defaults = {
    'apt': {
        'repos': {
            'nginx': {
                'items': [
                    'deb http://nginx.org/packages/{os} {os_release} nginx',
                ],
            },
        },
        'packages': {
            'nginx': {},
        },
    },
    'nginx': {
        'worker_connections': 768,
        'use_ssl_for_all_connections': True,
    },
}


@metadata_reactor
def worker_processes(metadata):
    return {
        'nginx': {
            'worker_processes': metadata.get('vm/cpu', 2),
        },
    }


@metadata_reactor
def letsencrypt(metadata):
    if not node.has_bundle('letsencrypt'):
        raise DoNotRunAgain

    domains = {}

    for vhost, config in metadata.get('nginx/vhosts', {}).items():
        domain = config.get('domain', vhost)
        domains[domain] = set()

    return {
        'letsencrypt': {
            'domains': domains,
            'reload_after': {
                'nginx',
            },
        },
    }