feat: improve system message display in dashboard

admin/dashboard/blueprints/messages.py

@@ -48,6 +48,40 @@ def _extract_emoji_preview_url(xml_text: str) -> str:
     return ''
 
 
+def _parse_sysmsg_payload(content: str) -> dict:
+    payload = {
+        "sysmsg_type": "",
+        "summary": "",
+        "replace_msg": "",
+        "session": "",
+        "msgid": "",
+        "newmsgid": "",
+    }
+    text = str(content or "").strip()
+    if not text.startswith("<sysmsg"):
+        return payload
+
+    try:
+        root = ET.fromstring(text)
+    except Exception:
+        payload["summary"] = text
+        return payload
+
+    payload["sysmsg_type"] = str(root.attrib.get("type", "")).strip()
+    if payload["sysmsg_type"] == "revokemsg":
+        revoke_node = root.find("revokemsg")
+        if revoke_node is not None:
+            payload["session"] = str(revoke_node.findtext("session", "") or "").strip()
+            payload["msgid"] = str(revoke_node.findtext("msgid", "") or "").strip()
+            payload["newmsgid"] = str(revoke_node.findtext("newmsgid", "") or "").strip()
+            payload["replace_msg"] = str(revoke_node.findtext("replacemsg", "") or "").strip()
+            payload["summary"] = payload["replace_msg"] or "撤回了一条消息"
+            return payload
+
+    payload["summary"] = str(root.findtext(".//content", "") or "").strip() or text
+    return payload
+
+
 def _proxy_remote_media(target_url: str) -> Response:
     if not target_url:
         return Response("missing url", status=400)
@@ -118,12 +152,25 @@ def get_messages():
 
         # 处理消息数据，添加群组名称和发送者昵称，并格式化引用消息
         for msg in result['messages']:
+            raw_content = str(msg.get('content') or '')
             # 获取群组名称
             msg['group_name'] = server.contact_manager.get_nickname(msg['group_id']) or msg['group_id']
 
             # 获取发送者昵称
             msg['sender_name'] = server.contact_manager.get_group_name(msg['group_id'], msg['sender']) or msg['sender']
 
+            if raw_content.startswith("<sysmsg"):
+                sysmsg_payload = _parse_sysmsg_payload(raw_content)
+                msg['content'] = sysmsg_payload.get('summary') or '[系统消息]'
+                msg['message_xml'] = raw_content
+                msg['sysmsg_type'] = sysmsg_payload.get('sysmsg_type', '')
+                msg['sysmsg_summary'] = sysmsg_payload.get('summary', '')
+                msg['sysmsg_replace_msg'] = sysmsg_payload.get('replace_msg', '')
+                msg['sysmsg_session'] = sysmsg_payload.get('session', '')
+                msg['sysmsg_msgid'] = sysmsg_payload.get('msgid', '')
+                msg['sysmsg_newmsgid'] = sysmsg_payload.get('newmsgid', '')
+                continue
+
             if _is_emoji_message(msg):
                 msg['content'] = '[表情]'
                 msg['emoji_preview_url'] = msg.get('image_path') or _extract_emoji_preview_url(msg.get('attachment_url', ''))