<?php
// Save rsync standalone config (location + cron) for a specific rsync tier.
// POST: flag_name (e.g. "DAILY_RSYNC_ENABLED"), orch_id, location, cron
// Stored in schedule.json under "__rsync_{FLAG_NAME}".
// Triggers a cron rebuild so the standalone entry takes effect immediately.
header('Content-Type: application/json');
require_once dirname(__DIR__) . '/include/config.php';
require_once dirname(__DIR__) . '/include/scheduler.php';

if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
    echo json_encode(['ok' => false, 'error' => 'POST only']);
    exit;
}

$flagName = trim($_POST['flag_name'] ?? '');
$orchId   = trim($_POST['orch_id']   ?? '');
$location = trim($_POST['location']  ?? '');
$cron     = trim($_POST['cron']      ?? '');

if (!$flagName || !preg_match('/^[A-Z_]+_RSYNC_ENABLED$/', $flagName)) {
    echo json_encode(['ok' => false, 'error' => 'Invalid flag_name']);
    exit;
}
if ($orchId && (str_contains($orchId, '..') || !preg_match('/^[A-Za-z0-9_.\-\/]+\.sh$/', $orchId))) {
    echo json_encode(['ok' => false, 'error' => 'Invalid orch_id']);
    exit;
}
if ($location && (!str_starts_with($location, '/') || str_contains($location, '..') || preg_match('/[\x00\n\r]/', $location))) {
    echo json_encode(['ok' => false, 'error' => 'Invalid location']);
    exit;
}

$key      = '__rsync_' . $flagName;
$schedule = vv_schedule_load();
$schedule[$key] = [
    'flag_name' => $flagName,
    'orch_id'   => $orchId,
    'location'  => $location,
    'cron'      => $cron,
];
if (!vv_schedule_save($schedule)) {
    echo json_encode(['ok' => false, 'error' => 'Write failed']);
    exit;
}

vv_cron_rebuild($schedule);
echo json_encode(['ok' => true]);