fertig bis auf Tankstellen und Graph

lib/controller/edit_controller.dart

@@ -0,0 +1,247 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_tank_web_app/pages/home_view.dart';
+import 'package:get/get.dart';
+import 'package:geolocator/geolocator.dart';
+
+import '../models/tank_model.dart';
+import '../services/appwrite_service.dart';
+
+class EditController extends GetxController {
+  final AppwriteService appwriteService = AppwriteService();
+
+  // Form controllers
+  final dateController = TextEditingController();
+  final odometerController = TextEditingController();
+  final litersController = TextEditingController();
+  final pricePerLiterController = TextEditingController();
+  final locationController = TextEditingController();
+
+  // Observable states
+  final isLoading = false.obs;
+  final isNewEntry = true.obs;
+  final calculatedTotal = '0.00'.obs;
+  final isLoadingLocation = false.obs;
+
+  TankModel? editingTankModel;
+
+  @override
+  void onInit() {
+    super.onInit();
+
+    // Check if we're editing or creating new
+    if (Get.arguments != null) {
+      editingTankModel = Get.arguments as TankModel;
+      isNewEntry.value = false;
+      _loadExistingData();
+    } else {
+      isNewEntry.value = true;
+      _setDefaultDate();
+      _requestLocation();
+    }
+
+    // Add listeners for automatic calculation
+    litersController.addListener(_calculateTotal);
+    pricePerLiterController.addListener(_calculateTotal);
+  }
+
+  void _loadExistingData() {
+    dateController.text = editingTankModel!.szDate;
+    odometerController.text = editingTankModel!.szOdometer;
+    litersController.text = editingTankModel!.szLiters;
+    pricePerLiterController.text = editingTankModel!.szPricePerLiter;
+    locationController.text = editingTankModel!.szLocation;
+    calculatedTotal.value = editingTankModel!.szPriceTotal;
+  }
+
+  void _setDefaultDate() {
+    final now = DateTime.now();
+    dateController.text =
+        '${now.year}-${now.month.toString().padLeft(2, '0')}-${now.day.toString().padLeft(2, '0')}';
+  }
+
+  Future<void> _requestLocation() async {
+    bool serviceEnabled;
+    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;
+
+      print('📍 Verwende Backend-Proxy für Geocoding...');
+      String location = await appwriteService.geocodeLocation(lat, lon);
+      locationController.text = location;
+
+      // Info anzeigen basierend auf Ergebnis
+      if (location.startsWith('Lat:')) {
+        Get.snackbar(
+          'Hinweis',
+          'Adresse konnte nicht abgerufen werden. Koordinaten gespeichert.',
+          snackPosition: SnackPosition.BOTTOM,
+          backgroundColor: Colors.orange[100],
+          colorText: Colors.orange[900],
+          duration: const Duration(seconds: 3),
+        );
+      } else {
+        Get.snackbar(
+          'Erfolg',
+          'Standort: $location',
+          snackPosition: SnackPosition.BOTTOM,
+          backgroundColor: Colors.green[100],
+          colorText: Colors.green[900],
+          duration: const Duration(seconds: 2),
+        );
+      }
+    } 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: $e");
+      locationController.text = '';
+    } finally {
+      isLoadingLocation.value = false;
+    }
+  }
+
+  void _calculateTotal() {
+    final liters = double.tryParse(litersController.text) ?? 0.0;
+    final pricePerLiter = double.tryParse(pricePerLiterController.text) ?? 0.0;
+    calculatedTotal.value = (liters * pricePerLiter).toStringAsFixed(2);
+  }
+
+  Future<void> selectDate(BuildContext context) async {
+    final DateTime? picked = await showDatePicker(
+      context: context,
+      initialDate: DateTime.now(),
+      firstDate: DateTime(2020),
+      lastDate: DateTime.now(),
+      builder: (context, child) {
+        return Theme(
+          data: ThemeData.light().copyWith(
+            colorScheme: ColorScheme.light(
+              primary: Colors.blueGrey[700]!,
+              onPrimary: Colors.white,
+            ),
+          ),
+          child: child!,
+        );
+      },
+    );
+
+    if (picked != null) {
+      dateController.text =
+          '${picked.year}-${picked.month.toString().padLeft(2, '0')}-${picked.day.toString().padLeft(2, '0')}';
+    }
+  }
+
+  Future<void> saveTankEntry() async {
+    if (!_validateForm()) {
+      Get.snackbar(
+        'Validierungsfehler',
+        'Bitte füllen Sie alle Pflichtfelder aus',
+        snackPosition: SnackPosition.BOTTOM,
+        backgroundColor: Colors.red[100],
+        colorText: Colors.red[900],
+      );
+      return;
+    }
+
+    isLoading.value = true;
+
+    try {
+      final userId = await appwriteService.getCurrentUserId();
+      if (userId == null) {
+        throw Exception('Benutzer nicht eingeloggt');
+      }
+
+      final data = {
+        'userId': userId,
+        'date': dateController.text,
+        'odometer': odometerController.text,
+        'liters': litersController.text,
+        'pricePerLiter': pricePerLiterController.text,
+        'location': locationController.text,
+      };
+
+      bool success;
+      if (isNewEntry.value) {
+        success = await appwriteService.createDocumentInCollection(data);
+      } else {
+        success = await appwriteService.updateDocumentInCollection(
+          editingTankModel!.szDocumentId,
+          data,
+        );
+      }
+
+      if (success) {
+        Get.snackbar(
+          'Erfolgreich',
+          isNewEntry.value
+              ? 'Tankeintrag erstellt'
+              : 'Tankeintrag aktualisiert',
+          snackPosition: SnackPosition.BOTTOM,
+          backgroundColor: Colors.green[100],
+          colorText: Colors.green[900],
+        );
+        Get.offAllNamed(HomePage.namedRoute);
+      } else {
+        throw Exception('Speichern fehlgeschlagen');
+      }
+    } catch (e) {
+      Get.snackbar(
+        'Fehler',
+        'Beim Speichern ist ein Fehler aufgetreten: $e',
+        snackPosition: SnackPosition.BOTTOM,
+        backgroundColor: Colors.red[100],
+        colorText: Colors.red[900],
+      );
+    } finally {
+      isLoading.value = false;
+    }
+  }
+
+  bool _validateForm() {
+    return dateController.text.isNotEmpty &&
+        odometerController.text.isNotEmpty &&
+        litersController.text.isNotEmpty &&
+        pricePerLiterController.text.isNotEmpty;
+  }
+
+  @override
+  void onClose() {
+    dateController.dispose();
+    odometerController.dispose();
+    litersController.dispose();
+    pricePerLiterController.dispose();
+    locationController.dispose();
+    super.onClose();
+  }
+}