CDN-CS stuff

extra/admin-api/Spacebar.Cdn/Program.cs

@@ -0,0 +1,66 @@
+using ImageMagick;
+using Spacebar.AdminApi.TestClient.Services;
+using Spacebar.AdminApi.TestClient.Services.Services;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Add services to the container.
+builder.Services.AddSingleton<IFileSource>(new ProxyFileSource("http://cdn.old.server.spacebar.chat"));
+builder.Services.AddSingleton<LruFileCache>(new LruFileCache(1*1024*1024*1024));
+builder.Services.AddSingleton<PixelArtDetectionService>();
+builder.Services.AddSingleton<DiscordImageResizeService>();
+
+builder.Services.AddControllers();
+// Learn more about configuring OpenAPI at https://aka.ms/aspnet/openapi
+builder.Services.AddOpenApi();
+
+var app = builder.Build();
+
+// Configure the HTTP request pipeline.
+if (app.Environment.IsDevelopment()) app.MapOpenApi();
+
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Use((context, next) => {
+    context.Response.Headers["Access-Control-Allow-Origin"] = "*";
+    context.Response.Headers["Access-Control-Allow-Methods"] = "GET, POST, PUT, DELETE, OPTIONS";
+    context.Response.Headers["Access-Control-Allow-Headers"] = "*, Authorization";
+    if (context.Request.Method == "OPTIONS") {
+        context.Response.StatusCode = 200;
+        return Task.CompletedTask;
+    }
+
+    return next();
+});
+
+// fallback to proxy in case we dont have a specific endpoint...
+app.MapFallback("{*_}",async context => {
+    var client = new StreamingHttpClient();
+    var requestMessage = new HttpRequestMessage(
+        new HttpMethod(context.Request.Method),
+        "http://cdn.old.server.spacebar.chat" + context.Request.Path + context.Request.QueryString
+    ) {
+        Content = new StreamContent(context.Request.Body)
+    };
+    Console.WriteLine(requestMessage.RequestUri);
+
+    foreach (var header in context.Request.Headers)
+        if (header.Key is not ("Accept-Encoding" or "Host"))
+            requestMessage.Headers.TryAddWithoutValidation(header.Key, header.Value.ToArray());
+
+    var responseMessage = await client.SendUnhandledAsync(requestMessage, CancellationToken.None);
+    context.Response.StatusCode = (int)responseMessage.StatusCode;
+
+    foreach (var header in responseMessage.Headers) context.Response.Headers[header.Key] = header.Value.ToArray();
+    foreach (var header in responseMessage.Content.Headers) context.Response.Headers[header.Key] = header.Value.ToArray();
+
+    await responseMessage.Content.CopyToAsync(context.Response.Body);
+});
+
+Console.WriteLine("Pre-initializing Magick.NET...");
+MagickNET.Initialize();
+StreamingHttpClient.LogRequests = false;
+
+app.Run();