feat: Extracted restoreMapSettings to mapUtils.js

Moved the restoreMapSettings function from MapComponent.js to mapUtils.js for better modularity and reusability. This change also helps in maintaining cleaner code and improving readability.

utils/mapUtils.js

@@ -1,3 +1,4 @@
+// /utils/mapUtils.js
 import L from "leaflet";
 
 export const redrawPolyline = (lineData, lineColors, tooltipContents, map) => {
@@ -61,3 +62,18 @@ export const saveLineData = (lineData) => {
       console.error("Fehler beim Speichern der Linienänderungen:", error);
     });
 };
+// Call this function on page load to restore zoom and center
+export const restoreMapSettings = (map) => {
+  const savedZoom = localStorage.getItem("mapZoom");
+  const savedCenter = localStorage.getItem("mapCenter");
+
+  if (savedZoom && savedCenter) {
+    try {
+      const centerCoords = JSON.parse(savedCenter);
+      map.setView(centerCoords, parseInt(savedZoom));
+    } catch (e) {
+      console.error("Error parsing stored map center:", e);
+      map.setView([53.111111, 8.4625], 12); // Standardkoordinaten und -zoom
+    }
+  }
+};