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

public class LGB_SoundPlayer : MonoBehaviour
{
    public static LGB_SoundPlayer instance;
    public List<AudioClip> sfxs;
    public List<AudioClip> songs;
    public List<Sprite> buttonSprites;
    public float volume;

    private Button muteButton;
    private AudioSource thisAS;

    private void Awake()
    {
        muteButton = GetComponentInChildren<Button>();
        instance = this;
        thisAS = GetComponent<AudioSource>();
        if (songs.Count > 0 )
        {
            thisAS.clip = songs[0];
            thisAS.Play();
        }
        muteButton.onClick.AddListener(ToggleMute);

    }

    public void ToggleMute()
    {
        if (thisAS.volume == 0)
        {
            thisAS.volume = volume;
            muteButton.image.sprite = buttonSprites[0];
        }
        else
        {
            thisAS.volume = 0;
            muteButton.image.sprite = buttonSprites[1];
        }
    }

    public void PlaySfx(int  n)
    {
        thisAS.PlayOneShot(sfxs[n]);
    }

    public void PlayMusic(int n)
    {
        if (thisAS.isPlaying)
        {
            DoChangeMusic(n);
        }
        else
        {
            thisAS.clip = songs[n];
            thisAS.Play();
        }
    }

    IEnumerator DoChangeMusic(int n)
    {
        yield return DoFadeOut();
        thisAS.clip = songs[n];
        thisAS.Play();
        yield return DoFadeIn();
    }

    IEnumerator DoFadeIn()
    {
        for (float i = 0; i < volume; i+= 0.1f)
        {
            thisAS.volume = i;
            yield return new WaitForSecondsRealtime(.1f);
        }
        thisAS.volume = volume;
    }

    IEnumerator DoFadeOut()
    {
        for (float i = volume; i > 0; i += 0.1f)
        {
            thisAS.volume = i;
            yield return new WaitForSecondsRealtime(.1f);
        }
        thisAS.volume = 0;
    }
}