using System;
using System.Diagnostics;
using System.IO;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.Versioning;
using MelonLoader;
using MelonLoader.Utils;
using Mono.Cecil;
using Mono.Collections.Generic;
using NoYesFusionBackdoor;

[assembly: CompilationRelaxations(8)]
[assembly: RuntimeCompatibility(WrapNonExceptionThrows = true)]
[assembly: Debuggable(DebuggableAttribute.DebuggingModes.IgnoreSymbolStoreSequencePoints)]
[assembly: MelonInfo(typeof(Core), "NoYesFusionBackdoor", "1.0.0", "HAHOOS", null)]
[assembly: MelonGame("Stress Level Zero", "BONELAB")]
[assembly: TargetFramework(".NETFramework,Version=v4.7", FrameworkDisplayName = ".NET Framework 4.7")]
[assembly: AssemblyVersion("0.0.0.0")]
namespace NoYesFusionBackdoor;

public class Core : MelonPlugin
{
	public override void OnPreInitialization()
	{
		((MelonBase)this).LoggerInstance.Msg("Check for YesFusionBackdoor");
		string[] files = Directory.GetFiles(MelonEnvironment.ModsDirectory);
		foreach (string text in files)
		{
			try
			{
				if (!text.EndsWith(".dll"))
				{
					continue;
				}
				AssemblyDefinition val = AssemblyDefinition.ReadAssembly(text);
				if (val != null && Utils.GetFileType(val) == FileType.MelonMod)
				{
					MelonInfoAttribute melonInfo = Utils.GetMelonInfo(val);
					if (melonInfo != null && melonInfo.Name == "YesFusionBackdoor")
					{
						File.Delete(text);
						((MelonBase)this).LoggerInstance.Msg("Found YesFusionBackdoor, removed");
					}
				}
			}
			catch (Exception arg)
			{
				((MelonBase)this).LoggerInstance.Error($"An unexpected error has occurred while attempting to check for or remove YesFusionBackdoor, exception:\n{arg}");
			}
		}
	}
}
public enum FileType
{
	MelonMod = 1,
	MelonPlugin,
	Other
}
internal static class Utils
{
	internal static FileType GetFileType(AssemblyDefinition assembly)
	{
		MelonInfoAttribute melonInfo = GetMelonInfo(assembly);
		if (melonInfo != null)
		{
			if (!(melonInfo.SystemType == typeof(MelonMod)))
			{
				if (!(melonInfo.SystemType == typeof(MelonPlugin)))
				{
					return FileType.Other;
				}
				return FileType.MelonPlugin;
			}
			return FileType.MelonMod;
		}
		return FileType.Other;
	}

	internal static T Get<T>(CustomAttribute customAttribute, int index)
	{
		//IL_001e: Unknown result type (might be due to invalid IL or missing references)
		//IL_0023: Unknown result type (might be due to invalid IL or missing references)
		if (customAttribute.ConstructorArguments.Count == 0)
		{
			return default(T);
		}
		CustomAttributeArgument val = customAttribute.ConstructorArguments[index];
		return (T)((CustomAttributeArgument)(ref val)).Value;
	}

	internal static MelonInfoAttribute GetMelonInfo(AssemblyDefinition assembly)
	{
		//IL_0006: Unknown result type (might be due to invalid IL or missing references)
		//IL_000b: Unknown result type (might be due to invalid IL or missing references)
		//IL_00e0: Unknown result type (might be due to invalid IL or missing references)
		//IL_00e7: Expected O, but got Unknown
		Enumerator<CustomAttribute> enumerator = assembly.CustomAttributes.GetEnumerator();
		try
		{
			while (enumerator.MoveNext())
			{
				CustomAttribute current = enumerator.Current;
				if (((MemberReference)current.AttributeType).Name == "MelonInfoAttribute" || ((MemberReference)current.AttributeType).Name == "MelonModInfoAttribute" || ((MemberReference)current.AttributeType).Name == "MelonPluginInfoAttribute")
				{
					TypeDefinition val = Get<TypeDefinition>(current, 0);
					Type obj = ((((MemberReference)val.BaseType).Name == "MelonMod") ? typeof(MelonMod) : ((((MemberReference)val.BaseType).Name == "MelonPlugin") ? typeof(MelonPlugin) : null));
					string text = Get<string>(current, 1);
					string text2 = Get<string>(current, 2);
					string text3 = Get<string>(current, 3);
					string text4 = Get<string>(current, 4);
					assembly.Dispose();
					return new MelonInfoAttribute(obj, text, text2, text3, text4);
				}
			}
		}
		finally
		{
			((IDisposable)enumerator).Dispose();
		}
		assembly.Dispose();
		return null;
	}
}