import subprocess

import configparser

import re

import json

import requests

from ast import literal_eval

IP_REGEX = re.compile((r'^(OutboundBindAddress)'

                       r' (\d{1,3}\.\d{1,3}\.\d{1,3}.\d{1,3})'))

def read_tor_config(configfile="/etc/tor/torrc"):

    with open(configfile) as fb:

        lines = {line[:-1] for line in fb if not line.startswith('#')}

    lines = {line for line in filter(None, lines)}

    return lines

def get_tor_status(name='tor'):

    try:

        pids = subprocess.check_output(['pidof', 'tor']).decode('utf-8')

        pids = pids.split(' ')

        pid_file = '.'.join([name, 'pid'])

        pid = open('/'.join(['var', 'run', name, pid_file])).readline()

        if pid in pids:

            return "Online"

        else:

            return "Offline"

    except subprocess.CalledProcessError:

        return "Offline"

def get_tor_fingerprint(name='tor'):

    fingerprint_file = '/'.join(['var', 'lib', name, 'fingerprint'])

    with open(fingerprint_file) as fb:

        line = fb.readline()[:-1]

    hostname, fingerprint = line.split(' ')

    return hostname, fingerprint

def get_server_type(tor_config):

    if 'BridgeRelay 1' in tor_config:

        if any(OBFS_REGEX.match(i) for i in tor_config):

            return 'Bridge', 'True'

        else:

            return 'Bridge', 'False'

def get_ip(tor_config):

    for i in tor_config:

        match = IP_REGEX.match(i)

        if match:

            return i.groups()[1]

        else:

            return None

def get_config():

    config = configparser.ConfigParser()

    config.read('/etc/ennstatus_updater.conf')

    return config

def create_server_json(tor_configfile='/etc/tor/torrc', name='tor'):

    tor_config = read_tor_config(tor_configfile)

    server_type, obfs = get_server_type(tor_config)

    hostname, fingerprint = get_tor_fingerprint(name)

    tor_status = get_tor_status(name)

    ip = get_ip(tor_config)

    dictionary = {'server_type': server_type, 'server_name': hostname,

                  'tor_status': tor_status}

    if ip is not None:

        dictionary['ip'] = ip

    if obfs is not None:

        dictionary['obfs'] = obfs

    if server_type != 'Bridge':

        dictionary['fingerprint'] = fingerprint

    return json.dumps(dictionary)

def update_server(server_json, url):

    response = requests.post(url + '/api/update', data=server_json)

    return response.text

def main():

    config = get_config()

    ennstatus_url = config['main']['ennstatus_url']

            response = update_server(server_json, ennstatus_url)

    print(response)