using UnityEngine;
using UnityEngine.UI;

public class FadeToBlack : MonoBehaviour
{
    public float fadeDuration = 2f;
    private Image fadeImage;
    private bool startFading = false;
    private float timer = 0f;
    private bool fadeComplete = false;
    public GameObject startMenuUI; // Assign this in Inspector if needed


    void Start()
    {
        fadeImage = GetComponent<Image>();

        if (fadeImage == null)
        {
            Debug.LogError("FadeToBlack: No Image component found!");
            return;
        }

        Color startColor = fadeImage.color;
        startColor.a = 0f;
        fadeImage.color = startColor;

        Debug.Log("FadeToBlack: Initialized with alpha 0.");
    }

    void Update()
    {
        if (startFading && !fadeComplete)
        {
            timer += Time.unscaledDeltaTime;
            float alpha = Mathf.Clamp01(timer / fadeDuration);

            Color newColor = fadeImage.color;
            newColor.a = alpha;
            fadeImage.color = newColor;

            if (alpha >= 1f)
            {
                fadeComplete = true;
                Debug.Log("FadeToBlack: Fade complete.");
                OnFadeComplete();
            }
        }
    }

    public void StartFade()
    {
        Debug.Log("FadeToBlack: StartFade() called.");
        startFading = true;

        if (fadeImage != null)
        {
            fadeImage.color = new Color(0f, 0f, 0f, 0f); // Ensure it's black and invisible at the start
        }

        if (startMenuUI != null && startMenuUI.activeInHierarchy)
        {
            Debug.Log("Start menu was still active — disabling it.");
            startMenuUI.SetActive(false);
        }
    }



    private void OnFadeComplete()
    {
        Debug.Log("Fade complete — now locking cursor and pausing game.");
        Time.timeScale = 0f;
        Cursor.lockState = CursorLockMode.None;
        Cursor.visible = true;
    }
}