refactor of money utils with new money2 package

2026-03-13 03:17:29 +03:00
parent b4eb1437f6
commit 0091191d97
72 changed files with 453 additions and 982 deletions
--- a/frontend/pshared/lib/data/mapper/money.dart
+++ b/frontend/pshared/lib/data/mapper/money.dart
@@ -1,17 +1,20 @@
+import 'package:money2/money2.dart';
+
 import 'package:pshared/data/dto/money.dart';
-import 'package:pshared/models/money.dart';
+import 'package:pshared/utils/money.dart';


 extension MoneyMapper on Money {
-  MoneyDTO toDTO() => MoneyDTO(
-    amount: amount,
-    currency: currency,
-  );
+  MoneyDTO toDTO() =>
+      MoneyDTO(amount: toDecimal().toString(), currency: currency.isoCode);
 }

 extension MoneyDTOMapper on MoneyDTO {
-  Money toDomain() => Money(
-    amount: amount,
-    currency: currency,
-  );
+  Money toDomain() {
+    final parsed = parseMoneyWithCurrencyCode(amount, currency);
+    if (parsed == null) {
+      throw FormatException('Invalid money dto: $currency $amount');
+    }
+    return parsed;
+  }
 }
--- a/frontend/pshared/lib/data/mapper/wallet/chain_asset.dart
+++ b/frontend/pshared/lib/data/mapper/wallet/chain_asset.dart
@@ -1,18 +0,0 @@
-import 'package:pshared/data/dto/wallet/chain_asset.dart';
-import 'package:pshared/data/mapper/payment/enums.dart';
-import 'package:pshared/models/wallet/chain_asset.dart';
-
-
-extension ChainAssetDTOMapper on ChainAssetDTO {
-  ChainAsset toDomain() => ChainAsset(
-    chain: chainNetworkFromValue(chain),
-    tokenSymbol: tokenSymbol,
-  );
-}
-
-extension ChainAssetMapper on ChainAsset {
-  ChainAssetDTO toDTO() => ChainAssetDTO(
-    chain: chainNetworkToValue(chain),
-    tokenSymbol: tokenSymbol,
-  );
-}
--- a/frontend/pshared/lib/data/mapper/wallet/ui.dart
+++ b/frontend/pshared/lib/data/mapper/wallet/ui.dart
@@ -1,16 +1,13 @@
 import 'package:pshared/models/wallet/wallet.dart' as domain;
 import 'package:pshared/models/payment/wallet.dart';
 import 'package:pshared/utils/currency.dart';
-import 'package:pshared/utils/money.dart';


 extension WalletUiMapper on domain.WalletModel {
  Wallet toUi() => Wallet(
    id: walletRef,
    walletUserID: walletRef,
-    balance: parseMoneyAmount(
-      availableMoney?.amount ?? balance?.available?.amount,
-    ),
+    balance: availableMoney?.toDouble() ?? balance?.available?.toDouble() ?? 0,
    currency: currencyStringToCode(asset.tokenSymbol),
    calculatedAt: balance?.calculatedAt ?? DateTime.now(),
    depositAddress: depositAddress,
--- a/frontend/pshared/lib/data/mapper/wallet/wallet.dart
+++ b/frontend/pshared/lib/data/mapper/wallet/wallet.dart
@@ -16,15 +16,19 @@ extension WalletDTOMapper on WalletDTO {
    depositAddress: depositAddress,
    status: status,
    metadata: metadata,
-    createdAt: (createdAt == null || createdAt!.isEmpty) ? null : DateTime.tryParse(createdAt!),
-    updatedAt: (updatedAt == null || updatedAt!.isEmpty) ? null : DateTime.tryParse(updatedAt!),
+    createdAt: (createdAt == null || createdAt!.isEmpty)
+        ? null
+        : DateTime.tryParse(createdAt!),
+    updatedAt: (updatedAt == null || updatedAt!.isEmpty)
+        ? null
+        : DateTime.tryParse(updatedAt!),
    balance: balance?.toDomain(),
    availableMoney: balance?.available?.toDomain(),
    describable: newDescribable(
      name: name.isNotEmpty ? name : (metadata?['name']?.toString() ?? ''),
      description: (description != null && description!.isNotEmpty)
-        ? description
-        : metadata?['description'],
+          ? description
+          : metadata?['description'],
    ),
  );
 }
--- a/frontend/pshared/lib/models/asset.dart
+++ b/frontend/pshared/lib/models/asset.dart
@@ -1,18 +0,0 @@
-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),
-);
--- a/frontend/pshared/lib/models/currency.dart
+++ b/frontend/pshared/lib/models/currency.dart
@@ -1 +1 @@
-enum Currency {usd, eur, rub, usdt, usdc}
+enum CurrencyCode {usd, eur, rub, usdt, usdc}
--- a/frontend/pshared/lib/models/ledger/balance.dart
+++ b/frontend/pshared/lib/models/ledger/balance.dart
@@ -1,4 +1,4 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';


