using Ichni.RhythmGame.Beatmap;
using SLSUtilities.Rendering.PostProcessing; // 引入刚才写的 Volume 命名空间
using UnityEngine;

namespace Ichni.RhythmGame
{
    public class PixelateEffect : EffectBase
    {
        #region [效果参数] Effect Parameters
        [Range(0f, 1f)] public float bottomX;
        [Range(0f, 1f)] public float bottomY;
        public AnimationCurve intensityCurve;

        private PixelateVolume _pixelateVolume;
        #endregion
        
        #region [初始化] Initialization
        public PixelateEffect(float effectTime, float bottomX, float bottomY, AnimationCurve intensityCurve)
            : base(effectTime) // 激活受控时间分段
        {
            this.effectTime = effectTime;
            this.bottomX = Mathf.Clamp01(bottomX);
            this.bottomY = Mathf.Clamp01(bottomY);
            this.intensityCurve = intensityCurve;
        }

        private void PrepareHandle()
        {
            // 通过 Volume 体系接管控制权
            if (_pixelateVolume == null && PostProcessingManager.GlobalVolume != null)
            {
                PostProcessingManager.GlobalVolume.profile.TryGet(out _pixelateVolume);
            }
        }
        #endregion
        
        #region [效果逻辑覆盖] Effect Pattern Overrides
        public override void PreExecute()
        {
            PrepareHandle();
            if (_pixelateVolume != null)
            {
                _pixelateVolume.forceActive.value = true;
                _pixelateVolume.strengthX.value = 1f;
                _pixelateVolume.strengthY.value = 1f;
            }
        }

        public override void Execute()
        {
            if (_pixelateVolume != null)
            {
                float progress = intensityCurve == null ? effectProgressPercent : intensityCurve.Evaluate(effectProgressPercent);
                float x = Mathf.Lerp(1f, Mathf.Clamp01(bottomX), progress);
                float y = Mathf.Lerp(1f, Mathf.Clamp01(bottomY), progress);
                
                _pixelateVolume.strengthX.value = x;
                _pixelateVolume.strengthY.value = y;
            }
        }

        public override void Adjust() { ResetEffect(); }
        public override void Recover() { ResetEffect(); }
        public override void Disrupt() { ResetEffect(); }

        private void ResetEffect()
        {
            if (_pixelateVolume != null)
            {
                _pixelateVolume.forceActive.value = false;
                _pixelateVolume.strengthX.value = 1f;
                _pixelateVolume.strengthY.value = 1f;
            }
        }
        #endregion

    }

}