using UnityEngine;
using DG.Tweening;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;

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

    public Volume saturation;

    // private ColorAdjustments colorAdjustments;

    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()
    {
        // 获取 ColorAdjustments 设置
        // if (saturation.profile.TryGet(out colorAdjustments))
        // {
        //     Debug.Log("ColorAdjustments is available.");
        // }
        // else
        // {
        //     Debug.LogError("ColorAdjustments settings not found in PostProcessProfile.");
        // }
    }

    // 动态调整饱和度
    public Tween TweenSaturation(float targetSaturation, float duration)
    {
        if (saturation != null)
        {
            // 将targetSaturation (0~1) 转换为weight (1~0)
            // targetSaturation = 0 时，weight = 1 (完全褪色)
            // targetSaturation = 1 时，weight = 0 (正常颜色)
            float targetWeight = 1f - targetSaturation;
            
            // 使用 DOTween 创建一个weight过渡动画
            Tween tween = DOTween.To(
                () => saturation.weight, // 获取当前weight值
                x => saturation.weight = x, // 设置新的weight值
                targetWeight, // 目标weight值
                duration // 过渡持续时间
            );

            return tween; // 返回 Tween 对象
        }
        else
        {
            Debug.LogError("Saturation Volume not found.");
            return null; // 如果找不到设置，返回 null
        }
    }

    // 重置饱和度效果
    public void ResetSaturation()
    {
        if (saturation != null)
        {
            // 直接设置weight为0，恢复正常颜色
            saturation.weight = 0f;
        }
    }
}