using System;
using System.Windows.Forms;
using System.Drawing;

namespace TicTacToe
{
    class Program : Form
    {

        // Gui
        Button btnOne;
        Button btnTwo;
        Button btnThree;
        Button btnFour;
        Button btnFive;
        Button btnSix;
        Button btnSeven;
        Button btnEight;
        Button btnNine;
        Label lblVictoryInfo;

        // Game table
        string[] table = { "0", "0", "0", "0", "0", "0", "0", "0", "0", };

        // Turn tracker
        int iTurn;

        public Program()
        {
            InitializeComponents();
            Random rnd = new Random();
            iTurn = rnd.Next(0,2);
        }

        void InitializeComponents()
        {
            // Main window
            this.Width = 100;
            this.Height = 150;
            this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.Fixed3D;
            this.Text = "Tic Tac Toe";
            this.Visible = true;
            this.Enabled = true;
            this.StartPosition = FormStartPosition.CenterScreen;

            // Button One
            btnOne = new Button();
            btnOne.Width = 30;
            btnOne.Height = 30;
            btnOne.Text = " ";
            btnOne.Font = new Font(Font.SystemFontName, 20f);
            btnOne.Location = new Point(10, 10);
            btnOne.Click += new EventHandler(btnOne_Click);

            // Button Two
            btnTwo = new Button();
            btnTwo.Width = 30;
            btnTwo.Height = 30;
            btnTwo.Text = " ";
            btnTwo.Font = new Font(Font.SystemFontName, 20f);
            btnTwo.Location = new Point(40, 10);
            btnTwo.Click += new EventHandler(btnTwo_Click);

            // Button Three
            btnThree = new Button();
            btnThree.Width = 30;
            btnThree.Height = 30;
            btnThree.Text = " ";
            btnThree.Font = new Font(Font.SystemFontName, 20f);
            btnThree.Location = new Point(70, 10);
            btnThree.Click += new EventHandler(btnThree_Click);

            // Button Four
            btnFour = new Button();
            btnFour.Width = 30;
            btnFour.Height = 30;
            btnFour.Text = " ";
            btnFour.Font = new Font(Font.SystemFontName, 20f);
            btnFour.Location = new Point(10, 40);
            btnFour.Click += new EventHandler(btnFour_Click);

            // Button Five
            btnFive = new Button();
            btnFive.Width = 30;
            btnFive.Height = 30;
            btnFive.Text = " ";
            btnFive.Font = new Font(Font.SystemFontName, 20f);
            btnFive.Location = new Point(40, 40);
            btnFive.Click += new EventHandler(btnFive_Click);

            // Button Six
            btnSix = new Button();
            btnSix.Width = 30;
            btnSix.Height = 30;
            btnSix.Text = " ";
            btnSix.Font = new Font(Font.SystemFontName, 20f);
            btnSix.Location = new Point(70, 40);
            btnSix.Click += new EventHandler(btnSix_Click);

            // Button Seven
            btnSeven = new Button();
            btnSeven.Width = 30;
            btnSeven.Height = 30;
            btnSeven.Text = " ";
            btnSeven.Font = new Font(Font.SystemFontName, 20f);
            btnSeven.Location = new Point(10, 70);
            btnSeven.Click += new EventHandler(btnSeven_Click);

            // Button Eight
            btnEight = new Button();
            btnEight.Width = 30;
            btnEight.Height = 30;
            btnEight.Text = " ";
            btnEight.Font = new Font(Font.SystemFontName, 20f);
            btnEight.Location = new Point(40, 70);
            btnEight.Click += new EventHandler(btnEight_Click);

            // Button Nine
            btnNine = new Button();
            btnNine.Width = 30;
            btnNine.Height = 30;
            btnNine.Text = " ";
            btnNine.Font = new Font(Font.SystemFontName, 20f);
            btnNine.Location = new Point(70, 70);
            btnNine.Click += new EventHandler(btnNine_Click);

            // Add items to form
            this.Controls.Add(btnOne);
            this.Controls.Add(btnTwo);
            this.Controls.Add(btnThree);
            this.Controls.Add(btnFour);
            this.Controls.Add(btnFive);
            this.Controls.Add(btnSix);
            this.Controls.Add(btnSeven);
            this.Controls.Add(btnEight);
            this.Controls.Add(btnNine);
        }

        string TurnChecker()
        {
            if (iTurn == 1)
            {
                // X is up
                iTurn = 0;
                return "X";
            }

            else
            {
                // O is up
                iTurn = 1;
                return "O";
            }
        }

        void UpdateTable(int placement, string player)
        {
            table[placement] = player;
        }

