import { AuthError, authenticateRequest } from "@/lib/auth/server";
import { CatalogError, listGateModels } from "@/lib/chat/catalog";

const noStoreHeaders = { "Cache-Control": "no-store" };

export async function GET(request: Request): Promise<Response> {
  try {
    await authenticateRequest(request);
    const authorization = request.headers.get("Authorization");
    if (!authorization) throw new AuthError();
    const models = await listGateModels(authorization, request.signal);
    return Response.json({ models }, { headers: noStoreHeaders });
  } catch (error) {
    const status =
      error instanceof AuthError ||
      (error instanceof CatalogError && error.reason === "unauthorized")
        ? 401
        : 503;
    return Response.json(
      { error: status === 401 ? "Unauthorized" : "Каталог моделей временно недоступен" },
      { status, headers: noStoreHeaders },
    );
  }
}