import { isServer, QueryClient } from "@tanstack/react-query";

function makeQueryClient() {
  return new QueryClient({
    defaultOptions: {
      queries: {
        staleTime: 60 * 1000,
        gcTime: 5 * 60 * 1000,
        refetchOnWindowFocus: false,
        retry: 1,
      },
    },
  });
}

let browserQueryClient: QueryClient | undefined = undefined;

export function getQueryClient() {
  if (isServer) {
    // Server: fresh client per request so caches never leak between users.
    return makeQueryClient();
  }
  // Browser: single shared client so the cache survives route changes.
  if (!browserQueryClient) {
    browserQueryClient = makeQueryClient();
  }
  return browserQueryClient;
}