import { readBrandingFile } from "@/lib/branding";

const CONTENT_TYPES: Record<string, string> = {
  png: "image/png",
  jpg: "image/jpeg",
  jpeg: "image/jpeg",
  webp: "image/webp",
  svg: "image/svg+xml",
  ico: "image/x-icon",
  gif: "image/gif",
};

export async function GET(
  request: Request,
  { params }: { params: Promise<{ filename: string }> }
) {
  const { filename } = await params;
  const data = await readBrandingFile(filename);
  if (!data) return new Response("Not found", { status: 404 });

  const ext = filename.split(".").pop()?.toLowerCase() ?? "";
  const contentType = CONTENT_TYPES[ext] ?? "application/octet-stream";

  return new Response(new Uint8Array(data), {
    headers: {
      "Content-Type": contentType,
      // Dateinamen tragen bereits einen Date.now()-Suffix, ein neuer
      // Upload bekommt also automatisch einen neuen Namen.
      "Cache-Control": "public, max-age=31536000, immutable",
    },
  });
}