using Chickensoft.AutoInject;
using Chickensoft.GodotNodeInterfaces;
using Chickensoft.Introspection;
using Godot;

namespace GameJamDungeon
{
  public interface IApp : ICanvasLayer, IProvide<IAppRepo>;

  [Meta(typeof(IAutoNode))]
  public partial class App : CanvasLayer, IApp
  {
    public override void _Notification(int what) => this.Notify(what);

    public const string GAME_SCENE_PATH = "res://src/game/Game.tscn";

    public IGame Game { get; set; } = default!;

    public IInstantiator Instantiator { get; set; } = default!;

    IAppRepo IProvide<IAppRepo>.Value() => AppRepo;

    public IAppRepo AppRepo { get; set; } = default!;
    public IAppLogic AppLogic { get; set; } = default!;
    public AppLogic.IBinding AppBinding { get; set; } = default!;

    [Node] public IMenu Menu { get; set; } = default!;

    [Node] public ISubViewport GameWindow { get; set; } = default!;

    public void Initialize()
    {
      Instantiator = new Instantiator(GetTree());
      AppRepo = new AppRepo();
      AppLogic = new AppLogic();
      AppLogic.Set(AppRepo);
      Menu.NewGame += OnNewGame;
      Menu.Quit += OnQuit;
      this.Provide();
    }

    public void OnReady()
    {
      AppBinding = AppLogic.Bind();

      AppBinding
        .Handle((in AppLogic.Output.ShowLoadingScreen _) =>
        {
          Menu.Hide();
        })
        .Handle((in AppLogic.Output.SetupGameScene _) =>
        {
          Menu.Hide();
          Instantiator.SceneTree.Paused = true;
          Game = Instantiator.LoadAndInstantiate<Game>(GAME_SCENE_PATH);
          GameWindow.AddChildEx(Game);
        })
        .Handle((in AppLogic.Output.ShowGame _) =>
        {
          Instantiator.SceneTree.Paused = false;
          Game.Show();
        });


      AppLogic.Start();
    }

    public void OnNewGame() => AppLogic.Input(new AppLogic.Input.NewGame());

    public void OnQuit() => AppLogic.Input(new AppLogic.Input.QuitGame());

    public void OnExitTree()
    {
      AppLogic.Stop();
      AppBinding.Dispose();
      AppRepo.Dispose();
    }
  }
}