support hot reload of plugin code in debug configuration

Application/Application.csproj

@@ -55,6 +55,7 @@
     <ProjectReference Include="..\Integrations\Cod\Integrations.Cod.csproj" />
     <ProjectReference Include="..\Integrations\Source\Integrations.Source.csproj" />
     <ProjectReference Include="..\Data\Data.csproj" />
+    <ProjectReference Include="..\PluginDebugReference\PluginDebugReference.csproj" Condition="'$(Configuration)'=='Debug'"/>
     <ProjectReference Include="..\SharedLibraryCore\SharedLibraryCore.csproj">
       <Private>true</Private>
     </ProjectReference>
@@ -73,8 +74,8 @@
     </None>
   </ItemGroup>
 
-  <Target Name="PreBuild" BeforeTargets="PreBuildEvent" Condition="'$(ConfigurationName)'=='Debug'">
+  <!--<Target Name="PreBuild" BeforeTargets="PreBuildEvent" Condition="'$(ConfigurationName)'=='Debug'">
     <Exec Command="powershell.exe $(ProjectDir)BuildScripts\PreBuild.ps1 $(SolutionDir) $(TargetDir)" />
-  </Target>
+  </Target>-->
   
 </Project>

Application/Main.cs

@@ -38,6 +38,9 @@ using ILogger = Microsoft.Extensions.Logging.ILogger;
 using IW4MAdmin.Plugins.Stats.Client.Abstractions;
 using IW4MAdmin.Plugins.Stats.Client;
 using Microsoft.Extensions.Hosting;
+#if DEBUG
+using PluginDebugReference;
+#endif
 using Refit;
 using SharedLibraryCore.Interfaces.Events;
 using Stats.Client.Abstractions;
@@ -129,6 +132,10 @@ namespace IW4MAdmin.Application
             Utilities.DefaultLogger = logger;
             logger.LogInformation("Begin IW4MAdmin startup. Version is {Version}", Version);
             
+    #if DEBUG
+            StrongReferencesLoader.Load();
+    #endif
+            
             try
             {
                 // do any needed housekeeping file/folder migrations

Application/Plugin/PluginImporter.cs

@@ -5,6 +5,9 @@ using System.Linq;
 using System.Reflection;
 using System.Text.RegularExpressions;
 using IW4MAdmin.Application.API.Master;
+#if DEBUG
+using Microsoft.Extensions.DependencyModel;
+#endif
 using Microsoft.Extensions.Logging;
 using SharedLibraryCore;
 using SharedLibraryCore.Configuration;
@@ -102,13 +105,27 @@ namespace IW4MAdmin.Application.Plugin
                 return (pluginTypes, commandTypes, configurationTypes);
             }
 
+#if DEBUG
+            var loadedAssemblies = AppDomain.CurrentDomain.GetAssemblies().Select(asm => asm.GetName().Name);
+            var references = DependencyContext.Default?.GetDefaultAssemblyNames().Select(x => x.Name) ?? [];
+            var validAssemblies = references.Except(loadedAssemblies)
+                .Where(asm => !asm.StartsWith("Microsoft"))
+                .Where(asm => !asm.StartsWith("System"))
+                .Distinct();
+            var reloadableAssemblies = validAssemblies.Select(Assembly.Load);
+#endif
+
             // we only want to load the most recent assembly in case of duplicates
-            var assemblies = dllFileNames.Select(Assembly.LoadFrom)
+            var assemblies = dllFileNames.Select(fileName => fileName).Select(Assembly.LoadFrom)
                 .Union(GetRemoteAssemblies())
+#if DEBUG
+                .Union(reloadableAssemblies)
+#endif
                 .GroupBy(assembly => assembly.FullName).Select(assembly =>
                     assembly.OrderByDescending(asm => asm.GetName().Version).First());
 
