"""Boot-time reconciliation of crash-prone PineAP settings."""
from server import (_apply_uci_wanted, _monitor_down, _raise_monitors,
                    PINEAPD_SAFE_UCI, device_run)

WANTED_EXTRA = {'pineapd.@pineapd[0].autossidpool': '0'}
POOL_CLEAR_MAX = 20
MONITORS = ('wlan0mon', 'wlan1mon')


def _pool_size():
    rc, out, err = device_run(
        ['uci', 'get', 'pineapd.@ssidpool[0].ssid'])
    if rc != 0 or not (out or '').strip():
        return 0
    return len([s for s in out.strip().split('\n') if s])


def reconcile(clear_pool=True):
    changed = _apply_uci_wanted(dict(PINEAPD_SAFE_UCI, **WANTED_EXTRA))
    pool_cleared = False
    if clear_pool and _pool_size() > POOL_CLEAR_MAX:
        device_run(['uci', 'delete', 'pineapd.@ssidpool[0].ssid'])
        pool_cleared = True
    if changed or pool_cleared:
        device_run(['uci', 'commit', 'pineapd'])
    raised = _raise_monitors() if any(_monitor_down(m) for m in MONITORS) else []
    return {'changed': changed, 'pool_cleared': pool_cleared,
            'monitors_raised': raised}


def guard_report():
    from server import _pending_uci
    pending = _pending_uci(dict(PINEAPD_SAFE_UCI, **WANTED_EXTRA))
    return {'in_sync': not pending, 'pending': pending,
            'pool_size': _pool_size()}