using System.Collections.Generic;
using Sirenix.OdinInspector;
using UnityEngine;
using UnityEngine.Audio;
using UnityEngine.SceneManagement;

namespace BlueWater.Audios
{
    public class AudioManager : Singleton<AudioManager>
    {
        [Title("오디오 데이터")]
        [SerializeField]
        private BgmDataSo _bgmDataSo;
        
        [SerializeField]
        private SfxDataSo _sfxDataSo;
        
        [SerializeField]
        private int _sfxChannelCount = 32;
        
        [Title("오디오 믹서")]
        [SerializeField]
        private AudioMixer _audioMixer;
        
        [SerializeField]
        private AudioMixerGroup _masterMixerGroup;
        
        [SerializeField]
        private AudioMixerGroup _bgmMixerGroup;
        
        [SerializeField]
        private AudioMixerGroup _sfxMixerGroup;
        
        [Title("중복 사운드 처리")]
        [SerializeField, Range(0f, 1f)]
        private float _sfxMinInterval = 0.09f;
        
        private Dictionary<string, AudioClip> _bgmDictionary;
        private Dictionary<string, AudioClip> _sfxDictionary;
        
        private AudioSource _bgmAudioSource;
        private Dictionary<AudioSource, float> _sfxPitchDictionary;
        private Dictionary<string, float> _sfxPlayTimeDictionary;
        
        protected override void OnAwake()
        {
            InitializeDictionary();
            InitializeComponents();
            
            SceneManager.sceneLoaded += OnSceneLoaded;
        }

        private void OnDestroy()
        {
            SceneManager.sceneLoaded -= OnSceneLoaded;
        }
        
        private void OnSceneLoaded(Scene scene, LoadSceneMode mode)
        {
            StopBgm();
            StopSfxAll();
        }

        private void InitializeDictionary()
        {
            _bgmDictionary = new Dictionary<string, AudioClip>(_bgmDataSo.BgmDataList.Count);
            foreach (var element in _bgmDataSo.BgmDataList)
            {
                _bgmDictionary.Add(element.BgmName, element.Clip);
            }
            
            _sfxDictionary = new Dictionary<string, AudioClip>(_sfxDataSo.SfxDataList.Count);
            foreach (var element in _sfxDataSo.SfxDataList)
            {
                _sfxDictionary.Add(element.SfxName, element.Clip);
            }
            
            _sfxPlayTimeDictionary = new Dictionary<string, float>(_sfxDataSo.SfxDataList.Count);
        }

        private void InitializeComponents()
        {
            _bgmAudioSource = gameObject.AddComponent<AudioSource>();
            _bgmAudioSource.outputAudioMixerGroup = _bgmMixerGroup;
            _bgmAudioSource.loop = true;

            _sfxPitchDictionary = new Dictionary<AudioSource, float>(_sfxChannelCount);
            for (var i = 0; i < _sfxChannelCount; i++)
            {
                var sfxAudioSource = gameObject.AddComponent<AudioSource>();
                sfxAudioSource.outputAudioMixerGroup = _sfxMixerGroup;
                sfxAudioSource.loop = false;
                _sfxPitchDictionary[sfxAudioSource] = sfxAudioSource.pitch;
            }
        }

        public void PlayBgm(string bgmName)
        {
            if (_bgmDictionary.TryGetValue(bgmName, out var value))
            {
                _bgmAudioSource.clip = value;
                _bgmAudioSource.Play();
            }
            else
            {
                print("Bgm not found: " + bgmName);
            }
        }

        public void StopBgm()
        {
            _bgmAudioSource.Stop();
        }

        public void PlaySfx(string sfxName, bool loop = false, bool ignoreTimeScale = false, float? duration = null)
        {
            if (_sfxDictionary.TryGetValue(sfxName, out var value))
            {
                if (_sfxPlayTimeDictionary.TryGetValue(sfxName, out var lastPlayTime))
                {
                    if (Time.time - lastPlayTime < _sfxMinInterval)
                    {
                        return;
                    }
                }
                var availableSfxAudioSource = GetAvailableSfxAudioSource();
                availableSfxAudioSource.clip = value;
                availableSfxAudioSource.loop = loop;
                
                if (ignoreTimeScale)
                {
                    // Time.timeScale 영향을 받지 않는 효과음 처리
                    availableSfxAudioSource.pitch = duration.HasValue ? value.length / duration.Value : 1f;
                }
                else
                {
                    // Time.timeScale 적용
                    _sfxPitchDictionary[availableSfxAudioSource] = duration.HasValue ? value.length / duration.Value : 1f;
                    availableSfxAudioSource.pitch = _sfxPitchDictionary[availableSfxAudioSource] * Time.timeScale;
                }
                
                availableSfxAudioSource.Play();
                _sfxPlayTimeDictionary[sfxName] = Time.time;
            }
            else
            {
                print("Sfx not found: " + sfxName);
            }
        }

        public void StopSfx(string sfxName)
        {
            if (_sfxDictionary.TryGetValue(sfxName, out var clip))
            {
                foreach (var element in _sfxPitchDictionary.Keys)
                {
                    if (element.clip == clip && element.isPlaying)
                    {
                        element.Stop();
                    }
                }
            }
            else
            {
                Debug.LogWarning("Sfx not found: " + sfxName);
            }
        }

        public void StopSfxAll()
        {
            foreach (var element in _sfxPitchDictionary.Keys)
            {
                if (element.isPlaying)
                {
                    element.Stop();
                }
            }
        }
        
        private AudioSource GetAvailableSfxAudioSource()
        {
            foreach (var element in _sfxPitchDictionary.Keys)
            {
                if (!element.isPlaying)
                {
                    return element;
                }
            }

            // 모든 AudioSource가 사용 중이면 첫 번째 AudioSource를 재사용
            //return sfxPitchDictionary.Keys.GetEnumerator().Current;

            using var enumerator = _sfxPitchDictionary.Keys.GetEnumerator();
            enumerator.MoveNext();
            return enumerator.Current;
        }
        
        /// <summary>
        /// 0.0001 ~ 1값
        /// </summary>
        /// <param name="volume"></param>
        public void SetMasterVolume(float volume)
        {
            var newVolume = Mathf.Log10(volume) * 20f;
            _audioMixer.SetFloat("Master", newVolume);
        }

        public void SetBgmVolume(float volume)
        {
            var newVolume = Mathf.Log10(volume) * 20f;
            _audioMixer.SetFloat("Bgm", newVolume);
        }

        public void SetSfxVolume(float volume)
        {
            var newVolume = Mathf.Log10(volume) * 20f;
            _audioMixer.SetFloat("Sfx", newVolume);
        }
        
        public void SetPitchSfxAll(float pitch)
        {
            foreach (var element in _sfxPitchDictionary)
            {
                element.Key.pitch = element.Value * pitch;
            }
        }
    }
}