feat: add more security enviroment variable based settings

lib/main.dart

@@ -3,10 +3,20 @@ import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'src/app.dart';
 import 'src/shared/data/local/app_database.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
 
+  try {
+    await dotenv.load(fileName: '.env');
+    debugPrint('✅ Environment loaded: ${dotenv.env['ENVIRONMENT']}');
+    debugPrint('✅ API URL: ${dotenv.env['API_BASE_URL']}');
+  } catch (e) {
+    debugPrint('⚠️ Could not load .env file: $e');
+    debugPrint('⚠️ Using default production values');
+  }
+
   await SystemChrome.setPreferredOrientations([
     DeviceOrientation.portraitUp,
     DeviceOrientation.portraitDown,

lib/src/core/constants/app_constants.dart

@@ -1,10 +1,36 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
 
 class AppConstants {
+  // ✅ API Configuration aus Environment
+  static String get apiBaseUrl =>
+      dotenv.env['API_BASE_URL'] ?? 'https://slift.patanix.de';
+
+  static String get apiVersion => dotenv.env['API_VERSION'] ?? 'v1';
+
+  static String get environment => dotenv.env['ENVIRONMENT'] ?? 'production';
+
+  static bool get isDebugMode =>
+      dotenv.env['DEBUG_MODE']?.toLowerCase() == 'true';
+
+  // ✅ Helper Getter
+  static bool get isDevelopment => environment == 'development';
+  static bool get isProduction => environment == 'production';
+
+  // Debug Info
+  static void printConfig() {
+    debugPrint('═══════════════════════════════════');
+    debugPrint('🔧 APP CONFIGURATION');
+    debugPrint('Environment: $environment');
+    debugPrint('API Base URL: $apiBaseUrl');
+    debugPrint('API Version: $apiVersion');
+    debugPrint('Debug Mode: $isDebugMode');
+    debugPrint('═══════════════════════════════════');
+  }
   // API Configuration
   // static const String apiBaseUrl = 'http://10.0.2.2:8090'; // Android emulator
-  static const String apiBaseUrl = 'https://slift.patanix.de';
+  // static const String apiBaseUrl = 'https://slift.patanix.de';
-  static const String apiVersion = 'v1';
+  // static const String apiVersion = 'v1';
 
   // Wendler 5/3/1 Constants
   static const double trainingMaxPercentage = 0.9;

lib/src/core/debug/debug_config_screen.dart

@@ -0,0 +1,96 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_dotenv/flutter_dotenv.dart';
+
+import '../constants/app_constants.dart';
+import '../theme/app_theme.dart';
+
+class DebugConfigScreen extends StatelessWidget {
+  const DebugConfigScreen({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: const Text('🔧 Configuration'),
+      ),
+      body: ListView(
+        padding: const EdgeInsets.all(16),
+        children: [
+          _buildSection(
+            'Environment',
+            [
+              _buildRow('Environment', AppConstants.environment),
+              _buildRow('Debug Mode', AppConstants.isDebugMode.toString()),
+              _buildRow(
+                  'Is Development', AppConstants.isDevelopment.toString()),
+              _buildRow('Is Production', AppConstants.isProduction.toString()),
+            ],
+          ),
+          const SizedBox(height: 16),
+          _buildSection(
+            'API Configuration',
+            [
+              _buildRow('Base URL', AppConstants.apiBaseUrl),
+              _buildRow('API Version', AppConstants.apiVersion),
+            ],
+          ),
+          const SizedBox(height: 16),
+          _buildSection(
+            'All Environment Variables',
+            dotenv.env.entries.map((e) => _buildRow(e.key, e.value)).toList(),
+          ),
+        ],
+      ),
+    );
+  }
+
+  Widget _buildSection(String title, List<Widget> children) {
+    return Card(
+      child: Padding(
+        padding: const EdgeInsets.all(16),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(
+              title,
+              style: const TextStyle(
+                fontSize: 18,
+                fontWeight: FontWeight.bold,
+                color: AppTheme.primaryColor,
+              ),
+            ),
+            const Divider(),
+            ...children,
+          ],
+        ),
+      ),
+    );
+  }
+
+  Widget _buildRow(String key, String value) {
+    return Padding(
+      padding: const EdgeInsets.symmetric(vertical: 4),
+      child: Row(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          SizedBox(
+            width: 120,
+            child: Text(
+              key,
+              style: const TextStyle(
+                fontWeight: FontWeight.bold,
+                color: Colors.grey,
+              ),
+            ),
+          ),
+          Expanded(
+            child: Text(
+              value,
+              style: const TextStyle(color: Colors.white),
+            ),
+          ),
+        ],
+      ),
+    );
+  }
+}

lib/src/features/dashboard/presentation/screens/hub_screen.dart

@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:go_router/go_router.dart';
 
+import '../../../../core/constants/app_constants.dart';
+import '../../../../core/debug/debug_config_screen.dart';
 import '../../../../core/theme/app_theme.dart';
 import '../../../../shared/data/local/app_database.dart';
 import '../../../../shared/data/repositories/user_repository.dart';
@@ -292,6 +294,17 @@ class _HubScreenState extends ConsumerState<HubScreen> {
                       child: Row(
                         mainAxisAlignment: MainAxisAlignment.spaceBetween,
                         children: [
+                          if (AppConstants.isDevelopment)
+                            IconButton(
+                              icon: const Icon(Icons.settings),
+                              onPressed: () => Navigator.push(
+                                context,
+                                MaterialPageRoute(
+                                  builder: (context) =>
+                                      const DebugConfigScreen(),
+                                ),
+                              ),
+                            ),
                           IconButton(
                             icon: const Icon(Icons.person_outline),
                             onPressed: () => context.go('/profile'),