def account_info(remote, resp):
    """Retrieve remote account information used to find local user.

    It returns a dictionary with the following structure:

    .. code-block:: python

        {
            'user': {
                'email': '...',
                'profile': {
                    'username': '...',
                    'full_name': '...',
                }
            },
            'external_id': 'github-unique-identifier',
            'external_method': 'github',
        }

    Information inside the user dictionary are available for other modules.
    For example, they are used from the module invenio-userprofiles to fill
    the user profile.

    :param remote: The remote application.
    :param resp: The response.
    :returns: A dictionary with the user information.
    """
    gh = github3.login(token=resp['access_token'])
    me = gh.me()
    return dict(
        user=dict(
            email=_extract_email(gh),
            profile=dict(
                username=me.login,
                full_name=me.name,
            ),
        ),
        external_id=str(me.id),
        external_method='github'
    )