        void CheckWinConditions(string player)
        {
            if (
                ((table[0] == player)) && ((table[1] == player)) && ((table[2] == player)))
            {
                btnOne.BackColor = Color.LightSalmon;
                btnTwo.BackColor = Color.LightSalmon;
                btnThree.BackColor = Color.LightSalmon;
                btnFour.Enabled = false;
                btnFive.Enabled = false;
                btnSix.Enabled = false;
                btnSeven.Enabled = false;
                btnEight.Enabled = false;
                btnNine.Enabled = false;
            }

            else if (
                ((table[0] == player)) && ((table[3] == player)) && ((table[6] == player)))
            {
                btnOne.BackColor = Color.LightSalmon;
                btnFour.BackColor = Color.LightSalmon;
                btnSeven.BackColor = Color.LightSalmon;
                btnTwo.Enabled = false;
                btnThree.Enabled = false;
                btnFive.Enabled = false;
                btnSix.Enabled = false;
                btnEight.Enabled = false;
                btnNine.Enabled = false;
            }

            else if (
                ((table[6] == player)) && ((table[7] == player)) && ((table[8] == player)))
            {
                btnSeven.BackColor = Color.LightSalmon;
                btnEight.BackColor = Color.LightSalmon;
                btnNine.BackColor = Color.LightSalmon;
                btnOne.Enabled = false;
                btnTwo.Enabled = false;
                btnThree.Enabled = false;
                btnFour.Enabled = false;
                btnFive.Enabled = false;
                btnSix.Enabled = false;
            }

            else if (
                ((table[0] == player)) && ((table[4] == player)) && ((table[8] == player)))
            {
                btnOne.BackColor = Color.LightSalmon;
                btnFive.BackColor = Color.LightSalmon;
                btnNine.BackColor = Color.LightSalmon;
                btnTwo.Enabled = false;
                btnThree.Enabled = false;
                btnFour.Enabled = false;
                btnSix.Enabled = false;
                btnSeven.Enabled = false;
                btnEight.Enabled = false;
            }

            else if (
                ((table[3] == player)) && ((table[4] == player)) && ((table[5] == player)))
            {
                btnFour.BackColor = Color.LightSalmon;
                btnFive.BackColor = Color.LightSalmon;
                btnSix.BackColor = Color.LightSalmon;
                btnOne.Enabled = false;
                btnTwo.Enabled = false;
                btnThree.Enabled = false;
                btnSeven.Enabled = false;
                btnEight.Enabled = false;
                btnNine.Enabled = false;
            }

            else if (
                ((table[2] == player)) && ((table[5] == player)) && ((table[8] == player)))
            {
                btnThree.BackColor = Color.LightSalmon;
                btnSix.BackColor = Color.LightSalmon;
                btnNine.BackColor = Color.LightSalmon;
                btnOne.Enabled = false;
                btnTwo.Enabled = false;
                btnFour.Enabled = false;
                btnFive.Enabled = false;
                btnSeven.Enabled = false;
                btnEight.Enabled = false;
            }
            else if (
                ((table[1] == player)) && ((table[4] == player)) && ((table[7] == player)))
            {
                btnTwo.BackColor = Color.LightSalmon;
                btnFive.BackColor = Color.LightSalmon;
                btnEight.BackColor = Color.LightSalmon;
                btnOne.Enabled = false;
                btnThree.Enabled = false;
                btnFour.Enabled = false;
                btnSix.Enabled = false;
                btnSeven.Enabled = false;
                btnNine.Enabled = false;
            }
        }

        void btnNine_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(8, sTurn);
            btnNine.Text = sTurn;
            btnNine.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnEight_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(7, sTurn);
            btnEight.Text = sTurn;
            btnEight.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnSeven_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(6, sTurn);
            btnSeven.Text = sTurn;
            btnSeven.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnSix_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(5, sTurn);
            btnSix.Text = sTurn;
            btnSix.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnFive_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(4, sTurn);
            btnFive.Text = sTurn;
            btnFive.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnFour_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(3, sTurn);
            btnFour.Text = sTurn;
            btnFour.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnThree_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(2, sTurn);
            btnThree.Text = sTurn;
            btnThree.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnTwo_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(1, sTurn);
            btnTwo.Text = sTurn;
            btnTwo.Enabled = false;
            CheckWinConditions(sTurn);
        }

        void btnOne_Click(object sender, EventArgs e)
        {
            string sTurn = TurnChecker();
            UpdateTable(0, sTurn);
            btnOne.Text = sTurn;
            btnOne.Enabled = false;
            CheckWinConditions(sTurn);
        }

        static void Main()
        { Application.Run(new Program()); }
    }
}