add fastapi init

chat/main.py

@@ -0,0 +1,26 @@
+from fastapi import FastAPI
+from api.v1 import ai_chat
+from fastapi.middleware.cors import CORSMiddleware
+
+app = FastAPI()
+
+origins = [
+    "http://localhost",
+    "http://localhost:8010",
+]
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=origins,
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+# 注册路由
+app.include_router(ai_chat.router, prefix="/chat/api/v1", tags=["chat"])
+
+# 健康检查
+@app.get("/ping")
+def ping():
+    return {"msg": "pong"}