refactoring mainpage

lib/pages/main_page.dart

@@ -1,12 +1,7 @@
 import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
-import 'package:smoke_cess_app/pages/mood_page.dart';
-import 'package:smoke_cess_app/pages/relapse_page.dart';
-import 'package:smoke_cess_app/pages/scanner_page.dart';
-import 'package:smoke_cess_app/pages/sleep_page.dart';
-import 'package:smoke_cess_app/pages/interval_page.dart';
+import 'package:smoke_cess_app/pages/pages_service.dart';
 import 'package:smoke_cess_app/providers/settings_provider.dart';
-import 'package:smoke_cess_app/services/settings_service.dart';
 import 'package:smoke_cess_app/widgets/missing_config_popup.dart';
 
 class MyHomePage extends StatefulWidget {
@@ -20,21 +15,6 @@ class MyHomePageState extends State<MyHomePage> {
   int _selectedIndex = 4;
   bool _isConfigured = false;
 
-  final List<String> _titles = [
-    'Stimmung',
-    'Schlaf',
-    'Timer',
-    'Rückfall',
-    'Scanner'
-  ];
-  static const List<Widget> _widgetOptions = <Widget>[
-    MoodPage(),
-    SleepPage(),
-    IntervalTimerPage(),
-    RelapsePage(),
-    ScannerPage(),
-  ];
-
   void _onItemTapped(int index) {
     setState(() {
       _isConfigured
@@ -58,34 +38,17 @@ class MyHomePageState extends State<MyHomePage> {
     return Scaffold(
       appBar: AppBar(
           title: Text(
-              '${_titles[_selectedIndex]} ${_isConfigured ? "Gruppe $group" : ""}')),
-      body: _widgetOptions.elementAt(_selectedIndex),
+              '${pages.keys.elementAt(_selectedIndex)} ${_isConfigured ? "Gruppe $group" : ""}')),
+      body: pages.values.elementAt(_selectedIndex)['page'],
       bottomNavigationBar: NavigationBar(
-        onDestinationSelected: _onItemTapped,
-        selectedIndex: _selectedIndex,
-        destinations: const <Widget>[
-          NavigationDestination(
-              icon: Icon(Icons.mood_outlined, color: Colors.black),
-              label: 'Stimmung'),
-          NavigationDestination(
-              icon: Icon(Icons.bedtime_outlined, color: Colors.black),
-              label: 'Schlaf'),
-          NavigationDestination(
-              icon: Icon(
-                Icons.timer_outlined,
-                color: Colors.black,
-              ),
-              label: 'Timer'),
-          NavigationDestination(
-              icon: Icon(Icons.smoke_free_outlined, color: Colors.black),
-              label: 'Rückfall'),
-          NavigationDestination(
-              icon: Icon(Icons.camera_alt_outlined, color: Colors.black),
-              label: 'Settings'),
-        ],
-
-        //onTap: _onItemTapped,
-      ),
+          onDestinationSelected: _onItemTapped,
+          selectedIndex: _selectedIndex,
+          destinations: pages.keys.map((key) {
+            return NavigationDestination(
+                icon: pages[key]!['icon'] ??
+                    const Icon(Icons.disabled_by_default),
+                label: key);
+          }).toList()),
     );
   }
 }

lib/pages/pages_service.dart

@@ -0,0 +1,32 @@
+import 'package:flutter/material.dart';
+import 'interval_page.dart';
+import 'mood_page.dart';
+import 'relapse_page.dart';
+import 'scanner_page.dart';
+import 'sleep_page.dart';
+
+const pages = {
+  'Stimmung': {
+    'page': MoodPage(),
+    'icon': Icon(Icons.mood_outlined, color: Colors.black)
+  },
+  'Schlaf': {
+    'page': SleepPage(),
+    'icon': Icon(Icons.bedtime_outlined, color: Colors.black)
+  },
+  'Timer': {
+    'page': IntervalTimerPage(),
+    'icon': Icon(Icons.smoke_free_outlined, color: Colors.black)
+  },
+  'Rückfall': {
+    'page': RelapsePage(),
+    'icon': Icon(
+      Icons.timer_outlined,
+      color: Colors.black,
+    )
+  },
+  'Scanner': {
+    'page': ScannerPage(),
+    'icon': Icon(Icons.camera_alt_outlined, color: Colors.black)
+  },
+};