from flask import Blueprint, request, redirect, flash
from auth import require_level
from config_utils import load_core, save_core, verify_core_hash

bp = Blueprint('action_apply_ddns_ip_check', __name__)

VIEW = '/view/view_ddns'


@bp.route('/action/ddns_ip_check_save', methods=['POST'])
@require_level('administrator')
def ddns_ip_check_save():
    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)

    http_services = [u.strip() for u in request.form.getlist('http_services') if u.strip()]
    dig_services  = [u.strip() for u in request.form.getlist('dig_services')  if u.strip()]

    if not http_services and not dig_services:
        flash('At least one IP check service is required.', 'error')
        return redirect(VIEW)

    services  = [{'type': 'http', 'url': u} for u in http_services]
    services += [{'type': 'dig',  'url': u} for u in dig_services]

    core = load_core()
    core.setdefault('ddns', {})['ip_check_services'] = services
    save_core(core)
    flash('IP check services saved.', 'success')
    return redirect(VIEW)