feat: Add memo support for swap (#3229)

* feat: Add memo support for swap

* fix: Error on swap page select receiver bottomsheet when picking receiveing currency that's not a wallet type

* feat: exclude providers that do not support memo when receive currency needs it, also show passed memo in confirmation and trade history sheets

* fix: overflow for destination tag on swap confirmation

* Update lib/view_model/exchange/exchange_view_model.dart [skip ci]

* Update lib/exchange/provider/trocador_exchange_provider.dart [skip ci]

---------

Co-authored-by: Omar Hatem <omarh.ismail1@gmail.com>

lib/exchange/provider/chainflip_exchange_provider.dart

@@ -51,6 +51,9 @@ class ChainflipExchangeProvider extends ExchangeProvider {
   @override
   bool get supportsFixedRate => false;
 
+  @override
+  bool get supportsMemoOrDestinationTag => false;
+
   @override
   ExchangeProviderDescription get description =>
       ExchangeProviderDescription.chainflip;

lib/exchange/provider/changenow_exchange_provider.dart

@@ -189,6 +189,7 @@ class ChangeNowExchangeProvider extends ExchangeProvider {
       if (!isFixedRateMode) 'fromAmount': request.fromAmount,
       if (isFixedRateMode) 'toAmount': request.toAmount,
       'address': request.toAddress,
+      if (request.toAddressExtraId.isNotEmpty) 'extraId': request.toAddressExtraId,
       'flow': _getFlow(isFixedRateMode),
       'type': type,
       'refundAddress': request.refundAddress,
@@ -248,6 +249,7 @@ class ChangeNowExchangeProvider extends ExchangeProvider {
       state: TradeState.created,
       payoutAddress: payoutAddress,
       isSendAll: isSendAll,
+      toAddressExtraId: request.toAddressExtraId,
     );
   }
 

lib/exchange/provider/exchange_provider.dart

@@ -19,6 +19,8 @@ abstract class ExchangeProvider {
 
   bool get supportsOnionAddress => false;
 
+  bool get supportsMemoOrDestinationTag => true;
+
   @override
   String toString() => title;
 

lib/exchange/provider/exolix_exchange_provider.dart

@@ -198,6 +198,8 @@ class ExolixExchangeProvider extends ExchangeProvider {
       'networkFrom': _networkFor(request.fromCurrency),
       'networkTo': _networkFor(request.toCurrency),
       'withdrawalAddress': await _normalizeAddress(request.toAddress),
+      if (request.toAddressExtraId.isNotEmpty)
+        'withdrawalExtraId': request.toAddressExtraId,
       'refundAddress': await _normalizeAddress(request.refundAddress),
       'rateType': _getRateType(isFixedRateMode),
       'apiToken': apiKey,
@@ -315,6 +317,7 @@ class ExolixExchangeProvider extends ExchangeProvider {
       state: TradeState.created,
       payoutAddress: payoutAddress,
       isSendAll: isSendAll,
+      toAddressExtraId: request.toAddressExtraId,
     );
   }
 

lib/exchange/provider/jupiter_exchange_provider.dart

@@ -41,6 +41,9 @@ class JupiterExchangeProvider extends ExchangeProvider {
   @override
   bool get supportsFixedRate => false; // Jupiter doesn't support fixed rate
 
+  @override
+  bool get supportsMemoOrDestinationTag => false;
+
   @override
   ExchangeProviderDescription get description => ExchangeProviderDescription.jupiter;
 

lib/exchange/provider/letsexchange_exchange_provider.dart

@@ -174,7 +174,7 @@ class LetsExchangeExchangeProvider extends ExchangeProvider {
         if (!isFixedRateMode) 'deposit_amount': request.fromAmount.toString(),
         'withdrawal': withdrawalAddress,
         if (isFixedRateMode) 'withdrawal_amount': request.toAmount.toString(),
-        'withdrawal_extra_id': '',
+        'withdrawal_extra_id': request.toAddressExtraId,
         'return': returnAddress,
         'rate_id': rateId,
         if (networkFrom != null) 'network_from': networkFrom,
@@ -302,6 +302,7 @@ class LetsExchangeExchangeProvider extends ExchangeProvider {
         expiredAt: expiredAt,
         extraId: extraId,
         isSendAll: isSendAll,
+        toAddressExtraId: request.toAddressExtraId,
       );
     } catch (e, s) {
       ExchangeProviderLogger.logError(

lib/exchange/provider/near_Intents_exchange_provider.dart

@@ -88,6 +88,9 @@ class NearIntentsExchangeProvider extends ExchangeProvider {
   @override
   bool get supportsFixedRate => true;
 
