using System;
using System.Threading.Tasks;
using UnityEngine;
using UnityEngine.Video;

[RequireComponent(typeof(VideoPlayer))]
public class AudioPlayControl : MonoBehaviour
{
    public VideoClip startAudio;
    public VideoClip endAudio;

    private VideoPlayer player;

    public VideoClip[] mp4Clips;
    private int currentMP4Index = -1;
    public bool isPlaying = false;
    public Action OnMP4PlayFinished;

    private void Awake()
    {
        player = GetComponent<VideoPlayer>();
        player.playOnAwake = false;
        this.gameObject.SetActive(false);
    }
    public void ResetMP4Index()
    {
        this.currentMP4Index = -1;
    }
    private async Task PlayClipThenStop(VideoClip clip)
    {
        if (this == null || this.gameObject == null)
            return;
        player.clip = clip;
        this.gameObject.SetActive(true);
        player.Play();
        isPlaying = true;
        await Task.Delay((int)(1000 * player.clip.length));
        StopPlay();
        isPlaying = false;
    }
    public async Task PlayStartVideo()
    {
        await PlayClipThenStop(startAudio);
    }
    public async Task PlayEndVideo()
    {
        await PlayClipThenStop(endAudio);
    }

    public void StopPlay()
    {
        if (this == null || this.gameObject == null)
            return;
        isPlaying = false;
        player.Stop();
        this.gameObject.SetActive(false);
    }

    public bool IsCanPlayMP4()
    {
        if (currentMP4Index + 1 == mp4Clips.Length)
            return false;
        return true;
    }
    public async void PlayMP4()
    {
        currentMP4Index++;
        var needPlayClip = mp4Clips[currentMP4Index];
        await PlayClipThenStop(needPlayClip);
        OnMP4PlayFinished?.Invoke();
    }
}