Connect customer quotations and payment execution to Sendico (#50)

frontend/app/lib/l10n/en.arb

@@ -277,5 +277,17 @@
   "kycOperationMaximum": "Per operation maximum",
   "kycErrorAccess": "Verification is unavailable for this account. Contact support if this continues.",
   "kycUpgradePendingTitle": "Limits upgrade pending",
-  "kycUpgradePendingBody": "Your identity review is approved. We are waiting for confirmation of the limits upgrade. You do not need to submit your photos again."
+  "kycUpgradePendingBody": "Your identity review is approved. We are waiting for confirmation of the limits upgrade. You do not need to submit your photos again.",
+  "wNoPayoutMethod": "No payout destination is set up for this account. Contact support to add one.",
+  "wNoFundingMethod": "No funding method is set up for this account. Contact support for funding instructions.",
+  "wLivePending": "Your payment is awaiting a final outcome. Refresh to see its latest status and balance.",
+  "wLiveFailed": "Your payment did not complete. Refresh your accounts to see the current available balance.",
+  "wLiveQuoteNotice": "Quote expires in {seconds} seconds.",
+  "@wLiveQuoteNotice": {
+    "placeholders": {
+      "seconds": {
+        "type": "int"
+      }
+    }
+  }
 }

frontend/app/lib/l10n/ru.arb

@@ -277,5 +277,17 @@
   "kycOperationMaximum": "Максимум на операцию",
   "kycErrorAccess": "Проверка недоступна для этого аккаунта. Если это повторяется, обратитесь в поддержку.",
   "kycUpgradePendingTitle": "Ожидается повышение лимитов",
-  "kycUpgradePendingBody": "Проверка личности одобрена. Ожидается подтверждение повышения лимитов. Отправлять фото повторно не нужно."
+  "kycUpgradePendingBody": "Проверка личности одобрена. Ожидается подтверждение повышения лимитов. Отправлять фото повторно не нужно.",
+  "wNoPayoutMethod": "Для этого счёта не настроен способ вывода. Обратитесь в поддержку.",
+  "wNoFundingMethod": "Для этого счёта не настроен способ пополнения. Обратитесь в поддержку за инструкциями.",
+  "wLivePending": "Ожидается окончательный результат платежа. Обновите страницу, чтобы проверить статус и баланс.",
+  "wLiveFailed": "Платёж не завершён. Обновите счета, чтобы проверить доступный баланс.",
+  "wLiveQuoteNotice": "Предложение истекает через {seconds} сек.",
+  "@wLiveQuoteNotice": {
+    "placeholders": {
+      "seconds": {
+        "type": "int"
+      }
+    }
+  }
 }

frontend/app/lib/main.dart

@@ -63,8 +63,11 @@ class _SxchngeAppState extends State<SxchngeApp> {
   late final _locale = widget.localeProvider ?? LocaleProvider();
 
   late final _analytics = widget.analyticsService ?? DummyAnalyticsService();
-  late final _factors =
+  late final _authFactors =
       widget.backend ?? widget.twoFactorService ?? DummyTwoFactorService();
+  late final _factors = _walletService is BackendWalletService
+      ? WalletFactorService(_walletService, _authFactors)
+      : _authFactors;
   late final _security = SecurityProvider(_factors, _analytics);
   late final _identity =
       widget.identityService ??
@@ -76,11 +79,16 @@ class _SxchngeAppState extends State<SxchngeApp> {
             ));
   late final _walletService =
       widget.walletService ??
-      DummyWalletService(
-        _identity,
-        initialLocale: _locale.locale.languageCode,
-        factors: _factors,
-      );
+      (widget.backend != null
+          ? BackendWalletService(
+              baseUri: widget.backend!.baseUri,
+              accessToken: () => widget.backend!.session?.accessToken,
+            )
+          : DummyWalletService(
+              _identity,
+              initialLocale: _locale.locale.languageCode,
+              factors: _authFactors,
+            ));
   late final _wallet = WalletProvider(
     _walletService,
     _analytics,
@@ -109,14 +117,21 @@ class _SxchngeAppState extends State<SxchngeApp> {
         : () => widget.backend!.session != null,
   )..routeInformationProvider.addListener(_routeChanged);
   String _previousPath = '/';
+  String? _walletCustomer;
 
   @override
   void initState() {
     super.initState();
     _previousPath = _router.routeInformationProvider.value.uri.path;
+    _walletCustomer = widget.backend?.session?.userId;
   }
 
   void _routeChanged() {
+    final customer = widget.backend?.session?.userId;
+    if (customer != _walletCustomer) {
+      _walletCustomer = customer;
+      _wallet.reset();
+    }
     final path = _router.routeInformationProvider.value.uri.path;
     if (path == '/' && _previousPath != '/' && _previousPath != '/two-factor') {
       _journeys.abandon(JourneyExit.navigation);
@@ -130,6 +145,9 @@ class _SxchngeAppState extends State<SxchngeApp> {
     _router.dispose();
     _journeys.dispose();
     _wallet.dispose();
+    if (_walletService is BackendWalletService) {
+      _walletService.close();
+    }
     _security.dispose();
     if (_identity is BackendIdentityService) {
       _identity.close();