+  @override
+  bool get supportsMemoOrDestinationTag => false;
+
   @override
   ExchangeProviderDescription get description =>
       ExchangeProviderDescription.nearIntents;

lib/exchange/provider/sideshift_exchange_provider.dart

@@ -216,6 +216,7 @@ class SideShiftExchangeProvider extends ExchangeProvider {
     final body = {
       'affiliateId': affiliateId,
       'settleAddress': request.toAddress,
+      if (request.toAddressExtraId.isNotEmpty) 'settleMemo': request.toAddressExtraId,
       'refundAddress': request.refundAddress,
     };
 
@@ -336,6 +337,7 @@ class SideShiftExchangeProvider extends ExchangeProvider {
       createdAt: DateTime.now(),
       isSendAll: isSendAll,
       extraId: depositMemo,
+      toAddressExtraId: request.toAddressExtraId,
     );
   }
 

lib/exchange/provider/simpleswap_exchange_provider.dart

@@ -180,7 +180,8 @@ class SimpleSwapExchangeProvider extends ExchangeProvider {
       "amount": request.fromAmount,
       "fixed": isFixedRateMode,
       "user_refund_address": _normalizeAddress(request.refundAddress),
-      "address_to": _normalizeAddress(request.toAddress)
+      "address_to": _normalizeAddress(request.toAddress),
+      if (request.toAddressExtraId.isNotEmpty) "extra_id_to": request.toAddressExtraId,
     };
     final uri = Uri.https(apiAuthority, createExchangePath, params);
 
@@ -289,6 +290,7 @@ class SimpleSwapExchangeProvider extends ExchangeProvider {
       payoutAddress: payoutAddress,
       createdAt: DateTime.now(),
       isSendAll: isSendAll,
+      toAddressExtraId: request.toAddressExtraId,
     );
   }
 

lib/exchange/provider/stealth_ex_exchange_provider.dart

@@ -186,6 +186,7 @@ class StealthExExchangeProvider extends ExchangeProvider {
         'amount':
             isFixedRateMode ? double.parse(request.toAmount) : double.parse(request.fromAmount),
         'address': _normalizeAddress(request.toAddress),
+        if (request.toAddressExtraId.isNotEmpty) 'extra_id': request.toAddressExtraId,
         'refund_address': _normalizeAddress(request.refundAddress),
         'additional_fee_percent': _additionalFeePercent,
       };
@@ -299,6 +300,7 @@ class StealthExExchangeProvider extends ExchangeProvider {
         expiredAt: expiredAt,
         extraId: extraId,
         isSendAll: isSendAll,
+        toAddressExtraId: request.toAddressExtraId,
       );
     } catch (e, s) {
       ExchangeProviderLogger.logError(

lib/exchange/provider/swapsxyz_exchange_provider.dart

@@ -54,6 +54,9 @@ class SwapsXyzExchangeProvider extends ExchangeProvider {
   @override
   bool get supportsFixedRate => false;
 
+  @override
+  bool get supportsMemoOrDestinationTag => false;
+
   @override
   ExchangeProviderDescription get description =>
       ExchangeProviderDescription.swapsXyz;

lib/exchange/provider/swaptrade_exchange_provider.dart

@@ -37,6 +37,9 @@ class SwapTradeExchangeProvider extends ExchangeProvider {
   @override
   bool get supportsFixedRate => false;
 
+  @override
+  bool get supportsMemoOrDestinationTag => false;
+
   @override
   ExchangeProviderDescription get description => ExchangeProviderDescription.swapTrade;
 

lib/exchange/provider/thorchain_exchange.provider.dart

@@ -36,6 +36,9 @@ class ThorChainExchangeProvider extends ExchangeProvider {
   @override
   bool get supportsFixedRate => false;
 
