58 lines
1.5 KiB
TypeScript
58 lines
1.5 KiB
TypeScript
import React from 'react';
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import { fetchEventStats } from '../services/statsApi';
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import type { EventStats } from '../services/eventApi';
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const defaultStats: EventStats = { onlineGuests: 0, tasksSolved: 0, latestPhotoAt: null };
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export function usePollStats(eventToken: string | null, intervalMs = 10000) {
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const [stats, setStats] = React.useState<EventStats>(defaultStats);
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const [loading, setLoading] = React.useState<boolean>(Boolean(eventToken));
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const [error, setError] = React.useState<string | null>(null);
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React.useEffect(() => {
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if (!eventToken) {
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setStats(defaultStats);
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setLoading(false);
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setError(null);
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return;
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}
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let active = true;
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let timer: number | null = null;
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const poll = async () => {
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if (document.visibilityState === 'hidden') {
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timer = window.setTimeout(poll, intervalMs);
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return;
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}
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try {
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setLoading(true);
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const next = await fetchEventStats(eventToken);
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if (!active) return;
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setStats(next);
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setError(null);
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} catch (err) {
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if (!active) return;
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setError(err instanceof Error ? err.message : 'Failed to load stats');
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} finally {
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if (active) {
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setLoading(false);
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timer = window.setTimeout(poll, intervalMs);
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}
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}
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};
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poll();
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return () => {
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active = false;
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if (timer) {
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window.clearTimeout(timer);
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}
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};
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}, [eventToken, intervalMs]);
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return { stats, loading, error } as const;
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}
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