyString = function (value, variableName) {
        if (typeof (value) != 'string' || !value) {
            throw new Error(variableName + " should be non-empty string!");
        }
    }

    Object.prototype.validatePositiveNumber = function (value, variableName) {
        if (value < 0) {
            throw new Error(variableName + " should be positive!");
        }
    }

    var RestaurantEngine = (function () {
        var _restaurants, _recipes;

        function initialize() {
            _restaurants = [];
            _recipes = [];
        }

        // ---------- Restaurant ----------
        var Restaurant = (function () {
            function Restaurant(name, location) {
                this.setName(name);
                this.setLocation(location);
                this._recipes = [];
            }

            Restaurant.prototype.getName = function () {
                return this._name;
            }

            Restaurant.prototype.setName = function (name) {
                this.validateNonEmptyString(name, "name");
                this._name = name;
            }

            Restaurant.prototype.getLocation = function () {
                return this._location;
            }

            Restaurant.prototype.setLocation = function (location) {
                this.validateNonEmptyString(location, "location");
                this._location = location;
            }

            Restaurant.prototype.addRecipe = function (recipe) {
                this._recipes.push(recipe);
            }

            Restaurant.prototype.removeRecipe = function (recipe) {
                var index = this._recipes.indexOf(recipe);
                this._recipes.splice(index, 1);
            }

            Restaurant.prototype.printRestaurantMenu = function () {
                var nameString = "***** " + this.getName() + " - " + this.getLocation() + " *****\n";
                var result = nameString;

                if (this._recipes.length === 0) {
                    var noRecipesString = "No recipes... yet\n";
                    return nameString + noRecipesString;
                }

                // ----- drinks -----
                var drinks = this._recipes.filter(function (recipe) {
                    return recipe instanceof Drink;
                });
                drinks.sort(function (a, b) {
                    return a.getName().localeCompare(b.getName());
                });

                // ----- salads -----
                var salads = this._recipes.filter(function (recipe) {
                    return recipe instanceof Salad;
                });
                salads.sort(function (a, b) {
                    return a.getName().localeCompare(b.getName());
                });

                // ----- mainCourses -----
                var mainCourses = this._recipes.filter(function (recipe) {
                    return recipe instanceof MainCourse;
                });
                mainCourses.sort(function (a, b) {
                    return a.getName().localeCompare(b.getName());
                });

                // ----- desserts -----
                var desserts = this._recipes.filter(function (recipe) {
                    return recipe instanceof Dessert;
                });
                desserts.sort(function (a, b) {
                    return a.getName().localeCompare(b.getName());
                });

                if (drinks.length > 0) {
                    var drinksString = "~~~~~ DRINKS ~~~~~\n";
                    result += drinksString;

                    drinks.forEach(function (drink) {
                        result += drink.toString();
                    });
                }

                if (salads.length > 0) {
                    var saladsString = "~~~~~ SALADS ~~~~~\n";
                    result += saladsString;

                    salads.forEach(function (salad) {
                        result += salad.toString();
                    });
                }

                if (mainCourses.length > 0) {
                    var mainCoursesString = "~~~~~ MAIN COURSES ~~~~~\n";
                    result += mainCoursesString;

                    mainCourses.forEach(function (mainCourse) {
                        result += mainCourse.toString();
                    });
                }

                if (desserts.length > 0) {
                    var dessertsString = "~~~~~ DESSERTS ~~~~~\n";
                    result += dessertsString;

                    desserts.forEach(function (dessert) {
                        result += dessert.toString();
                    });
                }

                return result;
            }

            return Restaurant;
        }());

        // ---------- Recipe ----------
        var Recipe = (function () {
            function Recipe(name, price, calories, quantity, timeToPrepare) {

                if (this.constructor === Recipe) {
                    throw new Error("Can't instantiate abstract class Recipe!");
                }

                this.setName(name);
                this.setPrice(price);
                this.setCalories(calories);
                this.setQuantity(quantity);
                this.setTimeToPrepare(timeToPrepare);
            }

            Recipe.prototype.getName = function () {
                return this._name;
            };

            Recipe.prototype.setName = function (name) {
                this.validateNonEmptyString(name, "name");
                this._name = name;
            };

            Recipe.prototype.getPrice = function () {
                return this._price;
            };

            Recipe.prototype.setPrice = function (price) {
                this.validatePositiveNumber(price, "price");
                this._price = price;
            };

