using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using BigSpace.XRCore.Event;
using BigSpace.Logic;

public class CameraGradient : MonoBehaviour
{
    public GameObject cube;
    public MeshRenderer material;

    Color color;
    //bool isGoBlack = false;       //变黑
    //bool isGoTransparent = false; //透明
    

    ////计时相关
    //float waitTime = 2f;
    
    
    // Start is called before the first frame update
    void Start()
    {
        color = new Color(0, 0, 0, 0);
        GlobalEventMgr.Listen<bool,float>(GameEvent.EventChangeCameraTransparent, GameDataManage_EventChangeCameraTransparent);
    }

    // Update is called once per frame
    void Update()
    {
        //if (isGoBlack)
        //{
        //    //runTime += Time.deltaTime;
        //    color.a = runTime/ waitTime;
        //    material.materials[0].SetColor("_BaseColor", color);
        //    if (runTime >= waitTime)
        //    {
        //        color.a = 1;
        //        material.materials[0].SetColor("_BaseColor", color);
        //        isGoBlack = false;
        //        runTime = 0;
        //    }
        //}

        //if (isGoTransparent)
        //{
        //    runTime += Time.deltaTime;
        //    color.a = 1 - runTime/ waitTime;
        //    material.materials[0].SetColor("_BaseColor", color);
        //    if (runTime >= waitTime)
        //    {
        //        color.a = 0;
        //        material.materials[0].SetColor("_BaseColor", color);
        //        isGoTransparent = false;
        //        runTime = 0;
        //        cube.SetActive(false);
        //    }
        //}
    }

    private IEnumerator Fade(float startAlpha, float endAlpha, float duration)
    {
        float time = 0;
        while (time < duration)
        {
            time += Time.deltaTime;
            color.a = Mathf.Lerp(startAlpha, endAlpha, time / duration);
            material.materials[0].SetColor("_BaseColor", color);
            yield return null;
        }
        color.a = endAlpha;
        if(endAlpha==0)
            cube.SetActive(false);
    }

    //private IEnumerator Fade(float startAlpha, float endAlpha, float duration)
    //{
    //    float time = 0;
    //    while (time < duration)
    //    {
    //        time += Time.deltaTime;
    //        canvasGroup.alpha = Mathf.Lerp(startAlpha, endAlpha, time / duration);
    //        yield return null;
    //    }

    //    canvasGroup.alpha = endAlpha;
    //    fadeCompleteCallback?.Invoke();
    //    fadeCompleteCallback = null;
    //}


    private void GameDataManage_EventChangeCameraTransparent(bool isShow,float waitTime)
    {
        Debug.Log("Camera收到事件:"+isShow);
        if (isShow)
        {
            SetBlack();
        }
        else
        {
            SetTransparent();
            //StartCoroutine(WaitSet(waitTime));
        }
    }

    //IEnumerator WaitSet(float waitTime)
    //{
    //    yield return new WaitForSeconds(waitTime); //;等待执行
    //    SetTransparent();
    //}

    void SetBlack()
    {
        color.a = 0;
        material.materials[0].SetColor("_BaseColor", color);
        cube.SetActive(true);
        StartCoroutine(Fade(0,1,1.5f)); 
    }

    void SetTransparent()
    {
        color.a = 1;
        material.materials[0].SetColor("_BaseColor", color);
        cube.SetActive(true);
        StartCoroutine(Fade(1, 0, 1.5f));
    }
}