# -*- coding: utf-8 -*-
import configparser
import re
import subprocess
import time

import pytest
import requests

def pytest_addoption(parser):
    parser.addoption(
        '--tunnel', action="store", type="choice", choices=['ngrok', 'localtunnel'], default='ngrok',
        help="Which tunneling method to use to expose the local Odoo server "
             "to hook up github's webhook. ngrok is more reliable, but "
             "creating a free account is necessary to avoid rate-limiting "
             "issues (anonymous limiting is rate-limited at 20 incoming "
             "queries per minute, free is 40, multi-repo batching tests will "
             "blow through the former); localtunnel has no rate-limiting but "
             "the servers are way less reliable")

@pytest.fixture(scope="session")
def config(pytestconfig):
    """ Flat version of the pytest config file (pytest.ini), parses to a
    simple dict of {section: {key: value}}

    """
    conf = configparser.ConfigParser(interpolation=None)
    conf.read([pytestconfig.inifile])
    return {
        name: dict(s.items())
        for name, s in conf.items()
    }

@pytest.fixture(scope='session')
def rolemap(config):
    # only fetch github logins once per session
    rolemap = {}
    for k, data in config.items():
        if k.startswith('role_'):
            role = k[5:]
        elif k == 'github':
            role = 'user'
        else:
            continue

        r = requests.get('https://api.github.com/user', headers={'Authorization': 'token %s' % data['token']})
        r.raise_for_status()

        rolemap[role] = data['user'] = r.json()['login']
    return rolemap

# apparently conftests can override one another's fixtures but plugins can't
# override conftest fixtures (?) so if this is defined as "users" it replaces
# the one from runbot_merge/tests/local and everything breaks.
#
# Alternatively this could be special-cased using remote_p or something but
# that's even more gross. It might be possible to handle that via pytest's
# hooks as well but I didn't check
@pytest.fixture
def users_(env, config, rolemap):
    for role, login in rolemap.items():
        if role in ('user', 'other'):
            continue

        env['res.partner'].create({
            'name': config['role_' + role].get('name', login),
            'github_login': login,
            'reviewer': role == 'reviewer',
            'self_reviewer': role == 'self_reviewer',
        })

    return rolemap

@pytest.fixture(scope='session')
def tunnel(pytestconfig, port):
    """ Creates a tunnel to localhost:<port> using ngrok or localtunnel, should yield the
    publicly routable address & terminate the process at the end of the session
    """

    tunnel = pytestconfig.getoption('--tunnel')
    if tunnel == 'ngrok':
        p = subprocess.Popen(['ngrok', 'http', '--region', 'eu', str(port)], stdout=subprocess.DEVNULL)
        time.sleep(5)
        try:
            r = requests.get('http://localhost:4040/api/tunnels')
            r.raise_for_status()
            yield next(
                t['public_url']
                for t in r.json()['tunnels']
                if t['proto'] == 'https'
            )
        finally:
            p.terminate()
            p.wait(30)
    elif tunnel == 'localtunnel':
        p = subprocess.Popen(['lt', '-p', str(port)], stdout=subprocess.PIPE)
        try:
            r = p.stdout.readline()
            m = re.match(br'your url is: (https://.*\.localtunnel\.me)', r)
            assert m, "could not get the localtunnel URL"
            yield m.group(1).decode('ascii')
        finally:
            p.terminate()
            p.wait(30)
    else:
        raise ValueError("Unsupported %s tunnel method" % tunnel)