Merge branch 'master' of https://gitea.nxsir.cn/nanxun/IM_NEW

MessageService.Domain/Entities/Conversation.cs

@@ -52,6 +52,7 @@ namespace MessageService.Domain.Entities
             UnreadCount = unreadCount;
             ChatType = chatType;
             LastMessage = lastMessage;
+            ModificationTime = DateTime.Now;
             StreamKey = ChatType == ChatType.GROUP ? StreamKeyBuilder.Group(targetId) : StreamKeyBuilder.Private(userId, targetId);
             AddDomainEvent(new ConversationCreatedDomainEvent(this));
         }
@@ -61,18 +62,32 @@ namespace MessageService.Domain.Entities
             if (LastReadSequenceId != null)
             {
                 LastReadSequenceId = LastReadSequenceId.Value;
+                this.NotifyModified();
             }
             if (unreadCount != null)
             {
                 UnreadCount += unreadCount.Value;
+                NotifyModified();
             }
 
             if (lastMsg != null)
             {
                 LastMessage = lastMsg;
+                NotifyModified();
             }
         }
 
+
+        /// <summary>
+        /// 标记会话已读（清零未读数，更新最后已读消息序列号）
+        /// </summary>
+        public void MarkAsRead(long? lastReadSequenceId)
+        {
+            UnreadCount = 0;
+            if (lastReadSequenceId.HasValue)
+                LastReadSequenceId = lastReadSequenceId.Value;
+        }
+
         public void UpdateProfile(string name, string avatar)
         {
             TargetAvatar = avatar;