""" monitor

Monitor weechat sessions running and their relay availability """

import re
import subprocess
from flask import Flask, request
import settings

LOGGER_NAME = __name__

app = Flask(__name__)


@app.route('/health', methods=['GET'])
def home_view():
    # We check whether weechat is running
    url_regex = re.compile(
        r'(?:https?://)?([^/:]*){}(?::[0-9]+)?/?'.format(
            settings.URL_SUFFIX))
    find_res = url_regex.match(request.base_url)
    if find_res is None:
        return 'Badly formed url\n', 400
    user = find_res.group(1)

    try:
        output = subprocess.check_output(
            ['ps', '-u', user, '--format=cmd']).decode('utf-8')
        lines = output.strip().split('\n')[1:]
        for line in lines:
            if line.strip() == settings.PS_COMMAND:
                return 'OK\n', 200
    except subprocess.CalledProcessError:
        pass
    return 'Weechat not running\n', 406


@app.before_first_request  # FIXME this should be run on startup...
def startup_actions():
    pass  # Nothing needed for now