basic csv loader, transaction list & half done stats page

lib/repositories/account/account_repository.dart

@@ -0,0 +1,45 @@
+import 'dart:convert';
+
+import 'package:rxdart/subjects.dart';
+import 'package:tunas/clients/storage/storage_client.dart';
+import 'package:tunas/repositories/account/models/account.dart';
+import 'package:tunas/repositories/account/models/transaction.dart';
+
+class AccountRepository {
+  String accountFile = 'main_account.json';
+
+  final StorageClient _storageClient;
+
+  final _transactionsController = BehaviorSubject<List<Transaction>>.seeded(const []);
+
+  AccountRepository({
+    required storageClient,
+  }) : _storageClient = storageClient {
+    init();
+  }
+
+  init() async {
+    final account = await getAccount();
+    _transactionsController.add(account.transactions);
+  }
+
+  Stream<List<Transaction>> getTransactionsStream() {
+    return _transactionsController.asBroadcastStream();
+  }
+
+  Future<Account> getAccount() async {
+    String json = await _storageClient.load(accountFile);
+    Map<String, dynamic> accountJson = jsonDecode(json);
+    return Account.fromJson(accountJson);
+  }
+
+  saveAccount(Account account) async {
+    await _storageClient.save(accountFile, jsonEncode(account.toJson()));
+  }
+
+  saveTransactions(List<Transaction> transactions) async {
+    final account = Account(transactions: transactions);
+    await saveAccount(account);
+    _transactionsController.add(account.transactions);
+  }
+}