fix: improve history page performance and state management (#47)

smooth switch to history page

Co-authored-by: AlexisDanlos <91090088+AlexisDanlos@users.noreply.github.com>
Co-authored-by: stcb <21@stcb.cc>
Reviewed-on: #47
Co-authored-by: alexis <alexis.danlos@epitech.eu>
Co-committed-by: alexis <alexis.danlos@epitech.eu>

dialer/lib/features/history/history_page.dart

@@ -37,7 +37,7 @@ class HistoryPage extends StatefulWidget {
 }
 
 class _HistoryPageState extends State<HistoryPage>
-    with SingleTickerProviderStateMixin {
+    with AutomaticKeepAliveClientMixin, SingleTickerProviderStateMixin {
   List<History> histories = [];
   bool loading = true;
   int? _expandedIndex;
@@ -47,10 +47,13 @@ class _HistoryPageState extends State<HistoryPage>
   // Create a MethodChannel instance.
   static const MethodChannel _channel = MethodChannel('com.example.calllog');
 
+  @override
+  bool get wantKeepAlive => true; // Preserve state when switching pages
+
   @override
   void didChangeDependencies() {
     super.didChangeDependencies();
-    if (loading) {
+    if (loading && histories.isEmpty) {
       _buildHistories();
     }
   }
@@ -149,9 +152,9 @@ class _HistoryPageState extends State<HistoryPage>
     List<Contact> contacts = contactState.contacts;
 
     List<History> callHistories = [];
-    // Process each log entry.
+    // Process each log entry with intermittent yields to avoid freezing.
-    for (var entry in nativeLogs) {
+    for (int i = 0; i < nativeLogs.length; i++) {
-      // Each entry is a Map with keys: number, type, date, duration.
+      final entry = nativeLogs[i];
       final String number = entry['number'] ?? '';
       if (number.isEmpty) continue;
 
@@ -197,6 +200,8 @@ class _HistoryPageState extends State<HistoryPage>
 
       callHistories
           .add(History(matchedContact, callDate, callType, callStatus, 1));
+      // Yield every 10 iterations to avoid blocking the UI.
+      if (i % 10 == 0) await Future.delayed(Duration(milliseconds: 1));
     }
 
     // Sort histories by most recent.
@@ -272,6 +277,7 @@ class _HistoryPageState extends State<HistoryPage>
 
   @override
   Widget build(BuildContext context) {
+    super.build(context); // required due to AutomaticKeepAliveClientMixin
     final contactState = ContactState.of(context);
 
     if (loading || contactState.loading) {

dialer/lib/features/home/home_page.dart

@@ -25,7 +25,7 @@ class _MyHomePageState extends State<MyHomePage>
   void initState() {
     super.initState();
     // Set the TabController length to 4
-    _tabController = TabController(length: 4, vsync: this, initialIndex: 1);
+    _tabController = TabController(length: 4, vsync: this, initialIndex: 2);
     _tabController.addListener(_handleTabIndex);
     _fetchContacts();
   }