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

namespace GeneralTools
{
    public class AudioManager : SingletonBaseAttribute<AudioManager>
    {
        private AudioSource bgmSource;

        protected List<AudioSource> playingAudioList = new List<AudioSource>();

        private Dictionary<string, AudioClip> clipDict = new Dictionary<string, AudioClip>();

        private string thirdResPath;

        public override void IStart()
        {
            thirdResPath = DevicePath.StreamingAssetsPath + "/Audio/";
            Init();
            KeyDownManager.Instance.AddKeyDownAction(KeyCode.F4, () => { MuteBGM(); }, "静音/恢复BGM", false, 0);
        }
        public override void IOnApplicationQuit()
        {
            bgmSource.Stop();
            for (int i = 0; i < playingAudioList.Count; i++)
            {
                playingAudioList[i].Stop();
            }
            playingAudioList.Clear();
        }
        void Init()
        {
            //创建BGM组件
            if (gameObject.GetComponent<AudioSource>() == null)
            {
                bgmSource = gameObject.AddComponent<AudioSource>();
                bgmSource.loop = true;
            }
            else
            {
                bgmSource = gameObject.GetComponent<AudioSource>();
            }
            //读取音效 存入词典
            AudioClip[] clip = Resources.LoadAll<AudioClip>("Audio");
            for (int i = 0; i < clip.Length; i++)
            {
                AddClipToDict(clip[i], clip[i].name);
            }
            //加载外部音频
            LoadThirdRes();
        }
        void AddClipToDict(AudioClip clip, string url)
        {
            string clipName = Path.GetFileNameWithoutExtension(Path.GetFullPath(url).Replace(Path.GetFullPath(thirdResPath), ""));
            if (!clipDict.ContainsKey(clipName))
            {
                clipDict[clipName] = clip;
            }
            else
            {
                Debug.LogError("音频文件名:" + clipName + "  文件名重复");
            }
        }
        public void PlayBGM(AudioClip clip, float volume = 1.0f)
        {
            if (clip == null)
                return;
            if (!ConfigHelper.isAllowPlayBGM)
            {
                Debug.LogError("BGM设置为不播放");
                return;
            }
            bgmSource.Stop();
            bgmSource.clip = clip;
            bgmSource.loop = true;
            SetBGMVolume(volume);
            bgmSource.Play();
        }

        public void PlayBGM(string clipName, float volume = 1.0f)
        {
            if (!clipDict.ContainsKey(clipName))
            {
                Debug.LogError("未找到音乐名:" + clipName);
                return;
            }
            PlayBGM(clipDict[clipName], volume);
        }
        public void StopBGM()
        {
            bgmSource.Stop();
        }
        public void SetBGMVolume(float volume)
        {
            bgmSource.volume = volume;
        }
        public void MuteBGM()
        {
            bgmSource.mute = !bgmSource.mute;
        }
        public void MuteBGM(bool isMute)
        {
            bgmSource.mute = isMute;
        }
        public void PauseBgm()
        {
            if (bgmSource.clip == null)
                return;
            if (bgmSource.isPlaying)
            {
                bgmSource.Pause();
            }
            else
            {
                bgmSource.Play();
            }
        }
        public void PauseBgm(bool isPause)
        {
            if (isPause)
            {
                bgmSource.Pause();
            }
            else
            {
                bgmSource.Play();
            }
        }
        private void PlayShot(AudioClip clip, float volume = 1.0f)
        {
            if (playingAudioList.Count >= ConfigHelper.audioShotLimit)
            {
                Debug.LogError("同时播放音效数量超出上限");
                return;
            }
            CreateAudio(clip, volume);
        }
        public void PlayShot(string clipName, float volume = 1.0f)
        {
            if (!clipDict.ContainsKey(clipName))
            {
                Debug.LogError("未找到音效名:" + clipName);
                return;
            }
            PlayShot(clipDict[clipName], volume);
        }
        public void PlayShotOnlyOne(string clipName, float volume = 1.0f)
        {
            if (!playingAudioList.Exists(o => o.clip.name == clipName))
            {
                PlayShot(clipName, volume);
            }
        }
        public void PlayShotDelay(string clipName, float delayTime, float volume = 1.0f)
        {
            StartCoroutine(UtilityTool.DelayToInvokeDo(() =>
           {
               PlayShot(clipName, volume);
           }, delayTime));
        }
        private void CreateAudio(AudioClip clip, float volume)
        {
            GameObject gameObj = new GameObject();
            gameObj.name = clip.name;
            gameObj.transform.parent = transform;
            AudioSource newSource = gameObj.AddComponent<AudioSource>();
            newSource.clip = clip;
            newSource.loop = false;
            newSource.volume = volume;
            newSource.Play();
            playingAudioList.Add(newSource);
        }

        void Update()
        {
            if (playingAudioList.Count <= 0)
                return;
            for (int i = 0; i < playingAudioList.Count; i++)
            {
                if (!playingAudioList[i].isPlaying)
                {
                    AudioSource temp = playingAudioList[i];
                    playingAudioList.RemoveAt(i);
#if UNITY_2018_1_OR_NEWER
                    Destroy(temp.gameObject);
#else
                    DestroyObject(temp.gameObject);
#endif
                    i--;
                }
            }
        }
        void LoadThirdRes()
        {
#if !UNITY_2017_1_OR_NEWER
            return;
#endif
            if (!Directory.Exists(thirdResPath))
                return;
            //读取外部音效,默认StreamAssets/Audio
            // List<string> mp3Flies  = FileReader.GetPathAllFilesRoot(outDir, "*.mp3");
            List<string> oggFlies = FileReader.GetPathAllFilesRoot(thirdResPath, "*.ogg");
            List<string> wavFlies = FileReader.GetPathAllFilesRoot(thirdResPath, "*.wav");
            //for (int i = 0; i < mp3Flies.Count; i++)
            //{
            //    string savepath = mp3Flies[i].Replace(".mp3", ".wav");
            //    if (!File.Exists(savepath))  //MP3 转wav
            //    {
            //        FileStream stream = File.Open(mp3Flies[i], FileMode.Open);
            //        Mp3FileReader reader = new Mp3FileReader(stream);
            //        WaveFileWriter.CreateWaveFile(savepath, reader);
            //    }
            //}
            for (int i = 0; i < wavFlies.Count; i++)
            {
                WebRequestManager.Instance.GetAudioClip(wavFlies[i], AddClipToDict, AudioType.WAV);
            }
            for (int i = 0; i < oggFlies.Count; i++)
            {
                WebRequestManager.Instance.GetAudioClip(oggFlies[i], AddClipToDict, AudioType.OGGVORBIS);
            }
        }
    }
}