From b2097cf04491de98d01ddce2ef817dbcb1e579c9 Mon Sep 17 00:00:00 2001
From: LittleSheep <littlesheep.code@hotmail.com>
Date: Fri, 22 Aug 2025 19:00:06 +0800
Subject: [PATCH] :bug: Fix chat summary failed when lastMessage is null

---
 lib/models/chat.dart       |  2 +-
 lib/models/chat.g.dart     | 11 +++++---
 lib/screens/chat/chat.dart | 55 +++++++++++++++++++++-----------------
 3 files changed, 38 insertions(+), 30 deletions(-)

diff --git a/lib/models/chat.dart b/lib/models/chat.dart
index 42f39685..9966e50a 100644
--- a/lib/models/chat.dart
+++ b/lib/models/chat.dart
@@ -104,7 +104,7 @@ sealed class SnChatMember with _$SnChatMember {
 sealed class SnChatSummary with _$SnChatSummary {
   const factory SnChatSummary({
     required int unreadCount,
-    required SnChatMessage lastMessage,
+    required SnChatMessage? lastMessage,
   }) = _SnChatSummary;
 
   factory SnChatSummary.fromJson(Map<String, dynamic> json) =>
diff --git a/lib/models/chat.g.dart b/lib/models/chat.g.dart
index e16bf6c7..f1dedb54 100644
--- a/lib/models/chat.g.dart
+++ b/lib/models/chat.g.dart
@@ -213,15 +213,18 @@ Map<String, dynamic> _$SnChatMemberToJson(_SnChatMember instance) =>
 _SnChatSummary _$SnChatSummaryFromJson(Map<String, dynamic> json) =>
     _SnChatSummary(
       unreadCount: (json['unread_count'] as num).toInt(),
-      lastMessage: SnChatMessage.fromJson(
-        json['last_message'] as Map<String, dynamic>,
-      ),
+      lastMessage:
+          json['last_message'] == null
+              ? null
+              : SnChatMessage.fromJson(
+                json['last_message'] as Map<String, dynamic>,
+              ),
     );
 
 Map<String, dynamic> _$SnChatSummaryToJson(_SnChatSummary instance) =>
     <String, dynamic>{
       'unread_count': instance.unreadCount,
-      'last_message': instance.lastMessage.toJson(),
+      'last_message': instance.lastMessage?.toJson(),
     };
 
 _MessageChange _$MessageChangeFromJson(Map<String, dynamic> json) =>
diff --git a/lib/screens/chat/chat.dart b/lib/screens/chat/chat.dart
index 1273181b..6c08093e 100644
--- a/lib/screens/chat/chat.dart
+++ b/lib/screens/chat/chat.dart
@@ -79,33 +79,38 @@ class ChatRoomListTile extends HookConsumerWidget {
                     color: Theme.of(context).colorScheme.primary,
                   ),
                 ),
-              Row(
-                spacing: 4,
-                children: [
-                  Badge(
-                    label: Text(data.lastMessage.sender.account.nick),
-                    textColor: Theme.of(context).colorScheme.onPrimary,
-                    backgroundColor: Theme.of(context).colorScheme.primary,
-                  ),
-                  Expanded(
-                    child: Text(
-                      (data.lastMessage.content?.isNotEmpty ?? false)
-                          ? data.lastMessage.content!
-                          : 'messageNone'.tr(),
-                      maxLines: 1,
-                      overflow: TextOverflow.ellipsis,
-                      style: Theme.of(context).textTheme.bodySmall,
+              if (data.lastMessage == null)
+                Text(room.description ?? 'descriptionNone'.tr(), maxLines: 1)
+              else
+                Row(
+                  spacing: 4,
+                  children: [
+                    Badge(
+                      label: Text(data.lastMessage!.sender.account.nick),
+                      textColor: Theme.of(context).colorScheme.onPrimary,
+                      backgroundColor: Theme.of(context).colorScheme.primary,
                     ),
-                  ),
-                  Align(
-                    alignment: Alignment.centerRight,
-                    child: Text(
-                      RelativeTime(context).format(data.lastMessage.createdAt),
-                      style: Theme.of(context).textTheme.bodySmall,
+                    Expanded(
+                      child: Text(
+                        (data.lastMessage!.content?.isNotEmpty ?? false)
+                            ? data.lastMessage!.content!
+                            : 'messageNone'.tr(),
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: Theme.of(context).textTheme.bodySmall,
+                      ),
                     ),
-                  ),
-                ],
-              ),
+                    Align(
+                      alignment: Alignment.centerRight,
+                      child: Text(
+                        RelativeTime(
+                          context,
+                        ).format(data.lastMessage!.createdAt),
+                        style: Theme.of(context).textTheme.bodySmall,
+                      ),
+                    ),
+                  ],
+                ),
             ],
           );
         },