import { readFile } from "node:fs/promises";

import path from "node:path";

import { UPLOADS_DIR, UPLOAD_NAME_RE, contentTypeFor } from "@/lib/uploads";

export async function GET(

  _request: Request,

  { params }: { params: Promise<{ name: string }> },

) {

  const { name } = await params;

  if (!UPLOAD_NAME_RE.test(name)) return new Response("Not found", { status: 404 });

  const type = contentTypeFor(name.split(".")[1] ?? "");

  if (!type) return new Response("Not found", { status: 404 });

  try {

    const buf = await readFile(path.join(UPLOADS_DIR, name));

    return new Response(new Uint8Array(buf), {

      headers: {

        "Content-Type": type,

        "Content-Length": String(buf.length),

        "Cache-Control": "public, max-age=31536000, immutable",

        "X-Content-Type-Options": "nosniff",

        "Content-Disposition": "inline",

      },

    });

  } catch {

    return new Response("Not found", { status: 404 });

  }

}