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

namespace ImageToBinary
{
    public partial class Form1 : Form
    {
        string binary = "";
        string text = "";
        bool isText = true;
        public Form1()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            // Show the dialog and get result.
            DialogResult result = openFileDialog1.ShowDialog();
            if (result == DialogResult.OK) // Test result.
            {
                textBox1.Text = (string)openFileDialog1.FileName;
            }
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Bitmap b = GetBitmap(textBox1.Text);
            string test = "";
            Log("This will take a few minutes");
            Log("Loaded image");
            Log("Decoding image...");
            for (int i = 0; i < b.Width; i += 16)
            {
                    for (int j = 0; j < b.Height; j+= 5)
                    {
                        if (i + 16 >= b.Width)
                        {
                            //Do nothing
                        }
                        else
                        {
                            for (int n = i + 16; n > i; n -= 4)
                            {
                                if (b.GetPixel(n, j).B == 255)
                                {
                                    test = test + "1";
                                }
                                else
                                {
                                    if (b.GetPixel(n - 1, j).B == 255)
                                    {
                                        test = test + "1";
                                    }
                                    else if (b.GetPixel(n - 1, j).B != 255)
                                    {
                                        test = test + "0";
                                    }
                                }
                            }
                        }
                    }
                }
            Log("Decoded to binary!");
            Log("First 4 binary: " + test.Substring(0, 4));
            Log("Length: " + test.Length);
            isText = true;
            binary = test;
            List<string> srrr = Split(test, 8).ToList();
            List<int> FinalInts = new List<int>();
            foreach (string s in srrr)
            {
                FinalInts.Add(Convert.ToInt32(s, 2));
            }
            string finalString = "";
            foreach (int i in FinalInts)
            {
                finalString += (char)i;
            }
            Regex rgx = new Regex("[^a-zA-Z0-9 #]");
            richTextBox2.Text = rgx.Replace(finalString, "");
            text = rgx.Replace(finalString, "");
            Log("Done!");
        }

        static IEnumerable<string> Split(string str, int chunkSize)
        {
            return Enumerable.Range(0, str.Length / chunkSize)
                .Select(i => str.Substring(i * chunkSize, chunkSize));
        }

        public static Bitmap GetBitmap(string filename)
        {
            Bitmap retBitmap = null;
            if (File.Exists(filename))
            {
                try
                {
                    retBitmap = new Bitmap(filename, true);
                }
                catch { }
            }
            return retBitmap;
        }

        public void Log(string text)
        {
            richTextBox1.Text += text + "\n";
        }

        private void button3_Click(object sender, EventArgs e)
        {
            if (isText)
            {
                richTextBox2.Text = binary;
                isText = false;
            }
            else
            {
                richTextBox2.Text = text;
                isText = true;
            }
        }
    }
}