Started adding module service

I will probably change the api paths and a lot of other stuff i wrote today tomorrow :|

Moonlight.ApiServer/Http/Controllers/ClientPlugins/ClientPluginsController.cs

@@ -0,0 +1,37 @@
+using Microsoft.AspNetCore.Mvc;
+using Moonlight.ApiServer.Services;
+using Moonlight.Shared.Http.Responses.ClientPlugins;
+
+namespace Moonlight.ApiServer.Http.Controllers.ClientPlugins;
+
+[ApiController]
+[Route("api/clientPlugins")]
+public class ClientPluginsController : Controller
+{
+    private readonly ModuleService ModuleService;
+
+    public ClientPluginsController(ModuleService moduleService)
+    {
+        ModuleService = moduleService;
+    }
+
+    [HttpGet]
+    public async Task<ClientPluginsResponse> Get()
+    {
+        var dlls = ModuleService.Modules
+            .Where(x => x.Modules.ContainsKey("client"))
+            .SelectMany(x =>
+                x.Modules
+                    .FirstOrDefault(c => c.Key == "client")
+                    .Value
+                    .Select(y => x.Name + "." + y)
+            )
+            .ToArray();
+
+        return new()
+        {
+            CacheKey = "unset",
+            Dlls = dlls
+        };
+    }
+}

Moonlight.ApiServer/Models/ModuleModel.cs

@@ -0,0 +1,12 @@
+namespace Moonlight.ApiServer.Models;
+
+public class ModuleModel
+{
+    public string Name { get; set; }
+    public string Author { get; set; }
+    public string Version { get; set; }
+    public string? DonateUrl { get; set; }
+    public string? UpdateUrl { get; set; }
+
+    public Dictionary<string, List<string>> Modules { get; set; } = new();
+}

Moonlight.ApiServer/Services/ModuleService.cs

@@ -0,0 +1,74 @@
+using System.Text.Json;
+using MoonCore.Helpers;
+using Moonlight.ApiServer.Models;
+
+namespace Moonlight.ApiServer.Services;
+
+public class ModuleService
+{
+    private readonly ILogger<ModuleService> Logger;
+    private readonly Dictionary<string, ModuleModel> ModuleMeta = new();
+    private static string ModulePath = PathBuilder.Dir("storage", "modules");
+
+    public ModuleModel[] Modules => ModuleMeta.Values.ToArray();
+    
+    public ModuleService(ILogger<ModuleService> logger)
+    {
+        Logger = logger;
+    }
+
+    public void Load()
+    {
+        Logger.LogInformation("Loading modules");
+        
+        Directory.CreateDirectory(ModulePath);
+
+        foreach (var moduleDirectory in Directory.EnumerateDirectories(ModulePath))
+        {
+            var metaPath = PathBuilder.File(moduleDirectory, "meta.json");
+            
+            if (!File.Exists(metaPath))
+            {
+                Logger.LogWarning("No meta.json found in {folder}", moduleDirectory);
+                continue;
+            }
+
+            ModuleModel moduleModel;
+
+            try
+            {
+                var json = File.ReadAllText(metaPath);
+                moduleModel = JsonSerializer.Deserialize<ModuleModel>(json)!;
+            }
+            catch (Exception e)
+            {
+                Logger.LogError("An error occured while loading meta.json in {folder}: {e}", moduleDirectory, e);
+                continue;
+            }
+            
+            ModuleMeta.Add(moduleDirectory, moduleModel);
+        }
+        
+        Logger.LogInformation("Loaded {count} modules", ModuleMeta.Count);
+    }
+
+    public string[] GetModuleDlls(string moduleName, string section)
+    {
+        if (ModuleMeta.All(x => x.Value.Name != moduleName))
+            throw new ArgumentException($"No module with the name '{moduleName}' found");
+        
+        var moduleKvp = ModuleMeta
+            .FirstOrDefault(x => x.Value.Name == moduleName);
+
+        var module = moduleKvp.Value;
+
+        if (!module.Modules.ContainsKey(section))
+            return [];
+
+        var modulePaths = module.Modules[section].Select(
+            dllName => PathBuilder.File(ModulePath, moduleKvp.Key, "bin", section, dllName)
+        ).Where(File.Exists).ToArray();
+
+        return modulePaths;
+    }
+}

