# File: backend/app/main.py (确认 load_dotenv 调用位置)
# Description: FastAPI 应用入口

from fastapi import FastAPI
from starlette.middleware.cors import CORSMiddleware
from app.api.v1.api import api_router as api_router_v1
# 确保在创建 FastAPI 实例之前加载环境变量
from app.core.config import OPENAI_API_KEY # 导入会触发 load_dotenv

# 创建 FastAPI 应用实例
app = FastAPI(title="CherryAI Backend", version="0.1.0")

# --- 配置 CORS ---
origins = [
    "http://localhost:3000",
    "http://127.0.0.1:3000",
]
app.add_middleware(
    CORSMiddleware,
    allow_origins=origins,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

# --- 挂载 API 路由 ---
app.include_router(api_router_v1, prefix="/api/v1")

# --- 根路径 ---
@app.get("/", tags=["Root"])
async def read_root():
  return {"message": "欢迎来到 CherryAI 后端！"}