+ quotation provider

frontend/pshared/lib/models/payment/asset.dart

@@ -0,0 +1,14 @@
+import 'package:pshared/models/payment/chain_network.dart';
+
+
+class PaymentAsset {
+  final ChainNetwork chain;
+  final String tokenSymbol;
+  final String? contractAddress;
+
+  const PaymentAsset({
+    this.chain = ChainNetwork.unspecified,
+    required this.tokenSymbol,
+    this.contractAddress,
+  });
+}

frontend/pshared/lib/models/payment/chain_network.dart

@@ -0,0 +1 @@
+enum ChainNetwork { unspecified, ethereumMainnet, arbitrumOne, otherEvm }

frontend/pshared/lib/models/payment/currency_pair.dart

@@ -0,0 +1,9 @@
+class CurrencyPair {
+  final String base;
+  final String quote;
+
+  const CurrencyPair({
+    required this.base,
+    required this.quote,
+  });
+}

frontend/pshared/lib/models/payment/fees/line.dart

@@ -0,0 +1,18 @@
+import 'package:pshared/models/payment/money.dart';
+
+
+class FeeLine {
+  final String? ledgerAccountRef;
+  final Money? amount;
+  final String? lineType;
+  final String? side;
+  final Map<String, String>? meta;
+
+  const FeeLine({
+    required this.ledgerAccountRef,
+    required this.amount,
+    required this.lineType,
+    required this.side,
+    required this.meta,
+  });
+}

frontend/pshared/lib/models/payment/fees/network.dart

@@ -0,0 +1,12 @@
+import 'package:pshared/models/payment/money.dart';
+
+
+class NetworkFee {
+  final Money? networkFee;
+  final String? estimationContext;
+
+  const NetworkFee({
+    required this.networkFee,
+    required this.estimationContext,
+  });
+}

frontend/pshared/lib/models/payment/fx/intent.dart

@@ -0,0 +1,21 @@
+import 'package:pshared/models/payment/currency_pair.dart';
+import 'package:pshared/models/payment/fx/side.dart';
+
+
+class FxIntent {
+  final CurrencyPair? pair;
+  final FxSide side;
+  final bool firm;
+  final int? ttlMs;
+  final String? preferredProvider;
+  final int? maxAgeMs;
+
+  const FxIntent({
+    this.pair,
+    this.side = FxSide.unspecified,
+    this.firm = false,
+    this.ttlMs,
+    this.preferredProvider,
+    this.maxAgeMs,
+  });
+}

frontend/pshared/lib/models/payment/fx/quote.dart

@@ -0,0 +1,30 @@
+import 'package:pshared/models/payment/money.dart';
+
+
+class FxQuote {
+  final String? quoteRef;
+  final String? baseCurrency;
+  final String? quoteCurrency;
+  final String? side;
+  final String? price;
+  final Money? baseAmount;
+  final Money? quoteAmount;
+  final int? expiresAtUnixMs;
+  final String? provider;
+  final String? rateRef;
+  final bool firm;
+
+  const FxQuote({
+    required this.quoteRef,
+    required this.baseCurrency,
+    required this.quoteCurrency,
+    required this.side,
+    required this.price,
+    required this.baseAmount,
+    required this.quoteAmount,
+    required this.expiresAtUnixMs,
+    required this.provider,
+    required this.rateRef,
+    this.firm = false,
+  });
+}

frontend/pshared/lib/models/payment/fx/side.dart

@@ -0,0 +1 @@
+enum FxSide { unspecified, buyBaseSellQuote, sellBaseBuyQuote }

frontend/pshared/lib/models/payment/insufficient_net_policy.dart

@@ -0,0 +1,6 @@
+enum InsufficientNetPolicy {
+  unspecified,
+  blockPosting,
+  sweepOrgCash,
+  invoiceLater
+}

frontend/pshared/lib/models/payment/intent.dart

@@ -0,0 +1,26 @@
+import 'package:pshared/models/payment/fx/intent.dart';
+import 'package:pshared/models/payment/kind.dart';
+import 'package:pshared/models/payment/methods/data.dart';
+import 'package:pshared/models/payment/money.dart';
+import 'package:pshared/models/payment/settlement_mode.dart';
+
+
+class PaymentIntent {
+  final PaymentKind kind;
+  final PaymentMethodData? source;
+  final PaymentMethodData? destination;
+  final Money? amount;
+  final FxIntent? fx;
+  final SettlementMode settlementMode;
+  final Map<String, String>? attributes;
+
+  const PaymentIntent({
+    this.kind = PaymentKind.unspecified,
+    this.source,
+    this.destination,
+    this.amount,
+    this.fx,
+    this.settlementMode = SettlementMode.unspecified,
+    this.attributes,
+  });
+}

frontend/pshared/lib/models/payment/kind.dart

@@ -0,0 +1 @@
+enum PaymentKind { unspecified, payout, internalTransfer, fxConversion }

frontend/pshared/lib/models/payment/methods/card.dart

@@ -2,17 +2,25 @@ import 'package:pshared/models/payment/methods/data.dart';
 import 'package:pshared/models/payment/type.dart';
 