frontend/app/lib/workspace/copy.dart

@@ -28,17 +28,25 @@ String statusText(AppLocalizations l, OperationStatus s) => switch (s) {
   OperationStatus.completed => l.wCompleted,
   OperationStatus.failed => l.wFailed,
 };
-String fundsText(AppLocalizations l, WalletOperation o) =>
-    switch ((o.status, o.quote.request.kind)) {
-      (OperationStatus.pending, TransferKind.topUp) => l.wPendingTopUp,
-      (OperationStatus.pending, TransferKind.exchange) => l.wPendingExchange,
-      (OperationStatus.pending, TransferKind.payout) => l.wPendingPayout,
-      (OperationStatus.completed, TransferKind.topUp) => l.wCompleteTopUp,
-      (OperationStatus.completed, TransferKind.exchange) => l.wCompleteExchange,
-      (OperationStatus.completed, TransferKind.payout) => l.wCompletePayout,
-      (OperationStatus.failed, TransferKind.topUp) => l.wFailedTopUp,
-      _ => l.wFailedOutgoing,
-    };
+String fundsText(
+  AppLocalizations l,
+  WalletOperation o, {
+  bool simulated = true,
+}) => !simulated && o.status == OperationStatus.pending
+    ? l.wLivePending
+    : !simulated && o.status == OperationStatus.failed
+    ? l.wLiveFailed
+    : switch ((o.status, o.quote.request.kind)) {
+        (OperationStatus.pending, TransferKind.topUp) => l.wPendingTopUp,
+        (OperationStatus.pending, TransferKind.exchange) => l.wPendingExchange,
+        (OperationStatus.pending, TransferKind.payout) => l.wPendingPayout,
+        (OperationStatus.completed, TransferKind.topUp) => l.wCompleteTopUp,
+        (OperationStatus.completed, TransferKind.exchange) =>
+          l.wCompleteExchange,
+        (OperationStatus.completed, TransferKind.payout) => l.wCompletePayout,
+        (OperationStatus.failed, TransferKind.topUp) => l.wFailedTopUp,
+        _ => l.wFailedOutgoing,
+      };
 String walletError(AppLocalizations l, WalletError e) => switch (e) {
   WalletError.invalidAmount => l.wInvalidAmount,
   WalletError.insufficientFunds => l.wInsufficient,

frontend/app/lib/workspace/operation.dart

@@ -97,7 +97,7 @@ class _OperationPageState extends State<OperationPage> {
                       ),
                       const SizedBox(height: 16),
                       Text(
-                        fundsText(l, o),
+                        fundsText(l, o, simulated: p.service.isSimulated),
                         style: TextStyle(
                           color: o.status == OperationStatus.failed
                               ? c.onErrorContainer

frontend/app/lib/workspace/transfer.dart

@@ -133,6 +133,15 @@ class TransferPageState extends State<TransferPage> {
       final t = Theme.of(context);
       final accounts = wallet.data?.accounts ?? [];
       final source = wallet.account(p.source);
+      final live = !wallet.service.isSimulated;
+      final expiresIn =
+          p.quote?.expiresAt.difference(DateTime.now()).inSeconds ?? 0;
+      final unavailableMethod =
+          live &&
+          ((widget.kind == TransferKind.payout &&
+                  (source?.payoutMethod.isEmpty ?? true)) ||
+              (widget.kind == TransferKind.topUp &&
+                  !(source?.canFund ?? false)));
       return SingleChildScrollView(
         padding: const EdgeInsets.all(24),
         child: Center(
@@ -207,7 +216,15 @@ class TransferPageState extends State<TransferPage> {
                       ] else if (p.quote != null) ...[
                         TransferSummary(quote: p.quote!),
                         const SizedBox(height: 16),
-                        Text(p.expired ? l.wExpired : l.wQuoteNotice),
+                        Text(
+                          p.expired
+                              ? l.wExpired
+                              : live
+                              ? l.wLiveQuoteNotice(
+                                  expiresIn < 0 ? 0 : expiresIn,
+                                )
+                              : l.wQuoteNotice,
+                        ),
                         const SizedBox(height: 20),
                         if (p.expired)
                           FilledButton(
@@ -299,21 +316,39 @@ class TransferPageState extends State<TransferPage> {
                           ),
                           if (widget.kind == TransferKind.payout) ...[
                             const SizedBox(height: 20),
-                            TextField(
-                              key: const ValueKey('transfer-recipient'),
-                              controller: _recipient,
-                              enabled: !p.busy,
-                              decoration: InputDecoration(
-                                labelText: l.wRecipient,
-                                hintText: l.wRecipientHint,
+                            if (live && source?.payoutMethod.isNotEmpty == true)
+                              InputDecorator(
+                                decoration: InputDecoration(
+                                  labelText: l.wRecipient,
+                                ),
+                                child: Text(source!.payoutLabel),
                               ),
-                              onChanged: (v) => p.change(recipient: v),
+                            if (!live)
+                              TextField(
+                                key: const ValueKey('transfer-recipient'),
+                                controller: _recipient,
+                                enabled: !p.busy,
+                                decoration: InputDecoration(
+                                  labelText: l.wRecipient,
+                                  hintText: l.wRecipientHint,
+                                ),
+                                onChanged: (v) => p.change(recipient: v),
+                              ),
+                          ],
+                          if (unavailableMethod) ...[
+                            const SizedBox(height: 12),
+                            Text(
+                              widget.kind == TransferKind.payout
+                                  ? l.wNoPayoutMethod
+                                  : l.wNoFundingMethod,
                             ),
                           ],
                           const SizedBox(height: 28),
                           FilledButton(
                             key: const ValueKey('transfer-review'),
-                            onPressed: p.busy ? null : p.review,
+                            onPressed: p.busy || unavailableMethod
+                                ? null
+                                : p.review,
                             child: Text(l.wReview),
                           ),
                           if (p.error == WalletError.limitExceeded)