using Godot;
using Mr.BrickAdventures.Autoloads;

namespace Mr.BrickAdventures.scripts.UI;

[GlobalClass]
public partial class SpeedRunHud : Control
{
    [Export] private Label _timerLabel;

    public override void _Ready()
    {
        if (SpeedRunManager.Instance != null)
            SpeedRunManager.Instance.TimeUpdated += OnTimerUpdated;
    }

    /// <summary>
    /// Detaches from the autoload's signal. Without this, every level load left another handler
    /// attached to a freed HUD: SpeedRunManager outlives the scene, so it kept calling them and each
    /// one touched a disposed Label. It stayed hidden only because the timer was never started on
    /// Continue, so the signal never fired outside a fresh run.
    /// </summary>
    public override void _ExitTree()
    {
        if (SpeedRunManager.Instance != null)
            SpeedRunManager.Instance.TimeUpdated -= OnTimerUpdated;
    }

    private void OnTimerUpdated(double totalTime, double levelTime)
    {
        if (_timerLabel == null || !IsInstanceValid(_timerLabel)) return;

        _timerLabel.Text = SpeedRunManager.FormatTime(totalTime);
    }
}