+  @override
+  bool get supportsMemoOrDestinationTag => false;
+
   @override
   ExchangeProviderDescription get description => ExchangeProviderDescription.thorChain;
 

lib/exchange/provider/trocador_exchange_provider.dart

@@ -235,6 +235,7 @@ class TrocadorExchangeProvider extends ExchangeProvider {
       if (!isFixedRateMode) 'amount_from': request.fromAmount,
       if (isFixedRateMode) 'amount_to': request.toAmount,
       'address': request.toAddress,
+      if (request.toAddressExtraId.isNotEmpty) 'address_memo': request.toAddressExtraId,
       'refund': request.refundAddress,
       'refund_memo': '0',
     };
@@ -392,6 +393,7 @@ class TrocadorExchangeProvider extends ExchangeProvider {
       payoutAddress: payoutAddress,
       isSendAll: isSendAll,
       extraId: addressProviderMemo,
+      toAddressExtraId: request.toAddressExtraId,
     );
   }
 

lib/exchange/provider/xoswap_exchange_provider.dart

@@ -321,6 +321,7 @@ class XOSwapExchangeProvider extends ExchangeProvider {
         'fromAddress': request.refundAddress,
         'toAmount': request.toAmount,
         'toAddress': request.toAddress,
+        if (request.toAddressExtraId.isNotEmpty) 'toAddressTag': request.toAddressExtraId,
         'pairId': pairId,
       };
 
@@ -424,6 +425,7 @@ class XOSwapExchangeProvider extends ExchangeProvider {
         payoutAddress: payoutAddress,
         extraId: extraId,
         isSendAll: isSendAll,
+        toAddressExtraId: request.toAddressExtraId,
       );
     } catch (e, s) {
       ExchangeProviderLogger.logError(

lib/exchange/trade.dart

@@ -27,6 +27,7 @@ class Trade {
     this.refundAddress,
     this.walletId,
     this.payoutAddress,
+    this.toAddressExtraId,
     this.password,
     this.providerId,
     this.providerName,
@@ -86,6 +87,9 @@ class Trade {
   String? refundAddress;
   String? walletId;
   String? payoutAddress;
+
+  // holds the receive address memo or destination tag that was passed for this trade
+  String? toAddressExtraId;
   String? password;
   String? providerId;
   String? providerName;
@@ -221,6 +225,7 @@ class Trade {
       'refundAddress': refundAddress,
       'walletId': walletId,
       'payoutAddress': payoutAddress,
+      'toAddressExtraId': toAddressExtraId,
       'password': password,
       'providerId': providerId,
       'providerName': providerName,
@@ -264,6 +269,7 @@ class Trade {
       refundAddress: row['refundAddress'] as String?,
       walletId: row['walletId'] as String?,
       payoutAddress: row['payoutAddress'] as String?,
+      toAddressExtraId: row['toAddressExtraId'] as String?,
       password: row['password'] as String?,
       providerId: row['providerId'] as String?,
       providerName: row['providerName'] as String?,

lib/exchange/trade_request.dart

@@ -8,6 +8,7 @@ class TradeRequest {
       required this.refundAddress,
       required this.fromAmount,
       this.toAmount = '',
+      this.toAddressExtraId = '',
       this.isFixedRate = false});
 
   final CryptoCurrency fromCurrency;
@@ -16,5 +17,6 @@ class TradeRequest {
   final String refundAddress;
   final String fromAmount;
   final String toAmount;
+  final String toAddressExtraId;
   final bool isFixedRate;
 }

lib/new-ui/pages/swap_page.dart

@@ -12,6 +12,7 @@ import 'package:cake_wallet/new-ui/widgets/keyboard_hide_overlay.dart';
 import 'package:cake_wallet/new-ui/widgets/modern_button.dart';
 import 'package:cake_wallet/new-ui/widgets/receive_page/receive_top_bar.dart';
 import 'package:cake_wallet/new-ui/widgets/send_page/fiat_amount_bar.dart';
+import 'package:cake_wallet/new-ui/widgets/send_page/send_memo_input.dart';
 import 'package:cake_wallet/new-ui/widgets/send_page/send_syncing_indicator.dart';
 import 'package:cake_wallet/new-ui/widgets/swap_page/provider_selector_page.dart';
 import 'package:cake_wallet/new-ui/widgets/swap_page/refund_address_modal.dart';
@@ -37,6 +38,7 @@ import 'package:cake_wallet/view_model/exchange/exchange_trade_view_model.dart';
 import 'package:cake_wallet/view_model/exchange/exchange_view_model.dart';
 import 'package:cake_wallet/view_model/wallet_switcher_view_model.dart';
 import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_core/currencies_with_memo.dart';
 import 'package:cw_core/currency.dart';
 import 'package:cw_core/sync_status.dart';
 import 'package:cw_core/utils/print_verbose.dart';
@@ -837,12 +839,43 @@ class SwapAmountBoxState extends State<SwapAmountBox> {
   final amountController = TextEditingController();
   final fiatAmountController = TextEditingController();
   final amountFocusNode = FocusNode();
+  final memoController = TextEditingController();
+  ReactionDisposer? _memoReactionDisposer;
+  VoidCallback? _memoListener;
 
