using UnityEngine;
using DG.Tweening;

public class Skywalker_GameManager : MonoBehaviour
{
    public static Skywalker_GameManager Instance;

    public GameObject gameOverPanel;
    public Skywalker_PlayerController player;
    public Shared_DieZibu sharedDie;

    [Header("Blueberry Glow Pulse")]
    public Material glowMaterial;
    public string glowIntensityProp = "_Glow";
    public float glowBase = 1.75f;
    public float glowPeak = 7.75f;
    public float glowPulseDuration = 0.6f;

    private Sequence glowSeq;
    private int _ID_GlowIntensity;
    private string _lastGlowPropName;

    private bool isGameOver = false;

    void Awake()
    {
        if (Instance == null) Instance = this;
        else { Destroy(gameObject); return; }

        if (gameOverPanel) gameOverPanel.SetActive(false);

        if (!sharedDie && player)
            sharedDie = player.GetComponent<Shared_DieZibu>();

        if (!glowMaterial && sharedDie)
            glowMaterial = sharedDie.actorMaterial;

        _ID_GlowIntensity = Shader.PropertyToID(glowIntensityProp);
        _lastGlowPropName = glowIntensityProp;
    }

    public void KillByLaser() => TriggerGameOver(DeathType.Laser);
    public void KillNormal() => TriggerGameOver(DeathType.Normal);

    public void TriggerGameOver(DeathType type)
    {
        if (isGameOver || player == null || sharedDie == null) return;
        isGameOver = true;

        var col = player.GetComponent<Collider>();
        if (col) col.enabled = false;

        sharedDie.TriggerDeath(type);

        GameoverInvoker();
        Debug.Log("GAME OVER!");
    }

    public void GameoverInvoker(int duration = 5)
    {
        CancelInvoke(nameof(GameoverPanelEnabler));
        Invoke(nameof(GameoverPanelEnabler), duration);
    }

    public void GameoverPanelEnabler()
    {
        if (gameOverPanel) gameOverPanel.SetActive(true);
    }

    public void PulseBlueberryGlow()
    {
        if (!glowMaterial) return;

        if (_lastGlowPropName != glowIntensityProp || _ID_GlowIntensity == 0)
        {
            _ID_GlowIntensity = Shader.PropertyToID(glowIntensityProp);
            _lastGlowPropName = glowIntensityProp;
        }

        if (glowSeq != null && glowSeq.IsActive()) glowSeq.Kill();
        glowMaterial.SetFloat(_ID_GlowIntensity, glowBase);

        float half = Mathf.Max(0.01f, glowPulseDuration * 0.5f);

        glowSeq = DOTween.Sequence().SetId("BlueberryGlow")
            .Append(glowMaterial.DOFloat(glowPeak, _ID_GlowIntensity, half).SetEase(Ease.OutQuad).SetId("BlueberryGlow"))
            .Append(glowMaterial.DOFloat(glowBase, _ID_GlowIntensity, half).SetEase(Ease.InQuad).SetId("BlueberryGlow"));

        glowSeq.Play();
    }

    void OnDisable()
    {
        if (glowSeq != null && glowSeq.IsActive()) glowSeq.Kill();
        DOTween.Kill("BlueberryGlow");
        if (glowMaterial) glowMaterial.SetFloat(_ID_GlowIntensity, glowBase);
    }
}