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

namespace Zennysoft.Game.Ma;

public interface IMainMenu : IControl
{
  event MainMenu.StartGameEventHandler StartGame;
  event MainMenu.EnemyViewerEventHandler EnemyViewer;
  event MainMenu.GalleryEventHandler Gallery;
  event MainMenu.QuitEventHandler Quit;

  void FadeIn();
}

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

  [Node] public IButton StartGameButton { get; set; } = default!;

  [Node] public IButton EnemyViewerButton { get; set; } = default!;

  [Node] public IButton GalleryButton { get; set; } = default!;

  [Node] public IButton OptionsButton { get; set; } = default!;

  [Node] public IButton QuitButton { get; set; } = default!;

  [Signal]
  public delegate void StartGameEventHandler();
  [Signal]
  public delegate void EnemyViewerEventHandler();
  [Signal]
  public delegate void GalleryEventHandler();
  [Signal]
  public delegate void OptionsEventHandler();
  [Signal]
  public delegate void QuitEventHandler();

  public void OnReady()
  {
	StartGameButton.Pressed += OnStartGamePressed;
	EnemyViewerButton.Pressed += EnemyViewerButton_Pressed;
	GalleryButton.Pressed += GalleryButton_Pressed;
	OptionsButton.Pressed += OptionsButton_Pressed;
	QuitButton.Pressed += OnQuitPressed;
	StartGameButton.GrabFocus();
  }

  public void FadeIn()
  {
	StartGameButton.GrabFocus();
	Show();
  }

  public void OnExitTree()
  {
	StartGameButton.Pressed -= OnStartGamePressed;
	EnemyViewerButton.Pressed -= EnemyViewerButton_Pressed;
	GalleryButton.Pressed -= GalleryButton_Pressed;
	OptionsButton.Pressed -= OptionsButton_Pressed;
	QuitButton.Pressed -= OnQuitPressed;
  }

  public void OnStartGamePressed() => EmitSignal(SignalName.StartGame);

  private void GalleryButton_Pressed() => EmitSignal(SignalName.Gallery);

  private void EnemyViewerButton_Pressed() => EmitSignal(SignalName.EnemyViewer);

  private void OptionsButton_Pressed() => EmitSignal(SignalName.Options);

  public void OnQuitPressed() => EmitSignal(SignalName.Quit);
}