Add toggle favorite functionality and simplify favorite contact filtering

dialer/lib/features/contacts/contact_service.dart

@@ -12,4 +12,9 @@ class ContactService {
   Future<void> addNewContact(Contact contact) async {
     await FlutterContacts.insertContact(contact);
   }
+
+  Future<void> toogleFavorite(Contact contact) async {
+    contact.isStarred = !contact.isStarred;
+    await FlutterContacts.updateContact(contact);
+  }
 }

dialer/lib/features/favorites/favorites_page.dart

@@ -1,21 +1,12 @@
 import 'package:flutter/material.dart';
+// import 'dart:developer';
+import 'package:dialer/features/favorites/favorites_state.dart';
+
 
 class FavoritePage extends StatefulWidget {
   const FavoritePage({super.key});
 
   @override
-  _FavoritePageState createState() => _FavoritePageState();
+  FavoriteContactListState createState() => FavoriteContactListState();
 }
 
-class _FavoritePageState extends State<FavoritePage> {
-  @override
-  Widget build(BuildContext context) {
-    return Scaffold(
-      backgroundColor: Colors.black,
-      appBar: AppBar(
-        title: const Text('Favorites'),
-      ),
-      body: Text("Hello")
-    );
-  }
-}

dialer/lib/features/favorites/favorites_state.dart

@@ -0,0 +1,46 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_contacts/flutter_contacts.dart';
+import 'package:dialer/features/contacts/contact_service.dart';
+import 'package:dialer/widgets/loading_indicator.dart';
+import 'package:dialer/features/contacts/widgets/alphabet_scroll_page.dart';
+import 'package:dialer/features/favorites/favorites_page.dart';
+
+class FavoriteContactListState extends State<FavoritePage> {
+  List<Contact> _contacts = [];
+  bool _loading = true;
+  final ContactService _contactService = ContactService();
+
+  bool get loading => _loading;
+
+  @override
+  void initState() {
+    super.initState();
+    _fetchContacts();
+  }
+
+  Future<void> _fetchContacts() async {
+    List<Contact> contacts = await _contactService.fetchContacts();
+    contacts = contacts.where((contact) => contact.phones.isNotEmpty).toList();
+    contacts.sort((a, b) => a.displayName.compareTo(b.displayName));
+    contacts = contacts.where((contact) => contact.isStarred).toList();
+    setState(() {
+      _contacts = contacts;
+      _loading = false;
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Contacts Favoris'),
+      ),
+      body: _loading
+          ? const LoadingIndicatorWidget()
+          : AlphabetScrollPage(
+              contacts: _contacts,
+              scrollOffset: 0.0,
+            ),
+    );
+  }
+}

dialer/pubspec.yaml

@@ -38,6 +38,7 @@ dependencies:
   flutter_contacts: ^1.1.9+2
   permission_handler: ^10.2.0 # For handling permissions
   cached_network_image: ^3.2.3 # For caching contact images
+  shared_preferences: ^2.3.2 # For storing user preferences
 
 dev_dependencies:
   flutter_test: