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using IllusionInjector.Logging;
using IllusionPlugin;
using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.IO;
using System.Linq;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
using System.Text;
namespace IllusionInjector
{
public static class PluginManager
{
#pragma warning disable CS0618 // Type or member is obsolete (IPlugin)
/// <summary>
/// Gets the list of loaded plugins and loads them if necessary.
/// </summary>
public static IEnumerable<IBeatSaberPlugin> BSPlugins
{
get
{
if(_bsPlugins == null)
{
LoadPlugins();
}
return _bsPlugins;
}
}
private static List<IBeatSaberPlugin> _bsPlugins = null;
public static IEnumerable<IPlugin> IPAPlugins
{
get
{
if (_ipaPlugins == null)
{
LoadPlugins();
}
return _ipaPlugins;
}
}
private static List<IPlugin> _ipaPlugins = null;
private static void LoadPlugins()
{
string pluginDirectory = Path.Combine(Environment.CurrentDirectory, "Plugins");
// Process.GetCurrentProcess().MainModule crashes the game and Assembly.GetEntryAssembly() is NULL,
// so we need to resort to P/Invoke
string exeName = Path.GetFileNameWithoutExtension(AppInfo.StartupPath);
Logger.log.Info(exeName);
_bsPlugins = new List<IBeatSaberPlugin>();
_ipaPlugins = new List<IPlugin>();
if (!Directory.Exists(pluginDirectory)) return;
string cacheDir = Path.Combine(pluginDirectory, ".cache");
if (!Directory.Exists(cacheDir))
{
Directory.CreateDirectory(cacheDir);
}
else
{
foreach (string plugin in Directory.GetFiles(cacheDir, "*"))
{
File.Delete(plugin);
}
}
//Copy plugins to .cache
string[] originalPlugins = Directory.GetFiles(pluginDirectory, "*.dll");
foreach (string s in originalPlugins)
{
string pluginCopy = Path.Combine(cacheDir, Path.GetFileName(s));
File.Copy(Path.Combine(pluginDirectory, s), pluginCopy);
}
//Load copied plugins
string[] copiedPlugins = Directory.GetFiles(cacheDir, "*.dll");
foreach (string s in copiedPlugins)
{
var result = LoadPluginsFromFile(s, exeName);
_bsPlugins.AddRange(result.Item1);
_ipaPlugins.AddRange(result.Item2);
}
// DEBUG
Logger.log.Info($"Running on Unity {UnityEngine.Application.unityVersion}");
Logger.log.Info("-----------------------------");
Logger.log.Info($"Loading plugins from {pluginDirectory} and found {_bsPlugins.Count}");
Logger.log.Info("-----------------------------");
foreach (var plugin in _bsPlugins)
{
Logger.log.Info($"{plugin.Name}: {plugin.Version}");
}
Logger.log.Info("-----------------------------");
}
private static Tuple<IEnumerable<IBeatSaberPlugin>, IEnumerable<IPlugin>> LoadPluginsFromFile(string file, string exeName)
{
List<IBeatSaberPlugin> bsPlugins = new List<IBeatSaberPlugin>();
List<IPlugin> ipaPlugins = new List<IPlugin>();
if (!File.Exists(file) || !file.EndsWith(".dll", true, null))
return new Tuple<IEnumerable<IBeatSaberPlugin>, IEnumerable<IPlugin>>(bsPlugins, ipaPlugins);
T OptionalGetPlugin<T>(Type t) where T : class
{
// use typeof() to allow for easier renaming (in an ideal world this compiles to a string, but ¯\_(ツ)_/¯)
if (t.GetInterface(typeof(T).Name) != null)
{
try
{
T pluginInstance = Activator.CreateInstance(t) as T;
string[] filter = null;
if (pluginInstance is IGenericEnhancedPlugin)
{
filter = ((IGenericEnhancedPlugin)pluginInstance).Filter;
}
if (filter == null || filter.Contains(exeName, StringComparer.OrdinalIgnoreCase))
return pluginInstance;
}
catch (Exception e)
{
Logger.log.Error($"Could not load plugin {t.FullName} in {Path.GetFileName(file)}! {e}");
}
}
return null;
}
try
{
Assembly assembly = Assembly.LoadFrom(file);
foreach (Type t in assembly.GetTypes())
{
IBeatSaberPlugin bsPlugin = OptionalGetPlugin<IBeatSaberPlugin>(t);
if (bsPlugin != null)
{
bsPlugins.Add(bsPlugin);
}
else
{
IPlugin ipaPlugin = OptionalGetPlugin<IPlugin>(t);
if (ipaPlugin != null)
{
ipaPlugins.Add(ipaPlugin);
}
}
}
}
catch (Exception e)
{
Logger.log.Error($"Could not load {Path.GetFileName(file)}! {e}");
}
return new Tuple<IEnumerable<IBeatSaberPlugin>, IEnumerable<IPlugin>>(bsPlugins, ipaPlugins);
}
public class AppInfo
{
[DllImport("kernel32.dll", CharSet = CharSet.Auto, ExactSpelling = false)]
private static extern int GetModuleFileName(HandleRef hModule, StringBuilder buffer, int length);
private static HandleRef NullHandleRef = new HandleRef(null, IntPtr.Zero);
public static string StartupPath
{
get
{
StringBuilder stringBuilder = new StringBuilder(260);
GetModuleFileName(NullHandleRef, stringBuilder, stringBuilder.Capacity);
return stringBuilder.ToString();
}
}
}
#pragma warning restore CS0618 // Type or member is obsolete (IPlugin)
}
}