            Recipe.prototype.getCalories = function () {
                return this._calories;
            };

            Recipe.prototype.setCalories = function (calories) {
                this.validatePositiveNumber(calories, "calories");
                if (this.constructor === Drink) {
                    if (calories > 100) {
                        throw new Error("The calories must not be greater than 100");
                    }
                }

                this._calories = calories;
            };

            Recipe.prototype.getQuantity = function () {
                return this._quantity;
            };

            Recipe.prototype.setQuantity = function (quantity) {
                this.validatePositiveNumber(quantity, "quantity");
                this._quantity = quantity;
            };

            Recipe.prototype.getTimeToPrepare = function () {
                return this._timeToPrepare;
            };

            Recipe.prototype.setTimeToPrepare = function (timeToPrepare) {
                this.validatePositiveNumber(timeToPrepare, "timeToPrepare");
                if (this.constructor === Drink) {
                    if (timeToPrepare > 20) {
                        throw new Error("The time to prepare must not be greater than 20 minutes");
                    }
                }

                this._timeToPrepare = timeToPrepare;
            };

            Recipe.prototype.toString = function () {
                var unit;
                if (this instanceof Drink) {
                    unit = "ml";
                } else if (this instanceof Meal) {
                    unit = "g";
                }

                return "==  " + this.getName() + " == $" + this.getPrice().toFixed(2) + "\n" +
                       "Per serving: " + this.getQuantity() + " " + unit + ", " + this.getCalories() + " kcal" + "\n" +
                       "Ready in " + this.getTimeToPrepare() + " minutes";
            }

            return Recipe;
        }());

        // ---------- Drink ----------
        var Drink = (function () {

            function Drink(name, price, calories, quantity, timeToPrepare, isCarbonated) {
                Recipe.call(this, name, price, calories, quantity, timeToPrepare);
                this.setIsCarbonated(isCarbonated);
            }

            Drink.extends(Recipe);

            Drink.prototype.getIsCarbonated = function () {
                return this._isCarbonated;
            }

            Drink.prototype.setIsCarbonated = function (isCarbonated) {
                // TODO: ADD VALIDATION
                this._isCarbonated = isCarbonated;
            }

            Drink.prototype.toString = function () {
                var carbonated = this.getIsCarbonated() ? "yes" : "no";

                return Recipe.prototype.toString.call(this) + "\n" +
                    "Carbonated: " + carbonated + "\n";
            }

            return Drink;
        }());

        // ---------- Meal ----------
        var Meal = (function () {

            function Meal(name, price, calories, quantity, timeToPrepare, isVegan) {

                if (this.constructor === Meal) {
                    throw new Error("Can't instantiate abstract class Meal!");
                }

                Recipe.call(this, name, price, calories, quantity, timeToPrepare);
                this.setIsVegan(isVegan);
            }

            Meal.extends(Recipe);

            Meal.prototype.getIsVegan = function () {
                return this._isVegan;
            }

            Meal.prototype.setIsVegan = function (isVegan) {
                // TODO: ADD VALIDATION
                this._isVegan = isVegan;
            }

            Meal.prototype.toggleVegan = function () {
                this._isVegan = !this._isVegan;
            }

            Meal.prototype.toString = function () {
                var vegan = this.getIsVegan() ? "[VEGAN] " : "";

                return vegan + Recipe.prototype.toString.call(this);
            }

            return Meal;
        }());

        // ---------- Dessert ----------
        var Dessert = (function () {

            function Dessert(name, price, calories, quantity, timeToPrepare, isVegan) {
                Meal.call(this, name, price, calories, quantity, timeToPrepare, isVegan);
                this._withSugar = true;
            }

            Dessert.extends(Meal);

            Dessert.prototype.toggleSugar = function () {
                this._withSugar = !this._withSugar;
            }

            Dessert.prototype.toString = function () {
                var sugar = this._withSugar ? "" : "[NO SUGAR] ";

                return sugar + Meal.prototype.toString.call(this) + "\n";
            }

            return Dessert;
        }());

        // ---------- MainCourse ----------
        var MainCourse = (function () {

            function MainCourse(name, price, calories, quantity, timeToPrepare, isVegan, type) {
                Meal.call(this, name, price, calories, quantity, timeToPrepare, isVegan);
                this.setType(type);
            }