   @override
   void initState() {
     _selectedCurrency = widget.initialCurrency;
 
     super.initState();
+
+    if (widget.isReceiverCard) {
+      memoController.text = widget.exchangeViewModel.receiveAddressExtraId;
+
+      _memoListener = () {
+        if (widget.exchangeViewModel.receiveAddressExtraId != memoController.text) {
+          widget.exchangeViewModel.receiveAddressExtraId = memoController.text;
+        }
+      };
+      memoController.addListener(_memoListener!);
+
+      _memoReactionDisposer =
+          reaction((_) => widget.exchangeViewModel.receiveAddressExtraId, (String value) {
+        if (memoController.text != value) {
+          memoController.text = value;
+        }
+      });
+    }
+  }
+
+  @override
+  void dispose() {
+    if (_memoListener != null) {
+      memoController.removeListener(_memoListener!);
+    }
+    _memoReactionDisposer?.call();
+    memoController.dispose();
+    super.dispose();
   }
 
   late Currency _selectedCurrency;
@@ -1128,7 +1161,29 @@ class SwapAmountBoxState extends State<SwapAmountBox> {
                       ],
                     );
                   },
-                )
+                ),
+                if (widget.isReceiverCard)
+                  Observer(builder: (_) {
+                    final selected = widget.exchangeViewModel.receiveCurrency;
+                    final labelType = memoLabelTypeFor(selected);
+                    if (labelType == null) return const SizedBox.shrink();
+                    
+                    final isDestinationTag = labelType == MemoLabelType.destinationTag;
+                    final hint = isDestinationTag
+                        ? S.of(context).destination_tag_optional
+                        : S.of(context).memo_optional;
+                    final disclaimer = isDestinationTag
+                        ? S.of(context).destination_tag_swap_disclaimer
+                        : S.of(context).memo_swap_disclaimer;
+                          
+                    return NewSendMemoInput(
+                      memoController: memoController,
+                      maxMemoLength: isDestinationTag ? 20 : 256,
+                      memoLength: memoController.text.length,
+                      hintText: hint,
+                      disclaimerText: disclaimer,
+                    );
+                  }),
               ],
             ),
           ),

lib/new-ui/widgets/send_page/send_memo_input.dart

@@ -8,11 +8,15 @@ class NewSendMemoInput extends StatelessWidget {
       {super.key,
       required this.memoController,
       required this.maxMemoLength,
-      required this.memoLength});
+      required this.memoLength,
+      this.hintText,
+      this.disclaimerText});
 
   final TextEditingController memoController;
   final int maxMemoLength;
   final int memoLength;
+  final String? hintText;
+  final String? disclaimerText;
 
   @override
   Widget build(BuildContext context) {
@@ -30,8 +34,8 @@ class NewSendMemoInput extends StatelessWidget {
                 child: TextField(
                   maxLength: maxMemoLength,
                   controller: memoController,
-                  decoration:
-                      InputDecoration(hintText: S.of(context).memo_optional, counterText: ""),
+                  decoration: InputDecoration(
+                      hintText: hintText ?? S.of(context).memo_optional, counterText: ""),
                 ),
               ),
               SizedBox(width: 12),
@@ -52,9 +56,12 @@ class NewSendMemoInput extends StatelessWidget {
           child: Row(
             mainAxisAlignment: MainAxisAlignment.spaceBetween,
             children: [
-              Text(S.of(context).memo_disclaimer,
-                  style: TextStyle(
-                      fontSize: 12, color: Theme.of(context).colorScheme.onSurfaceVariant)),
+              Expanded(
+                child: Text(disclaimerText ?? S.of(context).memo_disclaimer,
+                    style: TextStyle(
+                        fontSize: 12,
+                        color: Theme.of(context).colorScheme.onSurfaceVariant)),
+              ),
               Text("${memoController.text.length} / ${maxMemoLength}",
                   style: TextStyle(fontSize: 12, color: Theme.of(context).colorScheme.primary))
             ],

