feat: Set default polyline visibility to true if not defined in localStorage

- Added logic to check if 'polylineVisible' exists in localStorage on page load.
- If not present, set the default value to 'true' to ensure polylines are displayed by default.
- Updated `setupPolylines` function to handle polyline visibility based on localStorage value.

.env.local

@@ -1,32 +1,32 @@
 #.env.local
 #je nach dem Mysql Server, ob localhost freigegeben ist oder die IP Adresse des Servers, manchmal die beide und manchmal nur eine
 
-DB_HOST=10.10.0.30
+#DB_HOST=10.10.0.13
-DB_USER=root
-DB_PASSWORD="root#$"
-DB_NAME=talas_v5
-DB_PORT=3306
-#########################
-
-NEXT_PUBLIC_BASE_URL="http://10.10.0.30/talas5/devices/"
-NEXT_PUBLIC_SERVER_URL="http://10.10.0.30"
-NEXT_PUBLIC_PROXY_TARGET="http://10.10.0.30"
-NEXT_PUBLIC_ONLINE_TILE_LAYER="http://10.10.0.30:3000/mapTiles/{z}/{x}/{y}.png"
-#########################
-
-
-#DB_HOST=10.10.0.70
 #DB_USER=root
 #DB_PASSWORD="root#$"
 #DB_NAME=talas_v5
 #DB_PORT=3306
+#########################
+
+#NEXT_PUBLIC_BASE_URL="http://10.10.0.13/talas5/devices/"
+#NEXT_PUBLIC_SERVER_URL="http://10.10.0.13"
+#NEXT_PUBLIC_PROXY_TARGET="http://10.10.0.13"
+#NEXT_PUBLIC_ONLINE_TILE_LAYER="http://10.10.0.13:3000/mapTiles/{z}/{x}/{y}.png"
+#########################
+
+
+DB_HOST=10.10.0.70
+DB_USER=root
+DB_PASSWORD="root#$"
+DB_NAME=talas_v5
+DB_PORT=3306
 
 #########################
 
-#NEXT_PUBLIC_BASE_URL="http://10.10.0.30/talas5/devices/"
+NEXT_PUBLIC_BASE_URL="http://10.10.0.30/talas5/devices/"
-#NEXT_PUBLIC_SERVER_URL="http://10.10.0.70"
+NEXT_PUBLIC_SERVER_URL="http://10.10.0.70"
-#NEXT_PUBLIC_PROXY_TARGET="http://10.10.0.70"
+NEXT_PUBLIC_PROXY_TARGET="http://10.10.0.70"
-#NEXT_PUBLIC_ONLINE_TILE_LAYER="http://10.10.0.13:3000/mapTiles/{z}/{x}/{y}.png"
+NEXT_PUBLIC_ONLINE_TILE_LAYER="http://10.10.0.13:3000/mapTiles/{z}/{x}/{y}.png"
 #########################
 
 #DB_HOST=192.168.10.168

utils/setupPolylines.js

@@ -47,7 +47,13 @@ export function enablePolylineEvents(polylines, lineColors) {
 }
 
 export const setupPolylines = (map, linePositions, lineColors, tooltipContents, setNewCoords, tempMarker, currentZoom, currentCenter, polylineVisible) => {
-  polylineVisible = localStorage.getItem("polylineVisible") === "true";
+  if (localStorage.getItem("polylineVisible") === null) {
+    localStorage.setItem("polylineVisible", "true"); // Standardwert setzen
+    polylineVisible = true; // Wert in der Funktion initialisieren
+  } else {
+    polylineVisible = localStorage.getItem("polylineVisible") === "true";
+  }
+
   if (!polylineVisible) {
     // Entferne alle Polylinien, wenn sie ausgeblendet werden sollen
     if (window.polylines) {