using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using UnityStandardAssets.ImageEffects;
/* 组件-动物场景白天和夜晚切换 */
public class DayToNight : MonoBehaviour
{
    [SerializeField] Material daySkyboxMaterial;
    [SerializeField] Material nightSkyboxMaterial;
    [SerializeField] Camera[] cameras;
    void Awake()
    {
        if (ChallengeGameMode.IsChallengeWolf()) {
            EnterNight();
        } else {
            EnterDay();
        }
        // new GameObject("FPSTester").AddComponent<FPSTester>();
    }

    public void EnterDay()
    {
        RenderSettings.fogStartDistance = 25;
        RenderSettings.fogColor = new Color(124f/255, 177f/255, 221f/255);
        RenderSettings.ambientMode = UnityEngine.Rendering.AmbientMode.Flat;
        RenderSettings.ambientSkyColor = Color.white;
        RenderSettings.skybox = daySkyboxMaterial;
        foreach (Transform item in transform) item.gameObject.SetActive(false);
        transform.Find("DayElements").gameObject.SetActive(true);
        // SetFogCamera(false);
    }

    public void EnterNight()
    {
        //需要开一个新的场景，按以下配置来配置下场景并加入BuildSettings中，否则打包发布后代码切换以下雾霾效果会不生效。
        //个人推测，unity扫描到没使用到这种雾霾的场景，就把该雾霾的引擎代码在打包时剔除掉了
        // RenderSettings.fogStartDistance = 5;
        RenderSettings.fogMode = FogMode.Exponential;
        RenderSettings.fogDensity = 0.06f;
        RenderSettings.fogColor = new Color(37f/255, 52f/255, 63f/255);
        RenderSettings.ambientMode = UnityEngine.Rendering.AmbientMode.Flat;
        RenderSettings.ambientSkyColor = new Color(160f/255, 90f/255, 90f/255);
        RenderSettings.skybox = nightSkyboxMaterial;
        foreach (Transform item in transform) item.gameObject.SetActive(false);
        transform.Find("NightElements").gameObject.SetActive(true);
        transform.Find("NightElements/Cloud").gameObject.SetActive(false);
        // SetFogCamera(true);
    }

    public void SetFogCamera(bool setValue)
    {
        Component[] components = {
            cameras[0].GetComponent<VignetteAndChromaticAberration>(),
            cameras[0].GetComponent<ScreenSpaceAmbientObscurance>(),
            cameras[0].GetComponent<GlobalFog>()
        };
        foreach (var comp in components) {
            for (int i = 1; i < cameras.Length; i++) {
                Camera camera = cameras[i];
                CopyComponent(comp, camera.gameObject);
            }
        }
        foreach (var item in cameras)
        {
            item.GetComponent<VignetteAndChromaticAberration>().enabled = setValue;
            item.GetComponent<ScreenSpaceAmbientObscurance>().enabled = setValue;
            item.GetComponent<GlobalFog>().enabled = setValue;
        }
    }

    void CopyComponent(Component comp, GameObject dest) 
    {
        System.Type type = comp.GetType();   
        Component copy = dest.GetComponent(type);
        if (copy == null) {
            copy = dest.AddComponent(type);
        }
        System.Reflection.FieldInfo[] fields = type.GetFields();
        foreach (System.Reflection.FieldInfo field in fields)
        {   
            field.SetValue(copy, field.GetValue(comp));
        }
    }
}