Added quote expiry-aware flows with auto-refresh

frontend/pshared/lib/data/mapper/payment/payment.dart

@@ -2,16 +2,25 @@ import 'package:pshared/data/dto/payment/card.dart';
 import 'package:pshared/data/dto/payment/card_token.dart';
 import 'package:pshared/data/dto/payment/endpoint.dart';
 import 'package:pshared/data/dto/payment/external_chain.dart';
+import 'package:pshared/data/dto/payment/iban.dart';
 import 'package:pshared/data/dto/payment/ledger.dart';
 import 'package:pshared/data/dto/payment/managed_wallet.dart';
+import 'package:pshared/data/dto/payment/russian_bank.dart';
+import 'package:pshared/data/dto/payment/wallet.dart';
 import 'package:pshared/data/mapper/payment/asset.dart';
+import 'package:pshared/data/mapper/payment/iban.dart';
 import 'package:pshared/data/mapper/payment/type.dart';
+import 'package:pshared/data/mapper/payment/russian_bank.dart';
+import 'package:pshared/data/mapper/payment/wallet.dart';
 import 'package:pshared/models/payment/methods/card.dart';
 import 'package:pshared/models/payment/methods/card_token.dart';
 import 'package:pshared/models/payment/methods/crypto_address.dart';
 import 'package:pshared/models/payment/methods/data.dart';
+import 'package:pshared/models/payment/methods/iban.dart';
 import 'package:pshared/models/payment/methods/ledger.dart';
 import 'package:pshared/models/payment/methods/managed_wallet.dart';
+import 'package:pshared/models/payment/methods/russian_bank.dart';
+import 'package:pshared/models/payment/methods/wallet.dart';
 import 'package:pshared/models/payment/type.dart';
 
 
@@ -75,8 +84,27 @@ extension PaymentMethodDataEndpointMapper on PaymentMethodData {
           ).toJson(),
           metadata: metadata,
         );
-      default:
+      case PaymentType.iban:
-        throw UnsupportedError('Unsupported payment endpoint type: $type');
+        final payload = this as IbanPaymentMethod;
+        return PaymentEndpointDTO(
+          type: paymentTypeToValue(type),
+          data: payload.toDTO().toJson(),
+          metadata: metadata,
+        );
+      case PaymentType.bankAccount:
+        final payload = this as RussianBankAccountPaymentMethod;
+        return PaymentEndpointDTO(
+          type: paymentTypeToValue(type),
+          data: payload.toDTO().toJson(),
+          metadata: metadata,
+        );
+      case PaymentType.wallet:
+        final payload = this as WalletPaymentMethod;
+        return PaymentEndpointDTO(
+          type: paymentTypeToValue(type),
+          data: payload.toDTO().toJson(),
+          metadata: metadata,
+        );
     }
   }
 }
@@ -126,8 +154,15 @@ extension PaymentEndpointDTOMapper on PaymentEndpointDTO {
           maskedPan: payload.maskedPan,
           metadata: metadata,
         );
-      default:
+      case PaymentType.iban:
-        throw UnsupportedError('Unsupported payment endpoint type: ${paymentTypeFromValue(type)}');
+        final payload = IbanPaymentDataDTO.fromJson(data);
+        return payload.toDomain();
+      case PaymentType.bankAccount:
+        final payload = RussianBankAccountPaymentDataDTO.fromJson(data);
+        return payload.toDomain();
+      case PaymentType.wallet:
+        final payload = WalletPaymentDataDTO.fromJson(data);
+        return payload.toDomain();
     }
   }
 }

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

@@ -31,7 +31,7 @@ class PaymentProvider extends ChangeNotifier {
 
   Future<Payment?> pay({String? idempotencyKey, Map<String, String>? metadata}) async {
     if (!_organization.isOrganizationSet) throw StateError('Organization is not set');
-    if (!_quotation.isReady) throw StateError('Quotation is not ready');
+    if (!_quotation.hasLiveQuote) throw StateError('Quotation is not ready');
     final quoteRef = _quotation.quotation?.quoteRef;
     if (quoteRef == null || quoteRef.isEmpty) {
       throw StateError('Quotation reference is not set');

