using System.Collections.Generic;
using UnityEngine;

public class SoundManager
{
    AudioSource[] _audioSources = new AudioSource[(int)Define.Sound.MaxCount];
    Dictionary<string, AudioClip> _audioClips = new Dictionary<string, AudioClip>();
    
    public void Init()
    {
        GameObject root = GameObject.Find("@Sound");
        if (root == null)
            root = new GameObject { name = "@Sound" };
        Object.DontDestroyOnLoad(root);

        string[] soundNames = System.Enum.GetNames(typeof(Define.Sound));
        
        for (int i = 0; i < soundNames.Length -1; i++)
        {
            GameObject go = new GameObject { name = soundNames[i] };
            _audioSources[i] = go.AddComponent<AudioSource>();
            go.transform.parent = root.transform;
        }
        
        _audioSources[(int)Define.Sound.Bgm].loop = true;
    }

    // 이걸 해줘야 오디오 리소스 캐싱으로 인해서 메모리가 차는 문제를 해결할 수 있다.
    public void Clear()
    {
        foreach (AudioSource audioSource in _audioSources)
        {
            audioSource.clip = null;
            audioSource.Stop();
        }
        _audioClips.Clear();
    }
    
    public void Play(string path, Define.Sound type = Define.Sound.Effect, float pitch = 1.0f)
    {
        AudioClip audioClip = GetOrAddAudioClip(path, type);
        Play(audioClip, type, pitch);
    }
    
    public void Play(AudioClip audioClip, Define.Sound type = Define.Sound.Effect, float pitch = 1.0f)
    {
        if (audioClip == null)
        {
            Debug.LogError($"Sound not found");
            return;
        }
        
        if (type == Define.Sound.Bgm)
        {
            AudioSource audioSource = _audioSources[(int)Define.Sound.Bgm];
            if(audioSource.isPlaying) 
                audioSource.Stop();
            
            audioSource.pitch = pitch;
            audioSource.clip = audioClip;
            audioSource.Play();
        }
        else
        {
            AudioSource audioSource = _audioSources[(int)Define.Sound.Effect];
            audioSource.pitch = pitch;
            audioSource.PlayOneShot(audioClip);
        }
    }
    
    
    // 캐싱 기능을 위한 함수임 - 근데 위에 딕셔너리로 잡고 있어서 이게 메모리 이슈가 될 수 있으니 주의 해야함
    // Clear 함수를 해줘야 하는이유임
    AudioClip GetOrAddAudioClip(string path, Define.Sound type = Define.Sound.Effect)
    {
        
        if(path.Contains("Sounds/") == false)
            path = $"Sounds/{path}";
        
        AudioClip audioClip = null;
        
        if (type == Define.Sound.Bgm)
        {
            audioClip = Managers.Resource.Load<AudioClip>(path);
        }
        else
        {
            if (_audioClips.TryGetValue(path, out audioClip) == false)
            {
                audioClip = Managers.Resource.Load<AudioClip>(path);
                _audioClips.Add(path, audioClip);
            }
        }
        if (audioClip == null) Debug.LogError($"AudioClip Missing! {path}");
        return audioClip;
    }
}