feat: complete pattern page

lib/screens/pattern.dart

@@ -7,20 +7,68 @@ import 'package:lottis_birthday_escaperoom_app/screens/admin.dart';
 import 'package:lottis_birthday_escaperoom_app/util.dart';
 import 'package:mobile_scanner/mobile_scanner.dart';
 
-class PatternScreen extends StatelessWidget {
+class PatternScreen extends StatefulWidget {
   const PatternScreen({Key? key}) : super(key: key);
 
+  @override
+  _PatternScreenState createState() => _PatternScreenState();
+}
+
+class _PatternScreenState extends State<PatternScreen> {
+  bool _showBackPattern = false;
+
+  void _togglePattern(int index) {
+    setState(() {
+      _showBackPattern = index == 1;
+    });
+  }
+
   @override
   Widget build(BuildContext context) {
-    GameController c = Get.find();
     return PopScope(
       canPop: false,
       child: Scaffold(
-        body: Image.asset(
-          'assets/images/pattern.jpg', // Replace with your image path
-          fit: BoxFit.contain,
-          width: double.infinity,
-          height: double.infinity,
+        appBar: AppBar(
+          title: const Text('Lotti\'s Escape Room - Rätsel 1'),
+          actions: [
+            IconButton(
+              icon: const Icon(Icons.smart_toy_outlined),
+              onPressed: () {
+                showAdminLoginPopup();
+              },
+            ),
+          ],
+        ),
+        body: Column(
+          children: [
+            Expanded(
+              child: RotatedBox(
+                quarterTurns: 1,
+                child: Image.asset(
+                  !_showBackPattern
+                      ? 'assets/images/pattern_vorne.png'
+                      : 'assets/images/pattern_hinten.png',
+                  fit: BoxFit.contain,
+                  width: double.infinity,
+                  height: double.infinity,
+                ),
+              ),
+            ),
+            BottomNavigationBar(
+              currentIndex: _showBackPattern ? 1 : 0,
+              onTap: _togglePattern,
+              items: const [
+                BottomNavigationBarItem(
+                  icon: Icon(Icons.front_hand),
+                  label: 'Vorne',
+                ),
+                BottomNavigationBarItem(
+                  icon: Icon(Icons.back_hand),
+                  label: 'Hinten',
+                ),
+              ],
+            ),
+          ],
         ),
       ),
     );

pubspec.yaml

@@ -68,6 +68,8 @@ flutter:
     # - images/a_dot_burr.jpeg
     # - images/a_dot_ham.jpeg
     - assets/sounds/beep.mp3
+    - assets/images/pattern_hinten.png
+    - assets/images/pattern_vorne.png
 
   # An image asset can refer to one or more resolution-specific "variants", see
   # https://flutter.dev/to/resolution-aware-images