polylines tooltip content

hooks/useFetchPoiData.js

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+// hooks/useFetchPoiData.js
+import { useState, useEffect } from "react";
+
+const useFetchPoiData = (url) => {
+  const [poiData, setPoiData] = useState([]);
+
+  useEffect(() => {
+    const fetchPoiData = async () => {
+      try {
+        const response = await fetch(url);
+        if (!response.ok) throw new Error("Network response was not ok");
+        const data = await response.json();
+        setPoiData(data);
+      } catch (error) {
+        console.error("Fehler beim Abrufen der poiData:", error);
+      }
+    };
+
+    fetchPoiData();
+  }, [url]);
+
+  return poiData;
+};
+
+export default useFetchPoiData;