 
-class CardPaymentMethod extends PaymentMethodData {
+class CardPaymentMethod implements PaymentMethodData {
   @override
   final PaymentType type = PaymentType.card;
-
   final String pan;
   final String firstName;
   final String lastName;
+  final int? expMonth;
+  final int? expYear;
+  final String? country;
+  @override
+  final Map<String, String>? metadata;
 
-  CardPaymentMethod({
+  const CardPaymentMethod({
     required this.pan,
+    this.expMonth,
+    this.expYear,
     required this.firstName,
     required this.lastName,
+    this.country,
+    this.metadata,
   });
-}
+}

frontend/pshared/lib/models/payment/methods/card_token.dart

@@ -0,0 +1,18 @@
+import 'package:pshared/models/payment/methods/data.dart';
+import 'package:pshared/models/payment/type.dart';
+
+
+class CardTokenPaymentMethod implements PaymentMethodData {
+  @override
+  final PaymentType type = PaymentType.cardToken;
+  final String token;
+  final String maskedPan;
+  @override
+  final Map<String, String>? metadata;
+
+  const CardTokenPaymentMethod({
+    required this.token,
+    required this.maskedPan,
+    this.metadata,
+  });
+}

frontend/pshared/lib/models/payment/methods/crypto_address.dart

@@ -1,18 +1,21 @@
 import 'package:pshared/models/payment/methods/data.dart';
+import 'package:pshared/models/payment/asset.dart';
 import 'package:pshared/models/payment/type.dart';
 
 
-class CryptoAddressPaymentMethod extends PaymentMethodData {
+class CryptoAddressPaymentMethod implements PaymentMethodData {
   @override
-  final PaymentType type = PaymentType.cryptoAddress;
-
+  final PaymentType type = PaymentType.externalChain;
+  final PaymentAsset? asset;
   final String address;
-  final String network;
-  final String? destinationTag;
+  final String? memo;
+  @override
+  final Map<String, String>? metadata;
 
-  CryptoAddressPaymentMethod({
+  const CryptoAddressPaymentMethod({
+    this.asset,
     required this.address,
-    required this.network,
-    this.destinationTag,
+    this.memo,
+    this.metadata,
   });
 }

frontend/pshared/lib/models/payment/methods/data.dart

@@ -3,6 +3,7 @@ import 'package:pshared/models/payment/type.dart';
 
 abstract class PaymentMethodData {
   PaymentType get type;
+  Map<String, String>? get metadata;
 }
 
 typedef MethodMap = Map<PaymentType, PaymentMethodData?>;

frontend/pshared/lib/models/payment/methods/iban.dart

@@ -2,7 +2,7 @@ import 'package:pshared/models/payment/methods/data.dart';
 import 'package:pshared/models/payment/type.dart';
 
 
-class IbanPaymentMethod extends PaymentMethodData {
+class IbanPaymentMethod implements PaymentMethodData {
   @override
   final PaymentType type = PaymentType.iban;
 
@@ -10,11 +10,14 @@ class IbanPaymentMethod extends PaymentMethodData {
   final String accountHolder;   // Full name of the recipient
   final String? bic;            // Optional: for cross-border transfers
   final String? bankName;       // Optional: for UI clarity
+  @override
+  final Map<String, String>? metadata;
 
-  IbanPaymentMethod({
+  const IbanPaymentMethod({
     required this.iban,
     required this.accountHolder,
     this.bic,
     this.bankName,
+    this.metadata,
   });
 }

frontend/pshared/lib/models/payment/methods/ledger.dart

@@ -0,0 +1,18 @@
+import 'package:pshared/models/payment/methods/data.dart';
+import 'package:pshared/models/payment/type.dart';
+
+
+class LedgerPaymentMethod implements PaymentMethodData {
+  @override
+  final PaymentType type = PaymentType.ledger;
+  final String ledgerAccountRef;
+  final String? contraLedgerAccountRef;
+  @override
+  final Map<String, String>? metadata;
+
+  const LedgerPaymentMethod({
+    required this.ledgerAccountRef,
+    this.contraLedgerAccountRef,
+    this.metadata,
+  });
+}

