#!/usr/bin/env python

from pathlib import Path
import subprocess
import sys
import yaml


def check_ping_reachable(ip):
    try:
        subprocess.check_call(['ping', '-c2', '-W1', ip],
                              stdout=subprocess.DEVNULL,
                              stderr=subprocess.DEVNULL)
        return True
    except subprocess.CalledProcessError:
        return False


def main():
    config = yaml.safe_load(open(Path('~/.config/i3-vpn.json').expanduser()))
    results = []

    for check in config['checks']:
        if check_ping_reachable(check['ip']):
            results.append(check['icon'])

    print(' '.join(results))


if __name__ == '__main__':
    sys.exit(main())