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

@@ -1,3 +1,6 @@
+import 'dart:async';
+import 'dart:convert';
+
 import 'package:flutter/material.dart';
 
 import 'package:collection/collection.dart';
@@ -15,6 +18,7 @@ import 'package:pshared/models/payment/kind.dart';
 import 'package:pshared/models/payment/methods/managed_wallet.dart';
 import 'package:pshared/models/payment/methods/type.dart';
 import 'package:pshared/models/payment/money.dart';
+import 'package:pshared/models/payment/type.dart';
 import 'package:pshared/models/payment/settlement_mode.dart';
 import 'package:pshared/models/payment/intent.dart';
 import 'package:pshared/models/payment/quote.dart';
@@ -34,9 +38,18 @@ class QuotationProvider extends ChangeNotifier {
   Resource<PaymentQuote> _quotation = Resource(data: null, isLoading: false, error: null);
   late OrganizationsProvider _organizations;
   bool _isLoaded = false;
+  bool _organizationAttached = false;
+  PaymentIntent? _pendingIntent;
+  String? _lastRequestSignature;
+  Timer? _debounceTimer;
+  Timer? _expirationTimer;
+  bool _autoRefreshEnabled = true;
+
+  static const _inputDebounce = Duration(milliseconds: 500);
+  static const _expiryGracePeriod = Duration(seconds: 1);
 
   void update(
-    OrganizationsProvider venue, 
+    OrganizationsProvider venue,
     PaymentAmountProvider payment,
     WalletsProvider wallets,
     PaymentFlowProvider flow,
@@ -44,44 +57,65 @@ class QuotationProvider extends ChangeNotifier {
     PaymentMethodsProvider methods,
   ) {
     _organizations = venue;
-    final t = flow.selectedType;
+    _organizationAttached = true;
-    final method = methods.methods.firstWhereOrNull((m) => m.type == t);
+    _pendingIntent = _buildIntent(
-    if ((wallets.selectedWallet != null) && (method != null)) {
+      payment: payment,
-      final customer = _buildCustomer(
+      wallets: wallets,
-        recipient: recipients.currentObject,
+      flow: flow,
-        method: method,
+      recipients: recipients,
-      );
+      methods: methods,
-      getQuotation(PaymentIntent(
+    );
-        kind: PaymentKind.payout,
+    _scheduleQuotationRefresh();
-        amount: Money(
-          amount: payment.amount.toString(), 
-          // TODO: adapt to possible other sources
-          currency: currencyCodeToString(wallets.selectedWallet!.currency),
-        ),
-        destination: method.data,
-        source: ManagedWalletPaymentMethod(
-          managedWalletRef: wallets.selectedWallet!.id,
-        ),
-        fx: FxIntent(
-          pair: CurrencyPair(
-            base: currencyCodeToString(wallets.selectedWallet!.currency), 
-            quote: 'RUB', // TODO: exentd target currencies
-          ),
-          side: FxSide.sellBaseBuyQuote,
-        ),
-        settlementMode: payment.payerCoversFee ? SettlementMode.fixReceived : SettlementMode.fixSource,
-        customer: customer,
-      ));
-    }
   }
 
-  PaymentQuote? get quotation => _quotation.data;
+  PaymentQuote? get quotation => hasQuoteForCurrentIntent ? _quotation.data : null;
+  bool get isLoading => _quotation.isLoading;
+  Exception? get error => _quotation.error;
+  bool get autoRefreshEnabled => _autoRefreshEnabled;
+  bool get canRequestQuote => _organizationAttached && _pendingIntent != null && _organizations.isOrganizationSet;
 
-  bool get isReady => _isLoaded && !_quotation.isLoading && _quotation.error == null;
+  bool get _isExpired {
+    final remaining = timeToExpire;
+    return remaining != null && remaining <= Duration.zero;
+  }
 
