from json import loads
from os.path import join

defaults = {
    'users': {
        'root': {
            'home': '/root',
            'shell': '/bin/bash',
            'password': repo.vault.human_password_for('root on {}'.format(node.name)),
        },
    },
}


@metadata_reactor.provides(
    'users',
)
def add_users_from_json(metadata):
    with open(join(repo.path, 'users.json'), 'r') as f:
        json = loads(f.read())

    users = {}
    # First, add all admin users
    for uname, config in json.items():
        if config.get('is_admin', False):
            users[uname] = {
                'ssh_pubkey': set(config['ssh_pubkey']),
                'is_admin': True,
            }

    # Then, run again to get all 'to be deleted' users
    for uname, config in json.items():
        if uname not in metadata.get('users', {}):
            users.setdefault(uname, {
                'delete': True,
            })

    return {
        'users': users,
    }