 class LedgerBalance {
--- a/frontend/pshared/lib/models/money.dart
+++ b/frontend/pshared/lib/models/money.dart
@@ -1,9 +0,0 @@
-class Money {
-  final String amount;
-  final String currency;
-
-  const Money({
-    required this.amount,
-    required this.currency,
-  });
-}
--- a/frontend/pshared/lib/models/payment/execution_operation.dart
+++ b/frontend/pshared/lib/models/payment/execution_operation.dart
@@ -1,4 +1,4 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';


 class PaymentExecutionOperation {
--- a/frontend/pshared/lib/models/payment/fees/line.dart
+++ b/frontend/pshared/lib/models/payment/fees/line.dart
@@ -1,4 +1,4 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';


 class FeeLine {
--- a/frontend/pshared/lib/models/payment/fx/quote.dart
+++ b/frontend/pshared/lib/models/payment/fx/quote.dart
@@ -1,4 +1,5 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';
+

 class FxQuote {
  final String? quoteRef;
--- a/frontend/pshared/lib/models/payment/intent.dart
+++ b/frontend/pshared/lib/models/payment/intent.dart
@@ -1,11 +1,13 @@
+import 'package:money2/money2.dart';
+
 import 'package:pshared/models/payment/fees/treatment.dart';
 import 'package:pshared/models/payment/fx/intent.dart';
 import 'package:pshared/models/payment/kind.dart';
 import 'package:pshared/models/payment/customer.dart';
 import 'package:pshared/models/payment/methods/data.dart';
-import 'package:pshared/models/money.dart';
 import 'package:pshared/models/payment/settlement_mode.dart';

+
 class PaymentIntent {
  final PaymentKind kind;
  final String? sourceRef;
--- a/frontend/pshared/lib/models/payment/quote/amounts.dart
+++ b/frontend/pshared/lib/models/payment/quote/amounts.dart
@@ -1,4 +1,5 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';
+

 class QuoteAmounts {
  final Money? sourcePrincipal;
--- a/frontend/pshared/lib/models/payment/wallet.dart
+++ b/frontend/pshared/lib/models/payment/wallet.dart
@@ -7,7 +7,7 @@ class Wallet implements Describable {
  final String id;
  final String walletUserID; // ID or number that we show the user
  final double balance;
-  final Currency currency;
+  final CurrencyCode currency;
  final DateTime calculatedAt;
  final String? depositAddress;
  final ChainNetwork? network;
--- a/frontend/pshared/lib/models/wallet/asset.dart
+++ b/frontend/pshared/lib/models/wallet/asset.dart
@@ -1,12 +1,14 @@
-import 'package:pshared/models/wallet/chain_asset.dart';
+import 'package:pshared/models/payment/chain_network.dart';


-class WalletAsset extends ChainAsset {
+class WalletAsset {
+  final ChainNetwork chain;
+  final String tokenSymbol;
  final String contractAddress;

  const WalletAsset({
-    required super.chain,
-    required super.tokenSymbol,
+    required this.chain,
+    required this.tokenSymbol,
    required this.contractAddress,
  });
 }
--- a/frontend/pshared/lib/models/wallet/balance.dart
+++ b/frontend/pshared/lib/models/wallet/balance.dart
@@ -1,4 +1,4 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';


 class WalletBalance {
--- a/frontend/pshared/lib/models/wallet/chain_asset.dart
+++ b/frontend/pshared/lib/models/wallet/chain_asset.dart
@@ -1,12 +0,0 @@
-import 'package:pshared/models/payment/chain_network.dart';
-
-
-class ChainAsset {
-  final ChainNetwork chain;
-  final String tokenSymbol;
-
-  const ChainAsset({
-    required this.chain,
-    required this.tokenSymbol,
-  });
-}
--- a/frontend/pshared/lib/models/wallet/wallet.dart
+++ b/frontend/pshared/lib/models/wallet/wallet.dart
@@ -1,5 +1,5 @@
 import 'package:pshared/models/describable.dart';
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';
 import 'package:pshared/models/wallet/asset.dart';
 import 'package:pshared/models/wallet/balance.dart';

@@ -39,9 +39,7 @@ class WalletModel implements Describable {
    required this.describable,
  });

-  WalletModel copyWith({
-    Describable? describable,
-  }) => WalletModel(
+  WalletModel copyWith({Describable? describable}) => WalletModel(
    walletRef: walletRef,
    organizationRef: organizationRef,
    ownerRef: ownerRef,
--- a/frontend/pshared/lib/provider/ledger.dart
+++ b/frontend/pshared/lib/provider/ledger.dart
@@ -15,6 +15,7 @@ import 'package:pshared/provider/resource.dart';
 import 'package:pshared/service/ledger.dart';
 import 'package:pshared/utils/exception.dart';

+
 class LedgerAccountsProvider with ChangeNotifier {
  final LedgerService _service;
  OrganizationsProvider? _organizations;
@@ -179,7 +180,7 @@ class LedgerAccountsProvider with ChangeNotifier {

