dynamic theme, basic category settings

lib/repositories/metadata/metadata_repository.dart

@@ -16,10 +16,18 @@ class MetadataRepository {
     required jsonRepository,
   }) : _jsonRepository = jsonRepository;
 
+  List<Category> getCategories() {
+    return _categoriesController.value;
+  }
+
   Stream<List<Category>> getCategoriesStream() {
     return _categoriesController.asBroadcastStream();
   }
 
+  List<Budget> getBudgets() {
+    return _budgetController.value;
+  }
+
   Stream<List<Budget>> getBudgetsStream() {
     return _budgetController.asBroadcastStream();
   }
@@ -32,30 +40,33 @@ class MetadataRepository {
     return _accountController.asBroadcastStream();
   }
 
-  loadMetadata() async {
+  void loadMetadata() async {
     Metadata metadata = await _jsonRepository.loadJson(Metadata(), MetadataFactory());
     _broadcastMetadata(metadata);
   }
 
-  saveCategories(List<Category> categories) async {
+  Future<List<Category>> saveCategories(List<Category> categories) async {
     Metadata metadata = _constructMetadataFromControllers();
     metadata.categories = categories;
     await _jsonRepository.saveJson(metadata);
     _categoriesController.add(categories);
+    return categories;
   }
 
-  saveBudgets(List<Budget> budgets) async {
+  Future<List<Budget>> saveBudgets(List<Budget> budgets) async {
     Metadata metadata = _constructMetadataFromControllers();
     metadata.budgets = budgets;
     await _jsonRepository.saveJson(metadata);
     _budgetController.add(budgets);
+    return budgets;
   }
 
-  saveAccounts(List<Account> accounts) async {
+  Future<List<Account>> saveAccounts(List<Account> accounts) async {
     Metadata metadata = _constructMetadataFromControllers();
     metadata.accounts = accounts;
     await _jsonRepository.saveJson(metadata);
     _accountController.add(accounts);
+    return accounts;
   }
 
   deleteMetadata() async {