feat: honestly forgot

lib/ui/bal_page/view_model/bal_view_model.dart

@@ -0,0 +1,56 @@
+import 'package:flutter/widgets.dart';
+import 'package:seshat/data/repositories/bal_repository.dart';
+import 'package:seshat/domain/models/bal.dart';
+import 'package:seshat/utils/command.dart';
+import 'package:seshat/utils/result.dart';
+
+class BalViewModel extends ChangeNotifier {
+  BalViewModel({required BalRepository balRepository, required this.id})
+    : _balRepository = balRepository {
+    load = Command0(_load)..execute();
+  }
+
+  final BalRepository _balRepository;
+
+  Bal? _bal;
+  int? id;
+  Bal? get bal => _bal;
+
+  /*
+ * =================================
+ * =====[ COMMAND AND LOADING ]=====
+ * =================================
+*/
+
+  late final Command0 load;
+  bool isLoaded = false;
+
+  Future<Result<void>> _load() async {
+    final result1 = await _loadBal();
+    switch (result1) {
+      case Error():
+        return result1;
+      default:
+        break;
+    }
+    isLoaded = true;
+    notifyListeners();
+    return result1;
+  }
+
+  Future<Result<void>> _loadBal() async {
+    if (id == null) {
+      return Result.error(Exception("No id given"));
+    }
+    final result = await _balRepository.balById(id!);
+    switch (result) {
+      case Ok():
+        _bal = result.value;
+        break;
+      case Error():
+        break;
+    }
+
+    return result;
+  }
+}