fix(history): optimize history tab initialization and data loading

lib/core/services/repositories/history_repository.dart

@@ -16,10 +16,9 @@ class HistoryRepository {
         sectionId,
         token,
         page: 1,
-        limit: 1000,
+        limit: 10,
       );
       if (response.statusCode == 200 && response.data != null) {
-        // Perbaikan disini: langsung mengakses ['payload']['history']
         final List<dynamic> historyData = response.data['payload']['history'];
         if (historyData.isEmpty) {
           return []; // Mengembalikan list kosong jika tidak ada data

lib/features/history/provider/history_provider.dart

@@ -11,6 +11,7 @@ class HistoryProvider with ChangeNotifier {
   int _selectedPageIndex = 0;
   bool _isLoading = false;
   String? _error;
+  bool _isInitialized = false;
 
   HistoryProvider(
     this._repository,
@@ -21,16 +22,49 @@ class HistoryProvider with ChangeNotifier {
   int get selectedPageIndex => _selectedPageIndex;
   bool get isLoading => _isLoading;
   String? get error => _error;
+  bool get isInitialized => _isInitialized;
+
+  Future<void> loadInitialData(String token) async {
+    if (_isInitialized) return; // Prevent double initialization
+
+    _isLoading = true;
+    _error = null;
+    notifyListeners();
+
+    try {
+      // Only fetch sections if they haven't been fetched yet
+      if (_sectionProvider.sections.isEmpty) {
+        await _sectionProvider.fetchSections(token);
+      }
+
+      if (_sectionProvider.sections.isEmpty) {
+        _error = 'No sections available';
+        return;
+      }
+
+      // Get the first section's ID
+      String firstSectionId = _sectionProvider.sections.first.id;
+
+      // Fetch history for the first section
+      _learningHistory =
+          await _repository.getLearningHistory(firstSectionId, token);
+      _error = null;
+      _isInitialized = true; // Mark as initialized
+    } catch (e) {
+      _error = 'Error loading data: ${e.toString()}';
+      _learningHistory = [];
+    } finally {
+      _isLoading = false;
+      notifyListeners();
+    }
+  }
 
   void setSelectedPageIndex(int index) {
     _selectedPageIndex = index;
     notifyListeners();
   }
 
-  Future<void> fetchLearningHistory(
-    String token, {
-    bool refresh = false,
-  }) async {
+  Future<void> fetchLearningHistory(String token) async {
     if (_sectionProvider.sections.isEmpty) {
       _error = 'No sections available';
       notifyListeners();
@@ -43,10 +77,7 @@ class HistoryProvider with ChangeNotifier {
     notifyListeners();
 
     try {
-      final history = await _repository.getLearningHistory(
-        sectionId,
-        token,
-      );
+      final history = await _repository.getLearningHistory(sectionId, token);
       _learningHistory = history;
       _error = null;
     } catch (e) {
@@ -133,36 +164,4 @@ class HistoryProvider with ChangeNotifier {
       notifyListeners();
     }
   }
-
-  // Future<void> loadHistoryData(String token) async {
-  //   _isLoading = true;
-  //   _error = null;
-  //   notifyListeners();
-
-  //   try {
-  //     // Fetch sections and learning history in parallel
-  //     final sectionsResult = _sectionProvider.fetchSections(token);
-
-  //     // Use the first section ID for initial history fetch
-  //     final firstSectionId = await sectionsResult
-  //         .then((sections) => sections.isNotEmpty ? sections.first.id : null);
-
-  //     if (firstSectionId != null) {
-  //       final historyResult =
-  //           _repository.getLearningHistory(firstSectionId, token);
-
-  //       // Wait for both futures to complete
-  //       final results = await Future.wait([sectionsResult, historyResult]);
-
-  //       _learningHistory = results[1] as List<LearningHistory>;
-  //     } else {
-  //       _error = 'No sections available';
-  //     }
-  //   } catch (e) {
-  //     _error = 'Error loading data: ${e.toString()}';
-  //   } finally {
-  //     _isLoading = false;
-  //     notifyListeners();
-  //   }
-  // }
 }

lib/features/history/widgets/custom_tab_bar.dart

@@ -6,7 +6,7 @@ import 'package:english_learning/core/utils/styles/theme.dart';
 import 'package:provider/provider.dart';
 
 class CustomTabBar extends StatelessWidget {
-  const CustomTabBar({Key? key}) : super(key: key);
+  const CustomTabBar({super.key});
 
   @override
   Widget build(BuildContext context) {
@@ -36,9 +36,9 @@ class CustomTabBar extends StatelessWidget {
   void _setSelectedPageIndex(BuildContext context, int index) {
     final historyProvider =
         Provider.of<HistoryProvider>(context, listen: false);
-    historyProvider.setSelectedPageIndex(index);
-
     final userProvider = Provider.of<UserProvider>(context, listen: false);
+
+    historyProvider.setSelectedPageIndex(index);
     historyProvider.fetchLearningHistory(userProvider.jwtToken!);
   }
 }

lib/features/home/screens/home_screen.dart

@@ -83,18 +83,22 @@ class _HomeScreenState extends State<HomeScreen> {
             gap: 8,
             selectedIndex: _selectedIndex,
             onTabChange: (index) async {
-              setState(() {
-                _selectedIndex = index;
-                _pageController.jumpToPage(index);
-              });
-              if (index == 2) {
-                // Index 2 adalah tab History
+              if (index == 2 && _selectedIndex != 2) {
+                // Only if switching TO history tab
                 final historyProvider =
                     Provider.of<HistoryProvider>(context, listen: false);
                 final userProvider =
                     Provider.of<UserProvider>(context, listen: false);
-                await historyProvider.loadHistoryData(userProvider.jwtToken!);
+
+                if (!historyProvider.isInitialized) {
+                  await historyProvider.loadInitialData(userProvider.jwtToken!);
                 }
+              }
+
+              setState(() {
+                _selectedIndex = index;
+                _pageController.jumpToPage(index);
+              });
             },
             padding: const EdgeInsets.symmetric(
               horizontal: 16,