using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;
using UnityEngine.UI;
using UnityEngine.Video;
using UnityEngine.SceneManagement;
using System;
using UnityEngine.EventSystems;

public class VideoRawImage : MonoBehaviour
{
    //定义参数获取VideoPlayer组件和RawImage组件
    public string Url;
    public VideoPlayer VideoPlayer;

    private RawImage rawImage;

    public Toggle PlayerToggle;
    //public Button StopButton;
    public Button CloseButotn;
    public Slider ShowProgressSlider;
    public Slider ClickProgressSlider;
    //private bool isPlayState;
    // Use this for initialization

    void Awake()
    {

        //获取场景中对应的组件

        VideoPlayer = this.GetComponent<VideoPlayer>();

        rawImage = this.GetComponent<RawImage>();
        PlayerToggle.onValueChanged.AddListener(PlayerToggleChange);
        //StopButton.onClick.AddListener(StopClick);
        CloseButotn.onClick.AddListener(CloseButtonClick);
        ClickProgressSlider.onValueChanged.AddListener(ProgressChange);

    }

    private void Start()
    {
      
    }

    private void OnEnable()
    {
        VideoPlayer.url = Url;
        if (VideoPlayer.texture == null)
        {
            return;
        }
        VideoPlayer.isLooping = false;
        PlayerToggle.isOn = true;
        VideoPlayer.time = 0;
        rawImage.texture = VideoPlayer.texture;
        ClickProgressSlider.value = 0;
        ShowProgressSlider.value = 0;
        //VideoPlayer.Pause();
    }
    private void StopClick()
    {
        VideoPlayer.Stop();
    }

    private void OnDestroy()
    {
        PlayerToggle.onValueChanged.RemoveListener(PlayerToggleChange);
        CloseButotn.onClick.RemoveListener(CloseButtonClick);
        ClickProgressSlider.onValueChanged.RemoveListener(ProgressChange);
        //StopButton.onClick.RemoveListener(StopClick);
    }

    private void ProgressChange(float value)
    {
        if (VideoPlayer.texture == null)
        {
            return;
        }
        if (VideoPlayer.time >= VideoPlayer.length)
        {
            return;
        }
        if (value > 0.98)
        {
            return;
        }

        //PlayerToggle.isOn = false;
        ShowProgressSlider.value = value;
        VideoPlayer.time = VideoPlayer.length * value;
        StopAllCoroutines();
        StartCoroutine(StopSliderClick());
        //StartCoroutine(CheckValue());
    }
    IEnumerator StopSliderClick()
    {
        ClickProgressSlider.interactable = false;
        yield return new WaitForSeconds(1f);
        ClickProgressSlider.interactable = true;
    }
    IEnumerator CheckValue()
    {
        yield return new WaitForSeconds(0.5f);
        if (Mathf.Abs(ShowProgressSlider.value - ClickProgressSlider.value) > 0.05)
        {
            Debug.Log("报错卡住了");
            VideoPlayer.url = Url;
            rawImage.texture = VideoPlayer.texture;
            
            PlayerToggle.isOn = true;
            yield return new WaitForSeconds(0.1f);
            
            VideoPlayer.time = VideoPlayer.length * ClickProgressSlider.value;
            ShowProgressSlider.value = ClickProgressSlider.value;
            PlayerToggle.isOn = false;
        }
    }
    private void CloseButtonClick()
    {
        transform.parent.gameObject.SetActive(false);
    }
    

    private void PlayerToggleChange(bool value)
    {
        PlayerToggle.transform.Find("Play").gameObject.SetActive(!value);
        PlayerToggle.transform.Find("Stop").gameObject.SetActive(value);
        if (value)
        {
            if (Mathf.Abs(ShowProgressSlider.value - ClickProgressSlider.value) > 0.1)
            {
                VideoPlayer.url = Url;
                rawImage.texture = VideoPlayer.texture;
            }
            //ClickProgressSlider.value = ShowProgressSlider.value;
            //VideoPlayer.url = Url;
            VideoPlayer.Play();
        }
        else 
        {
            VideoPlayer.Pause();
            //ClickProgressSlider.value = ShowProgressSlider.value;
        }
        ClickProgressSlider.value = ShowProgressSlider.value;
        //isPlayState = value;
    }

    // Update is called once per frame

    void Update()
    {

        //如果videoPlayer没有对应的视频texture，则返回

        if (VideoPlayer.texture == null)
        {
            return;
        }

        //把VideoPlayerd的视频渲染到UGUI的RawImage

        rawImage.texture = VideoPlayer.texture;
        //Debug.Log(VideoPlayer.time);
        //Debug.Log(VideoPlayer.length);
        //if (PlayerToggle.isOn) 
        {
            if (VideoPlayer.time < VideoPlayer.length)
            {
                ShowProgressSlider.value = (float)VideoPlayer.time / (float)VideoPlayer.length;
                //ClickProgressSlider.value = ShowProgressSlider.value;
            }
            else
            {
                VideoPlayer.time = 0;
                ShowProgressSlider.value = 0;
                PlayerToggle.isOn = false;
            }
        }
       
    }

   
}