Frontend first draft

frontend/pweb/lib/providers/balance.dart

@@ -0,0 +1,32 @@
+import 'package:flutter/material.dart';
+
+import 'package:pweb/services/balance.dart';
+
+
+class BalanceProvider with ChangeNotifier {
+  final BalanceService _service;
+
+  BalanceProvider(this._service);
+
+  double? _balance;
+  String? _walletName;
+  String? _walletId;
+  bool _isHidden = true;
+
+  double? get balance => _balance;
+  String? get walletName => _walletName;
+  String? get walletId => _walletId;
+  bool get isHidden => _isHidden;
+
+  Future<void> loadData() async {
+    _balance = await _service.getBalance();
+    _walletName = await _service.getWalletName();
+    _walletId = await _service.getWalletId();
+    notifyListeners();
+  }
+
+  void toggleVisibility() {
+    _isHidden = !_isHidden;
+    notifyListeners();
+  }
+}