using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace OnlineStore
{
    class Product
    {
        private string name;
        private double price;
        private bool isOnPromotion;
        string promociq;

        public Product(string name, double price)
        {
            this.name = name;
            this.price = price;
            this.isOnPromotion = false;
        }
        public Product(string name, double price, bool isOnPromotion)
        {
            this.name = name;
            this.price = price;
            this.isOnPromotion = isOnPromotion;
        }
        public static void CreateProduct(string name, double price, Dictionary<string, Product> products)
        {
            Product P1 = new Product(name, price);

            products.Add(name, P1);
        }
        public static void CreateProduct(string name, double price, bool isOnPromotion, Dictionary<string, Product> products)
        {
            Product P2 = new Product(name, price, isOnPromotion);
            products.Add(name, P2);
        }

        public override string ToString()
        {
            double cena = price;
            if (this.isOnPromotion == true)
            {
                promociq = "YES";
                cena = cena - cena * 0.2;
            }
            else promociq = "NO";
            return $"Product -> {this.name} with price {cena:F2}. On promotion: {promociq}";

        }

        public String Name
        {
            get { return name; }
            set {
                if(value.Length<3)
                {
                    throw new ArgumentException("Invalid product name!");
                }
                name = value;
            }
        }
        public double Price
        {
            get { return price; }
            set
            {
                if (price < 0)
                {
                    throw new ArgumentException("Price should be positive!");
                }
                this.price = value;
            }

        }
        public bool IsOnPromotion
        {
            get { return isOnPromotion; }
            set { isOnPromotion = value; }
        }

    }
}