using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading;
using System.Windows.Forms;
using Accord;
using Accord.Video;

namespace overlay
{
    public partial class overlayform : Form
    {
        public static string gamename = "Subnautica";
        Process p = new Process();

        public struct RECT
        {
            public int left, top, right, bottom;
        }
        public struct WINDOWPLACEMENT
        {
            public int length;
            public int flags;
            public int showCmd;
            public System.Drawing.Point ptMinPosition;
            public System.Drawing.Point ptMaxPosition;
            public System.Drawing.Rectangle rcNormalPosition;
        }




        //public Point MousePosition = Cursor.Position;


        RECT outrect;
        Graphics g;
        public bool RecordVideo = true;
        public ScreenCaptureStream stream;

        #region DLL Imports

        [DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)]
        static extern IntPtr FindWindowByCaption(IntPtr ZeroOnly, string lpWindowName);

        [DllImport("user32.dll")]
        static extern int SetWindowLong(IntPtr hWnd, int nIndex, int dwNewLong);

        [DllImport("user32.dll", SetLastError = true)]
        static extern int GetWindowLong(IntPtr window, int index);
        IntPtr handle = FindWindowByCaption(IntPtr.Zero, gamename);

        [DllImport("user32.dll")]
        static extern IntPtr GetForegroundWindow();

        [DllImport("user32.dll", SetLastError = true)]
        static extern bool GetWindowRect(IntPtr hwnd, out RECT lpRect);

        [DllImport("user32.dll")]
        [return: MarshalAs(UnmanagedType.Bool)]
        static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);

        #endregion






        public overlayform()
        {
            InitializeComponent();
        }



        public void WatchMouse()
        {
            //while (true)
           // {
                //MousePosition = Cursor.Position;
           // }
        }





        private void overlayform_Load(object sender, EventArgs e)
        {

            Thread startGameThread = new Thread(new ThreadStart(StartGame));
            startGameThread.Start();
            Thread WatchMouseThread = new Thread(new ThreadStart(WatchMouse));
            WatchMouseThread.Start();




            //Process.Start(@"C:\Program Files (x86)\Steam\steamapps\common\Subnautica\Subnautica.exe");


            //Thread.Sleep(3000);
            //Thread.Sleep(3000);


            this.SetStyle(
            ControlStyles.AllPaintingInWmPaint |
            ControlStyles.UserPaint |
            ControlStyles.DoubleBuffer,
            true);




            /* Making the RECT object that will handle info from WINApi function. */

            /* Saving data to that object */
            GetWindowRect(handle, out outrect);

            /* Change the size of the form to the size of the Game window. */
            this.Size = new Size(outrect.right - outrect.left, outrect.bottom - outrect.top);



            /* Change the position of the form to the position of the Game window. */
            this.Top = outrect.top;
            this.Left = outrect.left;

            /* Change form's style to make it transparent and to remove the border */
            //this.FormBorderStyle = FormBorderStyle.None;
            this.BackColor = System.Drawing.Color.Black;
            this.TransparencyKey = System.Drawing.Color.Black;
            this.TopMost = true;

            /* Using WINApi function GetWindowLong and SetWindowLong to be able to click throught the form */
            int initialStyle = GetWindowLong(this.Handle, -20);
            SetWindowLong(this.Handle, -20, initialStyle | 0x80000 | 0x20);

            /* Make the form on top of other windows */
            //this.TopMost = true;

            /* Change Form1 to your form's name if you have different.
            This is actually bad thing to do, but this will allow you to skip writing much code for our threading */
            overlayform.CheckForIllegalCrossThreadCalls = false;

            Thread PrePaintThread = new Thread(new ThreadStart(prepaint));
            PrePaintThread.Start();
            Thread followgamethread = new Thread(new ThreadStart(followgame));
            followgamethread.Start();


            if (RecordVideo == true)
            {

                Rectangle R = new Rectangle();
                R.Size = new Size(outrect.right - outrect.left, outrect.bottom - outrect.top);
                R.X = outrect.left;
                R.Y = outrect.top;


                stream = new ScreenCaptureStream(R);

                stream.NewFrame += new NewFrameEventHandler(video_NewFrame);
                MessageBox.Show("Recording will start after this messagebox is closed. Click P to stop recording.");
                stream.Start();
            }
            else
            {

            }




            //Thread stickThread = new Thread(new ThreadStart(stick));
            //stickThread.Start();
        }

        private void video_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            Bitmap bitmap = eventArgs.Frame;
        }

        private void prepaint()
        {
            while (true)
            {

                this.Refresh();

                /* Refresh rate is 50ms */
                System.Threading.Thread.Sleep(50);

            }
        }

        private void painttext(System.Drawing.Graphics g)
        {
            /* Make a new font object for drawing */
            Font bigFont = new Font("Arial", 12, FontStyle.Bold);
            /* Make a colored brush for drawing text */
            Brush mybrush = new SolidBrush(Color.White);
            /* Draw 'Hello, World' at position 50, 50 of the game window */
            g.DrawString("Diwif Game Recorder", bigFont, mybrush, 23, 23);



        }

        public void followgame()
        {

            try
            {


            while (true)
            {
                this.TopMost = true;
                handle = FindWindowByCaption(IntPtr.Zero, gamename);
                GetWindowRect(handle, out outrect);
                this.TopMost = true;
                this.Top = outrect.top;
                this.Left = outrect.left;
                this.TopMost = true;
                this.Size = new Size(outrect.right - outrect.left, outrect.bottom - outrect.top);
                this.TopMost = true;




                  /*
                //MINIMIZED CODE
                if (p.MainWindowHandle != IntPtr.Zero)
                {
                    if (p.MainWindowTitle.Contains("Subnautica"))
                    {
                        WINDOWPLACEMENT placement = new WINDOWPLACEMENT();
                        GetWindowPlacement(p.MainWindowHandle, ref placement);
                        switch (placement.showCmd)
                        {
                            case 1:
                                this.WindowState = FormWindowState.Normal;
                                break;
                            case 2:
                                this.WindowState = FormWindowState.Minimized;
                                break;
                            case 3:
                                MessageBox.Show("This overlay does not support maximized games");
                                Close();
                                break;
                        }
                    }
                }
                */



            }
            }
            catch (Exception)
            {
                MessageBox.Show("Overlay error: Cannot locate game window!");
            }

        }
        public void StartGame()
        {
            try
            {
                ProcessStartInfo i = new ProcessStartInfo();
                i.FileName = @"C:\Program Files (x86)\Steam\steamapps\common\Subnautica\Subnautica.exe";
                i.WindowStyle = ProcessWindowStyle.Normal;
                p.StartInfo = i;
                //p.Start();
            }
            catch (Exception ex)
            {
                MessageBox.Show("Error starting Subnautica.");
            }

        }

        private void overlayform_Paint(object sender, PaintEventArgs e)
        {
            g = e.Graphics;
            painttext(g);
        }

        private void CloseGamebtn_Click(object sender, EventArgs e)
        {
            try
            {
                Process[] processes;
                processes = Process.GetProcessesByName(gamename);
                foreach (Process proc in processes)
                {
                    proc.Close();
                }
                Close();
            }
            catch (Exception)
            {
                MessageBox.Show("Failed to close Subnautica / Diwif Game Recorder.");
            }

        }

        private void overlayform_KeyDown(object sender, KeyEventArgs e)
        {
            if (e.KeyCode == Keys.P)
            {
                stream.Stop();
            }
        }
    }
}