-  Asset? get fee => quotation == null ? null : createAsset(quotation!.expectedFeeTotal!.currency, quotation!.expectedFeeTotal!.amount);
+  bool get hasQuoteForCurrentIntent {
-  Asset? get total => quotation == null ? null : createAsset(quotation!.debitAmount!.currency, quotation!.debitAmount!.amount);
+    if (_pendingIntent == null || _lastRequestSignature == null) return false;
-  Asset? get recipientGets => quotation == null ? null : createAsset(quotation!.expectedSettlementAmount!.currency, quotation!.expectedSettlementAmount!.amount);
+    return _lastRequestSignature == _signature(_pendingIntent!);
+  }
+
+  bool get hasLiveQuote =>
+      _isLoaded &&
+      !_isExpired &&
+      !_quotation.isLoading &&
+      _quotation.error == null &&
+      quotation != null;
+
+  Duration? get timeToExpire {
+    final expiresAt = _quoteExpiry;
+    if (expiresAt == null) return null;
+    final diff = expiresAt.difference(DateTime.now().toUtc());
+    return diff.isNegative ? Duration.zero : diff;
+  }
+
+  Asset? get fee => quotation == null
+      ? null
+      : createAsset(
+          quotation!.expectedFeeTotal!.currency,
+          quotation!.expectedFeeTotal!.amount,
+        );
+  Asset? get total => quotation == null
+      ? null
+      : createAsset(
+          quotation!.debitAmount!.currency,
+          quotation!.debitAmount!.amount,
+        );
+  Asset? get recipientGets => quotation == null
+      ? null
+      : createAsset(
+          quotation!.expectedSettlementAmount!.currency,
+          quotation!.expectedSettlementAmount!.amount,
+        );
 
   Customer _buildCustomer({
     required Recipient? recipient,
@@ -140,19 +174,127 @@ class QuotationProvider extends ChangeNotifier {
     notifyListeners();
   }
 
-  Future<PaymentQuote?> getQuotation(PaymentIntent intent) async {
+  void refreshNow({bool force = true}) {
-    if (!_organizations.isOrganizationSet) throw StateError('Organization is not set');
+    _debounceTimer?.cancel();
+    if (!_organizationAttached) return;
+    if (_pendingIntent == null) {
+      _reset();
+      return;
+    }
+    unawaited(_requestQuotation(_pendingIntent!, force: force));
+  }
+
+  void setAutoRefresh(bool enabled) {
+    if (!_organizationAttached) return;
+    if (_autoRefreshEnabled == enabled) return;
+    _autoRefreshEnabled = enabled;
+    if (_autoRefreshEnabled && (!hasLiveQuote || _isExpired) && _pendingIntent != null) {
+      unawaited(_requestQuotation(_pendingIntent!, force: true));
+    } else {
+      _startExpirationTimer();
+      notifyListeners();
+    }
+  }
+
+  @override
+  void dispose() {
+    _debounceTimer?.cancel();
+    _expirationTimer?.cancel();
+    super.dispose();
+  }
+
+  PaymentIntent? _buildIntent({
+    required PaymentAmountProvider payment,
+    required WalletsProvider wallets,
+    required PaymentFlowProvider flow,
+    required RecipientsProvider recipients,
+    required PaymentMethodsProvider methods,
+  }) {
+    if (!_organizationAttached || !_organizations.isOrganizationSet) return null;
+    final type = flow.selectedType;
+    final method = methods.methods.firstWhereOrNull((m) => m.type == type);
+    final wallet = wallets.selectedWallet;
+
+    if (wallet == null || method == null) return null;
+
+    final customer = _buildCustomer(
+      recipient: recipients.currentObject,
+      method: method,
+    );
+
+    return PaymentIntent(
+      kind: PaymentKind.payout,
+      amount: Money(
+        amount: payment.amount.toString(),
+        // TODO: adapt to possible other sources
+        currency: currencyCodeToString(wallet.currency),
+      ),
+      destination: method.data,
+      source: ManagedWalletPaymentMethod(
+        managedWalletRef: wallet.id,
+      ),
+      fx: FxIntent(
+        pair: CurrencyPair(
+          base: currencyCodeToString(wallet.currency),
+          quote: 'RUB', // TODO: exentd target currencies
+        ),
+        side: FxSide.sellBaseBuyQuote,
+      ),
+      settlementMode: payment.payerCoversFee ? SettlementMode.fixReceived : SettlementMode.fixSource,
+      customer: customer,
+    );
+  }
+
+  void _scheduleQuotationRefresh() {
+    _debounceTimer?.cancel();
+    if (_pendingIntent == null) {
+      _reset();
+      return;
+    }
+
+    _debounceTimer = Timer(_inputDebounce, () {
+      unawaited(_requestQuotation(_pendingIntent!, force: false));
+    });
+  }
+
+  Future<PaymentQuote?> _requestQuotation(PaymentIntent intent, {required bool force}) async {
+    if (!_organizationAttached || !_organizations.isOrganizationSet) {
+      _reset();
+      return null;
+    }
+
+    final destinationType = intent.destination?.type;
+    if (destinationType == PaymentType.bankAccount) {
+      _setResource(
+        _quotation.copyWith(
+          data: null,
+          isLoading: false,
+          error: Exception('Unsupported payment endpoint type: $destinationType'),
+        ),
+      );
+      return null;
+    }
+
+    final signature = _signature(intent);
+    final isSameIntent = _lastRequestSignature == signature;
+    if (!force && isSameIntent && hasLiveQuote) {
+      _startExpirationTimer();
+      return _quotation.data;
+    }
+
+    _setResource(_quotation.copyWith(isLoading: true, error: null));
     try {
-      _quotation = _quotation.copyWith(isLoading: true, error: null);
       final response = await QuotationService.getQuotation(
-        _organizations.current.id, 
+        _organizations.current.id,
         QuotePaymentRequest(
           idempotencyKey: Uuid().v4(),
           intent: intent.toDTO(),
         ),
       );
       _isLoaded = true;
+      _lastRequestSignature = signature;
       _setResource(_quotation.copyWith(data: response, isLoading: false, error: null));
+      _startExpirationTimer();
     } catch (e) {
       _setResource(_quotation.copyWith(
         data: null,
@@ -160,13 +302,68 @@ class QuotationProvider extends ChangeNotifier {
         isLoading: false,
       ));
     }
-    notifyListeners();
     return _quotation.data;
   }
 