            MainCourse.extends(Meal);

            MainCourse.prototype.getType = function () {
                return this._type;
            }

            MainCourse.prototype.setType = function (type) {
                // TODO: ADD VALIDATION
                this._type = type;
            }

            MainCourse.prototype.toString = function () {
                return Meal.prototype.toString.call(this) + "\n" +
                       "Type: " + this.getType() + "\n";
            }

            return MainCourse;
        }());

        // ---------- Salad ----------
        var Salad = (function () {

            function Salad(name, price, calories, quantity, timeToPrepare, containsPasta) {
                Meal.call(this, name, price, calories, quantity, timeToPrepare, true);
                this.setContainsPasta(containsPasta);
            }

            Salad.extends(Meal);

            Salad.prototype.getContainsPasta = function () {
                return this._containsPasta;
            }

            Salad.prototype.setContainsPasta = function (containsPasta) {
                this._containsPasta = containsPasta;
            }

            Salad.prototype.toString = function () {
                var isContainsPasta = this.getContainsPasta() ? "yes" : "no";

                return Meal.prototype.toString.call(this) + "\n" +
                    "Contains pasta: " + isContainsPasta + "\n";
            }

            return Salad;
        }());

        var Command = (function () {

            function Command(commandLine) {
                this._params = new Array();
                this.translateCommand(commandLine);
            }

            Command.prototype.translateCommand = function (commandLine) {
                var self, paramsBeginning, name, parametersKeysAndValues;
                self = this;
                paramsBeginning = commandLine.indexOf("(");

                this._name = commandLine.substring(0, paramsBeginning);
                name = commandLine.substring(0, paramsBeginning);
                parametersKeysAndValues = commandLine
                    .substring(paramsBeginning + 1, commandLine.length - 1)
                    .split(";")
                    .filter(function (e) { return true });

                parametersKeysAndValues.forEach(function (p) {
                    var split = p
                        .split("=")
                        .filter(function (e) { return true; });
                    self._params[split[0]] = split[1];
                });
            }

            return Command;
        }());

        function createRestaurant(name, location) {
            _restaurants[name] = new Restaurant(name, location);
            return "Restaurant " + name + " created\n";
        }

        function createDrink(name, price, calories, quantity, timeToPrepare, isCarbonated) {
            _recipes[name] = new Drink(name, price, calories, quantity, timeToPrepare, isCarbonated);
            return "Recipe " + name + " created\n";
        }

        function createSalad(name, price, calories, quantity, timeToPrepare, containsPasta) {
            _recipes[name] = new Salad(name, price, calories, quantity, timeToPrepare, containsPasta);
            return "Recipe " + name + " created\n";
        }

        function createMainCourse(name, price, calories, quantity, timeToPrepare, isVegan, type) {
            _recipes[name] = new MainCourse(name, price, calories, quantity, timeToPrepare, isVegan, type);
            return "Recipe " + name + " created\n";
        }

        function createDessert(name, price, calories, quantity, timeToPrepare, isVegan) {
            _recipes[name] = new Dessert(name, price, calories, quantity, timeToPrepare, isVegan);
            return "Recipe " + name + " created\n";
        }

        function toggleSugar(name) {
            var recipe;

            if (!_recipes.hasOwnProperty(name)) {
                throw new Error("The recipe " + name + " does not exist");
            }
            recipe = _recipes[name];

            if (recipe instanceof Dessert) {
                recipe.toggleSugar();
                return "Command ToggleSugar executed successfully. New value: " + recipe._withSugar.toString().toLowerCase() + "\n";
            } else {
                return "The command ToggleSugar is not applicable to recipe " + name + "\n";
            }
        }

        function toggleVegan(name) {
            var recipe;

            if (!_recipes.hasOwnProperty(name)) {
                throw new Error("The recipe " + name + " does not exist");
            }

            recipe = _recipes[name];
            if (recipe instanceof Meal) {
                recipe.toggleVegan();
                return "Command ToggleVegan executed successfully. New value: " +
                    recipe._isVegan.toString().toLowerCase() + "\n";
            } else {
                return "The command ToggleVegan is not applicable to recipe " + name + "\n";
            }
        }

        function printRestaurantMenu(name) {
            var restaurant;

            if (!_restaurants.hasOwnProperty(name)) {
                throw new Error("The restaurant " + name + " does not exist");
            }

