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

namespace DarkTonic.MasterAudio
{
	public static class AudioResourceOptimizer
	{
		private static readonly Dictionary<string, List<AudioSource>> AudioResourceTargetsByName = new Dictionary<string, List<AudioSource>>(StringComparer.OrdinalIgnoreCase);

		private static readonly Dictionary<string, AudioClip> AudioClipsByName = new Dictionary<string, AudioClip>(StringComparer.OrdinalIgnoreCase);

		private static readonly Dictionary<string, List<AudioClip>> PlaylistClipsByPlaylistName = new Dictionary<string, List<AudioClip>>(5, StringComparer.OrdinalIgnoreCase);

		private static string _supportedLanguageFolder = string.Empty;

		public static void ClearAudioClips()
		{
			AudioClipsByName.Clear();
			AudioResourceTargetsByName.Clear();
		}

		public static string GetLocalizedDynamicSoundGroupFileName(SystemLanguage localLanguage, bool useLocalization, string resourceFileName)
		{
			if (!useLocalization)
			{
				return resourceFileName;
			}
			if (MasterAudio.Instance != null)
			{
				return GetLocalizedFileName(useLocalization, resourceFileName);
			}
			return localLanguage.ToString() + "/" + resourceFileName;
		}

		public static string GetLocalizedFileName(bool useLocalization, string resourceFileName)
		{
			if (!useLocalization)
			{
				return resourceFileName;
			}
			return SupportedLanguageFolder() + "/" + resourceFileName;
		}

		public static void AddTargetForClip(string clipName, AudioSource source)
		{
			if (!AudioResourceTargetsByName.ContainsKey(clipName))
			{
				AudioResourceTargetsByName.Add(clipName, new List<AudioSource> { source });
				return;
			}
			List<AudioSource> list = AudioResourceTargetsByName[clipName];
			AudioClip audioClip = null;
			for (int i = 0; i < list.Count; i++)
			{
				AudioClip clip = list[i].clip;
				if (!(clip == null))
				{
					audioClip = clip;
					break;
				}
			}
			if (audioClip != null)
			{
				source.clip = audioClip;
			}
			list.Add(source);
		}

		private static string SupportedLanguageFolder()
		{
			if (!string.IsNullOrEmpty(_supportedLanguageFolder))
			{
				return _supportedLanguageFolder;
			}
			SystemLanguage item = Application.systemLanguage;
			if (MasterAudio.Instance != null)
			{
				switch (MasterAudio.Instance.langMode)
				{
				case MasterAudio.LanguageMode.SpecificLanguage:
					item = MasterAudio.Instance.testLanguage;
					break;
				case MasterAudio.LanguageMode.DynamicallySet:
					item = MasterAudio.DynamicLanguage;
					break;
				}
			}
			if (MasterAudio.Instance.supportedLanguages.Contains(item))
			{
				_supportedLanguageFolder = item.ToString();
			}
			else
			{
				_supportedLanguageFolder = MasterAudio.Instance.defaultLanguage.ToString();
			}
			return _supportedLanguageFolder;
		}

		public static void ClearSupportLanguageFolder()
		{
			_supportedLanguageFolder = string.Empty;
		}

		private static void FinishRecordingPlaylistClip(string controllerName, AudioClip resAudioClip)
		{
			List<AudioClip> list;
			if (!PlaylistClipsByPlaylistName.ContainsKey(controllerName))
			{
				list = new List<AudioClip>(5);
				PlaylistClipsByPlaylistName.Add(controllerName, list);
			}
			else
			{
				list = PlaylistClipsByPlaylistName[controllerName];
			}
			list.Add(resAudioClip);
		}

		public static IEnumerator PopulateResourceSongToPlaylistControllerAsync(MusicSetting songSetting, string songResourceName, string playlistName, PlaylistController controller, PlaylistController.AudioPlayType playType)
		{
			ResourceRequest asyncRes = Resources.LoadAsync(songResourceName, typeof(AudioClip));
			while (!asyncRes.isDone)
			{
				yield return MasterAudio.EndOfFrameDelay;
			}
			AudioClip audioClip = asyncRes.asset as AudioClip;
			if (audioClip == null)
			{
				MasterAudio.LogWarning("Resource file '" + songResourceName + "' could not be located from Playlist '" + playlistName + "'.");
				yield break;
			}
			if (!AudioUtil.AudioClipWillPreload(audioClip))
			{
				MasterAudio.LogWarning("Audio Clip for Resource file '" + songResourceName + "' from Playlist '" + playlistName + "' has 'Preload Audio Data' turned off, which can cause audio glitches. Resource files should always Preload Audio Data. Please turn it on.");
			}
			audioClip.name = songResourceName;
			FinishRecordingPlaylistClip(controller.ControllerName, audioClip);
			controller.FinishLoadingNewSong(songSetting, audioClip, playType);
		}

