Fix Telegram agent image download path

app/modules/telegram/telegram.py

@@ -205,10 +205,27 @@ class Telegram:
             return None
         try:
             file_info = self._bot.get_file(file_id)
-            file_url = f"https://api.telegram.org/file/bot{self._telegram_token}/{file_info.file_path}"
-            resp = RequestUtils(timeout=30).get_res(file_url)
+            file_url = apihelper.FILE_URL.format(
+                self._telegram_token, file_info.file_path
+            )
+            resp = RequestUtils(
+                proxies=apihelper.proxy, timeout=30
+            ).get_res(file_url)
             if resp and resp.content:
+                logger.info(
+                    "Telegram图片下载成功: file_id=%s, file_path=%s, content_bytes=%s",
+                    file_id,
+                    file_info.file_path,
+                    len(resp.content),
+                )
                 return resp.content
+            logger.warn(
+                "Telegram图片下载失败: file_id=%s, file_path=%s, file_url=%s, proxy_enabled=%s",
+                file_id,
+                getattr(file_info, "file_path", None),
+                file_url,
+                bool(apihelper.proxy),
+            )
         except Exception as e:
             logger.error(f"下载Telegram文件失败: {e}")
         return None

tests/test_agent_image_support.py

@@ -4,6 +4,8 @@ import unittest
 from types import SimpleNamespace
 from unittest.mock import Mock, patch
 
+from telebot import apihelper
+
 from app.agent.tools.impl.send_message import SendMessageInput
 from app.chain.message import MessageChain
 from app.core.config import settings
@@ -73,6 +75,32 @@ class AgentImageSupportTest(unittest.TestCase):
             {"text": "hi", "photo": [{"file_id": "image-1"}]},
         )
 
+    def test_telegram_download_file_uses_configured_file_url(self):
+        telegram = Telegram.__new__(Telegram)
+        telegram._bot = Mock()
+        telegram._telegram_token = "token-123"
+        telegram._bot.get_file.return_value = SimpleNamespace(file_path="photos/a.jpg")
+
+        old_file_url = apihelper.FILE_URL
+        old_proxy = apihelper.proxy
+        apihelper.FILE_URL = "https://tg-proxy.example/file/bot{0}/{1}"
+        apihelper.proxy = {"https": "http://127.0.0.1:7890"}
+
+        try:
+            with patch(
+                "app.modules.telegram.telegram.RequestUtils.get_res",
+                return_value=SimpleNamespace(content=b"image-bytes"),
+            ) as get_res:
+                content = telegram.download_file("file-id-1")
+        finally:
+            apihelper.FILE_URL = old_file_url
+            apihelper.proxy = old_proxy
+
+        self.assertEqual(content, b"image-bytes")
+        get_res.assert_called_once_with(
+            "https://tg-proxy.example/file/bottoken-123/photos/a.jpg"
+        )
+
     def test_process_allows_image_only_message(self):
         chain = MessageChain()
         message = CommingMessage(