大功告成

services/llm.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import logging
+import os
 from typing import Optional
 from collections import deque
 
@@ -15,23 +16,37 @@ class LLMService:
         self._error: Optional[str] = None
         self._client = None
         self._model = (settings.llm_model or "").strip()
+        self._base_url = (settings.llm_base_url or "").strip()
         self._history: deque[dict] = deque(maxlen=12)  # 6 turns (user+assistant)
         self._system_prompt = "请用中文口语化简短回复，1-2句。"
 
         if not settings.llm_api_key:
+            self._error = "missing LLM api key: set LLM_API_KEY or DEEPSEEK_API_KEY"
             return
+
+        # If DeepSeek key is provided but no explicit base URL override,
+        # route to DeepSeek-compatible OpenAI endpoint by default.
+        if (
+            os.getenv("DEEPSEEK_API_KEY")
+            and not os.getenv("LLM_BASE_URL")
+            and not os.getenv("DEEPSEEK_BASE_URL")
+            and (self._base_url.lower() == "https://api.openai.com/v1" or not self._base_url)
+        ):
+            self._base_url = "https://api.deepseek.com/v1"
+
         if not self._model:
-            base = (settings.llm_base_url or "").lower()
-            self._model = "deepseek-chat" if "deepseek.com" in base else "gpt-4o-mini"
+            base = self._base_url.lower()
+            self._model = "deepseek-chat" if "deepseek" in base else "gpt-4o-mini"
         try:
             from openai import AsyncOpenAI
 
             self._client = AsyncOpenAI(
                 api_key=settings.llm_api_key,
-                base_url=settings.llm_base_url,
+                base_url=self._base_url,
                 timeout=settings.llm_timeout,
             )
             self._ready = True
+            self._error = None
         except Exception as exc:  # pragma: no cover
             self._error = str(exc)
             logger.warning("LLM online mode unavailable: %s", exc)
@@ -67,6 +82,7 @@ class LLMService:
         return {
             "ready": self._ready,
             "model": self._model,
+            "base_url": self._base_url,
             "history_items": len(self._history),
             "error": self._error,
         }