Sample mod project and modding bootstrap

Core/Utils/Watermark.cs

@@ -68,7 +68,7 @@ public class Watermark {
         sptConfig = _configServer.GetConfig<CoreConfig>(ConfigTypes.CORE);
     }
 
-    public void Initialize()
+    public virtual void Initialize()
     {
         var description = _watermarkLocale.GetDescription();
         var warning = _watermarkLocale.GetWarning();

ExampleOverrideMod/ExampleOverrideMod.csproj

@@ -0,0 +1,13 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <TargetFramework>net9.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <ProjectReference Include="..\Core\Core.csproj" />
+    </ItemGroup>
+
+</Project>

ExampleOverrideMod/WatermarkOverride.cs

@@ -0,0 +1,26 @@
+using Core.Annotations;
+using Core.Models.Utils;
+using Core.Servers;
+using Core.Services;
+using Core.Utils;
+
+namespace ExampleOverrideMod;
+
+[Injectable(InjectableTypeOverride = typeof(Watermark))]
+public class WatermarkOverride : Watermark
+{
+    public WatermarkOverride(
+        ILogger logger,
+        ConfigServer configServer,
+        LocalisationService localisationService,
+        WatermarkLocale watermarkLocale
+    ) : base(logger, configServer, localisationService, watermarkLocale)
+    {
+    }
+
+    public override void Initialize()
+    {
+        Console.WriteLine("This is a watermark mod override!");
+        base.Initialize();
+    }
+}

Server/HarmonyBootstrapper.cs

@@ -0,0 +1,24 @@
+using System.Reflection;
+
+namespace Server;
+
+public class HarmonyBootstrapper
+{
+    public static void LoadAllPatches(List<Assembly> assemblies)
+    {
+        /* TODO: Benched idea until someone can figure out how to make Harmony work on net9.0 runtime if even possible?
+        var hamony = new Harmony("SPT");
+        foreach (var assembly in assemblies)
+        {
+            try
+            {
+                hamony.PatchAll(assembly);
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e);
+            }
+        }
+        */
+    }
+}

Server/ModDllLoader.cs

@@ -0,0 +1,26 @@
+using System.Reflection;
+
+namespace Server;
+
+public class ModDllLoader
+{
+    private const string ModPath = "./user/mods/";
+    public static List<Assembly> LoadAllMods()
+    {
+        if (!Directory.Exists(ModPath))
+            Directory.CreateDirectory(ModPath);
+        var mods = new List<Assembly>();
+        foreach (var file in Directory.GetFiles(ModPath, "*.dll", SearchOption.AllDirectories))
+        {
+            try
+            {
+                mods.Add(Assembly.LoadFile(Path.GetFullPath(file)));
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e);
+            }
+        }
+        return mods;
+    }
+}

Server/Program.cs

@@ -1,6 +1,6 @@
-using Core.Annotations;
+using System.Reflection;
+using Core.Annotations;
 using Core.Context;
-using Core.Servers;
 using Core.Utils;
 
 namespace Server;
@@ -9,12 +9,13 @@ public static class Program
 {
     public static void Main(string[] args)
     {
+        var assemblies = ModDllLoader.LoadAllMods();
+        HarmonyBootstrapper.LoadAllPatches(assemblies);
         var builder = WebApplication.CreateBuilder(args);
 
         RegisterSptComponents(builder.Services);
-
-        // TODO: deal with modding overriding services here!
-
+        RegisterModOverrideComponents(builder.Services, assemblies);
+        
         try
         {
 
@@ -33,6 +34,13 @@ public static class Program
         }
     }
 
+    private static void RegisterModOverrideComponents(IServiceCollection builderServices, List<Assembly> assemblies)
+    {
+        // We get all the services from this assembly first, since mods will override them later
+        RegisterComponents(builderServices, assemblies.SelectMany(a => a.GetTypes())
+            .Where(type => Attribute.IsDefined(type, typeof(Injectable))));
+    }
+
     private static void RegisterComponents(IServiceCollection builderServices, IEnumerable<Type> types)
     {
         var groupedTypes = types.Select(t =>

server-csharp.sln

@@ -6,6 +6,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Core", "Core\Core.csproj",
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UnitTests", "UnitTests\UnitTests.csproj", "{6C0681F9-4013-4579-82DA-0A9297984FD3}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ExampleOverrideMod", "ExampleOverrideMod\ExampleOverrideMod.csproj", "{0B9E34E4-04E1-4644-B508-2A53D198F059}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -24,5 +26,9 @@ Global
 		{6C0681F9-4013-4579-82DA-0A9297984FD3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{6C0681F9-4013-4579-82DA-0A9297984FD3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{6C0681F9-4013-4579-82DA-0A9297984FD3}.Release|Any CPU.Build.0 = Release|Any CPU
+		{0B9E34E4-04E1-4644-B508-2A53D198F059}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{0B9E34E4-04E1-4644-B508-2A53D198F059}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{0B9E34E4-04E1-4644-B508-2A53D198F059}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{0B9E34E4-04E1-4644-B508-2A53D198F059}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 EndGlobal