<?php
require_once __DIR__.'/../helpers/json.php';

// DB quick check
$db_ok = null;
try {
  require_once __DIR__.'/../db.php';
  $pdo = getPDO();
  $pdo->query('SELECT 1');
  $db_ok = true;
} catch (Throwable $e) {
  $db_ok = false;
}

// Rounded loadavg as STRINGS to avoid jq float parsing edge cases
$loadavg_raw = function_exists('sys_getloadavg') ? sys_getloadavg() : null;
$loadavg = null;
if (is_array($loadavg_raw)) {
  $loadavg = array_map(function($v){
    return number_format((float)$v, 2, '.', ''); // string "6.03"
  }, $loadavg_raw);
}

json_ok([
  'time' => gmdate('c'),
  'php_version' => PHP_VERSION,
  'memory_used_bytes' => memory_get_usage(true),
  'db' => $db_ok ? 'ok' : 'down',
  'system' => [
    'loadavg' => $loadavg,
    'uptime' => @trim(shell_exec('uptime')),
  ],
]);