using RenderHeads.Media.AVProVideo;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using UnityEngine;

public class AVProValue : MonoBehaviour
{
    MediaPlayer mediaPlayer;

    /// <summary>
    /// 视频播放时长 
    /// </summary>
    double duration;

    /// <summary>
    /// 视频播放进度
    /// </summary>
    public float PlayValue;

    /// <summary>
    /// 视频是否加载完成并准备播放
    /// </summary>
    bool isLoaded = false;
    // Start is called before the first frame update

    [SerializeField]
    string VideoPath;
    private void OnEnable()
    {
        mediaPlayer = GetComponent<MediaPlayer>();
        if (mediaPlayer != null)
        {
            mediaPlayer.Events.AddListener(OnMediaEvent);
        }
    }
    void Start()
    {
        //duration = mediaPlayer.Info.GetDuration();
        bool isOpen = mediaPlayer.OpenMedia(MediaPathType.RelativeToStreamingAssetsFolder, VideoPath, true);
        //mediaPlayer.Control.Play();
    }

    private void OnMediaEvent(MediaPlayer mp, MediaPlayerEvent.EventType et, ErrorCode errorCode)
    {
        //Debug.Log($"触发事件：{et}，错误码：{errorCode}");
        switch (et)
        {
            //视频加载完成并准备好播放
            //case MediaPlayerEvent.EventType.ReadyToPlay:
            case MediaPlayerEvent.EventType.Unpaused:
                this.Log("视频加载完成并准备好播放");
                isLoaded = true;
                duration = mediaPlayer.Info.GetDuration();
                this.Error("这里得到的视频的时长为什么是：" + duration);
                break;
            case MediaPlayerEvent.EventType.Started:
                this.Error("正在加载视频");
                isLoaded = false;
                break;
            // 加载失败（如文件不存在、格式不支持等）
            case MediaPlayerEvent.EventType.Error:
                isLoaded = false;
                Debug.LogError($"视频加载失败！错误码：{errorCode}");
                break;

            // 视频卸载（如切换视频源时）
            case MediaPlayerEvent.EventType.Closing:
                isLoaded = false;
                Debug.Log("视频已卸载");
                break;
            default:
                break;
        }
    }

    /// <summary>
    /// 根据value控制视频播放进度
    /// </summary>
    public void PlayVideoAsValue()
    {
        double PlayTime = PlayValue * duration;
        if (isLoaded)
        {
            mediaPlayer.Control.Seek(PlayTime);
            //mediaPlayer.Control.Play();
        }
    }

    private void OnDisable()
    {
        isLoaded = false;
    }
}