Initialize repo and add session changes (2025-09-08)

resources/js/guest/polling/usePollStats.ts

@@ -0,0 +1,39 @@
+import { useEffect, useRef, useState } from 'react';
+
+type Stats = { onlineGuests: number; tasksSolved: number; latestPhotoAt?: string };
+
+export function usePollStats(slug: string) {
+  const [data, setData] = useState<Stats | null>(null);
+  const [loading, setLoading] = useState(true);
+  const timer = useRef<number | null>(null);
+  const visible = typeof document !== 'undefined' ? document.visibilityState === 'visible' : true;
+
+  async function fetchOnce() {
+    try {
+      const res = await fetch(`/api/v1/events/${encodeURIComponent(slug)}/stats`, {
+        headers: { 'Cache-Control': 'no-store' },
+      });
+      if (res.status === 304) return;
+      const json = await res.json();
+      setData({ onlineGuests: json.online_guests ?? 0, tasksSolved: json.tasks_solved ?? 0, latestPhotoAt: json.latest_photo_at });
+    } finally {
+      setLoading(false);
+    }
+  }
+
+  useEffect(() => {
+    setLoading(true);
+    fetchOnce();
+    function schedule() {
+      if (!visible) return;
+      timer.current = window.setInterval(fetchOnce, 10_000);
+    }
+    schedule();
+    return () => {
+      if (timer.current) window.clearInterval(timer.current);
+    };
+  }, [slug, visible]);
+
+  return { loading, onlineGuests: data?.onlineGuests ?? 0, tasksSolved: data?.tasksSolved ?? 0 };
+}
+