lib/new-ui/widgets/swap_page/swap_confirm_sheet.dart

@@ -14,6 +14,7 @@ import 'package:cake_wallet/src/widgets/new_list_row/new_list_section.dart';
 import 'package:cake_wallet/view_model/exchange/exchange_trade_view_model.dart';
 import 'package:cake_wallet/view_model/exchange/exchange_view_model.dart';
 import 'package:cake_wallet/view_model/send/send_view_model_state.dart';
+import 'package:cw_core/currencies_with_memo.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_mobx/flutter_mobx.dart';
@@ -191,7 +192,19 @@ class SwapTransactionDetails extends StatelessWidget {
                           showArrow: false,
                           trailingText: exchangeViewModel.receiveAddressDisplayName ??
                               middleTruncate(
-                                  exchangeTradeViewModel.trade.payoutAddress ?? "", 8, 8))
+                                  exchangeTradeViewModel.trade.payoutAddress ?? "", 8, 8)),
+                      if ((exchangeTradeViewModel.trade.toAddressExtraId ?? '').isNotEmpty)
+                        ListItemRegularRow(
+                          keyValue: "receive memo",
+                          showArrow: false,
+                          label: memoLabelTypeFor(exchangeViewModel.receiveCurrency) ==
+                                  MemoLabelType.destinationTag
+                              ? S.of(context).destination_tag
+                              : S.of(context).memo,
+                          trailingText: middleTruncate(
+                              exchangeTradeViewModel.trade.toAddressExtraId ?? "", 8, 8),
+                          copyableText: exchangeTradeViewModel.trade.toAddressExtraId,
+                        ),
                     ],
                     "${S.of(context).swap_id} (${S.of(context).tap_to_copy})": [
                       ListItemRegularRow(

lib/view_model/exchange/exchange_view_model.dart

@@ -57,6 +57,7 @@ import 'package:cake_wallet/view_model/send/fees_view_model.dart';
 import 'package:cake_wallet/view_model/unspent_coins/unspent_coins_list_view_model.dart';
 import 'package:cw_core/crypto_amount_format.dart';
 import 'package:cw_core/crypto_currency.dart';
+import 'package:cw_core/currencies_with_memo.dart';
 import 'package:cw_core/erc20_token.dart';
 import 'package:cw_core/spl_token.dart';
 import 'package:cw_core/sync_status.dart';
@@ -124,12 +125,7 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
     _useTorOnly = _settingsStore.exchangeStatus == ExchangeApiMode.torOnly;
     _setProviders();
     const excludeDepositCurrencies = [CryptoCurrency.btt];
-    const excludeReceiveCurrencies = [
-      CryptoCurrency.xlm,
-      CryptoCurrency.xrp,
-      CryptoCurrency.bnb,
-      CryptoCurrency.btt
-    ];
+    const excludeReceiveCurrencies = [CryptoCurrency.btt];
     _initialPairBasedOnWallet();
 
     unspentCoinsListViewModel.initialSetup().then((_) {
@@ -391,6 +387,9 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
   @observable
   String receiveAddress;
 
+  @observable
+  String receiveAddressExtraId = '';
+
   @observable
   String? receiveAddressDisplayName;
 
@@ -436,13 +435,18 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
 
   @computed
   Future<List<WalletInfo>> get receiveWallets async {
-    WalletType? type;
-    type = cryptoCurrencyOrTokenToWalletType(receiveCurrency);
-    if (type == null) {
-      type = cryptoCurrencyOrTokenToWalletType(CryptoCurrency.fromString(receiveCurrency.tag ?? ""));
-    }
+    try {
+      WalletType? type;
+      type = cryptoCurrencyOrTokenToWalletType(receiveCurrency);
+      if (type == null) {
+        type =
+            cryptoCurrencyOrTokenToWalletType(CryptoCurrency.fromString(receiveCurrency.tag ?? ""));
+      }
 
-    return await WalletInfo.selectList("type = ?", [type!.index]);
+      return await WalletInfo.selectList("type = ?", [type!.index]);
+    } catch (e) {
+      return [];
+    }
   }
 