-  void reset() {
+  void _startExpirationTimer() {
-    _setResource(Resource(data: null, isLoading: false, error: null));
+    _expirationTimer?.cancel();
+    final remaining = timeToExpire;
+    if (remaining == null) return;
+
+    final triggerOffset = _autoRefreshEnabled ? _expiryGracePeriod : Duration.zero;
+    final duration = remaining > triggerOffset ? remaining - triggerOffset : Duration.zero;
+    _expirationTimer = Timer(duration, () {
+      if (_autoRefreshEnabled && _pendingIntent != null) {
+        unawaited(_requestQuotation(_pendingIntent!, force: true));
+      } else {
+        notifyListeners();
+      }
+    });
+  }
+
+  void _reset() {
+    _debounceTimer?.cancel();
+    _expirationTimer?.cancel();
+    _pendingIntent = null;
+    _lastRequestSignature = null;
     _isLoaded = false;
-    notifyListeners();
+    _setResource(Resource(data: null, isLoading: false, error: null));
+  }
+
+  DateTime? get _quoteExpiry {
+    final expiresAt = quotation?.fxQuote?.expiresAtUnixMs;
+    if (expiresAt == null) return null;
+    return DateTime.fromMillisecondsSinceEpoch(expiresAt, isUtc: true);
+  }
+
+  String _signature(PaymentIntent intent) {
+    try {
+      return jsonEncode(intent.toDTO().toJson());
+    } catch (_) {
+      return jsonEncode({
+        'kind': intent.kind.toString(),
+        'source': intent.source?.type.toString(),
+        'destination': intent.destination?.type.toString(),
+        'amount': {
+          'value': intent.amount?.amount,
+          'currency': intent.amount?.currency,
+        },
+        'fx': intent.fx == null
+            ? null
+            : {
+                'pair': {
+                  'base': intent.fx?.pair?.base,
+                  'quote': intent.fx?.pair?.quote,
+                },
+                'side': intent.fx?.side.toString(),
+              },
+        'settlementMode': intent.settlementMode.toString(),
+        'customer': intent.customer?.id,
+      });
+    }
+  }
+
+  void reset() {
+    _reset();
   }
 }

frontend/pweb/lib/l10n/en.arb

@@ -383,6 +383,19 @@
   "payout": "Payout",
   "sendTo": "Send Payout To",
   "send": "Send Payout",
+  "quoteUnavailable": "Waiting for a quote...",
+  "quoteUpdating": "Refreshing quote...",
+  "quoteExpiresIn": "Quote expires in {time}",
+  "@quoteExpiresIn": {
+    "placeholders": {
+      "time": {
+        "type": "String"
+      }
+    }
+  },
+  "quoteExpired": "Quote expired, request a new one",
+  "quoteAutoRefresh": "Auto-refresh quote",
+  "quoteErrorGeneric": "Could not refresh quote, try again later",
   "recipientPaysFee": "Recipient pays the fee",
 
