import { QueryClient } from '@tanstack/svelte-query';

/**
 * App-wide QueryClient singleton. `+layout.svelte` wires it into the
 * provider; non-component code (Svelte actions, keyboard handlers) imports
 * it directly to read cached photo state and invalidate after mutations.
 */
export const queryClient = new QueryClient({
	defaultOptions: {
		queries: {
			staleTime: 30_000,
			retry: 1,
			// The indexer WebSocket (stores/indexer.svelte.ts) already
			// invalidates ['photos'] and friends on live changes, so a
			// window-focus refetch only adds a redundant full-timeline
			// re-render (visible flash) every time the tab regains focus.
			refetchOnWindowFocus: false
		}
	}
});