   Future<List<WalletInfoAddressInfo>> addressesForAccountsWallet(WalletInfo wallet) async {
@@ -761,6 +765,9 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
         currency == receiveCurrency)) {
       receiveAddress = "";
     }
+    if (currency != receiveCurrency) {
+      receiveAddressExtraId = "";
+    }
 
     receiveCurrency = currency;
     isFixedRateMode = false;
@@ -884,6 +891,9 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
       (provider.description == ExchangeProviderDescription.swapsXyz ||
           provider.description == ExchangeProviderDescription.nearIntents);
 
+  bool _excludeProviderForReceiveExtraId(ExchangeProvider provider) =>
+      memoLabelTypeFor(receiveCurrency) != null && !provider.supportsMemoOrDestinationTag;
+
   Future<void> calculateBestRate() async {
     if (depositCurrency == receiveCurrency) {
       bestRate = 0.0;
@@ -895,6 +905,7 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
 
     final validProvidersForAmount = _tradeAvailableProviders.where((provider) {
       if (_excludeProviderForSwapAll(provider)) return false;
+      if (_excludeProviderForReceiveExtraId(provider)) return false;
 
       final limits = _providerLimits[provider];
 
@@ -972,6 +983,7 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
     try {
       final futures = selectedProviders
           .where((provider) => providerList.contains(provider))
+          .where((provider) => !_excludeProviderForReceiveExtraId(provider))
           .map((provider) async {
         final limits = await provider
             .fetchLimits(
@@ -1050,6 +1062,13 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
       }
     }
 
+    if (forcedProvider != null && _excludeProviderForReceiveExtraId(forcedProvider!)) {
+      tradeState = TradeIsCreatedFailure(
+          title: S.current.trade_not_created,
+          error: S.current.none_of_selected_providers_can_exchange);
+      return;
+    }
+
     Map<double, ExchangeProvider> providers;
     if (forcedProvider != null) {
       providers = {forcedProviderRate: forcedProvider!};
@@ -1138,6 +1157,10 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
         if (isFixedRateMode && provider.supportsFixedRate == false) {
           continue;
         }
+        
+        if (_excludeProviderForReceiveExtraId(provider)) {
+          continue;
+        }
 
         // Skip Swaps.xyz when sending from external
         if (isSendFromExternal &&
@@ -1160,6 +1183,7 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
           toAmount: _receiveAmount.replaceAll(',', '.'),
           refundAddress: depositAddress,
           toAddress: receiveAddress,
+          toAddressExtraId: receiveAddressExtraId.trim(),
           isFixedRate: isFixedRateMode,
         );
 
@@ -1260,6 +1284,7 @@ abstract class ExchangeViewModelBase extends WalletChangeListenerViewModel with
         depositCurrency == wallet.currency ? wallet.walletAddresses.addressForExchange : '';
     receiveAddress =
         receiveCurrency == wallet.currency ? wallet.walletAddresses.addressForExchange : '';
+    receiveAddressExtraId = '';
     isDepositAddressEnabled = !(depositCurrency == wallet.currency);
     isFixedRateMode = false;
     _onPairChange();

lib/view_model/trade_details_view_model.dart

@@ -26,6 +26,7 @@ import 'package:cake_wallet/src/screens/transaction_details/standart_list_item.d
 import 'package:cake_wallet/store/app_store.dart';
 import 'package:cake_wallet/utils/date_formatter.dart';
 import 'package:cake_wallet/utils/show_bar.dart';
+import 'package:cw_core/currencies_with_memo.dart';
 import 'package:cw_core/utils/print_verbose.dart';
 import 'package:flutter/services.dart';
 import 'package:mobx/mobx.dart';
@@ -182,6 +183,18 @@ abstract class TradeDetailsViewModelBase with Store {
       ));
     }
 
+    final destinationMemo = trade.toAddressExtraId;
+    final destinationCurrency = trade.to;
+    if (destinationMemo != null &&
+        destinationMemo.isNotEmpty &&
+        destinationCurrency != null) {
+      final isDestinationTag =
+          memoLabelTypeFor(destinationCurrency) == MemoLabelType.destinationTag;
+      items.add(StandartListItem(
+          title: isDestinationTag ? S.current.destination_tag : S.current.memo,
+          value: destinationMemo));
+    }
+
     items.add(StandartListItem(
         title: S.current.trade_details_provider, value: trade.provider.toString()));