add econtrol gasstation view and logic

lib/controller/gasstations_controller.dart

@@ -0,0 +1,83 @@
+import 'package:flutter/material.dart';
+import 'package:geolocator/geolocator.dart';
+import 'package:get/get.dart';
+import '../models/econtrol_model.dart';
+import '../services/econtrol_service.dart';
+
+class GasstationsController extends GetxController {
+  final isLoading = false.obs;
+  final isLoadingLocation = false.obs;
+  final eControlData = <EControlModel>[].obs;
+
+  @override
+  void onInit() {
+    _loadStationInfosList();
+    super.onInit();
+  }
+
+  @override
+  void onReady() {}
+
+  @override
+  void onClose() {}
+
+  Future<void> _loadStationInfosList() async {
+    isLoading.value = true;
+    bool serviceEnabled;
+    if (eControlData.isNotEmpty) {
+      eControlData.clear();
+    }
+    final eControlService = EControlService();
+    LocationPermission permission;
+
+    try {
+      isLoadingLocation.value = true;
+
+      // 1. Prüfen, ob Standortdienste aktiviert sind
+      serviceEnabled = await Geolocator.isLocationServiceEnabled();
+      if (!serviceEnabled) {
+        return Future.error('Standortdienste sind deaktiviert.');
+      }
+
+      // 2. Berechtigungen prüfen
+      permission = await Geolocator.checkPermission();
+      if (permission == LocationPermission.denied) {
+        permission = await Geolocator.requestPermission();
+        if (permission == LocationPermission.denied) {
+          return Future.error('Berechtigung verweigert.');
+        }
+      }
+
+      // 3. Position abrufen
+      Position position = await Geolocator.getCurrentPosition(
+        locationSettings: const LocationSettings(
+          accuracy: LocationAccuracy.high,
+        ),
+      );
+
+      // 4. Standort über Backend-Proxy abrufen
+      var lat = position.latitude;
+      var lon = position.longitude;
+      // Simulate fetching data from an API or database
+      await eControlService.getEControlData(
+        lat,
+        lon,
+        'DIE',
+      );
+      eControlData.addAll(eControlService.eControlData);
+    } catch (e) {
+      Get.snackbar(
+        "Fehler",
+        "Standort konnte nicht abgerufen werden: $e",
+        snackPosition: SnackPosition.BOTTOM,
+        backgroundColor: Colors.red[100],
+        colorText: Colors.red[900],
+      );
+      print("Fehler beim Abrufen des Standorts: $e");
+    } finally {
+      isLoadingLocation.value = false;
+    }
+    isLoading.value = false;
+    update();
+  }
+}

lib/controller/home_controller.dart

@@ -1,3 +1,4 @@
+import 'package:flutter_tank_web_app/pages/gasstations_view.dart';
 import 'package:get/get.dart';
 
 import '../models/tank_model.dart';
@@ -105,4 +106,8 @@ class HomeController extends GetxController {
   void goToGraphPage() {
     Get.toNamed(GraphPage.namedRoute, arguments: listTankModel);
   }
+
+  void goToGasStations() {
+    Get.toNamed(GasstationsPage.namedRoute);
+  }
 }