using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class MusicLoopController : MonoBehaviour
{
    [SerializeField] private GameObject FirstLoopTrack;
    [SerializeField] private GameObject OtherLoopsTrack;

    private AudioSource FirstLoopAudio;
    private AudioSource OtherLoopsAudio;

    private void Awake()
    {
        FirstLoopAudio = FirstLoopTrack.GetComponent<AudioSource>();
        OtherLoopsAudio = OtherLoopsTrack.GetComponent<AudioSource>();
    }

    private void OnEnable()
    {
        FirstLoopAudio.Play();
        OtherLoopsAudio.PlayDelayed(FirstLoopAudio.clip.length);
    }

    public void ResumePlaying()
    {
        OtherLoopsAudio.Play();
    }

    public void FadeOut(float fadeTime)
    {
        //TODO Fade out the sound then stop both clips
        StartCoroutine(DecreaseVolume(fadeTime));
    }

    private IEnumerator DecreaseVolume(float fadeTime)
    {
        float startVolume = FirstLoopAudio.volume;
        while(FirstLoopAudio.volume > 0)
        {
            FirstLoopAudio.volume -= startVolume * Time.deltaTime / fadeTime;
            OtherLoopsAudio.volume -= startVolume * Time.deltaTime / fadeTime;

            yield return null;
        }
        FirstLoopAudio.Stop();
        OtherLoopsAudio.Stop();
        FirstLoopAudio.volume = startVolume;
        OtherLoopsAudio.volume = startVolume;
    }
}