import argparse
import asyncio
import signal
import uvicorn
import sys
from api import *
import uvicorn
import configparser, json
SHUTDOWN_TIMEOUT = 10
# ===============默认数据配置=====================
config = configparser.ConfigParser()
config_name = "config.ini"
config.read(config_name)
# argparse
parser = argparse.ArgumentParser(description="Process some integers.")
parser.add_argument("--port", type=int, default=7074, help="The port number.")
args = parser.parse_args()
server = uvicorn.Server(uvicorn.Config(app))

# 通过信号来退出服务，否则会出现终端显示退出后，实际进程仍在运行
# 定义信号处理函数
def signal_handler(sig, frame):
    print("[python] [flask] Received signal to terminate the server:", sig)
    sys.exit(0)


@app.on_event("shutdown")
async def shutdown():
    server.should_exit = True
    await asyncio.sleep(3)


async def force_shutdown():
    await asyncio.sleep(SHUTDOWN_TIMEOUT)
    if not server.should_exit:
        server.force_exit = True


if __name__ == "__main__":
    # 以api方式启动服务会出现警告，请忽略
    # app.run(port=args.port,use_reloader=True)
    host = config.get("app", "host")
    port = config.get("app", "port")
    debug = config.get("app", "debug")
    server.install_signal_handlers()
    asyncio.ensure_future(force_shutdown())
    uvicorn.run(
        app="main:app",
        host=host,
        port=int(port),
        reload=bool(debug),
    )
    # 注册信号处理函数
    # 或许flask内置的stdio与node.js stdio有冲突，导致控制台无法显示信息。
    # 如果想要查看控制台输出，请单独启动服务 npm run dev-python
    print("python server is running at port:", port)