CDN-CS: it works!!!

extra/admin-api/Spacebar.Cdn/Controllers/ImagesAndStickersController.cs

@@ -0,0 +1,41 @@
+using ArcaneLibs.Extensions.Streams;
+using Microsoft.AspNetCore.Mvc;
+using Spacebar.AdminApi.TestClient.Services.Services;
+using Spacebar.Cdn.Extensions;
+using Spacebar.Cdn.Services;
+using Spacebar.Interop.Cdn.Abstractions;
+
+namespace Spacebar.Cdn.Controllers;
+
+[ApiController]
+public class ImagesAndStickerController(LruFileCache lfc, IFileSource fs, CdnWorkerService cws) : ControllerBase {
+    [HttpGet("/stickers/{id}")]
+    [HttpGet("/stickers/{id}.{ext}")]
+    [HttpGet("/emojis/{id}")]
+    [HttpGet("/emojis/{id}.{ext}")]
+    public async Task<IActionResult> GetUserAvatar(string id, string ext = "png") {
+        DiscordImageResizeParams resizeParams = Request.GetResizeParams();
+        var cacheKey = Request.Path + resizeParams.ToSerializedName();
+        LruFileCache.Entry? entry;
+        if (!Request.Query.Any() || resizeParams.Passthrough) {
+            var original = await fs.GetFile(Request.Path.ToString().Replace("."+ext, ""));
+            entry = new LruFileCache.Entry() {
+                Data = original.Stream.ReadToEnd().ToArray(),
+                MimeType = original.MimeType
+            };
+        }
+        else
+            entry = await lfc.GetOrAdd(cacheKey, async () => {
+                var original = await fs.GetFile(Request.Path.ToString().Replace("."+ext, ""));
+                var res = await cws.GetRawClient("q8").GetAsync("/scale" + Request.Path.ToString().Replace("."+ext, "") + Request.QueryString);
+                var outStream = await res.Content.ReadAsStreamAsync();
+
+                return new LruFileCache.Entry() {
+                    Data = outStream.ReadToEnd().ToArray(),
+                    MimeType = res.Content.Headers.ContentType?.ToString() ?? original.MimeType
+                };
+            });
+
+        return new FileContentResult(entry.Data, entry.MimeType);
+    }
+}