using EasyHook;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;

namespace AxibugInject
{
    public class Utils
    {
        public static string HexDump(byte[] bytes, int bytesPerLine = 16)
        {
            if (bytes == null) return "<null>";
            int bytesLength = bytes.Length;

            char[] HexChars = "0123456789ABCDEF".ToCharArray();

            int firstHexColumn =
                  8                   // 8 characters for the address
                + 3;                  // 3 spaces

            int firstCharColumn = firstHexColumn
                + bytesPerLine * 3       // - 2 digit for the hexadecimal value and 1 space
                + (bytesPerLine - 1) / 8 // - 1 extra space every 8 characters from the 9th
                + 2;                  // 2 spaces 

            int lineLength = firstCharColumn
                + bytesPerLine           // - characters to show the ascii value
                + Environment.NewLine.Length; // Carriage return and line feed (should normally be 2)

            char[] line = (new String(' ', lineLength - Environment.NewLine.Length) + Environment.NewLine).ToCharArray();
            int expectedLines = (bytesLength + bytesPerLine - 1) / bytesPerLine;
            StringBuilder result = new StringBuilder(expectedLines * lineLength);

            for (int i = 0; i < bytesLength; i += bytesPerLine)
            {
                line[0] = HexChars[(i >> 28) & 0xF];
                line[1] = HexChars[(i >> 24) & 0xF];
                line[2] = HexChars[(i >> 20) & 0xF];
                line[3] = HexChars[(i >> 16) & 0xF];
                line[4] = HexChars[(i >> 12) & 0xF];
                line[5] = HexChars[(i >> 8) & 0xF];
                line[6] = HexChars[(i >> 4) & 0xF];
                line[7] = HexChars[(i >> 0) & 0xF];

                int hexColumn = firstHexColumn;
                int charColumn = firstCharColumn;

                for (int j = 0; j < bytesPerLine; j++)
                {
                    if (j > 0 && (j & 7) == 0) hexColumn++;
                    if (i + j >= bytesLength)
                    {
                        line[hexColumn] = ' ';
                        line[hexColumn + 1] = ' ';
                        line[charColumn] = ' ';
                    }
                    else
                    {
                        byte b = bytes[i + j];
                        line[hexColumn] = HexChars[(b >> 4) & 0xF];
                        line[hexColumn + 1] = HexChars[b & 0xF];
                        line[charColumn] = (b < 32 ? '·' : (char)b);
                    }
                    hexColumn += 3;
                    charColumn++;
                }
                result.Append(line);
            }
            return result.ToString();
        }


        const int WM_GETTEXT = 0x000D; const int WM_GETTEXTLENGTH = 0x000E;

        [DllImport("user32.dll", EntryPoint = "SendMessageA")] 
        public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, Byte[] lParam);

        [DllImport("user32.dll", EntryPoint = "SendMessageA")] 
        public static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, int lParam);

        public static bool GetTextValueByHandle(IntPtr HwndStatue,out string str)
        {
            if (HwndStatue != IntPtr.Zero)
            {
                int TextLen;
                TextLen = SendMessage(HwndStatue, WM_GETTEXTLENGTH, 0, 0);
                Byte[] byt = new Byte[TextLen];
                SendMessage(HwndStatue, WM_GETTEXT, TextLen + 1, byt);
                str = Encoding.Default.GetString(byt);
                return true;
            }
            str = string.Empty;
            return false;
        }


        [DllImport("user32.dll")]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
        [DllImport("User32.dll ")]

        public static extern IntPtr FindWindowEx(IntPtr parent, IntPtr childe, string strclass, string FrmText);



        [DllImport("User32.dll", EntryPoint = "SendMessage")]

        private static extern int SendMessage(IntPtr hWnd, int Msg, IntPtr wParam, string lParam);

        [DllImport("user32.dll", EntryPoint = "SendMessageA")]
        private static extern int SendMessage(IntPtr hwnd, int wMsg, int wParam, StringBuilder lParam);
    }
}