// ScoreHUD.cs
// Zweck: Einfaches Score-HUD (Singleton): Punkte anzeigen, Sichtbarkeit toggeln.
using TMPro;
using UnityEngine;

public class ScoreHUD : MonoBehaviour
{
    public static ScoreHUD Instance { get; private set; }

    [Header("UI")]
    [SerializeField] private CanvasGroup scoreCanvas;   // Canvas/Panel
    [SerializeField] private TMP_Text scoreLabel;       // Punkte-Text

    [Header("Settings")]
    [SerializeField] private bool showAtStart = true;   // Sichtbar am Start

    private int _score;

    private void Awake()
    {
        if (Instance != null && Instance != this)
        {
            Destroy(gameObject);
            return;
        }

        Instance = this;

        UpdateScoreLabel();
        UpdateVisibility();
    }

    // Punkt hinzufügen
    public void AddPoint(int amount = 1)
    {
        _score += amount;
        UpdateScoreLabel();
    }

    // Score zurücksetzen (neuer Run)
    public void ResetScore()
    {
        _score = 0;
        UpdateScoreLabel();
    }

    // Sichtbarkeit von außen (Optionsmenü)
    public void SetVisible(bool visible)
    {
        showAtStart = visible;
        UpdateVisibility();
    }

    private void UpdateVisibility()
    {
        if (!scoreCanvas) return;

        scoreCanvas.gameObject.SetActive(showAtStart);
        scoreCanvas.alpha = showAtStart ? 1f : 0f;
        scoreCanvas.interactable = false;
        scoreCanvas.blocksRaycasts = false;
    }

    private void UpdateScoreLabel()
    {
        if (scoreLabel) scoreLabel.text = _score.ToString();
    }

    public int CurrentScore => _score;
}