using System;
using System.Collections.Generic;

namespace TicTacToe_Game
{
    class TicTacToe : TicTacToe_base
    {
        private readonly String player = "X";
        private readonly String computer = "O";
        private bool playerTurn;

        public TicTacToe() : base() {}

        // checks if the user or the computer has won the game
        protected override bool CheckWin(String user)
        {
            foreach (int[] winList in WinLists)
            {
                if (board.ContainsKey(winList[0]) && board[winList[0]] == user &&
                    board.ContainsKey(winList[1]) && board[winList[1]] == user &&
                    board.ContainsKey(winList[2]) && board[winList[2]] == user)
                    return true;
            }
            return false;
        }

        // runs the game
        public override void Run()
        {
            Console.WriteLine("Welcome to Tic-Tac-Toe!");
            DrawBoard();

            playerTurn = true;
            while (true)
            {
                int pos = 0;
                if (playerTurn)
                {
                    Console.WriteLine("Enter a position (1-9): ");
                    try
                    {
                        pos = Convert.ToInt32(Console.ReadLine());
                    }
                    catch (FormatException)
                    {
                        Console.WriteLine("Invalid input. Please enter a number.");
                        continue;
                    }
                    if (!AddInputToBoard(pos, player))
                    {
                        Console.WriteLine("Invalid input. Please enter a valid position.");
                        continue;
                    }
                }
                else
                {
                    while (!AddInputToBoard(pos, computer))
                    {
                        pos = FindNextPosByAI();
                    }
                    Console.WriteLine("Computer placed an O.");
                }

                DrawBoard();

                if (CheckWin(player))
                {
                    Console.WriteLine("You win!");
                    break;
                }
                else if (CheckWin(computer))
                {
                    Console.WriteLine("Computer wins!");
                    break;
                }
                else if (board.Count == 9)
                {
                    Console.WriteLine("Tie game!");
                    break;
                }

                playerTurn = !playerTurn;
            }
        }
    }
}