Refactoring ScannerPage

lib/pages/scanner_page.dart

@@ -1,98 +1,21 @@
 import 'package:flutter/material.dart';
-import 'package:mobile_scanner/mobile_scanner.dart';
 import 'package:provider/provider.dart';
 import 'package:smoke_cess_app/models/mood.dart';
 import 'package:smoke_cess_app/models/relapse.dart';
-import 'package:smoke_cess_app/models/settings.dart';
-import 'package:smoke_cess_app/services/database_service.dart';
-import 'package:smoke_cess_app/services/json_service.dart';
 import 'package:smoke_cess_app/services/settings_service.dart';
 import 'package:smoke_cess_app/services/notification_service.dart';
-
+import 'package:smoke_cess_app/widgets/scanner.dart';
 import '../models/sleep.dart';
 import '../providers/settings_provider.dart';
-import '../widgets/missing_config_popup.dart';
 import '../globals.dart' as globals;
 
-class ScannerPage extends StatefulWidget {
+class ScannerPage extends StatelessWidget {
   const ScannerPage({super.key});
 
-  @override
+  void export() async {
-  State<StatefulWidget> createState() => ScannerPageState();
-}
-
-class ScannerPageState extends State<ScannerPage> {
-  bool scanning = false;
-
-  @override
-  Widget build(BuildContext context) {
-    var settings = context.watch<SettingsProvider>();
-    return Center(
-        child: Column(
-      mainAxisAlignment: MainAxisAlignment.center,
-      children: [
-        scanning
-            ? Expanded(
-                child: MobileScanner(
-                fit: BoxFit.contain,
-                controller: MobileScannerController(
-                  detectionTimeoutMs: 2000,
-                ),
-                onDetect: (capture) {
-                  //TODO Errorhandling!!
-                  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: () {
-            loadSettingsFromLocalJSON();
-            Future.delayed(Duration(milliseconds: 100), () {
-              settings.initSettings();
-              NotificationService().setAllNotifications();
-            });
-          },
-          child: const Text('Read JSON'),
-        ),
-        const SizedBox(height: 30),
-        ElevatedButton(
-          style: ElevatedButton.styleFrom(
-              textStyle: const TextStyle(fontSize: 20)),
-          onPressed: () async {
     List<Mood> moods = await globals.databaseService.getMoodRecords();
-            List<Sleep> sleeps =
+    List<Sleep> sleeps = await globals.databaseService.getSleepRecords();
-                await globals.databaseService.getSleepRecords();
+    List<Relapse> relapses = await globals.databaseService.getRelapseRecords();
-            List<Relapse> relapses =
-                await globals.databaseService.getRelapseRecords();
     for (Mood mood in moods) {
       print(mood.toCSV());
     }
@@ -102,7 +25,34 @@ class ScannerPageState extends State<ScannerPage> {
     for (Relapse relapse in relapses) {
       print(relapse.toCSV());
     }
-          },
+  }
+
+  void loadJSON(BuildContext context) async {
+    var settingsModel = context.read<SettingsProvider>();
+    await loadSettingsFromLocalJSON();
+    settingsModel.initSettings();
+    NotificationService().setAllNotifications();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Center(
+        child: Column(
+      mainAxisAlignment: MainAxisAlignment.center,
+      children: [
+        const MyScanner(),
+        const SizedBox(height: 30),
+        ElevatedButton(
+          style: ElevatedButton.styleFrom(
+              textStyle: const TextStyle(fontSize: 20)),
+          onPressed: () => loadJSON(context),
+          child: const Text('Read JSON'),
+        ),
+        const SizedBox(height: 30),
+        ElevatedButton(
+          style: ElevatedButton.styleFrom(
+              textStyle: const TextStyle(fontSize: 20)),
+          onPressed: export,
           child: const Text('Export'),
         )
       ],

lib/widgets/scanner.dart

@@ -0,0 +1,82 @@
+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/services/json_service.dart';
+import 'package:smoke_cess_app/services/settings_service.dart';
+import '../widgets/missing_config_popup.dart';
+
+class MyScanner extends StatefulWidget {
+  const MyScanner({super.key});
+
+  @override
+  State<StatefulWidget> createState() => MyScannerState();
+}
+
+class MyScannerState extends State<MyScanner> {
+  bool scanning = false;
+
+  void handleError(String error) {
+    setState(() {
+      scanning = false;
+      showDialog(
+          context: context,
+          builder: (BuildContext context) {
+            return MissingConfigPopup(
+              title: 'Scanfehler',
+              text:
+                  'Beim Scanen gab es folgende Meldung: $error. Bitte erneut versuchen',
+            );
+          });
+    });
+  }
+
+  void handleSucces(String group) {
+    setState(() {
+      scanning = false;
+      showDialog(
+          context: context,
+          builder: (BuildContext context) {
+            return MissingConfigPopup(
+              title: 'Konfiguration erfolgreich',
+              text: 'Du gehörst zu Gruppe $group',
+            );
+          });
+    });
+  }
+
+  void onDetect(capture) {
+    try {
+      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);
+        }
+      }
+    } catch (e) {
+      handleError(e.toString());
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return scanning
+        ? Expanded(
+            child: MobileScanner(
+                fit: BoxFit.contain,
+                controller: MobileScannerController(
+                  detectionTimeoutMs: 2000,
+                ),
+                onDetect: onDetect))
+        : ElevatedButton(
+            style: ElevatedButton.styleFrom(
+                textStyle: const TextStyle(fontSize: 20)),
+            onPressed: () {
+              setState(() => scanning = true);
+            },
+            child: const Text('Scan QR Code'),
+          );
+  }
+}