   "sentAmount": "Sent amount: {amount}",

frontend/pweb/lib/l10n/ru.arb

@@ -383,6 +383,19 @@
   "payout": "Выплата",
   "sendTo": "Отправить выплату",
   "send": "Отправить выплату",
+  "quoteUnavailable": "Ожидание котировки...",
+  "quoteUpdating": "Обновляем котировку...",
+  "quoteExpiresIn": "Котировка истекает через {time}",
+  "@quoteExpiresIn": {
+    "placeholders": {
+      "time": {
+        "type": "String"
+      }
+    }
+  },
+  "quoteExpired": "Срок котировки истек, запросите новую",
+  "quoteAutoRefresh": "Автообновление котировки",
+  "quoteErrorGeneric": "Не удалось обновить котировку, повторите позже",
   "recipientPaysFee": "Получатель оплачивает комиссию",
 
   "sentAmount": "Отправленная сумма: {amount}",

frontend/pweb/lib/models/button_state.dart

@@ -0,0 +1 @@
+enum ButtonState { enabled, disabled, loading }

frontend/pweb/lib/pages/dashboard/payouts/amount.dart

@@ -3,6 +3,7 @@ import 'package:flutter/material.dart';
 import 'package:provider/provider.dart';
 
 import 'package:pshared/provider/payment/amount.dart';
+import 'package:pshared/provider/payment/quotation.dart';
 import 'package:pshared/utils/currency.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
@@ -17,6 +18,7 @@ class PaymentAmountWidget extends StatefulWidget {
 
 class _PaymentAmountWidgetState extends State<PaymentAmountWidget> {
   late final TextEditingController _controller;
+  late final FocusNode _focusNode;
   bool _isSyncingText = false;
 
   @override
@@ -24,10 +26,13 @@ class _PaymentAmountWidgetState extends State<PaymentAmountWidget> {
     super.initState();
     final initialAmount = context.read<PaymentAmountProvider>().amount;
     _controller = TextEditingController(text: amountToString(initialAmount));
+    _focusNode = FocusNode()..addListener(_handleFocusChange);
   }
 
   @override
   void dispose() {
+    _focusNode.removeListener(_handleFocusChange);
+    _focusNode.dispose();
     _controller.dispose();
     super.dispose();
   }
@@ -56,6 +61,14 @@ class _PaymentAmountWidgetState extends State<PaymentAmountWidget> {
     }
   }
 
+  void _handleFocusChange() {
+    if (_focusNode.hasFocus) return;
+    final quotationProvider = context.read<QuotationProvider>();
+    if (quotationProvider.canRequestQuote) {
+      quotationProvider.refreshNow(force: false);
+    }
+  }
+
   @override
   Widget build(BuildContext context) {
     final amount = context.select<PaymentAmountProvider, double>((provider) => provider.amount);
@@ -63,6 +76,7 @@ class _PaymentAmountWidgetState extends State<PaymentAmountWidget> {
 
     return TextField(
       controller: _controller,
+      focusNode: _focusNode,
       keyboardType: const TextInputType.numberWithOptions(decimal: true),
       decoration: InputDecoration(
         labelText: AppLocalizations.of(context)!.amount,

frontend/pweb/lib/pages/payment_methods/page.dart

@@ -6,6 +6,7 @@ import 'package:pshared/models/payment/type.dart';
 import 'package:pshared/models/recipient/recipient.dart';
 import 'package:pshared/provider/payment/flow.dart';
 import 'package:pshared/provider/payment/provider.dart';
+import 'package:pshared/provider/payment/quotation.dart';
 import 'package:pshared/provider/recipient/pmethods.dart';
 import 'package:pshared/provider/recipient/provider.dart';
 import 'package:pshared/provider/payment/wallets.dart';
@@ -14,6 +15,8 @@ import 'package:pweb/pages/payment_methods/payment_page/body.dart';
 import 'package:pweb/widgets/sidebar/destinations.dart';
 import 'package:pweb/services/posthog.dart';
 
+import 'package:pweb/generated/i18n/app_localizations.dart';
+
 
 class PaymentPage extends StatefulWidget {
   final ValueChanged<Recipient?>? onBack;
@@ -81,8 +84,20 @@ class _PaymentPageState extends State<PaymentPage> {
   void _handleSendPayment() {
     final flowProvider = context.read<PaymentFlowProvider>();
     final paymentProvider = context.read<PaymentProvider>();
+    final quotationProvider = context.read<QuotationProvider>();
+    final loc = AppLocalizations.of(context)!;
     if (paymentProvider.isLoading) return;
 
