using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace Lodestone.TestBed
{
    public partial class MainWindow : Form
    {
        public class DemoHandle
        {
            public Type Demo;

            public Demo Create()
            {
                return (Demo)System.Activator.CreateInstance(Demo);
            }

            public override string ToString()
            {
                return Demo.Name;
            }
        }

        Demo currentDemo;
        Blacklight.Core.Cameras.MicroscopeCamera camera;

        public MainWindow()
        {
            InitializeComponent();

            var types = System.Reflection.Assembly.GetExecutingAssembly().GetTypes();
            var demos = types
                .Where(x => x.IsClass && x.IsSubclassOf(typeof(Demo)))
                .Select(x => new DemoHandle
                {
                    Demo = x,
                })
                .ToArray();

            DemoSelector.Items.AddRange(demos);

            if (DemoSelector.Items.Count != 0)
            {
                DemoSelector.SelectedIndex = 0;
            }

            camera = new Blacklight.Core.Cameras.MicroscopeCamera(viewport.DrawableSurface);
            camera.Magnification = 1.0 / 5.0;
        }

        private void MainWindow_Load(object sender, EventArgs e)
        {
            
        }

        private void GameLoopTimer_Tick(object sender, EventArgs e)
        {
            if (currentDemo != null)
            {
                currentDemo.Step(1.0 / 60.0);
                var scene = currentDemo.Draw();

                viewport.DrawableSurface.DrawScene(scene, camera);
                viewport.DrawableSurface.SubmitDrawCalls();
            }
        }

        private void DemoSelector_SelectedIndexChanged(object sender, EventArgs e)
        {
            var demoHandle = (DemoHandle)DemoSelector.SelectedItem;

            currentDemo = demoHandle.Create();
            currentDemo.Initialize();
        }
    }
}