  Future<void> create({
    required Describable describable,
-    required Currency currency,
+    required CurrencyCode currency,
    String? ownerRef,
  }) async {
    final org = _organizations;
--- a/frontend/pshared/lib/provider/payment/quotation/intent_builder.dart
+++ b/frontend/pshared/lib/provider/payment/quotation/intent_builder.dart
@@ -1,3 +1,5 @@
+import 'package:money2/money2.dart';
+
 import 'package:pshared/controllers/payment/source.dart';
 import 'package:pshared/models/payment/asset.dart';
 import 'package:pshared/models/payment/chain_network.dart';
@@ -13,19 +15,18 @@ import 'package:pshared/models/payment/methods/data.dart';
 import 'package:pshared/models/payment/methods/ledger.dart';
 import 'package:pshared/models/payment/methods/managed_wallet.dart';
 import 'package:pshared/models/payment/methods/type.dart';
-import 'package:pshared/models/money.dart';
 import 'package:pshared/models/payment/settlement_mode.dart';
 import 'package:pshared/models/payment/intent.dart';
 import 'package:pshared/models/recipient/recipient.dart';
 import 'package:pshared/provider/payment/amount.dart';
 import 'package:pshared/provider/payment/flow.dart';
 import 'package:pshared/provider/recipient/provider.dart';
+import 'package:pshared/utils/currency.dart';
 import 'package:pshared/utils/payment/fx_helpers.dart';


 class QuotationIntentBuilder {
  static const String _settlementCurrency = 'RUB';
-  static const String _addressBookCustomerFallbackId = 'address_book_customer';

  PaymentIntent? build({
    required PaymentAmountProvider payment,
@@ -38,10 +39,9 @@ class QuotationIntentBuilder {
    final paymentData = flow.selectedPaymentData;
    final selectedMethod = flow.selectedMethod;
    final amountValue = payment.amount;
-    if (sourceMethod == null || sourceCurrency == null || paymentData == null) {
+    if (sourceCurrency == null) {
      return null;
    }
-    if (amountValue == null) return null;

    final customer = _buildCustomer(
      recipient: recipients.currentObject,
@@ -51,22 +51,22 @@ class QuotationIntentBuilder {
    final amountCurrency = payment.settlementMode == SettlementMode.fixReceived
        ? _settlementCurrency
        : sourceCurrency;
-    final amount = Money(
-      amount: amountValue.toString(),
-      currency: amountCurrency,
-    );
+    final currency = money2CurrencyFromCode(amountCurrency);
+    if (currency == null) return null;
+    final amount = amountValue == null
+        ? null
+        : Money.fromNumWithCurrency(amountValue, currency);
    final isLedgerSource = source.selectedLedgerAccount != null;
    final isCryptoToCrypto =
        paymentData is CryptoAddressPaymentMethod &&
        (paymentData.asset?.tokenSymbol ?? '').trim().toUpperCase() ==
-            amount.currency;
+            sourceCurrency.trim().toUpperCase();
    final fxIntent = _buildFxIntent(
      sourceCurrency: sourceCurrency,
      settlementMode: payment.settlementMode,
      isLedgerSource: isLedgerSource,
      enabled: !isCryptoToCrypto,
    );
-    final comment = _resolveComment(payment.comment);
    return PaymentIntent(
      kind: PaymentKind.payout,
      amount: amount,
@@ -77,7 +77,7 @@ class QuotationIntentBuilder {
          ? FeeTreatment.addToSource
          : FeeTreatment.deductFromDestination,
      settlementMode: payment.settlementMode,
-      comment: comment,
+      comment: payment.comment,
      customer: customer,
    );
  }
@@ -94,14 +94,9 @@ class QuotationIntentBuilder {
    // BFF maps only settlement currency + fx side, then quotation derives pair.
    // For ledger this preserves source debit in ledger currency (e.g. USDT).
    if (isLedgerSource && settlementMode == SettlementMode.fixReceived) {
-      final base = sourceCurrency.trim();
-      final quote = _settlementCurrency;
-      if (base.isEmpty || base.toUpperCase() == quote.toUpperCase()) {
-        return null;
-      }
      return FxIntent(
-        pair: CurrencyPair(base: base, quote: quote),
-        side: FxSide.sellBaseBuyQuote,
+        pair: CurrencyPair(base: sourceCurrency, quote: _settlementCurrency),
+        side: FxSide.buyBaseSellQuote,
      );
    }

@@ -137,39 +132,59 @@ class QuotationIntentBuilder {
    required PaymentMethod? method,
    required PaymentMethodData? data,
  }) {
-    final name = recipient?.name.trim();
-    if (name == null || name.isEmpty) return null;
-    final id = recipient?.id.trim();
-    final customerId = id == null || id.isEmpty
-        ? _addressBookCustomerFallbackId
-        : id;
+    final customerId = recipient?.id.trim() ?? '';
+    final card = _resolveCard(method: method, data: data);
+    final fromRecipient = _buildCustomerFromName(
+      customerId: customerId,
+      fullName: recipient?.name,
+      country: card?.country,
+    );
+    if (fromRecipient != null) return fromRecipient;

