import { buildSubscriptionConfig, buildSubscriptionHeaders } from "@/lib/subscription";
import {
  getSubscriptionSettings,
  getUserBySubscriptionToken,
  listSubscriptionNodes,
} from "@/lib/store";

export async function GET(
  _request: Request,
  context: RouteContext<"/api/subscription/[token]/clash">,
) {
  const { token } = await context.params;
  const user = await getUserBySubscriptionToken(token);

  if (!user || !user.enabled) {
    return new Response("subscription not found", { status: 404 });
  }

  const [nodes, settings] = await Promise.all([
    listSubscriptionNodes(),
    getSubscriptionSettings(),
  ]);

  let body: string;

  try {
    body = buildSubscriptionConfig({ user, nodes, settings });
  } catch {
    return new Response("subscription secret unavailable", { status: 409 });
  }

  const profileName = user.subscription_label || settings.profileName || user.username;

  return new Response(body, {
    status: 200,
    headers: buildSubscriptionHeaders(user, profileName),
  });
}