from contextlib import asynccontextmanager

from fastapi import FastAPI
from fastapi.middleware.cors import CORSMiddleware

from app.api.v1.router import api_router
from app.core.config import get_settings
from app.core.logging import configure_logging, setup_request_logging


@asynccontextmanager
async def _lifespan(app: FastAPI):
    # 启动算力状态轮询线程（同步派发到算力的训练任务状态/日志/指标）
    from app.modules.fine_tune.service import start_compute_sync_worker, stop_compute_sync_worker
    start_compute_sync_worker()
    yield
    stop_compute_sync_worker()


def create_app() -> FastAPI:
    settings = get_settings()
    configure_logging(settings)

    app = FastAPI(title=settings.app_name, lifespan=_lifespan)
    app.add_middleware(
        CORSMiddleware,
        allow_origins=settings.cors_allow_origins,
        allow_credentials=True,
        allow_methods=["*"],
        allow_headers=["*"],
    )
    setup_request_logging(app)
    app.include_router(api_router, prefix=settings.route_prefix)
    return app


app = create_app()