using Ichni.RhythmGame.Beatmap;
using UnityEngine;
using UnityEngine.Rendering.Universal;

namespace Ichni.RhythmGame
{
    public class VignetteEffect : EffectBase
    {
        #region [效果参数] Effect Parameters
        public float peak;
        public float smoothness;
        public Color color;
        public AnimationCurve intensityCurve;

        private Vignette _vignette;
        #endregion
        
        #region [初始化] Initialization
        public VignetteEffect(float effectTime, float peak, float smoothness, Color color, AnimationCurve intensityCurve)
            : base(effectTime)
        {
            this.effectTime = effectTime;
            this.peak = peak;
            this.smoothness = smoothness;
            this.color = color;
            this.intensityCurve = intensityCurve;
        }

        private void PrepareEffectHandle()
        {
            if (_vignette == null && PostProcessingManager.GlobalVolume != null)
            {
                PostProcessingManager.GlobalVolume.profile.TryGet(out _vignette);
            }
        }
        #endregion

        #region [效果逻辑覆盖] Effect Pattern Overrides
        public override void PreExecute()
        {
            PrepareEffectHandle();
            if (_vignette != null)
            {
                _vignette.smoothness.value = smoothness;
                _vignette.color.value = color;
            }
        }

        public override void Execute()
        {
            if (_vignette != null)
            {
                float currentIntensity = intensityCurve.Evaluate(effectProgressPercent) * peak;
                _vignette.intensity.value = currentIntensity;
            }
        }

        // 注意暗角和其它的不同，它的默认值通常不是0而是类似0.2左右
        public override void Adjust() { ResetEffect(); }
        public override void Recover() { ResetEffect(); }
        public override void Disrupt() { ResetEffect(); }

        private void ResetEffect()
        {
            if (_vignette != null) _vignette.intensity.value = 0f; // 你可以修改为符合你游戏默认画风的默认暗角值
        }
        #endregion

    }

}