from contextlib import asynccontextmanager
from datetime import datetime, timedelta

from apscheduler.schedulers.asyncio import AsyncIOScheduler
from fastapi import FastAPI

from app.client.embedding_client_manager import embedding_client
from app.client.milvus_client_manager import milvus_client
from app.client.mysql_client_manager import db_assistant_mysql_client_manager
from app.core.log import logger
from app.summary.service import build

"""
生命周期
容器启动时执行
yield
容器停止时执行
"""
scheduler = AsyncIOScheduler(timezone='Asia/Shanghai')

async def generate_daily_summary():
    yesterday = datetime.now() - timedelta(days=1)
    date = datetime(yesterday.year, yesterday.month, yesterday.day)
    # 按 年-月-日 无补零格式输出
    date_format = f"{date.year}-{date.month}-{date.day}"
    #date_format = "2026-06-23"
    await build(date_format)

    logger.info(f"{date_format} 消息摘要生成完成")

@asynccontextmanager
async def lifespan(app: FastAPI):
    db_assistant_mysql_client_manager.init()
    embedding_client.init()
    milvus_client.init()

    scheduler.add_job(
        generate_daily_summary,
        trigger='cron',
        hour=9,
        minute=40,
        second=0,
        id='daily_summary',
        name='每日消息摘要任务',
        replace_existing=True
    )
    scheduler.start()
    logger.info("定时任务调度器已开启")
    yield
    await db_assistant_mysql_client_manager.close()
    await embedding_client.close()
    milvus_client.close()
    scheduler.shutdown()
    logger.info("定时任务调度器已关闭")