frontend/pshared/lib/models/payment/methods/managed_wallet.dart

@@ -0,0 +1,19 @@
+import 'package:pshared/models/payment/methods/data.dart';
+import 'package:pshared/models/payment/asset.dart';
+import 'package:pshared/models/payment/type.dart';
+
+
+class ManagedWalletPaymentMethod implements PaymentMethodData {
+  @override
+  final PaymentType type = PaymentType.managedWallet;
+  final String managedWalletRef;
+  final PaymentAsset? asset;
+  @override
+  final Map<String, String>? metadata;
+
+  const ManagedWalletPaymentMethod({
+    required this.managedWalletRef,
+    this.asset,
+    this.metadata,
+  });
+}

frontend/pshared/lib/models/payment/methods/russian_bank.dart

@@ -2,7 +2,7 @@ import 'package:pshared/models/payment/methods/data.dart';
 import 'package:pshared/models/payment/type.dart';
 
 
-class RussianBankAccountPaymentMethod extends PaymentMethodData {
+class RussianBankAccountPaymentMethod implements PaymentMethodData {
   @override
   final PaymentType type = PaymentType.bankAccount;
 
@@ -13,8 +13,10 @@ class RussianBankAccountPaymentMethod extends PaymentMethodData {
   final String bik;          
   final String accountNumber;
   final String correspondentAccount;
+  @override
+  final Map<String, String>? metadata;
 
-  RussianBankAccountPaymentMethod({
+  const RussianBankAccountPaymentMethod({
     required this.recipientName,
     required this.inn,
     required this.kpp,
@@ -22,5 +24,6 @@ class RussianBankAccountPaymentMethod extends PaymentMethodData {
     required this.bik,
     required this.accountNumber,
     required this.correspondentAccount,
+    this.metadata,
   });
 }

frontend/pshared/lib/models/payment/methods/wallet.dart

@@ -2,11 +2,14 @@ import 'package:pshared/models/payment/methods/data.dart';
 import 'package:pshared/models/payment/type.dart';
 
 
-class WalletPaymentMethod extends PaymentMethodData {
+class WalletPaymentMethod implements PaymentMethodData {
   @override
   final PaymentType type = PaymentType.wallet;
 
   final String walletId;
 
-  WalletPaymentMethod({required this.walletId});
+  @override
+  final Map<String, String>? metadata;
+
+  WalletPaymentMethod({required this.walletId, this.metadata});
 }

frontend/pshared/lib/models/payment/money.dart

@@ -0,0 +1,9 @@
+class Money {
+  final String amount;
+  final String currency;
+
+  const Money({
+    required this.amount,
+    required this.currency,
+  });
+}

frontend/pshared/lib/models/payment/payment.dart

@@ -0,0 +1,20 @@
+import 'package:pshared/models/payment/quote.dart';
+
+
+class Payment {
+  final String? paymentRef;
+  final String? idempotencyKey;
+  final String? state;
+  final String? failureCode;
+  final String? failureReason;
+  final PaymentQuote? lastQuote;
+
+  const Payment({
+    required this.paymentRef,
+    required this.idempotencyKey,
+    required this.state,
+    required this.failureCode,
+    required this.failureReason,
+    required this.lastQuote,
+  });
+}

frontend/pshared/lib/models/payment/quote.dart

@@ -0,0 +1,27 @@
+import 'package:pshared/models/payment/fees/line.dart';
+import 'package:pshared/models/payment/fx/quote.dart';
+import 'package:pshared/models/payment/money.dart';
+import 'package:pshared/models/payment/fees/network.dart';
+
+
+class PaymentQuote {
+  final String? quoteRef;
+  final Money? debitAmount;
+  final Money? expectedSettlementAmount;
+  final Money? expectedFeeTotal;
+  final String? feeQuoteToken;
+  final List<FeeLine>? feeLines;
+  final NetworkFee? networkFee;
+  final FxQuote? fxQuote;
+
+  const PaymentQuote({
+    required this.quoteRef,
+    required this.debitAmount,
+    required this.expectedSettlementAmount,
+    required this.expectedFeeTotal,
+    required this.feeQuoteToken,
+    required this.feeLines,
+    required this.networkFee,
+    required this.fxQuote,
+  });
+}

frontend/pshared/lib/models/payment/settlement_mode.dart

@@ -0,0 +1 @@
+enum SettlementMode { unspecified, fixSource, fixReceived }

frontend/pshared/lib/models/payment/type.dart

@@ -1,7 +1,10 @@
 enum PaymentType { 
+  ledger, 
+  managedWallet, 
+  externalChain,
   bankAccount, 
   iban, 
   wallet, 
   card,
-  cryptoAddress,
+  cardToken,
 }