-    final parts = name.split(RegExp(r'\s+'));
+    if (card != null) {
+      final firstName = _normalizedOrNull(card.firstName);
+      final lastName = _normalizedOrNull(card.lastName);
+      if (firstName == null && lastName == null) return null;
+      return Customer(
+        id: customerId,
+        firstName: firstName,
+        lastName: lastName,
+        country: card.country,
+      );
+    }
+    return null;
+  }
+
+  CardPaymentMethod? _resolveCard({
+    required PaymentMethod? method,
+    required PaymentMethodData? data,
+  }) => method?.cardData ?? (data is CardPaymentMethod ? data : null);
+
+  Customer? _buildCustomerFromName({
+    required String customerId,
+    required String? fullName,
+    String? country,
+  }) {
+    final normalizedName = _normalizedOrNull(fullName);
+    if (normalizedName == null) return null;
+    final parts = normalizedName.split(RegExp(r'\s+'));
    final firstName = parts.isNotEmpty ? parts.first : null;
    final lastName = parts.length >= 2 ? parts.last : null;
    final middleName = parts.length > 2
        ? parts.sublist(1, parts.length - 1).join(' ')
        : null;
-
    return Customer(
      id: customerId,
      firstName: firstName,
      middleName: middleName,
      lastName: lastName,
-      country: _resolveCustomerCountry(method: method, data: data),
+      country: country,
    );
  }

-  String? _resolveCustomerCountry({
-    required PaymentMethod? method,
-    required PaymentMethodData? data,
-  }) {
-    final card = method?.cardData ?? (data is CardPaymentMethod ? data : null);
-    return card?.country;
-  }
-
-  String? _resolveComment(String comment) {
-    final normalized = comment.trim();
+  String? _normalizedOrNull(String? value) {
+    if (value == null) return null;
+    final normalized = value.trim();
    return normalized.isEmpty ? null : normalized;
  }
 }
--- a/frontend/pshared/lib/provider/payment/quotation/quotation.dart
+++ b/frontend/pshared/lib/provider/payment/quotation/quotation.dart
@@ -6,13 +6,13 @@ import 'package:logging/logging.dart';

 import 'package:uuid/uuid.dart';

+import 'package:money2/money2.dart';
+
 import 'package:pshared/api/requests/payment/quote.dart';
 import 'package:pshared/controllers/payment/source.dart';
 import 'package:pshared/data/mapper/payment/intent/payment.dart';
-import 'package:pshared/models/asset.dart';
 import 'package:pshared/models/payment/intent.dart';
 import 'package:pshared/models/payment/quote/quote.dart';
-import 'package:pshared/models/money.dart';
 import 'package:pshared/models/auto_refresh_mode.dart';
 import 'package:pshared/provider/organizations.dart';
 import 'package:pshared/provider/payment/amount.dart';
@@ -79,20 +79,12 @@ class QuotationProvider extends ChangeNotifier {
    return DateTime.fromMillisecondsSinceEpoch(expiresAtUnixMs, isUtc: true);
  }

-  Asset? get fee => _assetFromMoney(quoteFeeTotal(quotation));
-  Asset? get total => _assetFromMoney(
-    quoteSourceDebitTotal(
-      quotation,
-      preferredSourceCurrency: _sourceCurrencyCode,
-    ),
+  Money? get fee => quoteFeeTotal(quotation);
+  Money? get total => quoteSourceDebitTotal(
+    quotation,
+    preferredSourceCurrency: _sourceCurrencyCode,
  );
-  Asset? get recipientGets =>
-      _assetFromMoney(quotation?.amounts?.destinationSettlement);
-
-  Asset? _assetFromMoney(Money? money) {
-    if (money == null) return null;
-    return createAsset(money.currency, money.amount);
-  }
+  Money? get recipientGets => quotation?.amounts?.destinationSettlement;

  void _setResource(Resource<PaymentQuote> quotation) {
    _quotation = quotation;
--- a/frontend/pshared/lib/provider/payment/wallets.dart
+++ b/frontend/pshared/lib/provider/payment/wallets.dart
@@ -5,14 +5,16 @@ import 'package:flutter/foundation.dart';

 import 'package:collection/collection.dart';

+import 'package:pshared/models/currency.dart';
 import 'package:pshared/models/describable.dart';
+import 'package:pshared/models/payment/chain_network.dart';
 import 'package:pshared/models/payment/wallet.dart';
-import 'package:pshared/models/wallet/chain_asset.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;
  OrganizationsProvider? _organizations;
@@ -180,7 +182,8 @@ class WalletsProvider with ChangeNotifier {