            restaurant = _restaurants[name];
            return restaurant.printRestaurantMenu();
        }

        function addRecipeToRestaurant(restaurantName, recipeName) {
            var restaurant, recipe;

            if (!_restaurants.hasOwnProperty(restaurantName)) {
                throw new Error("The restaurant " + restaurantName + " does not exist");
            }
            if (!_recipes.hasOwnProperty(recipeName)) {
                throw new Error("The recipe " + recipeName + " does not exist");
            }

            restaurant = _restaurants[restaurantName];
            recipe = _recipes[recipeName];
            restaurant.addRecipe(recipe);
            return "Recipe " + recipeName + " successfully added to restaurant " + restaurantName + "\n";
        }

        function removeRecipeFromRestaurant(restaurantName, recipeName) {
            var restaurant, recipe;

            if (!_recipes.hasOwnProperty(recipeName)) {
                throw new Error("The recipe " + recipeName + " does not exist");
            }
            if (!_restaurants.hasOwnProperty(restaurantName)) {
                throw new Error("The restaurant " + restaurantName + " does not exist");
            }

            restaurant = _restaurants[restaurantName];
            recipe = _recipes[recipeName];
            restaurant.removeRecipe(recipe);
            return "Recipe " + recipeName + " successfully removed from restaurant " + restaurantName + "\n";
        }

        function executeCommand(commandLine) {
            var cmd, params, result;
            cmd = new Command(commandLine);
            params = cmd._params;

            switch (cmd._name) {
                case 'CreateRestaurant':
                    result = createRestaurant(params["name"], params["location"]);
                    break;
                case 'CreateDrink':
                    result = createDrink(params["name"], parseFloat(params["price"]), parseInt(params["calories"]),
                        parseInt(params["quantity"]), params["time"], parseBoolean(params["carbonated"]));
                    break;
                case 'CreateSalad':
                    result = createSalad(params["name"], parseFloat(params["price"]), parseInt(params["calories"]),
                        parseInt(params["quantity"]), params["time"], parseBoolean(params["pasta"]));
                    break;
                case "CreateMainCourse":
                    result = createMainCourse(params["name"], parseFloat(params["price"]), parseInt(params["calories"]),
                        parseInt(params["quantity"]), params["time"], parseBoolean(params["vegan"]), params["type"]);
                    break;
                case "CreateDessert":
                    result = createDessert(params["name"], parseFloat(params["price"]), parseInt(params["calories"]),
                        parseInt(params["quantity"]), params["time"], parseBoolean(params["vegan"]));
                    break;
                case "ToggleSugar":
                    result = toggleSugar(params["name"]);
                    break;
                case "ToggleVegan":
                    result = toggleVegan(params["name"]);
                    break;
                case "AddRecipeToRestaurant":
                    result = addRecipeToRestaurant(params["restaurant"], params["recipe"]);
                    break;
                case "RemoveRecipeFromRestaurant":
                    result = removeRecipeFromRestaurant(params["restaurant"], params["recipe"]);
                    break;
                case "PrintRestaurantMenu":
                    result = printRestaurantMenu(params["name"]);
                    break;
                default:
                    throw new Error('Invalid command name: ' + cmdName);
            }

            return result;
        }

        function parseBoolean(value) {
            switch (value) {
                case "yes":
                    return true;
                case "no":
                    return false;
                default:
                    throw new Error("Invalid boolean value: " + value);
            }
        }

        return {
            initialize: initialize,
            executeCommand: executeCommand
        };
    }());


    // Process the input commands and return the results
    var results = '';
    RestaurantEngine.initialize();
    commands.forEach(function (cmd) {
        if (cmd != "") {
            try {
                var cmdResult = RestaurantEngine.executeCommand(cmd);
                results += cmdResult;
            } catch (err) {
                results += err.message + "\n";
            }
        }
    });

    return results.trim();
}

// ------------------------------------------------------------
// Read the input from the console as array and process it
// Remove all below code before submitting to the judge system!
// ------------------------------------------------------------

(function() {
    var arr = [];
    if (typeof (require) == 'function') {
        // We are in node.js --> read the console input and process it
        require('readline').createInterface({
            input: process.stdin,
            output: process.stdout
        }).on('line', function(line) {
            arr.push(line);
        }).on('close', function() {
            console.log(processRestaurantManagerCommands(arr));
        });
    }
})();