using Dashboard.Drawing;
using System.Drawing;
using System.Text;
using Dashboard.Drawing.OpenGL;
using Dashboard.ImmediateUI;
using Dashboard.OpenTK.PAL2;
using OpenTK.Graphics;
using OpenTK.Platform;
using OpenTK.Graphics.OpenGL;
using OpenTK.Mathematics;
using Box2d = Dashboard.Box2d;
using TK = OpenTK.Platform.Toolkit;
using Dashboard;

TK.Init(new ToolkitOptions()
{
    ApplicationName = "DashTerm",
    Windows = new ToolkitOptions.WindowsOptions()
    {
        EnableVisualStyles = true,
        IsDPIAware = true,
    }
});

Application app = new Application(new Pal2DashboardBackend() 
{ 
    GraphicsApiHints = new OpenGLGraphicsApiHints()
    {
        Version = new Version(3, 2),
        ForwardCompatibleFlag = true,
        DebugFlag = true,
        Profile = OpenGLProfile.Core,
        sRGBFramebuffer = true,

        SwapMethod = ContextSwapMethod.Undefined,

        RedColorBits = 8,
        GreenColorBits = 8,
        BlueColorBits = 8,
        AlphaColorBits = 8,
        Multisamples = 0,

        SupportTransparentFramebufferX11 = true,
    }
});

PhysicalWindow window;
SolidBrush fg = new SolidBrush(Color.FromArgb(0, 0, 0, 0));
SolidBrush bg = new SolidBrush(Color.Black);
CancellationTokenSource source = new CancellationTokenSource();
GLEngine engine;
ContextExecutor executor;
DimUI dimUI;
Vector2 mousePos = Vector2.Zero;
Random r = new Random();
List<Vector3> points = new List<Vector3>();
IFont font;
StringBuilder builder = new StringBuilder();

app.PostInitializing += (sender, ea) => {
    window = (PhysicalWindow)app.CreatePhysicalWindow();

    window.Title = "DashTerm";
    TK.Window.SetMinClientSize(window.WindowHandle, 300, 200);
    TK.Window.SetClientSize(window.WindowHandle, new Vector2i(320, 240));
    TK.Window.SetBorderStyle(window.WindowHandle, WindowBorderStyle.ResizableBorder);
    // TK.Window.SetTransparencyMode(wnd, WindowTransparencyMode.TransparentFramebuffer, 0.1f);

    OpenGLDeviceContext context = (OpenGLDeviceContext)window.DeviceContext;

    context.MakeCurrent();
    context.SwapGroup.SwapInterval = 1;

    engine = new GLEngine();
    engine.Initialize();
    
    executor = engine.GetExecutor(context);

    dimUI = new DimUI(new DimUIConfig()
    {
        Font = new NamedFont("Noto Sans", 9f),
    });

    EventQueue.EventRaised += (handle, type, eventArgs) =>
    {
        if (handle != window.WindowHandle)
            return;

        switch (type)
        {
            case PlatformEventType.Close:
                source.Cancel();
                break;
            case PlatformEventType.MouseMove:
                mousePos = ((MouseMoveEventArgs)eventArgs).ClientPosition;
                break;
        }
    };

    TK.Window.SetMode(window.WindowHandle, WindowMode.Normal);
    font = Typesetter.LoadFont("Nimbus Mono", 12f);

    window.Painting += (sender, ea) => {
            TK.Window.GetFramebufferSize(context.WindowHandle, out Vector2i framebufferSize);
            executor.BeginFrame();

            dimUI.Begin(new Box2d(0, 0, framebufferSize.X, framebufferSize.Y), window.DrawQueue);
            dimUI.Text("Hello World!");
            dimUI.Button("Cancel"); dimUI.SameLine();
            dimUI.Button("OK");

            dimUI.Input("type me!", builder);

            dimUI.BeginMenu();

            if (dimUI.MenuItem("File"))
            {
                dimUI.BeginMenu();
                dimUI.MenuItem("New Window");
                dimUI.MenuItem("Preferences");
                dimUI.MenuItem("Exit");
                dimUI.EndMenu();
            }

            if (dimUI.MenuItem("Edit"))
            {
                dimUI.BeginMenu();
                dimUI.MenuItem("Cut");
                dimUI.MenuItem("Copy");
                dimUI.MenuItem("Paste");

                if (dimUI.MenuItem("Send Char"))
                {
                    dimUI.BeginMenu();
                    dimUI.EndMenu();
                }

                dimUI.EndMenu();
            }

            if (dimUI.MenuItem("View"))
            {
                dimUI.BeginMenu();
                dimUI.MenuItem("Clear");

                if (dimUI.MenuItem("Set Size"))
                {
                    dimUI.BeginMenu();
                    dimUI.MenuItem("24 x 40");
                    dimUI.MenuItem("25 x 40");
                    dimUI.MenuItem("24 x 80");
                    dimUI.MenuItem("25 x 80");
                    dimUI.MenuItem("25 x 120");
                    dimUI.EndMenu();
                }

                dimUI.EndMenu();
            }

            dimUI.Finish();

            GL.Viewport(0, 0, framebufferSize.X, framebufferSize.Y);
            GL.ClearColor(0.3f, 0.3f, 0.3f, 1.0f);
            GL.Clear(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit);
            GL.Disable(EnableCap.DepthTest);
            GL.Enable(EnableCap.Blend);
            GL.BlendFunc(BlendingFactor.SrcAlpha, BlendingFactor.OneMinusSrcAlpha);
            GL.ColorMask(true, true, true, true);

            executor.Draw(window.DrawQueue);
            executor.EndFrame();

            context.SwapGroup.Swap();
    };
};

app.Run(true, source.Token);