Healthy Heaven

namespace HealthyHeaven
{
    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Text;

    public class StartUp
    {
        public static void Main()
        {
            // Initialize the repository
            Restaurant restaurant = new Restaurant("Casa Domingo");

            // Initialize the entities
            Vegetable tomato = new Vegetable("Tomato", 20);
            Vegetable cucumber = new Vegetable("Cucumber", 15);

            Salad salad = new Salad("Tomatoes with cucumbers");

            salad.Add(tomato);
            salad.Add(cucumber);

            Console.WriteLine(salad.GetTotalCalories()); // 35
            Console.WriteLine(salad.GetProductCount());  // 2

            Console.WriteLine(salad.ToString());
            // * Salad Tomatoes with cucumbers is 35 calories and have 2 products:
            //  - Tomato have 20 calories
            //  - Cucumber have 15 calories

            restaurant.Add(salad);

            Console.WriteLine(restaurant.Buy("Invalid salad")); // False

            // Initialize the second entities
            Vegetable corn = new Vegetable("Corn", 90);
            Salad casaDomingo = new Salad("Casa Domingo");

            casaDomingo.Add(tomato);
            casaDomingo.Add(cucumber);
            casaDomingo.Add(corn);

            restaurant.Add(casaDomingo);

            Console.WriteLine(restaurant.GetHealthiestSalad()); // Tomatoes with cucumbers

            Console.WriteLine(restaurant.GenerateMenu());
            // Casa Domingo have 2 salads:
            // * Salad Tomatoes with cucumbers is 35 calories and have 2 products:
            //  - Tomato have 20 calories
            //  - Cucumber have 15 calories
            // * Salad Casa Domingo is 125 calories and have 3 products:
            //  - Tomato have 20 calories
            //  - Cucumber have 15 calories
            //  - Corn have 90 calories
        }
    }
    public class Vegetable
    {
        private int calories;

        public Vegetable(string name, int calories)
        {
            this.Name = name;
            this.Calories = calories;
        }

        public string Name { get; set; }
        public int Calories
        {
            get => calories;
            set
            {
                if (value > 0)
                    calories = value;
            }
        }
        public override string ToString()
        {
            return $" - {this.Name} have {this.Calories} calories";
        }
    }
    public class Salad
    {
        private HashSet<Vegetable> products;

        public HashSet<Vegetable> Products
        {
            get { return products; }
            set { products = value; }
        }

        public string Name { get; set; }
        public Salad(string name)
        {
            this.Products = new HashSet<Vegetable>();
            this.Name = name;
        }
        public int GetTotalCalories()
        {
            return this.Products.Sum(x => x.Calories);
        }
        public int GetProductCount()
        {
            return this.Products.Count;
        }
        public void Add(Vegetable product)
        {
            this.Products.Add(product);
        }
        public override string ToString()
        {
            var sb = new StringBuilder();
            sb.AppendLine($"* Salad {this.Name} is {GetTotalCalories()} calories and have {GetProductCount()} products:");
            foreach (var product in this.Products)
            {
                sb.AppendLine($"{product.ToString()}");
            }
            return sb.ToString().TrimEnd();
        }
    }
    public class Restaurant
    {
        private HashSet<Salad> data;
        public string Name { get; set; }
        public HashSet<Salad> Data
        {
            get { return data; }
            set { data = value; }
        }
        public Restaurant(string name)
        {
            this.Data = new HashSet<Salad>();
            this.Name = name;
        }
        public void Add(Salad salad)
        {
            this.Data.Add(salad);
        }
        public bool Buy(string name)
        {
            for (int i = 0; i < this.Data.Count; i++)
            {
                if (this.Data.ElementAt(i).Name == name)
                {
                    this.Data.Remove(this.Data.ElementAt(i));
                    return true;
                }
            }
            return false;
        }
        public Salad GetHealthiestSalad()
        {
            return this.Data
                .OrderBy(x => x.Products.Sum(y => y.Calories))
                .FirstOrDefault();
        }
        public string GenerateMenu()
        {
            var sb = new StringBuilder();
            sb.AppendLine($"{this.Name} have {this.Data.Count} salads:");
            foreach (var item in this.Data)
            {
                sb.AppendLine($"{item.ToString()}");
            }
            return sb.ToString().TrimEnd();
        }
    }
}