<?php
header('Content-Type: application/json');
require_once dirname(__DIR__) . '/include/scheduler.php';

$id          = trim($_POST['id']      ?? '');
$enabled     = (bool)($_POST['enabled'] ?? false);
$cron        = trim($_POST['cron']    ?? '');
$log_enabled = ($_POST['log_enabled'] ?? '0') === '1';

if (!$id) {
    echo json_encode(['ok' => false, 'error' => 'Missing id']);
    exit;
}

// Basic cron validation — 5 fields, or known @event trigger, or empty
if ($cron && !in_array($cron, ['@array_start', '@array_stop'], true)
         && !preg_match('/^(\S+\s+){4}\S+$/', $cron)) {
    echo json_encode(['ok' => false, 'error' => 'Invalid cron expression']);
    exit;
}

$ok = vv_schedule_update($id, $enabled, $cron, $log_enabled);
echo json_encode(['ok' => $ok, 'error' => $ok ? null : 'Failed to write schedule']);