  Future<void> create({
    required Describable describable,
-    required ChainAsset asset,
+    required ChainNetwork chain,
+    required CurrencyCode currency,
    required String? ownerRef,
  }) async {
    final org = _organizations;
@@ -195,7 +198,8 @@ class WalletsProvider with ChangeNotifier {
      await _service.create(
        organizationRef: org.current.id,
        describable: describable,
-        asset: asset,
+        chain: chain,
+        currency: currency,
        ownerRef: ownerRef,
      );
      await loadWalletsWithBalances();
--- a/frontend/pshared/lib/service/ledger.dart
+++ b/frontend/pshared/lib/service/ledger.dart
@@ -43,7 +43,7 @@ class LedgerService {
    required String organizationRef,
    required Describable describable,
    required String? ownerRef,
-    required Currency currency,
+    required CurrencyCode currency,
  }) async => AuthorizationService.getPOSTResponse(
    _objectType,
    '/$organizationRef',
--- a/frontend/pshared/lib/service/payment/wallets.dart
+++ b/frontend/pshared/lib/service/payment/wallets.dart
@@ -1,9 +1,9 @@
 import 'package:pshared/data/mapper/wallet/ui.dart';
+import 'package:pshared/models/currency.dart';
 import 'package:pshared/models/describable.dart';
+import 'package:pshared/models/payment/chain_network.dart';
 import 'package:pshared/models/payment/wallet.dart';
-import 'package:pshared/models/wallet/chain_asset.dart';
 import 'package:pshared/service/wallet.dart' as shared_wallet_service;
-import 'package:pshared/utils/money.dart';


 abstract class WalletsService {
@@ -12,7 +12,8 @@ abstract class WalletsService {
  Future<void> create({
    required String organizationRef,
    required Describable describable,
-    required ChainAsset asset,
+    required ChainNetwork chain,
+    required CurrencyCode currency,
    required String? ownerRef,
  });
 }
@@ -30,19 +31,21 @@ class ApiWalletsService implements WalletsService {
      organizationRef: organizationRef,
      walletRef: walletRef,
    );
-    return parseMoneyAmount(balance.available?.amount);
+    return balance.available?.toDouble() ?? 0;
  }

  @override
  Future<void> create({
    required String organizationRef,
    required Describable describable,
-    required ChainAsset asset,
+    required ChainNetwork chain,
+    required CurrencyCode currency,
    required String? ownerRef,
  }) => shared_wallet_service.WalletService.create(
    organizationRef: organizationRef,
    describable: describable,
-    asset: asset,
+    chain: chain,
+    currency: currency,
    ownerRef: ownerRef,
  );
 }
--- a/frontend/pshared/lib/service/wallet.dart
+++ b/frontend/pshared/lib/service/wallet.dart
@@ -1,15 +1,18 @@
 import 'package:pshared/api/requests/wallet/create.dart';
 import 'package:pshared/api/responses/wallet_balance.dart';
 import 'package:pshared/api/responses/wallets.dart';
+import 'package:pshared/data/dto/wallet/chain_asset.dart';
 import 'package:pshared/data/mapper/describable.dart';
-import 'package:pshared/data/mapper/wallet/chain_asset.dart';
+import 'package:pshared/data/mapper/payment/enums.dart';
 import 'package:pshared/data/mapper/wallet/response.dart';
+import 'package:pshared/models/currency.dart';
 import 'package:pshared/models/describable.dart';
+import 'package:pshared/models/payment/chain_network.dart';
 import 'package:pshared/models/wallet/balance.dart';
-import 'package:pshared/models/wallet/chain_asset.dart';
 import 'package:pshared/models/wallet/wallet.dart';
 import 'package:pshared/service/authorization/service.dart';
 import 'package:pshared/service/services.dart';
+import 'package:pshared/utils/currency.dart';


 class WalletService {
@@ -37,13 +40,19 @@ class WalletService {
  static Future<void> create({
    required String organizationRef,
    required Describable describable,
-    required ChainAsset asset,
+    required ChainNetwork chain,
+    required CurrencyCode currency,
    required String? ownerRef,
  }) async => AuthorizationService.getPOSTResponse(
    _objectType,
    '/$organizationRef',
    CreateWalletRequest(
-      asset: asset.toDTO(), 
+      asset: ChainAssetDTO(
+        chain: chainNetworkToValue(chain),
+        tokenSymbol:
+            money2CurrencyFromCode(currencyCodeToString(currency))?.isoCode ??
+            currencyCodeToString(currency),
+      ),
      describable: describable.toDTO(),
      ownerRef: ownerRef,
    ).toJson(),
--- a/frontend/pshared/lib/utils/currency.dart
+++ b/frontend/pshared/lib/utils/currency.dart
@@ -1,102 +1,78 @@
-import 'package:flutter/material.dart';
+import 'package:money2/money2.dart';

-import 'package:pshared/models/asset.dart';
 import 'package:pshared/models/currency.dart';


-const nonBreakingSpace = '\u00A0';
+final Currency _usdtCurrency = Currency.create(
+  'USDT',
+  6,
+  symbol: '₮',
+  isIso: false,
+  country: 'Digital',
+  unit: 'Tether',
+  name: 'Tether',
+);

