add safe transfer memo parse (#1462)

Author: boyan01

lib/widgets/message/item/transfer/safe_transfer_dialog.dart

@@ -11,6 +11,8 @@ import '../../../../ui/provider/transfer_provider.dart';
 import '../../../../utils/extension/extension.dart';
 import '../../../buttons.dart';
 import '../../../dialog.dart';
+import '../../../high_light_text.dart';
+import 'safe_transfer_message.dart';
 import 'transfer_page.dart';
 
 Future<void> showSafeTransferDialog(BuildContext context, String snapshotId) =>
@@ -151,6 +153,7 @@ class _SafeTransactionDetailInfo extends ConsumerWidget {
   @override
   Widget build(BuildContext context, WidgetRef ref) {
     final createdAt = DateTime.parse(snapshot.createdAt).toLocal();
+    final memo = parseSafeSnapshotMemo(snapshot.memo);
     return Padding(
       padding: const EdgeInsets.only(left: 24, right: 24, top: 20),
       child: Column(
@@ -196,10 +199,10 @@ class _SafeTransactionDetailInfo extends ConsumerWidget {
                         ''),
               ),
             ),
-            if (!snapshot.memo.isNullOrBlank())
+            if (!memo.isNullOrBlank())
               TransactionInfoTile(
                 title: Text(context.l10n.memo),
-                subtitle: SelectableText(snapshot.memo),
+                subtitle: SelectionArea(child: CustomText(memo)),
               ),
           ] else if (type == SnapshotType.deposit &&
               snapshot.deposit != null) ...[

lib/widgets/message/item/transfer/safe_transfer_message.dart

@@ -2,6 +2,7 @@ import 'dart:async';
 import 'dart:convert';
 
 import 'package:auto_size_text/auto_size_text.dart';
+import 'package:convert/convert.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_hooks/flutter_hooks.dart';
 import 'package:flutter_svg/flutter_svg.dart';
@@ -14,13 +15,27 @@ import '../../../../db/mixin_database.dart';
 import '../../../../ui/provider/transfer_provider.dart';
 import '../../../../utils/extension/extension.dart';
 import '../../../cache_image.dart';
+import '../../../high_light_text.dart';
 import '../../../interactive_decorated_box.dart';
 import '../../message.dart';
 import '../../message_bubble.dart';
 import '../../message_datetime_and_status.dart';
 import '../unknown_message.dart';
 import 'safe_transfer_dialog.dart';
 
+String parseSafeSnapshotMemo(String? raw) {
+  if (raw == null || raw.isEmpty) {
+    return '';
+  }
+  try {
+    final bytes = hex.decode(raw);
+    return utf8.decode(bytes, allowMalformed: false);
+  } catch (error, stacktrace) {
+    e('decode memo failed', error, stacktrace);
+    return raw;
+  }
+}
+
 class SafeTransferMessage extends HookConsumerWidget {
   const SafeTransferMessage({super.key});
 
@@ -90,6 +105,10 @@ class SafeTransferMessage extends HookConsumerWidget {
       },
       [snapshotId],
     );
+    final memo = useMemoized(
+      () => parseSafeSnapshotMemo(snapshotMemo),
+      [snapshotMemo],
+    );
     if (snapshotId == null) {
       return const UnknownMessage();
     }
@@ -113,7 +132,7 @@ class SafeTransferMessage extends HookConsumerWidget {
             assetSymbol: assetSymbol ?? '',
             assetIcon: assetIcon,
             snapshotAmount: snapshotAmount,
-            memo: snapshotMemo ?? '',
+            memo: memo,
           ),
         ),
       ),
@@ -184,7 +203,7 @@ class _SnapshotLayout extends StatelessWidget {
                 ),
                 if (memo.isNotEmpty) ...[
                   const SizedBox(height: 10),
-                  Text(
+                  CustomText(
                     memo,
                     style: TextStyle(
                       color: context.theme.secondaryText,