from requests import get as requests_get, exceptions
import logging


def remote_branch_available(branch):
    if not branch:
        logging.error('No branch specified. Exiting.')
        return

    try:
        resp = requests_get(
            'https://api.github.com/repos/screenly/screenly-ose/branches',
            headers={
                'Accept': 'application/vnd.github.loki-preview+json',
            },
        )
    except exceptions.ConnectionError:
        logging.error('No internet connection.')
        return

    if not resp.ok:
        logging.error('Invalid response from Github: {}'.format(resp.content))
        return

    for github_branch in resp.json():
        if github_branch['name'] == branch:
            return True
    return False


def fetch_remote_hash(branch):
    if not branch:
        logging.error('No branch specified. Exiting.')
        return

    resp = requests_get(
        'https://api.github.com/repos/screenly/screenly-ose/git/refs/heads/{}'.format(branch)
    )

    if not resp.ok:
        logging.error('Invalid response from github: {}'.format(resp.content))
        return False

    logging.debug('Got response from Github: {}'.format(resp.status_code))
    latest_sha = resp.json()['object']['sha']
    return latest_sha