-String withTrailingNonBreakingSpace(String value) {
-  return '$value$nonBreakingSpace';
-}
+final Currency _usdcCurrency = Currency.create(
+  'USDC',
+  6,
+  symbol: r'($)',
+  isIso: false,
+  country: 'Digital',
+  unit: 'USD Coin',
+  name: 'USD Coin',
+);

-String joinWithNonBreakingSpace(String left, String right) {
-  return '$left$nonBreakingSpace$right';
-}
+final Map<String, Currency> _commonCurrenciesByCode =
+    <String, Currency>{
+      for (final currency in CommonCurrencies().asList())
+        currency.isoCode: currency,
+      _usdtCurrency.isoCode: _usdtCurrency,
+      _usdcCurrency.isoCode: _usdcCurrency,
+    };

-String currencyCodeToSymbol(Currency currencyCode) {
-  switch (currencyCode) {
-    case Currency.usd:
-      return '\$';
-    case Currency.usdt:
-      return '₮';
-    case Currency.usdc:
-      return '\$';
-    case Currency.rub:
-      return '₽';
-    case Currency.eur:
-      return '€';
+String currencyCodeToSymbol(CurrencyCode currencyCode) {
+  final symbol = currencySymbolFromCode(currencyCodeToString(currencyCode));
+  if (symbol == null || symbol.trim().isEmpty) {
+    return currencyCodeToString(currencyCode);
  }
+  return symbol;
 }

-String amountToString(double amount) {
-  return amount.toStringAsFixed(2);
-}
-
-String currencyToString(Currency currencyCode, double amount) {
-  return joinWithNonBreakingSpace(
-    currencyCodeToSymbol(currencyCode),
-    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: $currencyCode');
+String currencyToString(CurrencyCode currencyCode, double amount) {
+  final code = currencyCodeToString(currencyCode);
+  final currency = money2CurrencyFromCode(code);
+  if (currency == null) {
+    return '$amount $code';
  }
+  final money = Money.fromNumWithCurrency(amount, currency);
+  return money.toString();
 }

-String currencyCodeToString(Currency currencyCode) {
-  switch (currencyCode) {
-    case Currency.usd:
-      return 'USD';
-    case Currency.usdt:
-      return 'USDT';
-    case Currency.usdc:
-      return 'USDC';
-    case Currency.rub:
-      return 'RUB';
-    case Currency.eur:
-      return 'EUR';
+CurrencyCode currencyStringToCode(String currencyCode) {
+  final normalized = currencyCode.trim().toUpperCase();
+  for (final value in CurrencyCode.values) {
+    if (currencyCodeToString(value) == normalized) {
+      return value;
+    }
  }
+
+  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;
-  }
+String currencyCodeToString(CurrencyCode currencyCode) {
+  return currencyCode.name.toUpperCase();
 }

 String? currencySymbolFromCode(String? code) {
-  final normalized = code?.trim();
-  if (normalized == null || normalized.isEmpty) return null;
-  try {
-    return currencyCodeToSymbol(currencyStringToCode(normalized.toUpperCase()));
-  } catch (_) {
-    return null;
-  }
+  final currency = money2CurrencyFromCode(code);
+  if (currency == null) return null;
+  final symbol = currency.symbol.trim();
+  return symbol.isEmpty ? null : symbol;
+}
+
+Currency? money2CurrencyFromCode(String? code) {
+  final normalized = code?.trim().toUpperCase();
+  if (normalized == null || normalized.isEmpty) return null;
+  return _commonCurrenciesByCode[normalized] ?? Currencies().find(normalized);
 }
--- a/frontend/pshared/lib/utils/money.dart
+++ b/frontend/pshared/lib/utils/money.dart
@@ -1,41 +1,35 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';
 import 'package:pshared/utils/currency.dart';

+const String _decimalMoneyPattern = '0.##################';

-double parseMoneyAmount(String? raw, {double fallback = 0}) {
-  final trimmed = raw?.trim();
-  if (trimmed == null || trimmed.isEmpty) return fallback;
-  return double.tryParse(trimmed) ?? fallback;
+Money? parseMoneyWithCurrency(String? amount, Currency? currency) {
+  if (currency == null) return null;
+  final value = _normalizeMoneyAmount(amount);
+  if (value == null || value.isEmpty) return null;
+
+  try {
+    return Money.parseWithCurrency(
+      value,
+      currency,
+      pattern: _decimalMoneyPattern,
+    );
+  } catch (_) {
+    return null;
+  }
 }

