quotation rate display

frontend/pshared/lib/models/asset.dart

@@ -0,0 +1,18 @@
+import 'package:pshared/models/currency.dart';
+import 'package:pshared/utils/currency.dart';
+
+
+class Asset {
+  final Currency currency;
+  final double amount;
+
+  const Asset({
+    required this.currency,
+    required this.amount,
+  });
+}
+
+Asset createAsset(String currencyCode, String amount) => Asset(
+  currency: currencyStringToCode(currencyCode),
+  amount: double.parse(amount),
+);

frontend/pshared/lib/models/currency.dart

@@ -0,0 +1 @@
+enum Currency {usd, eur, rub, usdt, usdc}

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

@@ -0,0 +1,20 @@
+import 'package:flutter/material.dart';
+
+
+class PaymentAmountProvider with ChangeNotifier {
+  double _amount = 10.0;
+  bool _payerCoversFee = true;
+
+  double get amount => _amount;
+  bool get payerCoversFee => _payerCoversFee;
+
+  void setAmount(double value) {
+    _amount = value;
+    notifyListeners();
+  }
+
+  void setPayerCoversFee(bool value) {
+    _payerCoversFee = value;
+    notifyListeners();
+  }
+}

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

@@ -1,5 +1,17 @@
 import 'package:flutter/material.dart';
+import 'package:pshared/models/asset.dart';
 
+import 'package:uuid/uuid.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';
+import 'package:pshared/models/payment/kind.dart';
+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';
@@ -7,7 +19,6 @@ import 'package:pshared/models/payment/quote.dart';
 import 'package:pshared/provider/organizations.dart';
 import 'package:pshared/provider/resource.dart';
 import 'package:pshared/service/payment/quotation.dart';
-import 'package:uuid/uuid.dart';
 
 
 class QuotationProvider extends ChangeNotifier {
@@ -15,14 +26,46 @@ class QuotationProvider extends ChangeNotifier {
   late OrganizationsProvider _organizations;
   bool _isLoaded = false;
 
-  void update(OrganizationsProvider venue) {
+  void update(OrganizationsProvider venue, PaymentAmountProvider payment) {
     _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',
+        ),
+        side: FxSide.sellBaseBuyQuote,
+      ),
+      settlementMode: payment.payerCoversFee ? SettlementMode.fixReceived : SettlementMode.fixSource,
+    ));
   }
 
   PaymentQuote? get quotation => _quotation.data;
 
   bool get isReady => _isLoaded && !_quotation.isLoading && _quotation.error == null;
 
+  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);
+
+  void _setResource(Resource<PaymentQuote> quotation) {
+    _quotation = quotation;
+    notifyListeners();
+  }
+
   Future<PaymentQuote?> getQuotation(PaymentIntent intent) async {
     if (!_organizations.isOrganizationSet) throw StateError('Organization is not set');
     try {
@@ -35,19 +78,20 @@ class QuotationProvider extends ChangeNotifier {
         ),
       );
       _isLoaded = true;
-      _quotation = _quotation.copyWith(data: response, isLoading: false);
+      _setResource(_quotation.copyWith(data: response, isLoading: false, error: null));
     } catch (e) {
-      _quotation = _quotation.copyWith(
+      _setResource(_quotation.copyWith(
+        data: null,
         error: e is Exception ? e : Exception(e.toString()),
         isLoading: false,
-      );
+      ));
     }
     notifyListeners();
     return _quotation.data;
   }
 
   void reset() {
-    _quotation = Resource(data: null, isLoading: false, error: null);
+    _setResource(Resource(data: null, isLoading: false, error: null));
     _isLoaded = false;
     notifyListeners();
   }

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

@@ -4,8 +4,8 @@ import 'package:pshared/api/requests/payment/quote.dart';
 import 'package:pshared/api/responses/payment/quotation.dart';
 import 'package:pshared/data/mapper/payment/payment_quote.dart';
 import 'package:pshared/models/payment/quote.dart';
+import 'package:pshared/service/authorization/service.dart';
 import 'package:pshared/service/services.dart';
-import 'package:pshared/utils/http/requests.dart';
 
 
 class QuotationService {
@@ -14,7 +14,11 @@ class QuotationService {
 
   static Future<PaymentQuote> getQuotation(String organizationRef, QuotePaymentRequest request) async {
     _logger.fine('Quoting payment for organization $organizationRef');
-    final response = await getPOSTResponse(_objectType, '/quote/$organizationRef', request.toJson());
+    final response = await AuthorizationService.getPOSTResponse(
+      _objectType, 
+      '/quote/$organizationRef', 
+      request.toJson(),
+    );
     return PaymentQuoteResponse.fromJson(response).quote.toDomain();
   }
 }

frontend/pshared/lib/utils/currency.dart

@@ -1,22 +1,64 @@
-String currencyCodeToSymbol(String currencyCode) {
+import 'package:flutter/material.dart';
+
+import 'package:pshared/models/asset.dart';
+import 'package:pshared/models/currency.dart';
+
+
+String currencyCodeToSymbol(Currency currencyCode) {
   switch (currencyCode) {
-    case 'USD':
+    case Currency.usd:
       return '\$';
-    case 'PLN':
-      return 'zł';
-    case 'EUR':
-      return '€';
-    case 'GBP':
-      return '£';
-    case 'HUF':
-      return 'Ft';
-    case 'RUB':
+    case Currency.usdt:
+      return '₮';
+    case Currency.usdc:
+      return '\$';
+    case Currency.rub:
       return '₽';
-    default:
-      return currencyCode;
+    case Currency.eur:
+      return '€';
   }
 }
 
-String currencyToString(String currencyCode, double amount) {
-  return '${currencyCodeToSymbol(currencyCode)}\u00A0${amount.toStringAsFixed(2)}';
+String amountToString(double amount) {
+  return amount.toStringAsFixed(2);
+}
+
+String currencyToString(Currency currencyCode, double amount) {
+  return '${currencyCodeToSymbol(currencyCode)}\u00A0${amountToString(amount)}';
+}
+
+String assetToString(Asset asset) {
+  return currencyToString(asset.currency, asset.amount);
+}
+
+Currency currencyStringToCode(String currencyCode) {
+  switch (currencyCode) {
+    case 'USD':
+      return Currency.usd;
+    case 'USDT':
+      return Currency.usdt;
+    case 'USDC':
+      return Currency.usdc;
+    case 'RUB':
+      return Currency.rub;
+    case 'EUR':
+      return Currency.eur;
+    default:
+      throw ArgumentError('Unknown currency code: $currencyCode');
+  }
+}
+
+IconData iconForCurrencyType(Currency currencyCode) {
+  switch (currencyCode) {
+    case Currency.usd:
+      return Icons.currency_exchange;
+    case Currency.eur:
+      return Icons.currency_exchange;
+    case Currency.rub:
+      return Icons.currency_ruble;
+    case Currency.usdt:
+      return Icons.currency_exchange;
+    case Currency.usdc:
+      return Icons.money;
+  }
 }