+    if (!quotationProvider.hasLiveQuote) {
+      if (quotationProvider.canRequestQuote) {
+        quotationProvider.refreshNow();
+      }
+      ScaffoldMessenger.of(context).showSnackBar(
+        SnackBar(content: Text(quotationProvider.canRequestQuote ? loc.quoteExpired : loc.quoteUnavailable)),
+      );
+      return;
+    }
+
     paymentProvider.pay().then((_) {
       PosthogService.paymentInitiated(method: flowProvider.selectedType);
     }).catchError((error) {

frontend/pweb/lib/pages/payment_methods/payment_page/page.dart

@@ -1,13 +1,19 @@
 import 'package:flutter/material.dart';
 
+import 'package:provider/provider.dart';
+
 import 'package:pshared/models/payment/wallet.dart';
 import 'package:pshared/models/recipient/recipient.dart';
+import 'package:pshared/provider/payment/provider.dart';
+import 'package:pshared/provider/payment/quotation.dart';
 import 'package:pshared/provider/recipient/provider.dart';
-import 'package:pweb/pages/dashboard/payouts/form.dart';
 
+import 'package:pweb/models/button_state.dart';
+import 'package:pweb/pages/dashboard/payouts/form.dart';
 import 'package:pweb/pages/payment_methods/payment_page/back_button.dart';
 import 'package:pweb/pages/payment_methods/payment_page/header.dart';
 import 'package:pweb/pages/payment_methods/payment_page/method_selector.dart';
+import 'package:pweb/pages/payment_methods/payment_page/quote/quote_status.dart';
 import 'package:pweb/pages/payment_methods/payment_page/send_button.dart';
 import 'package:pweb/pages/payment_methods/widgets/payment_info_section.dart';
 import 'package:pweb/pages/payment_methods/widgets/recipient_section.dart';
@@ -94,8 +100,21 @@ class PaymentPageContent extends StatelessWidget {
                   PaymentInfoSection(dimensions: dimensions),
                   SizedBox(height: dimensions.paddingLarge),
                   const PaymentFormWidget(),
-                  SizedBox(height: dimensions.paddingXXXLarge),
+                  SizedBox(height: dimensions.paddingLarge),
-                  SendButton(onPressed: onSend),
+                  const QuoteStatus(),
+                  SizedBox(height: dimensions.paddingXXLarge),
+                  Consumer2<QuotationProvider, PaymentProvider>(
+                    builder: (context, quotation, payment, _) {
+                      final canSend = quotation.hasLiveQuote && !payment.isLoading;
+                      final state = payment.isLoading
+                          ? ButtonState.loading
+                          : (canSend ? ButtonState.enabled : ButtonState.disabled);
+                      return SendButton(
+                        onPressed: canSend ? onSend : null,
+                        state: state,
+                      );
+                    },
+                  ),
                   SizedBox(height: dimensions.paddingLarge),
                 ],
               ),

frontend/pweb/lib/pages/payment_methods/payment_page/quote/actions.dart

@@ -0,0 +1,54 @@
+import 'package:flutter/material.dart';
+
+import 'package:pweb/utils/dimensions.dart';
+
+
+class QuoteStatusActions extends StatelessWidget {
+  final bool isLoading;
+  final bool canRefresh;
+  final bool autoRefreshEnabled;
+  final ValueChanged<bool>? onToggleAutoRefresh;
+  final VoidCallback? onRefresh;
+  final String autoRefreshLabel;
+  final String refreshLabel;
+  final AppDimensions dimensions;
+  final TextTheme theme;
+
+  const QuoteStatusActions({
+    super.key,
+    required this.isLoading,
+    required this.canRefresh,
+    required this.autoRefreshEnabled,
+    required this.onToggleAutoRefresh,
+    required this.onRefresh,
+    required this.autoRefreshLabel,
+    required this.refreshLabel,
+    required this.dimensions,
+    required this.theme,
+  });
+
+  @override
+  Widget build(BuildContext context) => Row(
+        children: [
+          Expanded(
+            child: SwitchListTile.adaptive(
+              contentPadding: EdgeInsets.zero,
+              value: autoRefreshEnabled,
+              title: Text(autoRefreshLabel, style: theme.bodyMedium),
+              onChanged: onToggleAutoRefresh,
+            ),
+          ),
+          TextButton.icon(
+            onPressed: canRefresh ? onRefresh : null,
+            icon: isLoading
+                ? SizedBox(
+                    width: 16,
+                    height: 16,
+                    child: CircularProgressIndicator(strokeWidth: 2),
+                  )
+                : const Icon(Icons.refresh),
+            label: Text(refreshLabel),
+          ),
+        ],
+      );
+}

