增加代码知识库；修复文档处理内容；增加API设置

rag-web-ui/backend/app/services/llm/llm_factory.py

@@ -11,42 +11,51 @@ class LLMFactory:
         provider: Optional[str] = None,
         temperature: float = 0,
         streaming: bool = True,
+        model_profile: Optional[object] = None,
     ) -> BaseChatModel:
         """
         Create a LLM instance based on the provider
         """
-        # If no provider specified, use the one from settings
-        provider = provider or settings.CHAT_PROVIDER
+        if model_profile is not None:
+            provider = (provider or getattr(model_profile, "provider", None) or "dashscope").lower()
+            model = getattr(model_profile, "chat_model", None) or _default_chat_model(provider)
+            api_key = getattr(model_profile, "api_key", "") or ""
+            api_base = getattr(model_profile, "api_base", None) or _default_api_base(provider)
+        else:
+            provider = provider or settings.CHAT_PROVIDER
+            model = _default_chat_model(provider)
+            api_key = _default_api_key(provider)
+            api_base = _default_api_base(provider)
 
         if provider.lower() == "openai":
             return ChatOpenAI(
                 temperature=temperature,
                 streaming=streaming,
-                model=settings.OPENAI_MODEL,
-                openai_api_key=settings.OPENAI_API_KEY,
-                openai_api_base=settings.OPENAI_API_BASE
+                model=model,
+                openai_api_key=api_key,
+                openai_api_base=api_base
             )
         elif provider.lower() == "deepseek":
             return ChatDeepSeek(
                 temperature=temperature,
                 streaming=streaming,
-                model=settings.DEEPSEEK_MODEL,
-                api_key=settings.DEEPSEEK_API_KEY,
-                api_base=settings.DEEPSEEK_API_BASE
+                model=model,
+                api_key=api_key,
+                api_base=api_base
             )
-        elif provider.lower() == "dashscope":
+        elif provider.lower() in {"dashscope", "openai_compatible"}:
             return ChatOpenAI(
                 temperature=temperature,
                 streaming=streaming,
-                model=settings.DASH_SCOPE_CHAT_MODEL,
-                openai_api_key=settings.DASH_SCOPE_API_KEY,
-                openai_api_base=settings.DASH_SCOPE_API_BASE,
+                model=model,
+                openai_api_key=api_key,
+                openai_api_base=api_base,
             )
         elif provider.lower() == "ollama":
             # Initialize Ollama model
             return OllamaLLM(
-                model=settings.OLLAMA_MODEL,
-                base_url=settings.OLLAMA_API_BASE,
+                model=model,
+                base_url=api_base,
                 temperature=temperature,
                 streaming=streaming
             )
@@ -54,4 +63,41 @@ class LLMFactory:
         # elif provider.lower() == "anthropic":
         #     return ChatAnthropic(...)
         else:
-            raise ValueError(f"Unsupported LLM provider: {provider}")
+            raise ValueError(f"Unsupported LLM provider: {provider}")
+
+
+def _default_chat_model(provider: Optional[str]) -> str:
+    provider = (provider or settings.CHAT_PROVIDER).lower()
+    if provider == "openai":
+        return settings.OPENAI_MODEL
+    if provider == "deepseek":
+        return settings.DEEPSEEK_MODEL
+    if provider == "dashscope":
+        return settings.DASH_SCOPE_CHAT_MODEL
+    if provider == "ollama":
+        return settings.OLLAMA_MODEL
+    return settings.DASH_SCOPE_CHAT_MODEL or settings.OPENAI_MODEL
+
+
+def _default_api_key(provider: Optional[str]) -> str:
+    provider = (provider or settings.CHAT_PROVIDER).lower()
+    if provider == "openai":
+        return settings.OPENAI_API_KEY
+    if provider == "deepseek":
+        return settings.DEEPSEEK_API_KEY
+    if provider == "dashscope":
+        return settings.DASH_SCOPE_API_KEY
+    return settings.API_KEY
+
+
+def _default_api_base(provider: Optional[str]) -> str:
+    provider = (provider or settings.CHAT_PROVIDER).lower()
+    if provider == "openai":
+        return settings.OPENAI_API_BASE
+    if provider == "deepseek":
+        return settings.DEEPSEEK_API_BASE
+    if provider == "dashscope":
+        return settings.DASH_SCOPE_API_BASE
+    if provider == "ollama":
+        return settings.OLLAMA_API_BASE
+    return settings.DASH_SCOPE_API_BASE