-String formatMoneyDisplay(
-  Money? money, {
-  String fallback = '--',
-  String separator = ' ',
-  String invalidAmountFallback = '',
-}) {
-  if (money == null) return fallback;
-
-  final rawAmount = money.amount.trim();
-  final rawCurrency = money.currency.trim();
-  final parsedAmount = parseMoneyAmount(rawAmount, fallback: double.nan);
-  final amountToken = parsedAmount.isNaN
-      ? (rawAmount.isEmpty ? invalidAmountFallback : rawAmount)
-      : amountToString(parsedAmount);
-
-  final symbol = currencySymbolFromCode(rawCurrency);
-  final normalizedSymbol = symbol?.trim() ?? '';
-  final hasSymbol = normalizedSymbol.isNotEmpty;
-  final currencyToken = hasSymbol ? normalizedSymbol : rawCurrency;
-  final first = amountToken;
-  final second = currencyToken;
-
-  if (first.isEmpty && second.isEmpty) return fallback;
-  if (first.isEmpty) return second;
-  if (second.isEmpty) return first;
-  return '$first$separator$second';
+Money? parseMoneyWithCurrencyCode(String? amount, String? currencyCode) {
+  return parseMoneyWithCurrency(amount, money2CurrencyFromCode(currencyCode));
 }

-extension MoneyAmountX on Money {
-  double get amountValue => parseMoneyAmount(amount);
+String? _normalizeMoneyAmount(String? value) {
+  final normalized = value?.trim();
+  if (normalized == null || normalized.isEmpty) return null;
+
+  if (normalized.contains(',') && !normalized.contains('.')) {
+    return normalized.replaceAll(',', '.');
+  }
+
+  return normalized;
 }
--- a/frontend/pshared/lib/utils/payment/fx_helpers.dart
+++ b/frontend/pshared/lib/utils/payment/fx_helpers.dart
@@ -1,7 +1,8 @@
+import 'package:money2/money2.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/money.dart';


 class FxIntentHelper {
@@ -37,11 +38,15 @@ class FxIntentHelper {
        case FxSide.unspecified:
          break;
      }
-      if (amount.currency == pair.base && pair.quote.isNotEmpty) return pair.quote;
-      if (amount.currency == pair.quote && pair.base.isNotEmpty) return pair.base;
+      if (amount.currency.isoCode == pair.base && pair.quote.isNotEmpty) {
+        return pair.quote;
+      }
+      if (amount.currency.isoCode == pair.quote && pair.base.isNotEmpty) {
+        return pair.base;
+      }
      if (pair.quote.isNotEmpty) return pair.quote;
      if (pair.base.isNotEmpty) return pair.base;
    }
-    return amount.currency;
+    return amount.currency.isoCode;
  }
 }
--- a/frontend/pshared/lib/utils/payment/quotation_currency_resolver.dart
+++ b/frontend/pshared/lib/utils/payment/quotation_currency_resolver.dart
@@ -12,7 +12,7 @@ class PaymentQuotationCurrencyResolver {
    PaymentMethodData? paymentData,
  }) {
    final quoteCurrency = _normalizeCurrency(
-      quote?.amounts?.destinationSettlement?.currency,
+      quote?.amounts?.destinationSettlement?.currency.isoCode,
    );
    if (quoteCurrency != null) return quoteCurrency;

--- a/frontend/pshared/lib/utils/payment/quote_helpers.dart
+++ b/frontend/pshared/lib/utils/payment/quote_helpers.dart
@@ -1,17 +1,16 @@
-import 'package:pshared/models/money.dart';
+import 'package:money2/money2.dart';
+
 import 'package:pshared/models/payment/fees/line.dart';
 import 'package:pshared/models/payment/quote/quote.dart';
 import 'package:pshared/utils/currency.dart';
-import 'package:pshared/utils/money.dart';


 Money? quoteFeeTotal(PaymentQuote? quote) {
-  final preferredCurrency =
-      quote?.amounts?.sourcePrincipal?.currency ??
-      quote?.amounts?.sourceDebitTotal?.currency;
  return quoteFeeTotalFromLines(
    quote?.fees?.lines,
-    preferredCurrency: preferredCurrency,
+    preferredCurrency:
+        quote?.amounts?.sourcePrincipal?.currency.isoCode ??
+        quote?.amounts?.sourceDebitTotal?.currency.isoCode,
  );
 }

@@ -21,7 +20,8 @@ Money? quoteSourceDebitTotal(
 }) {
  final sourceDebitTotal = quote?.amounts?.sourceDebitTotal;
  final preferredCurrency = _normalizeCurrency(
-    preferredSourceCurrency ?? quote?.amounts?.sourcePrincipal?.currency,
+    preferredSourceCurrency ??
+        quote?.amounts?.sourcePrincipal?.currency.isoCode,
  );

  if (sourceDebitTotal == null) {
@@ -31,10 +31,9 @@ Money? quoteSourceDebitTotal(
    );
  }

-  final debitCurrency = _normalizeCurrency(sourceDebitTotal.currency);
  if (preferredCurrency == null ||
-      debitCurrency == null ||
-      debitCurrency == preferredCurrency) {
+      _normalizeCurrency(sourceDebitTotal.currency.isoCode) ==
+          preferredCurrency) {
    return sourceDebitTotal;
  }

