import time
import os
import tempfile
import psutil


PID_FILE = os.path.join(tempfile.gettempdir(), "catfish.pid")


def is_running():
    return os.path.exists(PID_FILE)


def get_running_process() -> psutil.Process:
    assert is_running()
    with open(PID_FILE) as f:
        return psutil.Process(int(f.read()))


def main():
    while True:
        time.sleep(1)