Implementing plugin loading for api server and client

Moonlight.ApiServer/Http/Controllers/PluginsStreamController.cs

@@ -0,0 +1,63 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.Extensions.Caching.Memory;
+using MoonCore.Exceptions;
+using MoonCore.Models;
+using Moonlight.ApiServer.Services;
+
+namespace Moonlight.ApiServer.Http.Controllers;
+
+[ApiController]
+[Route("api/pluginsStream")]
+public class PluginsStreamController : Controller
+{
+    private readonly PluginService PluginService;
+    private readonly IMemoryCache Cache;
+
+    public PluginsStreamController(PluginService pluginService, IMemoryCache cache)
+    {
+        PluginService = pluginService;
+        Cache = cache;
+    }
+
+    [HttpGet]
+    public Task<HostedPluginsManifest> GetManifest()
+    {
+        var assembliesMap = Cache.GetOrCreate("clientPluginAssemblies", entry =>
+        {
+            entry.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(15);
+
+            return PluginService.GetAssemblies("client");
+        })!;
+
+        var entrypoints = Cache.GetOrCreate("clientPluginEntrypoints", entry =>
+        {
+            entry.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(15);
+
+            return PluginService.GetEntrypoints("client");
+        })!;
+
+        return Task.FromResult(new HostedPluginsManifest()
+        {
+            Assemblies = assembliesMap.Keys.ToArray(),
+            Entrypoints = entrypoints
+        });
+    }
+
+    [HttpGet("stream")]
+    public async Task GetAssembly([FromQuery(Name = "assembly")] string assembly)
+    {
+        var assembliesMap = Cache.GetOrCreate("clientPluginAssemblies", entry =>
+        {
+            entry.AbsoluteExpirationRelativeToNow = TimeSpan.FromMinutes(15);
+
+            return PluginService.GetAssemblies("client");
+        })!;
+
+        if (assembliesMap.ContainsKey(assembly))
+            throw new HttpApiException("The requested assembly could not be found", 404);
+
+        var path = assembliesMap[assembly];
+
+        await Results.File(path).ExecuteAsync(HttpContext);
+    }
+}