using System.Drawing;
using System.Numerics;
using Silk.NET.Core;
using Silk.NET.Input;
using Silk.NET.OpenGL;
using Silk.NET.OpenGL.Extensions.ImGui;
using Silk.NET.Windowing;
using CaterpillarEngine.Rendering;
using CaterpillarEngine.Objects;
using CaterpillarEngine.IMGUI;
using ImGuiNET;

namespace CaterpillarEngine
{
	public class MainWindow
	{
		#region Variables
		#region General		
		private readonly IWindow _mainWindow = default!;
		private IInputContext _input = default!;
		private ImGuiController _controller = default!;
		#endregion
		#region Editor
		//private GameObject CurrentObject = default!;
		#endregion
		#region Testing
		GameObject go = new GameObject("Test");
		#endregion
		#endregion

		public MainWindow(WindowOptions options)
		{
			_mainWindow = Window.Create(options);
			_mainWindow.FileDrop += _mainWindow_FileDrop;
			_mainWindow.Load += MainWindow_Load;
			_mainWindow.Update += MainWindow_Update;
			_mainWindow.Render += MainWindow_Render;
			_mainWindow.Resize += MainWindow_Resize;
			_mainWindow.Closing += MainWindow_Closing;
			
		}

		private void _mainWindow_FileDrop(string[] obj)
		{

		}

		public void Run() => _mainWindow.Run();
		public void Close() => _mainWindow.Close();
		protected virtual void MainWindow_Resize(Silk.NET.Maths.Vector2D<int> obj) => GraphicsDevice.ViewPort(obj);

		protected virtual void MainWindow_Load()
		{
			var icon = RenderLoader.LoadRawImage(@"Assets\Sprites\csharp.png");
			_mainWindow.SetWindowIcon(ref icon);
			_mainWindow.Center();
			_controller = new
				(
					GraphicsDevice.GL = _mainWindow.CreateOpenGL(),
					_mainWindow,
					_input = _mainWindow.CreateInput()
				);
		}

		protected virtual void MainWindow_Update(double obj)
		{
			if (_input.Keyboards[0].IsKeyPressed(Key.Escape)) Close();
		}

		protected virtual void MainWindow_Render(double obj)
		{
			//_controller.Update((float)obj);

			GraphicsDevice.ClearColor(Color.AliceBlue);
			go.Render(obj);
			/*
			if (ImGui.Begin("Inspector",ImGuiWindowFlags.NoCollapse))
			{
				foreach (Component component in go)
				{
					component.ImGuiInspectorValues();
				}
				if (ImGui.BeginPopup("1"))
				{
					if (ImGui.MenuItem("Transform"))
					{
						go.AddComponent<Transform>();
					}
					if (ImGui.MenuItem("Sprite Renderer"))
					{
						go.AddComponent<SpriteRenderer>();
					}
					ImGui.EndPopup();
				}

				if (ImGui.Button("Add Component", new(ImGui.GetWindowWidth(),0)))
				{
					ImGui.OpenPopup("1");
				}
				ImGui.End();
			}
			*/ 

			if (!_mainWindow.IsClosing)
			{
				//_controller.Render();
			}
		}


		protected virtual void MainWindow_Closing()
		{
			GraphicsDevice.DisposeGL();
			_input.Dispose();
			_controller.Dispose();
			foreach (Component component in go)
			{
				component.OnClosing();
			}
		}
	}
}