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.IO;
using System.Windows.Forms;

namespace ustredniKolo2018
{
    public partial class Form1 : Form
    {
        //Variables that will be further used

        string input = string.Empty;
        Label[,] label = new Label[9,9];
        bool canUndo = false;
        int lastTurn = 0;
        string lastTurnStr = "";


        public Form1()
        {
            InitializeComponent();
        }

        private void loadButton_Click(object sender, EventArgs e)
        {
            //File input throught textbox

            try
            {
                input = File.ReadAllText(dstTextbox.Text);                
            }
            catch
            {
                MessageBox.Show("Invalid file path!");
            }

            //Proccessing text input and generation of labels

            string[] inputLines = input.Split(new[] { "\r\n", "\r", "\n" }, StringSplitOptions.None);


            for(int x = 0;x < 9;x++)
            {
                for (int y = 0; y < 9; y++)
                {
                    char[] charInput = inputLines[y].ToCharArray(); 

                    label[x, y] = new Label();

                    if (charInput[x] != '.')
                    {
                        label[x, y].Text = charInput[x].ToString();
                    }
                    else
                    {
                        label[x, y].Text = "  ";
                    }


                    label[x, y].Location = new Point(50 + x * 51, 50 + y * 51);
                    label[x, y].AutoSize = true;
                    label[x, y].BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
                    label[x, y].Font = new Font(FontFamily.GenericSansSerif,35.0F, FontStyle.Bold);

                    label[x, y].ForeColor = Color.Blue;
                    label[x, y].Click += new EventHandler(labelSelect);
                    this.Controls.Add(label[x, y]);
                }
            }
        }

        //Click handle - will select certain cell

        protected void labelSelect(object sender, EventArgs e)
        {
            foreach (Label lab in label)
            {
                lab.BackColor = Color.White;
            }

            Label lbl = sender as Label;
            lbl.BackColor = Color.Yellow;
        }

        //"Helpful" number input into selected cell

        private void numInput_Click(object sender, EventArgs e)
        {
            foreach (Label lab in label)
            {
                if (lab.Text == "  " && lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = Color.White;
                    lab.ForeColor = Color.Green;
                    lab.Text = helpNumber.Value.ToString();
                }
                else if (lab.ForeColor == Color.Green && lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = Color.White;
                    lab.ForeColor = Color.Green;
                    lab.Text = helpNumber.Value.ToString();
                }
                else if (lab.ForeColor == Color.Black && lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = Color.White;
                    lab.ForeColor = Color.Green;
                    lab.Text = helpNumber.Value.ToString();
                }
                else if (lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = Color.White;
                    MessageBox.Show("That is one of the numbers that was given - you cannot change that!");
                }
            }
        }

        //Inputting real deal numbers - error checking and solving is not implemented
        //Undo button variables input

        private void trueNumberInput_Click(object sender, EventArgs e)
        {
            foreach(Label lab in label)
            {
                if (lab.Text == "  " && lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = SystemColors.Window;
                    lab.ForeColor = Color.Black;
                    try
                    {
                        lastTurn = Convert.ToInt32(lab.Text);
                    }
                    catch
                    {
                        lastTurnStr = lab.Text;
                    }
                    lab.Text = trueNumber.Value.ToString();
                    canUndo = true;
                }
                else if (lab.ForeColor == Color.Green && lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = SystemColors.Window;
                    lab.ForeColor = Color.Black;
                    try
                    {
                        lastTurn = Convert.ToInt32(lab.Text);
                    }
                    catch
                    {
                        lastTurnStr = lab.Text;
                    }
                    lab.Text = trueNumber.Value.ToString();
                    canUndo = true;
                }
                else if (lab.ForeColor == Color.Black && lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = SystemColors.Window;
                    lab.ForeColor = Color.Black;
                    try
                    {
                        lastTurn = Convert.ToInt32(lab.Text);
                    }
                    catch
                    {
                        lastTurnStr = lab.Text;
                    }
                    lab.Text = trueNumber.Value.ToString();
                    canUndo = true;
                }
                else if (lab.BackColor == Color.Yellow)
                {
                    lab.BackColor = Color.White;
                    MessageBox.Show("That is one the numbers that was given - you cannot change that!");
                }
            }
        }

        //Single turn undo

        private void undoBtn_Click(object sender, EventArgs e)
        {
            if(canUndo)
            {
                foreach(Label lab in label)
                {
                    if(lab.BackColor == SystemColors.Window)
                    {
                        if(lastTurnStr == "  ")
                        {
                            lab.Text = "  ";
                        }
                        else
                        {
                            lab.Text = lastTurn.ToString();
                        }
                        canUndo = false;
                    }
                }
            }
            else
            {
                MessageBox.Show("You can undo only once or after making a move!");
            }
        }

        //Check for all nine

        private void nineChecker_Click(object sender, EventArgs e)
        {
            int one = 0;
            int two = 0;
            int three = 0;
            int four = 0;
            int five = 0;
            int six = 0;
            int seven = 0;
            int eight = 0;
            int nine = 0;

            foreach(Label l in label)
            {
                if (l.Text == "  ")
                    continue;


                if(Convert.ToInt32(l.Text) == 1)
                {
                    one++;
                }
                else if (Convert.ToInt32(l.Text) == 2)
                {
                    two++;
                }
                else if (Convert.ToInt32(l.Text) == 3)
                {
                    three++;
                }
                else if (Convert.ToInt32(l.Text) == 4)
                {
                    four++;
                }
                else if (Convert.ToInt32(l.Text) == 5)
                {
                    five++;
                }
                else if (Convert.ToInt32(l.Text) == 6)
                {
                    six++;
                }
                else if (Convert.ToInt32(l.Text) == 7)
                {
                    seven++;
                }
                else if (Convert.ToInt32(l.Text) == 8)
                {
                    eight++;
                }
                else if (Convert.ToInt32(l.Text) == 9)
                {
                    nine++;
                }
            }

            if(one == 9)
                ones.Text = "1 : HOTOVO";
            else
                ones.Text = "1 : NEHOTOVO";

            if (two == 9)
                twos.Text = "2 : HOTOVO";
            else
                twos.Text = "2 : NEHOTOVO";

            if (three == 9)
                threes.Text = "3 : HOTOVO";
            else
                threes.Text = "3 : NEHOTOVO";

            if (four == 9)
                fours.Text = "4 : HOTOVO";
            else
                fours.Text = "4 : NEHOTOVO";

            if (five == 9)
                fives.Text = "5 : HOTOVO";
            else
                fives.Text = "5 : NEHOTOVO";

            if (six == 9)
                sixs.Text = "6 : HOTOVO";
            else
                sixs.Text = "6 : NEHOTOVO";

            if (seven == 9)
                sevens.Text = "7 : HOTOVO";
            else
                sevens.Text = "7 : NEHOTOVO";

            if (eight == 9)
                eights.Text = "8 : HOTOVO";
            else
                eights.Text = "8 : NEHOTOVO";

            if (nine == 9)
                nines.Text = "9 : HOTOVO";
            else
                nines.Text = "9 : NEHOTOVO";
        }
    }
}