Add globals.dart and obfuscate_service.dart ; implementing obfuscation

dialer/lib/features/composition/composition.dart

@@ -4,7 +4,9 @@ import 'package:flutter/material.dart';
 import 'package:flutter_contacts/flutter_contacts.dart';
 import 'package:url_launcher/url_launcher.dart';
 import '../../services/contact_service.dart';
+import '../../services/obfuscate_service.dart'; // Import ObfuscateService
 import '../contacts/widgets/add_contact_button.dart';
+import '../../globals.dart' as globals;
 
 class CompositionPage extends StatefulWidget {
   const CompositionPage({super.key});
@@ -19,6 +21,9 @@ class _CompositionPageState extends State<CompositionPage> {
   List<Contact> _filteredContacts = [];
   final ContactService _contactService = ContactService();
 
+  // Instantiate the ObfuscateService
+  final ObfuscateService _obfuscateService = ObfuscateService();
+
   @override
   void initState() {
     super.initState();
@@ -114,16 +119,12 @@ class _CompositionPageState extends State<CompositionPage> {
                                 : 'No phone number';
                             return ListTile(
                               title: Text(
-                                '${contact.displayName.isNotEmpty ? contact.displayName[0] : ''}...${contact.displayName.isNotEmpty ? contact.displayName[contact.displayName.length - 1] : ''}',
-                                // contact.displayName
-                                style:
-                                const TextStyle(color: Colors.white),
+                                _obfuscateService.obfuscateData(contact.displayName),
+                                style: const TextStyle(color: Colors.white),
                               ),
                               subtitle: Text(
-                                '${phoneNumber.isNotEmpty ? phoneNumber[0] : ''}...${phoneNumber.isNotEmpty ? phoneNumber[phoneNumber.length - 1] : ''}',
-                                // phoneNumber,
-                                style:
-                                const TextStyle(color: Colors.grey),
+                                _obfuscateService.obfuscateData(phoneNumber),
+                                style: const TextStyle(color: Colors.grey),
                               ),
                               trailing: Row(
                                 mainAxisSize: MainAxisSize.min,

dialer/lib/globals.dart

@@ -0,0 +1 @@
+bool isStealthMode = false;

dialer/lib/main.dart

@@ -1,13 +1,16 @@
 import 'package:dialer/features/home/home_page.dart';
 import 'package:flutter/material.dart';
 import 'package:dialer/features/contacts/contact_state.dart';
+import 'globals.dart' as globals;
 
 void main() {
-  runApp(const MyApp());
+  globals.isStealthMode = String.fromEnvironment('STEALTH', defaultValue: 'false') == 'true';
+
+  runApp(const Dialer());
 }
 
-class MyApp extends StatelessWidget {
-  const MyApp({super.key});
+class Dialer extends StatelessWidget {
+  const Dialer({super.key});
 
   @override
   Widget build(BuildContext context) {

dialer/lib/services/obfuscate_service.dart

@@ -0,0 +1,38 @@
+// lib/services/obfuscate_service.dart
+
+import '../../globals.dart' as globals;
+
+class ObfuscateService {
+  // Private constructor
+  ObfuscateService._privateConstructor();
+
+  // Singleton instance
+  static final ObfuscateService _instance = ObfuscateService._privateConstructor();
+
+  // Factory constructor to return the same instance
+  factory ObfuscateService() {
+    return _instance;
+  }
+
+  // Public method to obfuscate data
+  String obfuscateData(String data) {
+    if (globals.isStealthMode) {
+      return _obfuscateData(data);
+    } else {
+      return data;
+    }
+  }
+
+  // Private helper method for obfuscation logic
+  String _obfuscateData(String data) {
+    if (data.isNotEmpty) {
+      // Ensure the string has at least two characters to obfuscate
+      if (data.length == 1) {
+        return '${data[0]}';
+      } else {
+        return '${data[0]}...${data[data.length - 1]}';
+      }
+    }
+    return '';
+  }
+}

dialer/test/widget_test.dart

@@ -13,7 +13,7 @@ import 'package:dialer/main.dart';
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
+    await tester.pumpWidget(const Dialer(stealthMode: false,));
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);