fix

lib/features/categories/data/datasources/category_local_datasource.dart

@@ -6,6 +6,7 @@ abstract class CategoryLocalDataSource {
   Future<List<CategoryModel>> getAllCategories();
   Future<CategoryModel?> getCategoryById(String id);
   Future<void> cacheCategories(List<CategoryModel> categories);
+  Future<void> updateCategory(CategoryModel category);
   Future<void> clearCategories();
 }
 
@@ -30,6 +31,11 @@ class CategoryLocalDataSourceImpl implements CategoryLocalDataSource {
     await box.putAll(categoryMap);
   }
 
+  @override
+  Future<void> updateCategory(CategoryModel category) async {
+    await box.put(category.id, category);
+  }
+
   @override
   Future<void> clearCategories() async {
     await box.clear();

lib/features/categories/data/repositories/category_repository_impl.dart

@@ -18,8 +18,27 @@ class CategoryRepositoryImpl implements CategoryRepository {
   @override
   Future<Either<Failure, List<Category>>> getAllCategories() async {
     try {
-      final categories = await localDataSource.getAllCategories();
+      // Try remote first (online-first)
+      final categories = await remoteDataSource.getAllCategories();
+      // Cache the results
+      await localDataSource.cacheCategories(categories);
       return Right(categories.map((model) => model.toEntity()).toList());
+    } on ServerException catch (e) {
+      // Remote failed, try local cache
+      try {
+        final cachedCategories = await localDataSource.getAllCategories();
+        return Right(cachedCategories.map((model) => model.toEntity()).toList());
+      } on CacheException catch (cacheError) {
+        return Left(ServerFailure('${e.message}. Cache also unavailable.'));
+      }
+    } on NetworkException catch (e) {
+      // Network failed, try local cache
+      try {
+        final cachedCategories = await localDataSource.getAllCategories();
+        return Right(cachedCategories.map((model) => model.toEntity()).toList());
+      } on CacheException catch (cacheError) {
+        return Left(NetworkFailure('${e.message}. Cache also unavailable.'));
+      }
     } on CacheException catch (e) {
       return Left(CacheFailure(e.message));
     }
@@ -28,11 +47,33 @@ class CategoryRepositoryImpl implements CategoryRepository {
   @override
   Future<Either<Failure, Category>> getCategoryById(String id) async {
     try {
-      final category = await localDataSource.getCategoryById(id);
-      if (category == null) {
-        return Left(NotFoundFailure('Category not found'));
-      }
+      // Try remote first (online-first)
+      final category = await remoteDataSource.getCategoryById(id);
+      // Cache the result
+      await localDataSource.updateCategory(category);
       return Right(category.toEntity());
+    } on ServerException catch (e) {
+      // Remote failed, try local cache
+      try {
+        final cachedCategory = await localDataSource.getCategoryById(id);
+        if (cachedCategory == null) {
+          return Left(NotFoundFailure('Category not found in cache'));
+        }
+        return Right(cachedCategory.toEntity());
+      } on CacheException catch (cacheError) {
+        return Left(ServerFailure('${e.message}. Cache also unavailable.'));
+      }
+    } on NetworkException catch (e) {
+      // Network failed, try local cache
+      try {
+        final cachedCategory = await localDataSource.getCategoryById(id);
+        if (cachedCategory == null) {
+          return Left(NotFoundFailure('Category not found in cache'));
+        }
+        return Right(cachedCategory.toEntity());
+      } on CacheException catch (cacheError) {
+        return Left(NetworkFailure('${e.message}. Cache also unavailable.'));
+      }
     } on CacheException catch (e) {
       return Left(CacheFailure(e.message));
     }

lib/features/categories/presentation/providers/categories_provider.dart

@@ -5,12 +5,12 @@ import '../../../../core/providers/providers.dart';
 
 part 'categories_provider.g.dart';
 
-/// Provider for categories list with API-first approach
+/// Provider for categories list with online-first approach
 @riverpod
 class Categories extends _$Categories {
   @override
   Future<List<Category>> build() async {
-    // API-first: Try to load from API first
+    // Online-first: Try to load from API first
     final repository = ref.watch(categoryRepositoryProvider);
     final networkInfo = ref.watch(networkInfoProvider);
 
@@ -90,18 +90,3 @@ class Categories extends _$Categories {
     });
   }
 }
-
-/// Provider for selected category
-@riverpod
-class SelectedCategory extends _$SelectedCategory {
-  @override
-  String? build() => null;
-
-  void select(String? categoryId) {
-    state = categoryId;
-  }
-
-  void clear() {
-    state = null;
-  }
-}

lib/features/categories/presentation/providers/categories_provider.g.dart

@@ -58,62 +58,3 @@ abstract class _$Categories extends $AsyncNotifier<List<Category>> {
     element.handleValue(ref, created);
   }
 }
-
-/// Provider for selected category
-
-@ProviderFor(SelectedCategory)
-const selectedCategoryProvider = SelectedCategoryProvider._();
-
-/// Provider for selected category
-final class SelectedCategoryProvider
-    extends $NotifierProvider<SelectedCategory, String?> {
-  /// Provider for selected category
-  const SelectedCategoryProvider._()
-    : super(
-        from: null,
-        argument: null,
-        retry: null,
-        name: r'selectedCategoryProvider',
-        isAutoDispose: true,
-        dependencies: null,
-        $allTransitiveDependencies: null,
-      );
-
-  @override
-  String debugGetCreateSourceHash() => _$selectedCategoryHash();
-
-  @$internal
-  @override
-  SelectedCategory create() => SelectedCategory();
-
-  /// {@macro riverpod.override_with_value}
-  Override overrideWithValue(String? value) {
-    return $ProviderOverride(
-      origin: this,
-      providerOverride: $SyncValueProvider<String?>(value),
-    );
-  }
-}
-
-String _$selectedCategoryHash() => r'a47cd2de07ad285d4b73b2294ba954cb1cdd8e4c';
-
-/// Provider for selected category
-
-abstract class _$SelectedCategory extends $Notifier<String?> {
-  String? build();
-  @$mustCallSuper
-  @override
-  void runBuild() {
-    final created = build();
-    final ref = this.ref as $Ref<String?, String?>;
-    final element =
-        ref.element
-            as $ClassProviderElement<
-              AnyNotifier<String?, String?>,
-              String?,
-              Object?,
-              Object?
-            >;
-    element.handleValue(ref, created);
-  }
-}