using UnityEngine;
using UnityEngine.UI;
using DG.Tweening;
using Yarn.Unity;

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

    public Image blackoutPanel;   // 黑屏面板
    public Image redFlashPanel;  // 红色闪烁面板
    public float shakeDuration = 1.0f; // 震屏持续时间
    public float shakeIntensity = 0.1f; // 震屏强度

    private Vector3 originalCameraPosition;

    private void Awake()
    {
        // 确保单例模式
        if (Instance != null && Instance != this)
        {
            Destroy(gameObject);
        }
        else
        {
            Instance = this;
            DontDestroyOnLoad(gameObject); // 可选：保持在场景加载之间
        }
    }

    private void Start()
    {
        // 保存初始相机位置
        originalCameraPosition = Camera.main.transform.localPosition;
    }

    // 震屏效果
    [YarnCommand("shakeScreen")]
    public void ShakeScreen()
    {
        Camera.main.transform.DOPunchPosition(Vector3.one * shakeIntensity, shakeDuration, 10, 1);
    }

    // 黑屏淡入淡出效果
    [YarnCommand("fadeIn")]
    public void FadeBlackout(bool enable, float duration)
    {
        if (enable)
        {
            blackoutPanel.gameObject.SetActive(true);
            blackoutPanel.DOFade(1, duration).OnComplete(() => blackoutPanel.gameObject.SetActive(true));
        }
        else
        {
            blackoutPanel.DOFade(0, duration).OnComplete(() => blackoutPanel.gameObject.SetActive(false));
        }
    }

    // 红色闪烁效果
    [YarnCommand("flashRed")]
    public void FlashRed(float duration)
    {
        redFlashPanel.gameObject.SetActive(true);
        redFlashPanel.DOFade(1, duration / 2).OnComplete(() =>
        {
            redFlashPanel.DOFade(0, duration / 2).OnComplete(() =>
            {
                redFlashPanel.gameObject.SetActive(false);
            });
        });
    }
}