added wallet source to quotation preparation

frontend/pshared/lib/provider/payment/quotation.dart

@@ -1,8 +1,10 @@
 import 'package:flutter/material.dart';
-import 'package:pshared/models/asset.dart';
 
 import 'package:uuid/uuid.dart';
 
+import 'package:pshared/api/requests/payment/quote.dart';
+import 'package:pshared/data/mapper/payment/intent/payment.dart';
+import 'package:pshared/models/asset.dart';
 import 'package:pshared/models/payment/currency_pair.dart';
 import 'package:pshared/models/payment/fx/intent.dart';
 import 'package:pshared/models/payment/fx/side.dart';
@@ -11,14 +13,14 @@ import 'package:pshared/models/payment/methods/card.dart';
 import 'package:pshared/models/payment/methods/managed_wallet.dart';
 import 'package:pshared/models/payment/money.dart';
 import 'package:pshared/models/payment/settlement_mode.dart';
-import 'package:pshared/provider/payment/amount.dart';
-import 'package:pshared/api/requests/payment/quote.dart';
-import 'package:pshared/data/mapper/payment/intent/payment.dart';
 import 'package:pshared/models/payment/intent.dart';
 import 'package:pshared/models/payment/quote.dart';
 import 'package:pshared/provider/organizations.dart';
+import 'package:pshared/provider/payment/amount.dart';
+import 'package:pshared/provider/payment/wallets.dart';
 import 'package:pshared/provider/resource.dart';
 import 'package:pshared/service/payment/quotation.dart';
+import 'package:pshared/utils/currency.dart';
 
 
 class QuotationProvider extends ChangeNotifier {
@@ -26,31 +28,38 @@ class QuotationProvider extends ChangeNotifier {
   late OrganizationsProvider _organizations;
   bool _isLoaded = false;
 
-  void update(OrganizationsProvider venue, PaymentAmountProvider payment) {
+  void update(
+    OrganizationsProvider venue, 
+    PaymentAmountProvider payment,
+    WalletsProvider wallets,
+  ) {
     _organizations = venue;
-    getQuotation(PaymentIntent(
-      kind: PaymentKind.payout,
-      amount: Money(
-        amount: payment.amount.toString(), 
-        currency: 'USDT',
-      ),
-      destination: CardPaymentMethod(
-        pan: '4000000000000077',
-        firstName: 'John',
-        lastName: 'Doe',
-      ),
-      source: ManagedWalletPaymentMethod(
-        managedWalletRef: '',
-      ),
-      fx: FxIntent(
-        pair: CurrencyPair(
-          base: 'USDT', 
-          quote: 'RUB',
+    if (wallets.selectedWallet != null) {
+      getQuotation(PaymentIntent(
+        kind: PaymentKind.payout,
+        amount: Money(
+          amount: payment.amount.toString(), 
+          // TODO: adapt to possible other sources
+          currency: currencyCodeToString(wallets.selectedWallet!.currency),
         ),
-        side: FxSide.sellBaseBuyQuote,
-      ),
-      settlementMode: payment.payerCoversFee ? SettlementMode.fixReceived : SettlementMode.fixSource,
-    ));
+        destination: CardPaymentMethod(
+          pan: '4000000000000077',
+          firstName: 'John',
+          lastName: 'Doe',
+        ),
+        source: ManagedWalletPaymentMethod(
+          managedWalletRef: wallets.selectedWallet!.id,
+        ),
+        fx: FxIntent(
+          pair: CurrencyPair(
+            base: currencyCodeToString(wallets.selectedWallet!.currency), 
+            quote: 'RUB',
+          ),
+          side: FxSide.sellBaseBuyQuote,
+        ),
+        settlementMode: payment.payerCoversFee ? SettlementMode.fixReceived : SettlementMode.fixSource,
+      ));
+    }
   }
 
   PaymentQuote? get quotation => _quotation.data;

frontend/pshared/lib/provider/payment/wallets.dart

@@ -0,0 +1,103 @@
+import 'package:flutter/material.dart';
+
+import 'package:pshared/models/payment/wallet.dart';
+import 'package:pshared/provider/organizations.dart';
+import 'package:pshared/provider/resource.dart';
+import 'package:pshared/service/payment/wallets.dart';
+import 'package:pshared/utils/exception.dart';
+
+
+
+class WalletsProvider with ChangeNotifier {
+  final WalletsService _service;
+  late OrganizationsProvider _organizations;
+
+  WalletsProvider(this._service);
+
+  Resource<List<Wallet>> _resource = Resource(data: []);
+  Resource<List<Wallet>> get resource => _resource;
+
+  List<Wallet> get wallets => _resource.data ?? [];
+  bool get isLoading => _resource.isLoading;
+  Exception? get error => _resource.error;
+
+  Wallet? _selectedWallet;
+  Wallet? get selectedWallet => _selectedWallet;
+  final bool _isHidden = true;
+  bool get isHidden => _isHidden;
+
+  bool _isRefreshingBalances = false;
+  bool get isRefreshingBalances => _isRefreshingBalances;
+
+  void update(OrganizationsProvider organizations) {
+    _organizations = organizations;
+    if (_organizations.isOrganizationSet) loadWalletsWithBalances();
+  }
+
+  Future<Wallet> updateWallet(Wallet newWallet) {
+    throw Exception('update wallet is not implemented');
+  }
+
+  void selectWallet(Wallet wallet) {
+    _selectedWallet = wallet;
+    notifyListeners();
+  }
+
+  Future<void> loadWalletsWithBalances() async {
+    _setResource(_resource.copyWith(isLoading: true, error: null));
+    try {
+      final base = await _service.getWallets(_organizations.current.id);
+      final withBalances = <Wallet>[];
+      for (final wallet in base) {
+        try {
+          final balance = await _service.getBalance(_organizations.current.id, wallet.id);
+          withBalances.add(wallet.copyWith(balance: balance));
+        } catch (e) {
+          _setResource(_resource.copyWith(error: toException(e)));
+          withBalances.add(wallet);
+        }
+      }
+      _setResource(Resource(data: withBalances, isLoading: false, error: _resource.error));
+    } catch (e) {
+      _setResource(_resource.copyWith(isLoading: false, error: toException(e)));
+    }
+  }
+
+  Future<void> refreshBalances() async {
+    if (wallets.isEmpty) return;
+    _isRefreshingBalances = true;
+    notifyListeners();
+
+    try {
+      final updated = <Wallet>[];
+      for (final wallet in wallets) {
+        final balance = await _service.getBalance(_organizations.current.id, wallet.id);
+        updated.add(wallet.copyWith(balance: balance));
+      }
+      _setResource(_resource.copyWith(data: updated));
+    } catch (e) {
+      _setResource(_resource.copyWith(error: toException(e)));
+    } finally {
+      _isRefreshingBalances = false;
+      notifyListeners();
+    }
+  }
+
+  void toggleVisibility(String walletId) {
+    final index = wallets.indexWhere((w) => w.id == walletId);
+    if (index < 0) return;
+    final wallet = wallets[index];
+    final updated = wallet.copyWith(isHidden: !wallet.isHidden);
+    final next = List<Wallet>.from(wallets);
+    next[index] = updated;
+    _setResource(_resource.copyWith(data: next));
+    if (_selectedWallet?.id == walletId) {
+      _selectedWallet = updated;
+    }
+  }
+
+  void _setResource(Resource<List<Wallet>> newResource) {
+    _resource = newResource;
+    notifyListeners();
+  }
+}