Fix qr code in of adding labels in add cycles.dart

lib/providers/cycles.dart

@@ -1,11 +1,15 @@
 import 'dart:convert';
 
+import 'package:fluttertoast/fluttertoast.dart';
+
 import '../config/urls.dart';
 import '../config/user.dart';
 import '../models/cycles_models.dart';
 import 'package:flutter/material.dart';
 import 'package:http/http.dart' as http;
 
+import '../pages/TestPages/test_filter_screen.dart';
+
 class CyclesProvider extends ChangeNotifier {
   List<String> labelVals = [];
   List<TextEditingController> labelValues = [];
@@ -41,6 +45,55 @@ class CyclesProvider extends ChangeNotifier {
     notifyListeners();
   }
 
+  var isCorrectLabel = false;
+
+  changeLabelValByScan(String value, int index) async {
+    labelVals.forEach((label) {
+      if (label == value) {
+        labelValues[index].text = label;
+        isCorrectLabel = true;
+      }
+      print("label value : $label");
+    });
+    notifyListeners();
+  }
+
+  void scanLabel(isEnabled, context, index) async {
+    await scan().then(
+      (String result) async {
+        if (result == 'cancel') {
+          if (index != 0) await removeLabelVal();
+          print('cancel');
+        } else if (result == 'error') {
+          print('error');
+        } else if (result == 'access') {
+          print('access');
+        } else {
+          await changeLabelValByScan(result, index);
+          isEnabled = false;
+          print("currect label : ${isCorrectLabel}");
+          if (isCorrectLabel) {
+            Fluttertoast.showToast(
+              msg: "Label added.",
+              toastLength: Toast.LENGTH_SHORT,
+              gravity: ToastGravity.BOTTOM,
+            );
+            scanLabel(isEnabled, context, index += 1);
+            await addLabelVal();
+            isCorrectLabel = false;
+          } else {
+            Fluttertoast.showToast(
+              msg: "No label exists,try again!",
+              toastLength: Toast.LENGTH_SHORT,
+              gravity: ToastGravity.BOTTOM,
+            );
+            scanLabel(isEnabled, context, index);
+          }
+        }
+      },
+    );
+  }
+
   String searchBoxValue = '';
   bool filterOn = false;
   List<CycleResultObject>? items;