frontend/pweb/lib/pages/payment_methods/payment_page/quote/message.dart

@@ -0,0 +1,49 @@
+import 'package:flutter/material.dart';
+
+import 'package:pweb/utils/dimensions.dart';
+
+
+class QuoteStatusMessage extends StatelessWidget {
+  final String statusText;
+  final String? errorText;
+  final bool showDetails;
+  final VoidCallback onToggleDetails;
+  final AppDimensions dimensions;
+  final TextTheme theme;
+  final String showLabel;
+  final String hideLabel;
+
+  const QuoteStatusMessage({
+    super.key,
+    required this.statusText,
+    required this.errorText,
+    required this.showDetails,
+    required this.onToggleDetails,
+    required this.dimensions,
+    required this.theme,
+    required this.showLabel,
+    required this.hideLabel,
+  });
+
+  @override
+  Widget build(BuildContext context) => Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(statusText, style: theme.bodyMedium),
+          if (errorText != null) ...[
+            SizedBox(height: dimensions.paddingSmall),
+            TextButton(
+              onPressed: onToggleDetails,
+              child: Text(showDetails ? hideLabel : showLabel),
+            ),
+            if (showDetails) ...[
+              SizedBox(height: dimensions.paddingSmall),
+              Text(
+                errorText!,
+                style: theme.bodySmall,
+              ),
+            ],
+          ],
+        ],
+      );
+}

frontend/pweb/lib/pages/payment_methods/payment_page/quote/quote_status.dart

@@ -0,0 +1,115 @@
+import 'package:flutter/material.dart';
+
+import 'package:provider/provider.dart';
+
+import 'package:pshared/provider/payment/quotation.dart';
+
+import 'package:pweb/generated/i18n/app_localizations.dart';
+import 'package:pweb/pages/payment_methods/payment_page/quote/actions.dart';
+import 'package:pweb/pages/payment_methods/payment_page/quote/message.dart';
+import 'package:pweb/utils/dimensions.dart';
+
+
+class QuoteStatus extends StatefulWidget {
+  const QuoteStatus({super.key});
+
+  @override
+  State<QuoteStatus> createState() => _QuoteStatusState();
+}
+
+class _QuoteStatusState extends State<QuoteStatus> {
+  bool _showDetails = false;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final dimensions = AppDimensions();
+    final loc = AppLocalizations.of(context)!;
+
+    return Consumer<QuotationProvider>(
+      builder: (context, provider, _) {
+        final statusText = _statusText(provider, loc);
+        final canRefresh = provider.canRequestQuote && !provider.isLoading;
+        final refreshLabel = provider.isLoading ? loc.quoteUpdating : loc.retry;
+        final error = provider.error;
+        final backgroundColor = theme.colorScheme.surfaceContainerHighest.withValues(alpha: 0.3);
+
+        return Container(
+          width: double.infinity,
+          padding: EdgeInsets.all(dimensions.paddingMedium),
+          decoration: BoxDecoration(
+            color: backgroundColor,
+            borderRadius: BorderRadius.circular(dimensions.borderRadiusSmall),
+          ),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              QuoteStatusMessage(
+                statusText: statusText,
+                errorText: error?.toString(),
+                showDetails: _showDetails,
+                onToggleDetails: () => setState(() => _showDetails = !_showDetails),
+                dimensions: dimensions,
+                theme: theme.textTheme,
+                showLabel: loc.showDetails,
+                hideLabel: loc.hideDetails,
+              ),
+              SizedBox(height: dimensions.paddingSmall),
+              QuoteStatusActions(
+                isLoading: provider.isLoading,
+                canRefresh: canRefresh,
+                autoRefreshEnabled: provider.autoRefreshEnabled,
+                onToggleAutoRefresh: provider.canRequestQuote
+                    ? (value) => context.read<QuotationProvider>().setAutoRefresh(value)
+                    : null,
+                onRefresh: canRefresh ? () => context.read<QuotationProvider>().refreshNow() : null,
+                autoRefreshLabel: loc.quoteAutoRefresh,
+                refreshLabel: refreshLabel,
+                dimensions: dimensions,
+                theme: theme.textTheme,
+              ),
+            ],
+          ),
+        );
+      },
+    );
+  }
+
+  String _statusText(QuotationProvider provider, AppLocalizations loc) {
+    if (provider.error != null) {
+      return loc.quoteErrorGeneric;
+    }
+
+    if (!provider.canRequestQuote) {
+      return loc.quoteUnavailable;
+    }
+
+    if (provider.isLoading) {
+      return loc.quoteUpdating;
+    }
+
+    if (provider.hasLiveQuote) {
+      final remaining = provider.timeToExpire;
+      if (remaining != null) {
+        return loc.quoteExpiresIn(_formatDuration(remaining));
+      }
+    }
+
+    if (provider.hasQuoteForCurrentIntent) {
+      return loc.quoteExpired;
+    }
+
+    return loc.quoteUnavailable;
+  }
+
+  String _formatDuration(Duration duration) {
+    final minutes = duration.inMinutes;
+    final seconds = duration.inSeconds.remainder(60).toString().padLeft(2, '0');
+    if (duration.inHours > 0) {
+      final hours = duration.inHours;
+      final mins = minutes.remainder(60).toString().padLeft(2, '0');
+      return '$hours:$mins:$seconds';
+    }
+    return '$minutes:$seconds';
+  }
+}

