import { readFile } from "node:fs/promises";
import path from "node:path";
import { SING_BOX_VERSION } from "@/lib/anytls";
import { createHash } from "node:crypto";
export const runtime = "nodejs";
export async function GET(
  request: Request,
  context: { params: Promise<{ arch: string }> },
) {
  const { arch } = await context.params;
  if (!["amd64", "arm64"].includes(arch))
    return new Response(null, { status: 404 });
  try {
    const bytes = await readFile(
      path.join(
        process.cwd(),
        "data/artifacts",
        `sing-box-${SING_BOX_VERSION}-linux-${arch}`,
      ),
    );
    const checksum = createHash("sha256").update(bytes).digest("hex");
    if (new URL(request.url).searchParams.has("sha256"))
      return new Response(checksum, {
        headers: { "Cache-Control": "no-store" },
      });
    return new Response(bytes, {
      headers: {
        "Content-Type": "application/octet-stream",
        "Cache-Control": "no-store",
        "X-Content-SHA256": checksum,
      },
    });
  } catch {
    return new Response(
      "尚未构建节点程序，请运行 scripts/build-sing-box.sh。",
      { status: 503 },
    );
  }
}