//Keys.cs

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

namespace Utilities
{
    public static class Keys
    {
        const int WM_KEYDOWN = 0x100;
        const int WM_KEYUP = 0x101;

        [DllImport("user32.dll", EntryPoint = "FindWindow")]
        private static extern IntPtr FindWindow(string lp1, string lp2);

        [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
        [return: MarshalAs(UnmanagedType.Bool)]
        private static extern bool SetForegroundWindow(IntPtr hWnd);

        [return: MarshalAs(UnmanagedType.Bool)]
        [DllImport("user32.dll", SetLastError = true)]
        public static extern bool PostMessage(IntPtr hWnd, uint Msg, int wParam, int lParam);

        [DllImport("user32.dll", SetLastError = true)]
        static extern void keybd_event(byte bVk, byte bScan, int dwFlags, int dwExtraInfo);

        public static void SendToGame(string text)
        {
            Clipboard.SetText(text);
            IntPtr handle = FindWindow(null, "Guild Wars 2");
            
            if (!handle.Equals(IntPtr.Zero))
            {
                if (SetForegroundWindow(handle))
                {

                    SendEnter(handle);
                    SendPaste(handle);
                    SendEnter(handle);
                }
            }
        }

        static void SendEnter(IntPtr Handle)
        {
            //Enter Key Down
            PostMessage(Handle, WM_KEYDOWN, 0x0D, 0x101c0001);
            Thread.Sleep(100);
            //Enter Key Up
            PostMessage(Handle, WM_KEYUP, 0x0D, 0x101c0001);
            Thread.Sleep(100);
        }

        static void SendPaste(IntPtr Handle)
        {
            //Press and Hold Control
            keybd_event(0xA2, 0, 0, 0);
            //Send V
            PostMessage(Handle, WM_KEYDOWN, 0x56, 0x002f0001);
            Thread.Sleep(100);
            //Release Control
            keybd_event(0xA2, 0, 2, 0);
            Thread.Sleep(100);
            //Simulate backspace to remove the V from the paste :/
            PostMessage(Handle, WM_KEYDOWN, 0x08, 0xe0001);
            Thread.Sleep(100);
            PostMessage(Handle, WM_KEYUP, 0x08, 0xe0001);
        }
    
    }
}




//Translation.cs

using System;
using System.Net;
using System.Text;
using System.Text.RegularExpressions;
using System.Web;
using System.Web.Script.Serialization;

namespace Utilities
{
    public static class Translator
    {
        public static string TranslateGoogle(string text, string fromCulture, string toCulture)
        {
            fromCulture = fromCulture.ToLower();
            toCulture = toCulture.ToLower();

            string[] tokens = fromCulture.Split('-');
            if (tokens.Length > 1)
                fromCulture = tokens[0];

            tokens = toCulture.Split('-');
            if (tokens.Length > 1)
                toCulture = tokens[0];

            string url = string.Format(@"http://translate.google.com/translate_a/t?client=j&text={0}&hl=en&sl={1}&tl={2}",
                                       HttpUtility.UrlEncode(text), fromCulture, toCulture);

            string html = null;
            try
            {
                WebClient web = new WebClient();

                web.Headers.Add(HttpRequestHeader.UserAgent, "Mozilla/5.0");
                web.Headers.Add(HttpRequestHeader.AcceptCharset, "UTF-8");

                web.Encoding = Encoding.UTF8;
                html = web.DownloadString(url);
            }
            catch (Exception ex)
            {
                return null;
            }

            string result = Regex.Match(html, "trans\":(\".*?\"),\"", RegexOptions.IgnoreCase).Groups[1].Value;

            if (string.IsNullOrEmpty(result))
            {
                return null;
            }

            JavaScriptSerializer ser = new JavaScriptSerializer();
            return ser.Deserialize(result, typeof(string)) as string;
        }
    }
}





//MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;

namespace Translator
{
    public partial class MainWindow : Window
    {
        public MainWindow()
        {
            InitializeComponent();
            Loaded += MainWindow_Loaded;
        }

        void MainWindow_Loaded(object sender, RoutedEventArgs e)
        {
            TranslationType.SelectionChanged+=TranslationType_SelectionChanged;
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            if (string.IsNullOrWhiteSpace(TextToTranslate.Text)) return;
            var text = TextToTranslate.Text.Replace(".","");
            var trans = TranslationType.SelectedIndex == 0 ? Utilities.Translator.TranslateGoogle(text, "en", "de") : Utilities.Translator.TranslateGoogle(text, "de", "en");
            LastTranslation.Text = text + "  :  " + trans;
            if (SendToGame.IsChecked == true)
            {
                Utilities.Keys.SendToGame(trans);
            }

        }

        private void CloseButton_Click(object sender, RoutedEventArgs e)
        {
            Application.Current.Shutdown();
        }


        private void Grid_PreviewMouseDown_1(object sender, MouseButtonEventArgs e)
        {
            this.DragMove();
        }

        private void TranslationType_SelectionChanged(object sender, SelectionChangedEventArgs e)
        {
            SendToGame.IsChecked = TranslationType.SelectedIndex == 0 ? true : false;
        }
    }
}