Add NC Connector timer status helper

include/nc_connector_system.inc.php

@@ -0,0 +1,62 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_nc_connector_systemctl_value(array $args)
+{
+  if (!function_exists('proc_open'))
+  {
+    return '';
+  }
+
+  $command = array_merge(array('/usr/bin/systemctl'), $args);
+  $spec = array(
+    0 => array('file', '/dev/null', 'r'),
+    1 => array('pipe', 'w'),
+    2 => array('pipe', 'w'),
+  );
+  $process = @proc_open($command, $spec, $pipes);
+  if (!is_resource($process))
+  {
+    return '';
+  }
+  $stdout = stream_get_contents($pipes[1]);
+  stream_get_contents($pipes[2]);
+  fclose($pipes[1]);
+  fclose($pipes[2]);
+  $exit = proc_close($process);
+  return $exit === 0 ? trim((string)$stdout) : '';
+}
+
+function bratonien_tools_nc_connector_system_status()
+{
+  $timer = 'bratonien-nc-connector.timer';
+  $next_raw = bratonien_tools_nc_connector_systemctl_value(array('show', $timer, '--property=NextElapseUSecRealtime', '--value'));
+  $next_timestamp = 0;
+  if ($next_raw !== '' && strtolower($next_raw) !== 'n/a')
+  {
+    $parsed = strtotime($next_raw);
+    if ($parsed !== false)
+    {
+      $next_timestamp = (int)$parsed;
+    }
+  }
+
+  $active = bratonien_tools_nc_connector_systemctl_value(array('is-active', $timer));
+  $enabled = bratonien_tools_nc_connector_systemctl_value(array('is-enabled', $timer));
+
+  return array(
+    'timer_name' => $timer,
+    'timer_active' => $active === 'active',
+    'timer_enabled' => $enabled === 'enabled',
+    'next_run_raw' => $next_raw,
+    'next_run_timestamp' => $next_timestamp,
+    'next_run_label' => $next_timestamp > 0 ? date('d.m.Y H:i:s', $next_timestamp) : ($next_raw !== '' ? $next_raw : 'Nicht verfügbar'),
+    'legacy_runtime_exists' => is_dir('/opt/piwigo-sync'),
+    'legacy_config_exists' => is_dir('/etc/piwigo-sync'),
+    'legacy_service_exists' => is_file('/etc/systemd/system/piwigo-sync.service'),
+    'legacy_timer_exists' => is_file('/etc/systemd/system/piwigo-sync.timer'),
+  );
+}