Generic fixes for payjoin (#2342)

* feat: enhance Payjoin transaction details with block explorer link

* feat: enhance Payjoin transaction details with block explorer link

* fix: handle connectivity errors in Payjoin session operations

cw_bitcoin/lib/bitcoin_wallet_addresses.dart

@@ -67,6 +67,8 @@ abstract class BitcoinWalletAddressesBase extends ElectrumWalletAddresses with S
       payjoinManager.resumeSessions();
     } catch (e) {
       printV(e);
+      // Ignore Connectivity errors
+      if (!e.toString().contains("error sending request for url")) rethrow;
     }
   }
 
@@ -79,6 +81,8 @@ abstract class BitcoinWalletAddressesBase extends ElectrumWalletAddresses with S
       payjoinManager.spawnReceiver(receiver: currentPayjoinReceiver!);
     } catch (e) {
       printV(e);
+      // Ignore Connectivity errors
+      if (!e.toString().contains("error sending request for url")) rethrow;
     }
   }
 }

cw_bitcoin/lib/payjoin/payjoin_send_worker.dart

@@ -106,8 +106,8 @@ class PayjoinSenderWorker {
       sendPort.send({'type': PayjoinSenderRequestTypes.requestPosted});
 
       return await postRequest.$2.processResponse(response: response);
-    } catch (e) {
+    } catch (e, stack) {
-      throw PayjoinSessionError.unrecoverable('Send V1 payjoin error: $e');
+      throw PayjoinSessionError.unrecoverable('Send V1 payjoin error: $e, $stack');
     }
   }
 

lib/view_model/payjoin_details_view_model.dart

@@ -4,7 +4,9 @@ import 'package:cake_wallet/bitcoin/bitcoin.dart';
 import 'package:cake_wallet/generated/i18n.dart';
 import 'package:cake_wallet/src/screens/trade_details/trade_details_list_card.dart';
 import 'package:cake_wallet/src/screens/trade_details/trade_details_status_item.dart';
+import 'package:cake_wallet/src/screens/transaction_details/blockexplorer_list_item.dart';
 import 'package:cake_wallet/src/screens/transaction_details/standart_list_item.dart';
+import 'package:cake_wallet/src/screens/transaction_details/transaction_details_list_item.dart';
 import 'package:cake_wallet/themes/core/theme_store.dart';
 import 'package:cake_wallet/utils/date_formatter.dart';
 import 'package:cw_core/payjoin_session.dart';
@@ -12,6 +14,7 @@ import 'package:cw_core/transaction_info.dart';
 import 'package:flutter/widgets.dart';
 import 'package:hive_flutter/hive_flutter.dart';
 import 'package:mobx/mobx.dart';
+import 'package:url_launcher/url_launcher.dart';
 
 part 'payjoin_details_view_model.g.dart';
 
@@ -40,7 +43,7 @@ abstract class PayjoinDetailsViewModelBase with Store {
   @observable
   late PayjoinSession payjoinSession;
 
-  final ObservableList<StandartListItem> items;
+  final ObservableList<TransactionDetailsListItem> items;
 
   late final StreamSubscription<BoxEvent> listener;
 
@@ -69,12 +72,25 @@ abstract class PayjoinDetailsViewModelBase with Store {
           title: S.current.error,
           value: payjoinSession.error!,
         ),
-      if (payjoinSession.txId?.isNotEmpty == true && transactionInfo != null)
+      if (payjoinSession.txId?.isNotEmpty == true && transactionInfo != null) ...[
         StandartListItem(
           title: S.current.transaction_details_transaction_id,
           value: payjoinSession.txId!,
           key: ValueKey('standard_list_item_transaction_details_id_key'),
+        ),
+        BlockExplorerListItem(
+          title: S.current.view_in_block_explorer,
+          value: '${S.current.view_transaction_on}mempool.space',
+          onTap: () async {
+            try {
+              final uri = Uri.parse('https://mempool.cakewallet.com/tx/${payjoinSession.txId!}');
+              if (await canLaunchUrl(uri))
+                await launchUrl(uri, mode: LaunchMode.externalApplication);
+            } catch (e) {}
+          },
+          key: ValueKey('block_explorer_list_item_wallet_type_key'),
         )
+      ]
     ]);
 
     if (transactionInfo != null) {