zapishis-client/apps/web/providers/query.tsx

'use client';

import { toast } from '@repo/ui/components/ui/sonner';
// Since QueryClientProvider relies on useContext under the hood, we have to put 'use client' on top
import {
  isServer,
  MutationCache,
  QueryCache,
  QueryClient,
  QueryClientProvider,
} from '@tanstack/react-query';

function makeQueryClient() {
  return new QueryClient({
    defaultOptions: {
      queries: {
        // With SSR, we usually want to set some default staleTime
        // above 0 to avoid refetching immediately on the client
        staleTime: 60 * 1_000,
      },
    },
    mutationCache: new MutationCache({
      onError: (error_: unknown) => {
        const error = error_ as Error;
        toast.error('Ошибка при отправке данных: ' + error.message);
      },
    }),
    queryCache: new QueryCache({
      onError: (error_: unknown) => {
        const error = error_ as Error;
        toast.error('Ошибка при загрузке данных: ' + error.message);
      },
    }),
  });
}

let browserQueryClient: QueryClient | undefined;

export function QueryProvider({ children }: { readonly children: React.ReactNode }) {
  // NOTE: Avoid useState when initializing the query client if you don't
  //       have a suspense boundary between this and the code that may
  //       suspend because React will throw away the client on the initial
  //       render if it suspends and there is no boundary
  const queryClient = getQueryClient();

  return <QueryClientProvider client={queryClient}>{children}</QueryClientProvider>;
}

function getQueryClient() {
  if (isServer) {
    // Server: always make a new query client
    return makeQueryClient();
  } else {
    // Browser: make a new query client if we don't already have one
    // This is very important, so we don't re-make a new client if React
    // suspends during the initial render. This may not be needed if we
    // have a suspense boundary BELOW the creation of the query client
    if (!browserQueryClient) browserQueryClient = makeQueryClient();
    return browserQueryClient;
  }
}