using System;
using System.Collections.Concurrent;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
using System.Security;
using System.Security.Permissions;
using System.Threading;
using BepInEx;
using BepInEx.Logging;
using Microsoft.CodeAnalysis;
using UnityEngine;
using sPEAKer.Scripts;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.Default | DebuggableAttribute.DebuggingModes.DisableOptimizations | DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints | DebuggableAttribute.DebuggingModes.EnableEditAndContinue)]
[assembly: TargetFramework(".NETStandard,Version=v2.1", FrameworkDisplayName = ".NET Standard 2.1")]
[assembly: AssemblyCompany("SpotifyModule")]
[assembly: AssemblyConfiguration("Debug")]
[assembly: AssemblyDescription("Spotify Module for PEAK")]
[assembly: AssemblyFileVersion("0.1.0.0")]
[assembly: AssemblyInformationalVersion("0.1.0")]
[assembly: AssemblyProduct("SpotifyModule")]
[assembly: AssemblyTitle("SpotifyModule")]
[assembly: SecurityPermission(SecurityAction.RequestMinimum, SkipVerification = true)]
[assembly: AssemblyVersion("0.1.0.0")]
[module: UnverifiableCode]
[module: RefSafetyRules(11)]
namespace Microsoft.CodeAnalysis
{
	[CompilerGenerated]
	[Embedded]
	internal sealed class EmbeddedAttribute : Attribute
	{
	}
}
namespace System.Runtime.CompilerServices
{
	[CompilerGenerated]
	[Embedded]
	[AttributeUsage(AttributeTargets.Module, AllowMultiple = false, Inherited = false)]
	internal sealed class RefSafetyRulesAttribute : Attribute
	{
		public readonly int Version;

		public RefSafetyRulesAttribute(int P_0)
		{
			Version = P_0;
		}
	}
}
namespace SpotifyModule
{
	[BepInPlugin("com.blockbyblock.SpotifyModule", "SpotifyModule", "1.0.0")]
	[BepInDependency(/*Could not decode attribute arguments.*/)]
	public class SpotifyPlugin : BaseUnityPlugin
	{
		internal static ManualLogSource Log;

		private LibrespotController _librespot;

		private AudioClip _streamingClip;

		private float _updateTimer = 0f;

		private bool _lastIsPlaying = false;

		private bool _isBuffering = true;

		private const int MinBufferSamples = 8820;

		private void Awake()
		{
			//IL_005e: Unknown result type (might be due to invalid IL or missing references)
			//IL_0068: Expected O, but got Unknown
			Log = ((BaseUnityPlugin)this).Logger;
			string directoryName = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location);
			string text = Path.Combine(directoryName, "librespot.exe");
			if (File.Exists(text))
			{
				_librespot = new LibrespotController(text, directoryName);
				_streamingClip = AudioClip.Create("SpotifyStream", 44100, 2, 44100, true, new PCMReaderCallback(OnAudioRead));
				_librespot.Start();
			}
		}

		private void Update()
		{
			_updateTimer += Time.deltaTime;
			if (_updateTimer >= 0.1f)
			{
				_updateTimer = 0f;
				MonitorAndSync();
			}
		}

		private void MonitorAndSync()
		{
			//IL_00f4: Unknown result type (might be due to invalid IL or missing references)
			//IL_00fa: Invalid comparison between Unknown and I4
			if (_librespot == null || !((Object)(object)AudioMaster.MixtapeAudioSource != (Object)null))
			{
				return;
			}
			bool flag = false;
			if (AudioMaster.LoadedAudioClips != null && AudioMaster.CurrentSongIndex >= 0 && AudioMaster.LoadedAudioClips.Count > AudioMaster.CurrentSongIndex)
			{
				AudioClip val = AudioMaster.LoadedAudioClips[AudioMaster.CurrentSongIndex];
				if ((Object)(object)val != (Object)null && (((Object)val).name.Contains("Spotify Stream") || ((Object)val).name.Contains("SpotifyStream")))
				{
					flag = true;
				}
			}
			bool flag2 = AudioMaster.MixtapeAudioSource.isPlaying && flag;
			if (flag && (Object)(object)AudioMaster.MixtapeAudioSource.clip != (Object)(object)_streamingClip)
			{
				try
				{
					AudioMaster.MixtapeAudioSource.clip = _streamingClip;
					AudioMaster.MixtapeAudioSource.loop = true;
					if ((int)AudioMaster.CurrentPlaybackState == 1 && !AudioMaster.MixtapeAudioSource.isPlaying)
					{
						AudioMaster.MixtapeAudioSource.Play();
					}
				}
				catch (Exception ex)
				{
					Log.LogError((object)ex.Message);
				}
			}
			if (flag2 != _lastIsPlaying)
			{
				_lastIsPlaying = flag2;
				if (!flag2)
				{
					_isBuffering = true;
				}
			}
		}