-            var eligibleAssemblyTypes = assemblies
+            var eligibleAssemblyTypes = assemblies.Concat(AppDomain.CurrentDomain.GetAssemblies()
+                    .Where(asm => !new[] { "IW4MAdmin", "SharedLibraryCore" }.Contains(asm.GetName().Name)))
                 .SelectMany(asm =>
                 {
                     try
@@ -122,7 +139,7 @@ namespace IW4MAdmin.Application.Plugin
                 }).Where(type =>
                     FilterTypes.Any(filterType => type.GetInterface(filterType.Name, false) != null) ||
                     (type.IsClass && FilterTypes.Contains(type.BaseType)));
-            
+
             foreach (var assemblyType in eligibleAssemblyTypes)
             {
                 var isPlugin =
@@ -193,7 +210,7 @@ namespace IW4MAdmin.Application.Plugin
 
             catch (Exception ex)
             {
-                _logger.LogWarning(ex,"Could not load remote scripts");
+                _logger.LogWarning(ex, "Could not load remote scripts");
                 return Enumerable.Empty<string>();
             }
         }

IW4MAdmin.sln

@@ -52,6 +52,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "ScriptPlugins", "ScriptPlug
 		Plugins\ScriptPlugins\ServerBanner.js = Plugins\ScriptPlugins\ServerBanner.js
 		Plugins\ScriptPlugins\ParserBOIII.js = Plugins\ScriptPlugins\ParserBOIII.js
 		Plugins\ScriptPlugins\ParserL4D2SM.js = Plugins\ScriptPlugins\ParserL4D2SM.js
+		Plugins\ScriptPlugins\ParserPlutoniumT6.js = Plugins\ScriptPlugins\ParserPlutoniumT6.js
+		Plugins\ScriptPlugins\ParserH2MMOD.js = Plugins\ScriptPlugins\ParserH2MMOD.js
 	EndProjectSection
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "AutomessageFeed", "Plugins\AutomessageFeed\AutomessageFeed.csproj", "{F5815359-CFC7-44B4-9A3B-C04BACAD5836}"
@@ -115,6 +117,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "GithubActions", "GithubActi
 		.github\workflows\shared_library_nuget.yml = .github\workflows\shared_library_nuget.yml
 	EndProjectSection
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "PluginDebugReference", "PluginDebugReference\PluginDebugReference.csproj", "{2EB30B9B-FEC4-4A30-A955-515D55D0555B}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -443,6 +447,30 @@ Global
 		{259824F3-D860-4233-91D6-FF73D4DD8B18}.Release|x86.Build.0 = Release|Any CPU
 		{259824F3-D860-4233-91D6-FF73D4DD8B18}.Prerelease|Any CPU.ActiveCfg = Prerelease|Any CPU
 		{259824F3-D860-4233-91D6-FF73D4DD8B18}.Prerelease|Any CPU.Build.0 = Prerelease|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|Mixed Platforms.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|Mixed Platforms.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|x64.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Debug|x86.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|Any CPU.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|Any CPU.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|Mixed Platforms.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|Mixed Platforms.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|x64.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|x64.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|x86.ActiveCfg = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Prerelease|x86.Build.0 = Debug|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|Any CPU.Build.0 = Release|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|Mixed Platforms.ActiveCfg = Release|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|Mixed Platforms.Build.0 = Release|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|x64.ActiveCfg = Release|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|x64.Build.0 = Release|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|x86.ActiveCfg = Release|Any CPU
+		{2EB30B9B-FEC4-4A30-A955-515D55D0555B}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

PluginDebugReference/PluginDebugReference.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Plugins\AutomessageFeed\AutomessageFeed.csproj" />
+      <ProjectReference Include="..\Plugins\LiveRadar\LiveRadar.csproj" />
+      <ProjectReference Include="..\Plugins\Login\Login.csproj" />
+      <ProjectReference Include="..\Plugins\Mute\Mute.csproj" />
+      <ProjectReference Include="..\Plugins\ProfanityDeterment\ProfanityDeterment.csproj" />
+      <ProjectReference Include="..\Plugins\Stats\Stats.csproj" />
+      <ProjectReference Include="..\Plugins\Welcome\Welcome.csproj" />
+    </ItemGroup>
+
+</Project>

PluginDebugReference/StrongReference.cs

@@ -0,0 +1,10 @@
+
+namespace PluginDebugReference;
+
+public static class StrongReferencesLoader
+{
+    public static void Load()
+    {
+      // only for explicit reference
+    }
+}