first commit

backend/app/llm/factory.py

@@ -0,0 +1,22 @@
+from .dashscope import DashScopeClient
+from .openai import OpenAIClient
+from .anthropic import AnthropicClient
+
+
+class LLMFactory:
+    _clients = {
+        "dashscope": DashScopeClient,
+        "openai": OpenAIClient,
+        "anthropic": AnthropicClient,
+    }
+
+    @classmethod
+    def create_client(cls, provider, config):
+        client_class = cls._clients.get(provider)
+        if not client_class:
+            raise ValueError(f"不支持的 LLM 提供商: {provider}")
+        return client_class(config)
+
+    @classmethod
+    def register_client(cls, provider, client_class):
+        cls._clients[provider] = client_class