using System;
using System.Collections.Generic;
using System.Security.Policy;

class Program
{
    static void Main(string[] args)
    {
        Seller seller = new Seller();
        Player player = new Player();
        Shop shop = new Shop(player, seller);

        shop.Work();
    }
}

class Shop
{
    private Player _player = null;
    private Seller _seller = null;

    public Shop(Player player, Seller seller)
    {
        _player = player;
        _seller = seller;
    }

    public void Work()
    {
        const string ShowInventorySellerCommand = "1";
        const string BuyProductCommand = "2";
        const string ShowInventoryPlayerCommand = "3";
        const string IsExitCommand = "4";

        string userInput;
        bool isWorking = true;

        while (isWorking)
        {
            Console.Clear();
            Console.WriteLine($"Вы зашли в лавку торговца. У вас {_player.ShowMoney()} монет.\n{ShowInventorySellerCommand})Посмотреть товар.\n{BuyProductCommand})Купить товар.\n" +
                $"{ShowInventoryPlayerCommand})Посмотреть свой инвентарь.\n{IsExitCommand})Покинуть лавку.");
            userInput = Console.ReadLine();
            Console.Clear();

            switch (userInput)
            {
                case ShowInventorySellerCommand:
                    _seller.ShowInventory();
                    break;

                case BuyProductCommand:
                    SaleProduct();
                    break;

                case ShowInventoryPlayerCommand:
                    _player.ShowInventory();
                    break;

                case IsExitCommand:
                    isWorking = false;
                    break;
            }
        }
    }

    public bool IsEnoughMoney(Product product)
    {
        if (_player.ShowMoney() - product.Price < 0)
        {
            Console.WriteLine("У игрока недостаточно денег. Пускай покупает что-то другое или сваливает.");
            Console.ReadKey();

            return false;
        }

        Console.WriteLine("Сделка прошла успешно! Игрок купил новый меч.");
        Console.ReadKey();

        return true;
    }

    public void SaleProduct()
    {
        Console.WriteLine("Что бы вы хотели купить?");

        Product product = _seller.GiveProduct();

        if(product != null)
        {
            if (IsEnoughMoney(product))
            {
                _player.TakeProduct(product);
            }
            else
            {
                _seller.ReturnProduct(product);
            }
        }
    }
}

class Human
{
    protected List<Product> Products = new List<Product>();

    protected int Money = 0;

    public Human()
    {

    }

    public void ShowInventory()
    {
        foreach (Product product in Products)
        {
            Console.WriteLine($"Название:{product.Name}|Цена:{product.Price}|Урон:{product.Damage}|Прочность:{product.Endurance}");
        }

        Console.ReadKey();
    }
}

class Seller : Human
{
    public Seller()
    {
        FillProduct();
    }

    public void FillProduct()
    {
        Products.Add(new Product("WoodKnife", 5, 25, 100));
        Products.Add(new Product("IronKnife", 15, 50, 150));
        Products.Add(new Product("GoldKnife", 30, 100, 25));
    }

    public Product GiveProduct()
    {
        Product temporaryProduct = null;

        string userInput = Console.ReadLine();

        if (TrySearch(userInput))
        {
            foreach (var product in Products)
            {
                if (product.Name == userInput)
                {
                    temporaryProduct = product;
                    Money += product.Price;
                    Products.Remove(temporaryProduct);
                    break;
                }
            }
        }

        return temporaryProduct;
    }

    internal void ReturnProduct(Product product)
    {
        Products.Add(product);
    }

    private bool TrySearch(string productName)
    {
        foreach (var product in Products)
        {
            if (product.Name == productName)
            {
                return true;
            }
        }

        Console.WriteLine("Такого товара нет в наличии!");
        Console.ReadKey();

        return false;
    }
}

class Player : Human
{
    private Random _random = new Random();

    public Player()
    {
        Money = CreateMoney();
    }

    private int CreateMoney()
    {
        int minMoney = 5;
        int maxMoney = 30;

        int temporaryMoney = _random.Next(minMoney, maxMoney);

        return temporaryMoney;
    }

    public void TakeProduct(Product product)
    {
        if (product != null)
        {
            Products.Add(product);
            Money -= product.Price;
        }
    }

    public int ShowMoney()
    {
        return Money;
    }
}


class Product
{
    public Product (string name,int price, int damage, int endurance)
    {
        Name = name;
        Price = price;
        Damage = damage;
        Endurance = endurance;
    }

    public string Name { get; private set; }
    public int Price { get; private set; }
    public int Damage { get; private set; }
    public int Endurance { get; private set; }
}