"""
main.py
报告生成独立服务 FastAPI 入口。

启动方式：
    uvicorn main:app --reload
    或：python main.py
"""

import logging
from contextlib import asynccontextmanager

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

from config import settings
from database import engine, init_database
from log import configure_logging
from routers import report

configure_logging()
_log = logging.getLogger(__name__)


@asynccontextmanager
async def lifespan(app: FastAPI):
    """应用启动与关闭时执行。"""
    init_database()
    yield
    engine.dispose()


app = FastAPI(
    lifespan=lifespan,
    title=settings.APP_TITLE,
    version=settings.APP_VERSION,
    description=settings.APP_DESCRIPTION,
    docs_url="/docs",
    redoc_url="/redoc",
)

app.add_middleware(
    CORSMiddleware,
    allow_origins=settings.CORS_ORIGINS,
    allow_credentials=True,
    allow_methods=["*"],
    allow_headers=["*"],
)

app.include_router(report.router, prefix="/api/v1")


@app.get("/health", tags=["系统"], summary="健康检查")
def health_check():
    """确认服务存活，返回版本信息。"""
    return {"status": "ok", "version": settings.APP_VERSION}


if __name__ == "__main__":
    uvicorn.run(
        "main:app",
        host=settings.HOST,
        port=settings.PORT,
        reload=settings.RELOAD,
    )