using Godot;
using Newlon;
using System;

public partial class PauseMenu : Control
{
	private static PauseMenu Instance;
	private bool previousPaused;
	private bool currently_paused = false;
	private AudioStream pauseSound = ResourceLoader.Load<AudioStream>("uid://ckja8ym50y0d4");
	private Control stolenFocus;
	public override void _Ready()
	{
		Instance = this;
		GetViewport().GuiFocusChanged += OnFocusChanged;
	}

	public void Continue()
	{
		GetParent<Control>().Visible = false;
		GetTree().Paused = previousPaused;
		currently_paused = false;
		stolenFocus.GrabFocus();
	}
	public void Restart()
	{
		GetTree().Paused = false;
		LevelController.Instance.RestartLevel();
		currently_paused = false;
	}
	public void Exit()
	{
		LevelController.Instance.EndLevel();
		currently_paused = false;
	}
	public static void Pause()
	{
		if (Instance.currently_paused)
		{
			return;
		}
		Instance.currently_paused = true;
		Instance.GetNode<Control>("%ContinueButton").GrabFocus();

		Instance.GetParent<Control>().Visible = true;
		Instance.previousPaused = Instance.GetTree().Paused;
		Instance.GetTree().Paused = true;
		AudioSequencer.Play("pause", Instance.pauseSound);
	}
    public override void _ExitTree()
    {
        GetViewport().GuiFocusChanged -= OnFocusChanged;
    }

	public void OnFocusChanged(Control to)
	{
		if (currently_paused) return;
		stolenFocus = to;
	}
}