Fix wecomcs open_kfid msgid (#2449)

* Update wecomcs.py

fix bug wecomcs send_message open_kfid
event.receiver_id  is open_kfid

* Update wecomcs.py

fix bug msgid exceeds the 32-byte limit

* test(wecomcs): cover bounded message IDs and images

---------

Co-authored-by: dadachann <185672915+dadachann@users.noreply.github.com>

src/langbot/libs/wecom_customer_service_api/api.py

@@ -295,6 +295,34 @@ class WecomCSClient:
                 raise Exception('Failed to send message')
             return data
 
+    @_bounded_token_retry
+    async def send_image_msg(self, open_kfid: str, external_userid: str, msgid: str, media_id: str):
+        if not await self.check_access_token():
+            self.access_token = await self.get_access_token(self.secret)
+
+        url = f'{self.base_url}/kf/send_msg?access_token={self.access_token}'
+        payload = {
+            'touser': external_userid,
+            'open_kfid': open_kfid,
+            'msgid': msgid,
+            'msgtype': 'image',
+            'image': {
+                'media_id': media_id,
+            },
+        }
+
+        async with self._http_client_context() as client:
+            response = await client.post(url, json=payload)
+
+            data = await httpclient.parse_json_response(response)
+            if data['errcode'] == 40014 or data['errcode'] == 42001:
+                self.access_token = await self.get_access_token(self.secret)
+                return await self.send_image_msg(open_kfid, external_userid, msgid, media_id)
+            if data['errcode'] != 0:
+                await self.logger.error(f'发送图片失败：{data}')
+                raise Exception('Failed to send image message')
+            return data
+
     async def handle_callback_request(self):
         """处理回调请求（独立端口模式，使用全局 request）。"""
         return await self._handle_callback_internal(request)

src/langbot/pkg/platform/sources/wecomcs.py

@@ -107,7 +107,7 @@ class WecomEventConverter(abstract_platform_adapter.AbstractEventConverter):
         if event.type == 'text':
             yiri_chain = await WecomMessageConverter.target2yiri(event.message, event.message_id)
             friend = platform_entities.Friend(
-                id=f'u{event.user_id}',
+                id=f'{event.receiver_id}|u{event.user_id}',
                 nickname=nickname,
                 remark='',
             )
@@ -117,7 +117,7 @@ class WecomEventConverter(abstract_platform_adapter.AbstractEventConverter):
             )
         elif event.type == 'image':
             friend = platform_entities.Friend(
-                id=f'u{event.user_id}',
+                id=f'{event.receiver_id}|u{event.user_id}',
                 nickname=nickname,
                 remark='',
             )
@@ -197,7 +197,7 @@ class WecomCSAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter):
 
         content_list = await WecomMessageConverter.yiri2target(message, self.bot)
         for content in content_list:
-            msgid = f'langbot_{uuid.uuid4().hex}'
+            msgid = f'{uuid.uuid4().hex}'
             if content['type'] == 'text':
                 await self.bot.send_text_msg(
                     open_kfid=open_kfid,
@@ -205,6 +205,13 @@ class WecomCSAdapter(abstract_platform_adapter.AbstractMessagePlatformAdapter):
                     msgid=msgid,
                     content=content['content'],
                 )
+            elif content['type'] == 'image':
+                await self.bot.send_image_msg(
+                    open_kfid=open_kfid,
+                    external_userid=external_userid,
+                    msgid=msgid,
+                    media_id=content['media_id'],
+                )
 
     def set_bot_uuid(self, bot_uuid: str):
         """设置 bot UUID（用于生成 webhook URL）"""