using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace TTT
{
    public partial class Form1 : Form
    {

        int[,] board = new int [3,3];
        Random r = new Random();
        public Form1()
        {
            InitializeComponent();
        }

        private void newGameButton_Click(object sender, EventArgs e)
        {
            populateArray();
            //displayBoard();
            while (determineWinner() == -1)
            {
                //reload table
                resultLabel.Text = "Undetermined";
                populateArray();
                
            }
            if (determineWinner() == 0)
            {
                resultLabel.Text = "O Wins!";
            }
            else if (determineWinner() == 1)
            {
                resultLabel.Text = "X Wins!";
            }
            else if (determineWinner() == 2)
            {
                resultLabel.Text = "Draw";
            }
            else
            {
                resultLabel.Text = "Undetermined";
            }
            displayBoard();

        }

        void populateArray()
        {
            for (int i = 0; i < 3; ++i)
                for (int j = 0; j < 3; ++j)
                {
 
                    this.board[i,j] = (int) r.Next(9999) % 2;
                }
        }
        /*  returns 0 if "O" is winner
         *          1 if "X" is winner
         *          2 if draw
         *          -1 if there exist invalid combinations
                    both X's and O's winning
         */
        int determineWinner()
        {

            int winsOfX = 0;
            int winsOfO = 0;

            //count all wins of X
            // Wins on x axis
         if (this.board[0, 0] == 1 &&
            this.board[0, 1] == 1 &&
            this.board[0, 2] == 1)
                winsOfX++;

         if (this.board[1, 0] == 1 &&
             this.board[1, 1] == 1 &&
             this.board[1, 2] == 1)
                winsOfX++;

         if (this.board[2, 0] == 1 &&
             this.board[2, 1] == 1 &&
             this.board[2, 2] == 1)
                winsOfX++;
         // Count all wins for O
         //wins on y axis
         if (this.board[0, 0] == 0 &&
             this.board[1, 0] == 0 &&
             this.board[2, 0] == 0)
                winsOfO++;
        
         if (this.board[0, 1] == 0 &&
             this.board[1, 1] == 0 &&
             this.board[2, 1] == 0)
                winsOfO++;

         if (this.board[0, 2] == 0 &&
             this.board[1, 2] == 0 &&
             this.board[2, 2] == 0)
                winsOfO++;

            if (this.board[0, 0] == 0 &&
               this.board[0, 1] == 0 &&
               this.board[0, 2] == 0)
                winsOfO++;

            if (this.board[1, 0] == 0 &&
                this.board[1, 1] == 0 &&
                this.board[1, 2] == 0)
                winsOfO++;

            if (this.board[2, 0] == 0 &&
                this.board[2, 1] == 0 &&
                this.board[2, 2] == 0)
                winsOfO++;

            //wins on y axis
            if (this.board[0, 0] == 0 &&
                this.board[1, 0] == 0 &&
                this.board[2, 0] == 0)
                winsOfO++;

            if (this.board[0, 1] == 0 &&
                this.board[1, 1] == 0 &&
                this.board[2, 1] == 0)
                winsOfO++;

            if (this.board[0, 2] == 0 &&
                this.board[1, 2] == 0 &&
                this.board[2, 2] == 0)
                winsOfO++;


            if (winsOfX == 1 && winsOfO == 0) //x wins
            {
                return 1;
            } 
            else if (winsOfX == 0 && winsOfO == 1) //o wins
            {
                return 0;
            }
                
            else if (winsOfX == 1 && winsOfO == 1) // Draw
            {
                return 2;
            }
            else // Invalid combination
            {
                return -1;
            }

        }
        
        void displayBoard()
        {
            if (board[0, 0] == 0)
                label1.Text = "O";
            else if(board[0, 0] == 1)
                label1.Text = "X";
            else
                label1.Text = "";

            if (board[0, 1] == 0)
                label2.Text = "O";
            else if (board[0,1] == 1)
                label2.Text = "X";
            else
                label2.Text = "";

            if (board[0, 2] == 0)
                label3.Text = "O";
            else if (board[0,2] == 1)
                label3.Text = "X";
            else
                label3.Text = "";

            if (board[1, 0] == 0)
                label4.Text = "O";
            else if (board[1,0] == 1)
                label4.Text = "X";
            else
                label4.Text = "";


            if (board[1, 1] == 0)
                label5.Text = "O";
            else if (board[1,1] == 1)
                label5.Text = "X";
            else
                label5.Text = "";


            if (board[1, 2] == 0)
                label6.Text = "O";
            else if (board[1,2] == 1)
                label6.Text = "X";
            else
                label6.Text = "";


            if (board[2, 0] == 0)
                label7.Text = "O";
            else if (board[2,0] == 1)
                label7.Text = "X";
            else
                label7.Text = "";


            if (board[2, 1] == 0)
                label8.Text = "O";
            else if (board[2,1] == 1)
                label8.Text = "X";
            else
                label8.Text = "";

            if (board[2, 2] == 0)
                label9.Text = "O";
            else if (board[2,2] == 1)
                label9.Text = "X";
            else
                label9.Text = "";
        }

        private void resetButton_Click(object sender, EventArgs e)
        {
            for (int x = 0; x < 3; x++)
            {
                for (int y = 0; y < 3; y++)
                    board[x, y] = -1;
            }
            displayBoard();
            resultLabel.Text = "";
        }
    }
}