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using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Diagnostics.Contracts;
using System.IO;
using ReClassNET.CodeGenerator;
using ReClassNET.Core;
using ReClassNET.DataExchange.ReClass;
using ReClassNET.Extensions;
using ReClassNET.Logger;
using ReClassNET.Native;
using ReClassNET.Nodes;
using ReClassNET.UI;
namespace ReClassNET.Plugins
{
internal sealed class PluginManager
{
private readonly List<PluginInfo> plugins = new List<PluginInfo>();
private readonly IPluginHost host;
public IEnumerable<PluginInfo> Plugins => plugins;
public PluginManager(IPluginHost host)
{
Contract.Requires(host != null);
this.host = host;
}
public void LoadAllPlugins(string path, ILogger logger)
{
Contract.Requires(path != null);
Contract.Requires(logger != null);
try
{
if (!Directory.Exists(path))
{
return;
}
var directory = new DirectoryInfo(path);
LoadPlugins(directory.GetFiles("*.dll", SearchOption.AllDirectories), logger, true);
LoadPlugins(directory.GetFiles("*.exe", SearchOption.AllDirectories), logger, true);
LoadPlugins(directory.GetFiles("*.so", SearchOption.AllDirectories), logger, false);
}
catch (Exception ex)
{
logger.Log(ex);
}
}
private void LoadPlugins(IEnumerable<FileInfo> files, ILogger logger, bool checkProductName)
{
// TODO: How to include plugin infos for unix files as they don't have embedded version info.
Contract.Requires(files != null);
Contract.Requires(logger != null);
foreach (var fi in files)
{
FileVersionInfo fvi;
try
{
fvi = FileVersionInfo.GetVersionInfo(fi.FullName);
if (checkProductName && fvi.ProductName != PluginInfo.PluginName && fvi.ProductName != PluginInfo.PluginNativeName)
{
continue;
}
}
catch
{
continue;
}
try
{
var pi = new PluginInfo(fi.FullName, fvi);
if (!pi.IsNative)
{
pi.Interface = CreatePluginInstance(pi.FilePath);
if (!pi.Interface.Initialize(host))
{
continue;
}
RegisterNodeInfoReaders(pi);
RegisterCustomNodeTypes(pi);
}
else
{
pi.NativeHandle = CreateNativePluginInstance(pi.FilePath);
Program.CoreFunctions.RegisterFunctions(
pi.Name,
new NativeCoreWrapper(pi.NativeHandle)
);
}
plugins.Add(pi);
}
catch (Exception ex)
{
logger.Log(ex);
}
}
}
public void UnloadAllPlugins()
{
foreach (var pi in plugins)
{
if (pi.Interface != null) // Exclude native plugins
{
DeregisterNodeInfoReaders(pi);
DeregisterCustomNodeTypes(pi);
}
pi.Dispose();
}
plugins.Clear();
}
private static Plugin CreatePluginInstance(string filePath)
{
Contract.Requires(filePath != null);
var type = Path.GetFileNameWithoutExtension(filePath);
type = type + "." + type + "Ext";
var handle = Activator.CreateInstanceFrom(filePath, type);
if (!(handle.Unwrap() is Plugin plugin))
{
throw new FileLoadException();
}
return plugin;
}
private static IntPtr CreateNativePluginInstance(string filePath)
{
Contract.Requires(filePath != null);
var handle = NativeMethods.LoadLibrary(filePath);
if (handle.IsNull())
{
throw new FileLoadException($"Failed to load native plugin: {Path.GetFileName(filePath)}");
}
return handle;
}
private static void RegisterNodeInfoReaders(PluginInfo pluginInfo)
{
Contract.Requires(pluginInfo != null);
var nodeInfoReaders = pluginInfo.Interface.GetNodeInfoReaders();
if (nodeInfoReaders == null || nodeInfoReaders.Count == 0)
{
return;
}
pluginInfo.NodeInfoReaders = nodeInfoReaders;
BaseNode.NodeInfoReader.AddRange(nodeInfoReaders);
}
private static void DeregisterNodeInfoReaders(PluginInfo pluginInfo)
{
Contract.Requires(pluginInfo != null);
if (pluginInfo.NodeInfoReaders == null)
{
return;
}
foreach (var reader in pluginInfo.NodeInfoReaders)
{
BaseNode.NodeInfoReader.Remove(reader);
}
}
private static void RegisterCustomNodeTypes(PluginInfo pluginInfo)
{
Contract.Requires(pluginInfo != null);
var customNodeTypes = pluginInfo.Interface.GetCustomNodeTypes();
if (customNodeTypes == null)
{
return;
}
if (customNodeTypes.NodeTypes == null || customNodeTypes.Serializer == null || customNodeTypes.CodeGenerator == null)
{
throw new ArgumentException(); // TODO
}
foreach (var nodeType in customNodeTypes.NodeTypes)
{
if (!nodeType.IsSubclassOf(typeof(BaseNode)))
{
throw new ArgumentException($"Type '{nodeType}' is not a valid node.");
}
}
pluginInfo.CustomNodeTypes = customNodeTypes;
NodeTypesBuilder.AddPluginNodeGroup(pluginInfo.Interface, customNodeTypes.NodeTypes);
CustomNodeSerializer.Add(customNodeTypes.Serializer);
CppCodeGenerator.Add(customNodeTypes.CodeGenerator);
}
private static void DeregisterCustomNodeTypes(PluginInfo pluginInfo)
{
Contract.Requires(pluginInfo != null);
if (pluginInfo.CustomNodeTypes == null)
{
return;
}
NodeTypesBuilder.RemovePluginNodeGroup(pluginInfo.Interface);
CustomNodeSerializer.Remove(pluginInfo.CustomNodeTypes.Serializer);
CppCodeGenerator.Remove(pluginInfo.CustomNodeTypes.CodeGenerator);
}
}
}