import asyncio
import sys
import signal
from config.settings import load_config, check_config_file
from core.websocket_server import WebSocketServer
from core.utils.util import check_ffmpeg_installed
from core.utils.mysql_util import init_mysql_pool, close_mysql_pool

TAG = __name__


async def wait_for_exit():
    """Windows 和 Linux 兼容的退出监听"""
    loop = asyncio.get_running_loop()
    stop_event = asyncio.Event()

    if sys.platform == "win32":
        # Windows: 用 sys.stdin.read() 监听 Ctrl + C
        await loop.run_in_executor(None, sys.stdin.read)
    else:
        # Linux/macOS: 用 signal 监听 Ctrl + C
        def stop():
            stop_event.set()

        loop.add_signal_handler(signal.SIGINT, stop)
        loop.add_signal_handler(signal.SIGTERM, stop)  # 支持 kill 进程
        await stop_event.wait()


async def main():
    # 检查配置文件
    check_config_file()
    # 检查 ffmpeg 是否安装
    check_ffmpeg_installed()
    # 加载配置
    config = load_config()

    # 初始化 MySQL 连接池
    await init_mysql_pool()

    # 启动 WebSocket 服务器
    ws_server = WebSocketServer(config)
    ws_task = asyncio.create_task(ws_server.start())

    try:
        await wait_for_exit()  # 监听退出信号
    except asyncio.CancelledError:
        print("任务被取消，清理资源中...")
    finally:
        ws_task.cancel()
        try:
            await ws_task
        except asyncio.CancelledError:
            pass
        # 关闭 MySQL 连接池
        await close_mysql_pool()
        print("服务器已关闭，程序退出。")


if __name__ == "__main__":
    try:
        asyncio.run(main())
    except KeyboardInterrupt:
        print("手动中断，程序终止。")