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

public enum AudioEnum
{
    BGM1,
    BGM2,
    UI,//UI按键
    UIDisable,//UI不可点击_错误
    BuffAppear,//翻书
    ChooseBuff,//选择buff后
    End,//游戏结束
    BossDie,//BOSS死亡
    AttackTower,//敌人攻击塔
    DragTower,//拖动宝石时
    PutTower,//放下宝石
    FireTAttack,//火攻击
    WaterTAttack,//水攻击
    WoodTAttack,//木攻击
    LightningSkill,//电技能
    FireSkill//火技能
}
public class AudioSourceManager : MonoBehaviour
{
    private static AudioSourceManager _ins;

    public static AudioSourceManager Ins
    {
        get { return _ins; }
    }

    private void Awake()
    {
        _ins = this;

        clipDic = new Dictionary<string, AudioClip>();

        audioSourceList = new List<AudioSource>();
        for (int i = 0; i < 5; i++)
        {
            audioSourceList.Add(gameObject.AddComponent<AudioSource>());
        }
    }

    private AudioSource audioSource;
    private List<AudioSource> audioSourceList = new List<AudioSource>();

    /// <summary>
    /// 跳过第一个，第一个用来播放背景音 获取一个空的组件
    /// </summary>
    /// <returns></returns>
    private AudioSource GetAudioSource()
    {
        for (int i = 1; i < audioSourceList.Count; i++)
        {
            if (!audioSourceList[i].isPlaying)
            {
                return audioSourceList[i];
            }
        }

        AudioSource tmpAudioSource = gameObject.AddComponent<AudioSource>();
        audioSourceList.Add(tmpAudioSource);
        return tmpAudioSource;
    }

    private AudioClip LoadAudioClip(string musicName)
    {
        if (clipDic.ContainsKey(musicName))
            return clipDic[musicName];
        else
        {
            AudioClip au = Resources.Load<AudioClip>("Music/" + musicName);
            clipDic.Add(musicName, au);
            return au;
        }

    }

    public void Play(AudioEnum en)
    {
        // Debug.Log("播放了音效："+en);
        switch (en)
        {
            case AudioEnum.BGM1:
                Play("BGM1", false);
                break;
            case AudioEnum.BGM2:
                Play("BGM2", false);
                break;
            case AudioEnum.UI:
                Play("UI按键", true);
                break;
            case AudioEnum.UIDisable:
                Play("不可点击_错误", true);
                break;
            case AudioEnum.BuffAppear:
                Play("翻书", true);
                break;
            case AudioEnum.ChooseBuff:
                StopOneShot("选择buff后", true);
                //Play("选择buff后", true);
                break;
            case AudioEnum.End:
                Play("游戏结束", true);
                break;
            case AudioEnum.BossDie:
                Play("BOSS死亡", true);
                break;
            case AudioEnum.AttackTower:
                Play("敌人攻击塔", true);
                break;
            case AudioEnum.DragTower:
                Play("拖动宝石时", true);
                break;
            case AudioEnum.PutTower:
                Play("放下宝石", true);
                break;
            case AudioEnum.FireTAttack:
                Play("火攻击", true, 0.5f);
                break;
            case AudioEnum.WaterTAttack:
                Play("水攻击", true, 0.5f);
                break;
            case AudioEnum.WoodTAttack:
                Play("木攻击", true, 0.5f);
                break;
            case AudioEnum.LightningSkill:
                Play("电技能", true);
                break;
            case AudioEnum.FireSkill:
                Play("火技能", true);
                break;


        }
    }


    Dictionary<string, AudioClip> clipDic;

    private void Play(string musicName, bool isOneShot, float volume = 1.0f)
    {
        AudioClip au = LoadAudioClip(musicName);
        AudioSource tmpAudioSource;
        //tmpAudioSource.volume = PlayerPrefs.GetFloat("BgmVal");

        if (isOneShot)
        {
            tmpAudioSource = GetAudioSource();
            tmpAudioSource.clip = au;
            tmpAudioSource.loop = false;

            //tmpAudioSource.PlayOneShot(au);//无法立刻暂停
            StartCoroutine(RemoAudio(tmpAudioSource, au));
        }
        else
        {
            tmpAudioSource = audioSourceList[0];
            tmpAudioSource.clip = null;
            tmpAudioSource.clip = au;
            tmpAudioSource.loop = true;
        }
        tmpAudioSource.Play();
        tmpAudioSource.volume = volume;
    }

    /// <summary>
    /// 销毁音效
    /// </summary>
    /// <param name="audioClip"></param>
    private IEnumerator RemoAudio(AudioSource tmpAudioSource, AudioClip au)
    {
        if (audioSourceList.Count > 5)
        {
            yield return new WaitForSeconds(au.length);
            audioSourceList.Remove(tmpAudioSource);
            Destroy(tmpAudioSource);
        }
        yield break;
    }


    /// <summary>
    /// 调整音效时更新音量
    /// </summary>
    public void UpdateAudioVal()
    {
        foreach (AudioSource val in audioSourceList)
        {
            //便利所有的Bgm ,设置音量
            if (val)
            {
                val.volume = PlayerPrefs.GetFloat("BgmVal");
            }

        }
    }

    /// <summary>
    /// 删除指定音效
    /// </summary>
    /// <param name="audioName">被删除的音乐</param>
    public void DeleteAudio(string audioName)
    {
        foreach (AudioSource val in audioSourceList)
        {
            if (val && val.clip.name == audioName)
            {
                audioSourceList.Remove(val);
                Destroy(val.gameObject);
                break;
            }
        }
    }

    /// <summary>
    /// 音乐暂停
    /// </summary>
    /// <param name="isStop">是否暂停</param>
    public void StopAudio(bool isStop)
    {
        foreach (AudioSource val in audioSourceList)
        {
            if (isStop && val)
            {
                val.Pause();
            }
            else if (val)
            {
                val.Play();
            }
        }
    }

    /// <summary>
    /// 判断当前音乐是否存在
    /// </summary>
    /// <param name="audioName">音乐名字</param>
    /// <returns></returns>
    private bool AudioIsTrue(string audioName)
    {
        foreach (AudioSource val in audioSourceList)
        {
            if (val && val.clip.name == audioName)
            {
                return true;
            }

        }
        return false;
    }

    /// <summary>
    /// 停止播放某一个音效
    /// </summary>
    /// <param name="audioName"></param>
    private void StopOneShot(string musicName, bool isOneShot)
    {
        foreach (AudioSource val in audioSourceList)
        {
            if (val && val.clip && val.clip.name == musicName)
            {
                val.Stop();
                val.clip = null;
                break;
            }
        }

        Play(musicName, isOneShot);
    }

}