from flask import Blueprint, request, redirect, flash
from auth import require_level
from config_utils import load_core, save_core, verify_core_hash, queued_msg
import sanitize
import validation as validate

bp = Blueprint('action_apply_mdns', __name__)



@bp.route('/action/apply_mdns', methods=['POST'])
@require_level('administrator')
def apply_mdns():
    mdns_enabled      = 'mdns_enabled' in request.form

    if not verify_core_hash(request.form.get('config_hash', '')):
        flash('Configuration was modified by another session. Please refresh and try again.', 'error')
        return redirect('/view/view_mdns')

    core = load_core()
    mdns_reflect_vlans = sanitize.filterlist(request.form.getlist('mdns_reflect_vlans'),
                                             {v.get('name') for v in core.get('vlans', [])})
    core.setdefault('mdns_reflection', {}).update({
        'enabled':       mdns_enabled,
        'reflect_vlans': mdns_reflect_vlans,
    })
    errors = validate.validate_config(core)
    if errors:
        for msg in errors:
            flash(msg, 'error')
        return redirect('/view/view_mdns')
    save_core(core)

    flash(queued_msg('core apply'), 'success')
    return redirect('/view/view_mdns')