Refactored json storage

lib/repositories/transactions/transactions_repository.dart

@@ -0,0 +1,35 @@
+import 'package:rxdart/subjects.dart';
+import 'package:tunas/repositories/json/json_repository.dart';
+import 'package:tunas/repositories/transactions/models/transaction.dart';
+import 'package:tunas/repositories/transactions/models/transactions.dart';
+
+class TransactionsRepository {
+
+  final JsonRepository _jsonRepository;
+  final _transactionsController = BehaviorSubject<List<Transaction>>.seeded(const []);
+
+  TransactionsRepository({
+    required jsonRepository,
+  }) : _jsonRepository = jsonRepository;
+
+  Stream<List<Transaction>> getTransactionsStream() {
+    return _transactionsController.asBroadcastStream();
+  }
+
+  loadTransactions() async {
+    Transactions transactions = await _jsonRepository.loadJson(Transactions(), TransactionsFactory());
+    _transactionsController.add(transactions.transactions);
+  }
+
+  saveTransactions(List<Transaction> transactionsList) async {
+    Transactions transactions = Transactions(transactions: transactionsList);
+    await _jsonRepository.saveJson(transactions);
+    _transactionsController.add(transactionsList);
+  }
+
+  deleteTransactions() async {
+    Transactions transactions = Transactions();
+    await _jsonRepository.saveJson(transactions);
+    _transactionsController.add([]);
+  }
+}