added advertising

src/hooks/useAdImpressionTracking.js

@@ -0,0 +1,36 @@
+import { useEffect } from 'react';
+import { API_URL } from '../config/authConstants';
+import { getAdSessionId } from '../utils/adSession';
+import { apiFetch } from '../api/apiClient';
+
+export function useAdImpressionTracking(ref, advertisingId) {
+  useEffect(() => {
+    const node = ref.current;
+    if (!node || !advertisingId) return;
+
+    let sent = false;
+    const observer = new IntersectionObserver(
+      ([entry]) => {
+        if (!entry.isIntersecting || sent) return;
+        sent = true;
+        observer.disconnect();
+
+        const payload = JSON.stringify({
+          advertisingId,
+          sessionId: getAdSessionId(),
+        });
+
+        apiFetch(`${API_URL}/api/ads/impression`, {
+          method: 'POST',
+          headers: { 'Content-Type': 'application/json' },
+          body: payload,
+          keepalive: true, // отправка при уходе со страницы, как sendBeacon
+        }).catch(() => {});
+      },
+      { threshold: 0.25 }
+    );
+
+    observer.observe(node);
+    return () => observer.disconnect();
+  }, [ref, advertisingId]);
+}