		private void OnAudioRead(float[] data)
		{
			if (_librespot == null)
			{
				Array.Clear(data, 0, data.Length);
				return;
			}
			if (_isBuffering)
			{
				if (_librespot.AudioQueue.Count < 8820)
				{
					Array.Clear(data, 0, data.Length);
					return;
				}
				_isBuffering = false;
			}
			for (int i = 0; i < data.Length; i++)
			{
				if (_librespot.AudioQueue.TryDequeue(out var result))
				{
					data[i] = result;
					continue;
				}
				_isBuffering = true;
				for (int j = i; j < data.Length; j++)
				{
					data[j] = 0f;
				}
				break;
			}
		}

		private void OnDestroy()
		{
			if (_librespot != null)
			{
				_librespot.Stop();
			}
		}
	}
	public class LibrespotController
	{
		private Process _librespotProcess;

		private Thread _readThread;

		private bool _isRunning;

		public ConcurrentQueue<float> AudioQueue = new ConcurrentQueue<float>();

		private string _exePath;

		private string _workingDir;

		public LibrespotController(string exePath, string workingDir)
		{
			_exePath = exePath;
			_workingDir = workingDir;
		}

		public void Start()
		{
			if (_isRunning)
			{
				return;
			}
			_isRunning = true;
			ProcessStartInfo startInfo = new ProcessStartInfo
			{
				FileName = _exePath,
				Arguments = "--name \"sPEAKer\" --backend pipe --initial-volume 100 --enable-volume-normalisation",
				UseShellExecute = false,
				RedirectStandardOutput = true,
				RedirectStandardError = true,
				RedirectStandardInput = true,
				CreateNoWindow = true,
				WorkingDirectory = _workingDir
			};
			try
			{
				_librespotProcess = new Process();
				_librespotProcess.StartInfo = startInfo;
				_librespotProcess.ErrorDataReceived += delegate
				{
				};
				_librespotProcess.Start();
				_librespotProcess.BeginErrorReadLine();
				_readThread = new Thread(ReadAudioStream)
				{
					IsBackground = true
				};
				_readThread.Start();
			}
			catch (Exception ex)
			{
				SpotifyPlugin.Log.LogError((object)ex.Message);
				_isRunning = false;
			}
		}

		public void SendControlCommand(string command)
		{
			if (_librespotProcess != null && !_librespotProcess.HasExited)
			{
				try
				{
					_librespotProcess.StandardInput.WriteLine(command);
					_librespotProcess.StandardInput.Flush();
				}
				catch (Exception ex)
				{
					SpotifyPlugin.Log.LogWarning((object)ex.Message);
				}
			}
		}

		private void ReadAudioStream()
		{
			try
			{
				using Stream stream = _librespotProcess.StandardOutput.BaseStream;
				byte[] array = new byte[4096];
				int num = 0;
				while (_isRunning && _librespotProcess != null && !_librespotProcess.HasExited)
				{
					if (AudioQueue.Count > 176400)
					{
						Thread.Sleep(50);
						continue;
					}
					int count = array.Length - num;
					int num2 = stream.Read(array, num, count);
					if (num2 <= 0)
					{
						Thread.Sleep(10);
						continue;
					}
					int num3 = num + num2;
					int i;
					for (i = 0; i + 1 < num3; i += 2)
					{
						short num4 = (short)(array[i] | (array[i + 1] << 8));
						float item = (float)num4 / 32768f;
						AudioQueue.Enqueue(item);
					}
					num = num3 - i;
					if (num > 0)
					{
						array[0] = array[i];
					}
				}
			}
			catch (Exception ex)
			{
				SpotifyPlugin.Log.LogError((object)ex.Message);
			}
		}

		public void Stop()
		{
			_isRunning = false;
			if (_librespotProcess != null && !_librespotProcess.HasExited)
			{
				try
				{
					_librespotProcess.Kill();
				}
				catch
				{
				}
			}
			_librespotProcess = null;
			_readThread = null;
		}
	}
}