#!/usr/bin/env python3
"""Wrapper for xmpp_agent_core.py --agent zhiwei"""
import sys, os, signal

PID_FILE = "/tmp/xmpp_zhiwei_bot.pid"

if os.path.exists(PID_FILE):
    with open(PID_FILE) as f:
        try:
            old_pid = int(f.read().strip())
            os.kill(old_pid, 0)
            print(f"xmpp_zhiwei_bot already running (PID {old_pid}), exiting.")
            sys.exit(0)
        except (ValueError, ProcessLookupError):
            pass

with open(PID_FILE, "w") as f:
    f.write(str(os.getpid()))

sys.argv = [sys.argv[0], '--agent', 'zhiwei']
try:
    exec(open(os.path.join(os.path.dirname(__file__), 'xmpp_agent_core.py')).read())
finally:
    if os.path.exists(PID_FILE):
        os.remove(PID_FILE)