using System;
using UnityEngine;
using System.Collections.Generic;

namespace Ichni.RhythmGame
{
    // 以EnvironmentObject为基底，支持伪阴影shader参数刷新
    public class BasicEnvironmentObject : EnvironmentObject
    {
        [Header("Pseudo Shadow Settings")] public Renderer shadowRenderer; // 指向带有伪阴影shader的Renderer

        [Range(-1, 1)] public float shadowThreshold = 0.2f;
        [Range(0, 1)] public float shadowSmoothness = 0.5f;
        public bool useWorldLight = false;
        public Vector3 fakeLightDir = new Vector3(0.5f, 1, 0.5f);
        public override bool haveEmission => true;

        public static BasicEnvironmentObject GenerateElement(string elementName, Guid id, List<string> tags,
            bool isFirstGenerated, string themeBundleName, string objectName, GameElement parentElement,
            bool isStatic,
            float shadowThreshold, float shadowSmoothness, bool useWorldLight, Vector3 fakeLightDir)
        {
            BasicEnvironmentObject basicEnvObj = EnvironmentObject.GenerateElement(elementName, id, tags,
                isFirstGenerated, themeBundleName, objectName, parentElement, isStatic).GetComponent<BasicEnvironmentObject>();


            basicEnvObj.shadowThreshold = shadowThreshold;
            basicEnvObj.shadowSmoothness = shadowSmoothness;
            basicEnvObj.useWorldLight = useWorldLight;
            basicEnvObj.fakeLightDir = fakeLightDir;
            return basicEnvObj;
        }

        public override void Refresh()
        {
            base.Refresh();
            if (shadowRenderer == null || shadowRenderer.material == null) return;
            var mat = shadowRenderer.material;
            mat.SetColor("_Color", colorSubmodule.currentBaseColor);
            mat.SetColor("_ShadowColor", colorSubmodule.currentEmissionColor);
            mat.SetFloat("_ShadowThreshold", shadowThreshold);
            mat.SetFloat("_ShadowSmoothness", shadowSmoothness);
            mat.SetVector("_FakeLightDir", new Vector4(fakeLightDir.x, fakeLightDir.y, fakeLightDir.z, 0));
            mat.SetFloat("_UseWorldLight", useWorldLight ? 1 : 0);
        }
    }

    namespace Beatmap
    {
        public class BasicEnvironmentObject_BM : EnvironmentObject_BM
        {

            public float shadowThreshold;
            public float shadowSmoothness;
            public bool useWorldLight;
            public Vector3 fakeLightDir;

            public BasicEnvironmentObject_BM()
            {
            }

            public BasicEnvironmentObject_BM(string elementName, Guid elementGuid, List<string> tags, GameElement_BM parentElement,
                string themeBundleName, string objectName, bool isStatic,
                float shadowThreshold, float shadowSmoothness, bool useWorldLight, Vector3 fakeLightDir)
                : base(elementName, elementGuid, tags, parentElement, themeBundleName, objectName, isStatic)
            {

                this.shadowThreshold = shadowThreshold;
                this.shadowSmoothness = shadowSmoothness;
                this.useWorldLight = useWorldLight;
                this.fakeLightDir = fakeLightDir;
            }

            public override void ExecuteBM()
            {
                matchedElement = BasicEnvironmentObject.GenerateElement(elementName, elementGuid, tags, false,
                    themeBundleName, objectName, GetElement(attachedElementGuid), isStatic,
                    shadowThreshold, shadowSmoothness, useWorldLight, fakeLightDir);
            }
        }
    }
}