defaults = {
    'apt': {
        'packages': {
            'vnstat': {},
            'vnstati': {},
        },
    },
    'icinga2_api': {
        'vnstat': {
            'services': {
                'VNSTATD PROCESS': {
                    'command_on_monitored_host': '/usr/lib/nagios/plugins/check_procs -C vnstatd -c 1:',
                },
            },
        },
    },
    'vnstat': {
        'bandwidth': '1000',
    },
}


@metadata_reactor.provides(
    'vnstat/interface',
)
def get_default_interface(metadata):
    interfaces = sorted(metadata.get('interfaces', {}).keys())

    if interfaces:
        return {
            'vnstat': {
                'interface': interfaces[0],
            },
        }

    return {}


@metadata_reactor.provides(
    'cron',
    'nginx/vhosts/vnstat',
)
def nginx_dashboard(metadata):
    if not node.has_bundle('nginx'):
        raise DoNotRunAgain

    if not metadata.get('vnstat/generate-web-dashboard', False):
        return {}

    return {
        'cron': {
            'vnstat_yesterday_graph': '0 0 * * *    root    /usr/bin/vnstati --output "/var/www/vnstat/yesterday.png" --hours > /dev/null 2>/dev/null',
            'vnstat_generate_web_dashboard': '*/10 * * * *    root    /usr/local/bin/generate-vnstati /var/www/vnstat > /dev/null 2>/dev/null',
        },
        'nginx': {
            'vhosts': {
                'vnstat': {},
            },
        },
    }