frontend/pweb/lib/pages/payment_methods/payment_page/send_button.dart

@@ -1,19 +1,31 @@
 import 'package:flutter/material.dart';
 
+import 'package:pweb/models/button_state.dart';
 import 'package:pweb/utils/dimensions.dart';
 
 import 'package:pweb/generated/i18n/app_localizations.dart';
 
 
 class SendButton extends StatelessWidget {
-  final VoidCallback onPressed;
+  final VoidCallback? onPressed;
+  final ButtonState state;
 
-  const SendButton({super.key, required this.onPressed});
+  const SendButton({
+    super.key,
+    required this.onPressed,
+    this.state = ButtonState.enabled,
+  });
 
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
     final dimensions = AppDimensions();
+    final isLoading = state == ButtonState.loading;
+    final isActive = state == ButtonState.enabled && onPressed != null && !isLoading;
+    final backgroundColor = isActive
+        ? theme.colorScheme.primary
+        : theme.colorScheme.primary.withValues(alpha: 0.5);
+    final textColor = theme.colorScheme.onSecondary.withValues(alpha: isActive ? 1 : 0.7);
 
     return Center(
       child: SizedBox(
@@ -21,24 +33,33 @@ class SendButton extends StatelessWidget {
         height: dimensions.buttonHeight,
         child: InkWell(
           borderRadius: BorderRadius.circular(dimensions.borderRadiusSmall),
-          onTap: onPressed,
+          onTap: isActive ? onPressed : null,
           child: Container(
             decoration: BoxDecoration(
-              color: theme.colorScheme.primary,
+              color: backgroundColor,
               borderRadius: BorderRadius.circular(dimensions.borderRadiusSmall),
             ),
             child: Center(
-              child: Text(
+              child: isLoading
-                AppLocalizations.of(context)!.send,
+                  ? SizedBox(
-                style: theme.textTheme.bodyLarge?.copyWith(
+                      height: dimensions.iconSizeSmall,
-                  color: theme.colorScheme.onSecondary,
+                      width: dimensions.iconSizeSmall,
-                  fontWeight: FontWeight.w600,
+                      child: CircularProgressIndicator(
-                ),
+                        strokeWidth: 2,
-              ),
+                        valueColor: AlwaysStoppedAnimation<Color>(textColor),
+                      ),
+                    )
+                  : Text(
+                      AppLocalizations.of(context)!.send,
+                      style: theme.textTheme.bodyLarge?.copyWith(
+                        color: textColor,
+                        fontWeight: FontWeight.w600,
+                      ),
+                    ),
             ),
           ),
         ),
       ),
     );
   }
-}
+}

frontend/pweb/lib/utils/payment/dropdown.dart

@@ -23,7 +23,7 @@ class PaymentMethodDropdown extends StatelessWidget {
   @override
   Widget build(BuildContext context) => DropdownButtonFormField<Wallet>(
     dropdownColor: Theme.of(context).colorScheme.onSecondary,
-    value: _getSelectedMethod(),
+    initialValue: _getSelectedMethod(),
     decoration: InputDecoration(
       labelText: AppLocalizations.of(context)!.whereGetMoney,
       border: OutlineInputBorder(borderRadius: BorderRadius.circular(8)),