feat: honestly forgot

lib/data/repositories/bal_repository.dart

@@ -0,0 +1,51 @@
+import 'package:seshat/data/services/api_client.dart';
+import 'package:seshat/domain/models/bal.dart';
+import 'package:seshat/utils/result.dart';
+
+class BalRepository {
+  BalRepository({required ApiClient apiClient}) : _apiClient = apiClient;
+
+  final ApiClient _apiClient;
+  List<Bal>? _bals;
+
+  Future<Result<List<Bal>>> getBals() async {
+    if (_bals != null) {
+      return Result.ok(_bals!);
+    }
+    final result = await _apiClient.getBals();
+    switch (result) {
+      case Ok():
+        _bals = result.value;
+        return Result.ok(result.value);
+      case Error():
+        return result;
+    }
+  }
+
+  Future<Result<Bal>> balById(int id) async {
+    if (_bals == null) {
+      await getBals();
+    }
+    Bal? bal = _bals!.where((bal) => bal.id == id).firstOrNull;
+    if (bal != null) {
+      return Result.ok(bal);
+    }
+    final result = await _apiClient.getBalById(id);
+    switch (result) {
+      case Ok():
+        return Result.ok(result.value);
+      case Error():
+        return result;
+    }
+  }
+
+  Future<Result<void>> addBal(String name) async {
+    final result = await _apiClient.addBal(name);
+    switch (result) {
+      case Ok():
+        return result;
+      case Error():
+        return result;
+    }
+  }
+}