		public static IEnumerator PopulateSourcesWithResourceClipAsync(string clipName, SoundGroupVariation variation, Action successAction, Action failureAction)
		{
			bool isWarmingCall = MasterAudio.IsWarming;
			if (AudioClipsByName.ContainsKey(clipName))
			{
				successAction?.Invoke();
				if (isWarmingCall)
				{
					DTMonoHelper.SetActive(variation.GameObj, isActive: false);
				}
				yield break;
			}
			ResourceRequest asyncRes = Resources.LoadAsync(clipName, typeof(AudioClip));
			while (!asyncRes.isDone)
			{
				yield return MasterAudio.EndOfFrameDelay;
			}
			AudioClip audioClip = asyncRes.asset as AudioClip;
			if (audioClip == null)
			{
				MasterAudio.LogError("Resource file '" + clipName + "' could not be located.");
				failureAction?.Invoke();
				if (isWarmingCall)
				{
					DTMonoHelper.SetActive(variation.GameObj, isActive: false);
				}
				yield break;
			}
			if (!AudioResourceTargetsByName.ContainsKey(clipName))
			{
				MasterAudio.LogError("No Audio Sources found to add Resource file '" + clipName + "'.");
				failureAction?.Invoke();
				if (isWarmingCall)
				{
					DTMonoHelper.SetActive(variation.GameObj, isActive: false);
				}
				yield break;
			}
			if (!AudioUtil.AudioClipWillPreload(audioClip))
			{
				MasterAudio.LogWarning("Audio Clip for Resource file '" + clipName + "' of Sound Group '" + variation.ParentGroup.GameObjectName + "' has 'Preload Audio Data' turned off, which can cause audio glitches. Resource files should always Preload Audio Data. Please turn it on.");
			}
			List<AudioSource> list = AudioResourceTargetsByName[clipName];
			for (int i = 0; i < list.Count; i++)
			{
				list[i].clip = audioClip;
			}
			if (!AudioClipsByName.ContainsKey(clipName))
			{
				AudioClipsByName.Add(clipName, audioClip);
			}
			successAction?.Invoke();
			if (isWarmingCall)
			{
				DTMonoHelper.SetActive(variation.GameObj, isActive: false);
			}
		}

		public static void UnloadPlaylistSongIfUnused(string controllerName, AudioClip clipToRemove)
		{
			if (clipToRemove == null || !PlaylistClipsByPlaylistName.ContainsKey(controllerName))
			{
				return;
			}
			List<AudioClip> list = PlaylistClipsByPlaylistName[controllerName];
			if (list.Contains(clipToRemove))
			{
				list.Remove(clipToRemove);
				if (!list.Contains(clipToRemove))
				{
					Resources.UnloadAsset(clipToRemove);
				}
			}
		}

		public static void DeleteAudioSourceFromList(string clipName, AudioSource source)
		{
			if (!AudioResourceTargetsByName.ContainsKey(clipName))
			{
				MasterAudio.LogError("No Audio Sources found for Resource file '" + clipName + "'.");
				return;
			}
			List<AudioSource> list = AudioResourceTargetsByName[clipName];
			list.Remove(source);
			if (list.Count == 0)
			{
				AudioResourceTargetsByName.Remove(clipName);
			}
		}

		public static void UnloadClipIfUnused(string clipName)
		{
			if (!AudioClipsByName.ContainsKey(clipName))
			{
				return;
			}
			List<AudioSource> list = new List<AudioSource>();
			if (AudioResourceTargetsByName.ContainsKey(clipName))
			{
				list = AudioResourceTargetsByName[clipName];
				for (int i = 0; i < list.Count; i++)
				{
					if (list[i].GetComponent<SoundGroupVariation>().IsPlaying)
					{
						return;
					}
				}
			}
			AudioClip assetToUnload = AudioClipsByName[clipName];
			for (int j = 0; j < list.Count; j++)
			{
				list[j].clip = null;
			}
			AudioClipsByName.Remove(clipName);
			Resources.UnloadAsset(assetToUnload);
		}
	}
}