Moonlight.ApiServer/Startup.cs

@@ -1,4 +1,5 @@
 using System.Reflection;
+using System.Runtime.Loader;
 using System.Text.Json;
 using MoonCore.Authentication;
 using MoonCore.Exceptions;
@@ -16,6 +17,7 @@ using Moonlight.ApiServer.Http.Middleware;
 using Moonlight.ApiServer.Interfaces.Auth;
 using Moonlight.ApiServer.Interfaces.OAuth2;
 using Moonlight.ApiServer.Interfaces.Startup;
+using Moonlight.ApiServer.Services;
 using Moonlight.Shared.Http.Responses.OAuth2;
 
 namespace Moonlight.ApiServer;
@@ -25,7 +27,7 @@ public static class Startup
     public static async Task Main(string[] args)
         => await Run(args, []);
     
-    public static async Task Run(string[] args, Assembly[]? pluginAssemblies = null)
+    public static async Task Run(string[] args, Assembly[]? additionalAssemblies = null)
     {
         // Cry about it
 #pragma warning disable ASP0000
@@ -47,8 +49,6 @@ public static class Startup
 // Storage i guess
         Directory.CreateDirectory(PathBuilder.Dir("storage"));
 
-// TODO: Load plugin/module assemblies
-
         // Configure startup logger
         var startupLoggerFactory = new LoggerFactory();
 
@@ -64,6 +64,34 @@ public static class Startup
 
         var startupLogger = startupLoggerFactory.CreateLogger("Startup");
 
+        // Load plugin/modules
+        var moduleService = new ModuleService(startupLoggerFactory.CreateLogger<ModuleService>());
+        moduleService.Load();
+        
+        // Load api server module assemblies
+        var apiServerDlls = moduleService.Modules.SelectMany(
+            x => moduleService.GetModuleDlls(x.Name, "apiServer")
+        );
+
+        var apiServerModuleContext = new AssemblyLoadContext(null);
+
+        foreach (var apiServerDll in apiServerDlls)
+        {
+            try
+            {
+                apiServerModuleContext.LoadFromStream(File.OpenRead(
+                    apiServerDll
+                ));
+            }
+            catch (Exception e)
+            {
+                startupLogger.LogCritical("Unable to load dll {name} into context: {e}", apiServerDll, e);
+                throw;
+            }
+        }
+
+        var moduleAssemblies = apiServerModuleContext.Assemblies.ToArray();
+        
         // Configure startup interfaces
         var startupServiceCollection = new ServiceCollection();
 
@@ -87,10 +115,10 @@ public static class Startup
             // Configure assemblies to scan
             configuration.AddAssembly(typeof(Startup).Assembly);
             
-            if(pluginAssemblies != null)
+            if(additionalAssemblies != null)
-                configuration.AddAssemblies(pluginAssemblies);
+                configuration.AddAssemblies(additionalAssemblies);
             
-            //TODO: Load plugins from file
+            configuration.AddAssemblies(moduleAssemblies);
         });
 
 
@@ -128,7 +156,13 @@ public static class Startup
             }
         }
 
-        builder.Services.AddControllers();
+        var controllerBuilder = builder.Services.AddControllers();
+        
+        // Add current assemblies to the application part
+        foreach (var moduleAssembly in moduleAssemblies)
+            controllerBuilder.AddApplicationPart(moduleAssembly);
+
+        builder.Services.AddSingleton(moduleService);
         builder.Services.AddSingleton(config);
         builder.Services.AutoAddServices(typeof(Startup).Assembly);
         builder.Services.AddHttpClient();
@@ -144,10 +178,10 @@ public static class Startup
 
             configuration.AddAssembly(typeof(Startup).Assembly);
             
-            if(pluginAssemblies != null)
+            if(additionalAssemblies != null)
-                configuration.AddAssemblies(pluginAssemblies);
+                configuration.AddAssemblies(additionalAssemblies);
             
-            //TODO: Load plugins from file
+            configuration.AddAssemblies(moduleAssemblies);
         });
 
         var app = builder.Build();

Moonlight.Shared/Http/Responses/ClientPlugins/ClientPluginsResponse.cs

@@ -0,0 +1,7 @@
+namespace Moonlight.Shared.Http.Responses.ClientPlugins;
+
+public class ClientPluginsResponse
+{
+    public string[] Dlls { get; set; }
+    public string CacheKey { get; set; }
+}