added popup on successfull scan

assets/config.json

@@ -1,4 +0,0 @@
-{
-  "group": "Gruppe 2",
-  "key": "value"
-}

lib/pages/main_page.dart

@@ -41,7 +41,10 @@ class MyHomePageState extends State<MyHomePage> {
           : showDialog(
               context: context,
               builder: (BuildContext context) {
-                return const MissingConfigPopup();
+                return const MissingConfigPopup(
+                  title: 'Fehlende Konfiguration',
+                  text: 'Bitte QR Code Scannen!',
+                );
               });
     });
   }

lib/pages/scanner_page.dart

@@ -1,30 +1,71 @@
 import 'package:flutter/material.dart';
 import 'package:mobile_scanner/mobile_scanner.dart';
+import 'package:smoke_cess_app/models/settings.dart';
+import 'package:smoke_cess_app/service/json_service.dart';
 import 'package:smoke_cess_app/service/settings_service.dart';
 
-class ScannerPage extends StatelessWidget {
+import '../widgets/missing_config_popup.dart';
+
+class ScannerPage extends StatefulWidget {
   const ScannerPage({super.key});
 
+  @override
+  State<StatefulWidget> createState() => ScannerPageState();
+}
+
+class ScannerPageState extends State<ScannerPage> {
+  bool scanning = false;
+
   @override
   Widget build(BuildContext context) {
     return Center(
         child: Column(
       mainAxisAlignment: MainAxisAlignment.center,
       children: [
-        Expanded(child: MobileScanner(fit: BoxFit.contain,onDetect: (capture) {
-          final List<Barcode> barcodes = capture.barcodes;
-          for (final barcode in barcodes) {
-          debugPrint('Barcode found! ${barcode.rawValue}');
-        } },
-
-        ))
-        ,
+        scanning
+            ? Expanded(
+                child: MobileScanner(
+                fit: BoxFit.contain,
+                controller: MobileScannerController(
+                  detectionTimeoutMs: 2000,
+                ),
+                onDetect: (capture) {
+                  final List<Barcode> barcodes = capture.barcodes;
+                  for (final barcode in barcodes) {
+                    if (barcode.rawValue != null) {
+                      String qrText = barcode.rawValue!;
+                      Map<String, dynamic> json = stringToJSON(qrText);
+                      Settings settings = Settings.fromJson(json);
+                      saveSettings(settings);
+                      setState(() {
+                        scanning = false;
+                        showDialog(
+                            context: context,
+                            builder: (BuildContext context) {
+                              return MissingConfigPopup(
+                                title: 'Konfiguration erfolgreich',
+                                text: 'Du gehörst zu Gruppe ${settings.group}',
+                              );
+                            });
+                      });
+                    }
+                  }
+                },
+              ))
+            : ElevatedButton(
+                style: ElevatedButton.styleFrom(
+                    textStyle: const TextStyle(fontSize: 20)),
+                onPressed: () {
+                  setState(() => scanning = true);
+                },
+                child: const Text('Scan QR Code'),
+              ),
         const SizedBox(height: 30),
         ElevatedButton(
           style: ElevatedButton.styleFrom(
               textStyle: const TextStyle(fontSize: 20)),
           onPressed: () {
-            loadSettings();
+            loadSettingsFromLocalJSON();
           },
           child: const Text('Read JSON'),
         )

lib/service/json_service.dart

@@ -10,3 +10,5 @@ Future<Map<String, dynamic>> loadLocalConfigJSON() async {
 
 List<String>? jsonPropertyAsList(dynamic property) =>
     property != null ? List.from(property) : null;
+
+Map<String, dynamic> stringToJSON(String jsonString) => jsonDecode(jsonString);

lib/service/settings_service.dart

@@ -45,7 +45,7 @@ Future<List<String>?> _getStringListSetting(String settingKey) =>
     SharedPreferences.getInstance()
         .then((pref) => pref.getStringList(settingKey));
 
-Future<void> loadSettings() async {
+Future<void> loadSettingsFromLocalJSON() async {
   Map<String, dynamic> configJSON = await loadLocalConfigJSON();
   Settings settings = Settings.fromJson(configJSON);
   saveSettings(settings);

lib/widgets/missing_config_popup.dart

@@ -1,17 +1,20 @@
 import 'package:flutter/material.dart';
 
 class MissingConfigPopup extends StatelessWidget {
-  const MissingConfigPopup({super.key});
+  final String title;
+  final String text;
+  const MissingConfigPopup(
+      {super.key, required this.title, required this.text});
 
   @override
   Widget build(BuildContext context) {
     return AlertDialog(
-      title: const Text('Fehlende Konfiguration'),
+      title: Text(title),
       content: Column(
         mainAxisSize: MainAxisSize.min,
         crossAxisAlignment: CrossAxisAlignment.start,
-        children: const <Widget>[
-          Text("Bitte QR Code Scannen"),
+        children: <Widget>[
+          Text(text),
         ],
       ),
     );

pubspec.yaml

@@ -64,7 +64,6 @@ flutter:
   #   - images/a_dot_burr.jpeg
   #   - images/a_dot_ham.jpeg
   assets:
-    - config.json
     - group1.json
     - group3.json