using System;
using Echovoid.Runtime.Behavior.Rendering;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.Universal;

namespace SLSFramework.Rendering.PostProcessing
{
    public enum CustomPostProcessInjectionPoint
    {
        AfterTransparent,
        BeforePostProcess,
        AfterPostProcess
    }

    public abstract class ScriptablePostProcessorVolume : VolumeComponent, IPostProcessComponent, IDisposable
    {
        public virtual CustomPostProcessInjectionPoint InjectionPoint =>
            CustomPostProcessInjectionPoint.AfterPostProcess;

        public virtual int OrderInInjectionPoint => 0;
        
        protected Material material;

        protected abstract string GetShaderName();

        public virtual void Setup()
        {
            material = InternalShaderHelpers.GenerateTransientMaterial(GetShaderName());
        }

        public abstract void Render(CommandBuffer cmd, ref RenderingData renderingData, RTHandle source, RTHandle destination);

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        public virtual void Dispose(bool disposing)
        {
            CoreUtils.Destroy(material);
        }

        public abstract bool IsActive();

        public bool IsTileCompatible() => false;
    }
}