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//using System.Text;
//using static System.Console;

namespace ItemShop
{
    class Shop
    {
        private string GameTitle; // = "=== Item Shop ===";
        private string Description; // = "Welcome to our shop!\nYou can chose between three different items:";
        private decimal OrderTotal; // = 0;

        public Shop()
        {
            System.Console.SetWindowSize(width: 75, height: 25);
            GameTitle = "=== Item Shop ===";
            Description = "Welcome to our shop!\nYou can chose between three different items:";
            OrderTotal = 0;
    }

        public void Run()
        {
            DisplayIntro();
            System.Console.WriteLine();
            SellItem("\"Chopped Sword\"", 19.99M);
            SellItem("\"Short Sword\"", 99.99M);
            SellItem("\"Long Sword\"", 199.99M);

            DisplayOutro();
        }

        private void DisplayIntro()
        {
            System.Console.Title = GameTitle;
            System.Console.WriteLine("=================");
            System.Console.WriteLine(GameTitle);
            System.Console.WriteLine("=================\n");
            System.Console.WriteLine(Description);
        }

        private void SellItem(string itemName, decimal cost)
        {
            System.Console.OutputEncoding = System.Text.Encoding.UTF8;
            // TODO: try - catch, to eliminate format exception at string response?
            System.Console.WriteLine($"Would you like to buy a(n) {itemName} for {cost:C2}? (y/n)");
            string response = System.Console.ReadLine().Trim().ToLower();
            if (response.StartsWith('y'))
            {
                System.Console.WriteLine("How many do you like?");
                string numberResponse = System.Console.ReadLine();
                try
                {
                    int quantity = System.Convert.ToInt32(numberResponse);

                    decimal itemTotal = cost * quantity;
                    System.Console.WriteLine($"You bought {quantity}x of {itemName} for {itemTotal:C2}.");
                }
                catch (System.FormatException)
                {
                    System.Console.WriteLine("This was invalid. Try to type in a number.");
                    SellItem(itemName, cost);
                }
                catch (System.OverflowException)
                {
                    System.Console.WriteLine("This was a too high or too low number. Try to type in a more realistic one...");
                    SellItem(itemName, cost);
                }
            }
            else
            {
                System.Console.WriteLine($"Oh well, you didn't buy a(n) {itemName}.");
            }
        }

        // TODO: DisplayOrderTotal()
        private void DisplayOrderTotal()
        {
        }

        private void DisplayOutro()
        {
            System.Console.WriteLine("Thanks for shopping.");
            System.Console.WriteLine("\nPress any key to exit...");
            System.Console.ReadKey();
        }
    }
}					

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//using System.Text;
//using static System.Console;

namespace ItemShop
{
    class Shop
    {
        // Fields that won't change their values anymore, should be better coded as a constant field.
        const string GameTitle = "=== Item Shop ===";
        const string Description = "Welcome to our shop!\nYou can chose between three different items:";
        private decimal OrderTotal = 0;

        {
          ....
        }
    }
}					

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//using System.Text;
//using static System.Console;

namespace ItemShop
{
    internal class Shop
    {
        // Fields that won't change their values anymore, should be better coded as a constant field.
        private const string GameTitle = "=== Item Shop ===";
        private const string Description = "Welcome to our shop!\nYou can chose between three different items:";
        private decimal OrderTotal = 0.0M;
    }

    {
       ...
    }
}