feat: preview emoji media in message list

admin/dashboard/blueprints/messages.py

@@ -1,4 +1,6 @@
 import requests
+import html
+import re
 from flask import Blueprint, render_template, jsonify, request, current_app, Response, stream_with_context
 from .auth import login_required
 from loguru import logger
@@ -31,6 +33,17 @@ def _is_usable_local_media_path(value: str) -> bool:
     return False
 
 
+def _extract_emoji_preview_url(xml_text: str) -> str:
+    if not xml_text:
+        return ''
+    patterns = (r'cdnurl="([^"]+)"', r'encrypturl="([^"]+)"', r'externurl="([^"]+)"')
+    for pattern in patterns:
+        match = re.search(pattern, xml_text)
+        if match:
+            return html.unescape(match.group(1))
+    return ''
+
+
 def _proxy_remote_media(target_url: str) -> Response:
     if not target_url:
         return Response("missing url", status=400)
@@ -109,6 +122,7 @@ def get_messages():
 
             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', ''))
                 continue
 
             # 处理消息内容，格式化引用消息