@@ -52,22 +51,18 @@ Money? quoteFeeTotalFromLines(
  if (lines == null || lines.isEmpty) return null;

  final normalizedPreferred = _normalizeCurrency(preferredCurrency);
-  final totalsByCurrency = <String, double>{};
+  final totalsByCurrency = <String, Money>{};

  for (final line in lines) {
-    final money = line.amount;
-    if (money == null) continue;
+    final parsedAmount = line.amount;
+    if (parsedAmount == null) continue;

-    final currency = _normalizeCurrency(money.currency);
-    if (currency == null) continue;
-
-    final amount = parseMoneyAmount(money.amount, fallback: double.nan);
-    if (amount.isNaN) continue;
-
-    final sign = _lineSign(line.side);
-    final signedAmount = sign * amount.abs();
-    totalsByCurrency[currency] =
-        (totalsByCurrency[currency] ?? 0) + signedAmount;
+    final currencyCode = parsedAmount.currency.isoCode;
+    final signedAmount = _isCreditLine(line.side) ? -parsedAmount : parsedAmount;
+    final current = totalsByCurrency[currencyCode];
+    totalsByCurrency[currencyCode] = current == null
+        ? signedAmount
+        : current + signedAmount;
  }

  if (totalsByCurrency.isEmpty) return null;
@@ -77,85 +72,59 @@ Money? quoteFeeTotalFromLines(
          totalsByCurrency.containsKey(normalizedPreferred)
      ? normalizedPreferred
      : totalsByCurrency.keys.first;
-  final total = totalsByCurrency[selectedCurrency];
-  if (total == null) return null;
-
-  return Money(amount: amountToString(total), currency: selectedCurrency);
+  return totalsByCurrency[selectedCurrency];
 }

 List<Money> aggregateMoneyByCurrency(Iterable<Money?> values) {
-  final totals = <String, double>{};
+  final totals = <String, Money>{};
  for (final value in values) {
    if (value == null) continue;
-
-    final currency = _normalizeCurrency(value.currency);
-    if (currency == null) continue;
-
-    final amount = parseMoneyAmount(value.amount, fallback: double.nan);
-    if (amount.isNaN) continue;
-
-    totals[currency] = (totals[currency] ?? 0) + amount;
+    final currency = value.currency.isoCode;
+    final current = totals[currency];
+    totals[currency] = current == null ? value : current + value;
  }

-  return totals.entries
-      .map(
-        (entry) =>
-            Money(amount: amountToString(entry.value), currency: entry.key),
-      )
-      .toList();
+  return totals.values.toList();
 }

 Money? _rebuildSourceDebitTotal(
  PaymentQuote? quote, {
  String? preferredSourceCurrency,
 }) {
-  final sourcePrincipal = quote?.amounts?.sourcePrincipal;
-  if (sourcePrincipal == null) return null;
+  final principal = quote?.amounts?.sourcePrincipal;
+  if (principal == null) return null;

-  final principalCurrency = _normalizeCurrency(sourcePrincipal.currency);
-  if (principalCurrency == null) return null;
+  final principalCurrency = principal.currency.isoCode;
  if (preferredSourceCurrency != null &&
      principalCurrency != preferredSourceCurrency) {
    return null;
  }

-  final principalAmount = parseMoneyAmount(
-    sourcePrincipal.amount,
-    fallback: double.nan,
-  );
-  if (principalAmount.isNaN) return null;
-
-  double totalAmount = principalAmount;
+  var totalAmount = principal;
  final fee = quoteFeeTotalFromLines(
    quote?.fees?.lines,
    preferredCurrency: principalCurrency,
  );
-  if (fee != null && _normalizeCurrency(fee.currency) == principalCurrency) {
-    final feeAmount = parseMoneyAmount(fee.amount, fallback: double.nan);
-    if (!feeAmount.isNaN) {
-      totalAmount += feeAmount;
-    }
+  if (fee != null && fee.currency.isoCode == principalCurrency) {
+    totalAmount += fee;
  }

-  return Money(
-    amount: amountToString(totalAmount),
-    currency: principalCurrency,
-  );
+  return totalAmount;
 }

-double _lineSign(String? side) {
+bool _isCreditLine(String? side) {
  final normalized = side?.trim().toLowerCase() ?? '';
  switch (normalized) {
    case 'entry_side_credit':
    case 'credit':
-      return -1;
+      return true;
    default:
-      return 1;
+      return false;
  }
 }

 String? _normalizeCurrency(String? currency) {
-  final normalized = currency?.trim().toUpperCase();
+  final normalized = currency?.trim();
  if (normalized == null || normalized.isEmpty) return null;
-  return normalized;
+  return money2CurrencyFromCode(normalized)?.isoCode ?? normalized.toUpperCase();
 }
--- a/frontend/pshared/pubspec.yaml
+++ b/frontend/pshared/pubspec.yaml
@@ -28,6 +28,7 @@ dependencies:
  uuid: ^4.5.1
  image: ^4.5.4
  shared_preferences: ^2.5.3
+  money2: ^6.3.0
  
 dev_dependencies:
  flutter_lints: ^6.0.0