<?php
require_once __DIR__.'/../config.php';
require_once __DIR__.'/defaults.php';
function db(): PDO {
  static $pdo=null;
  if($pdo===null){
    try{
      $pdo=new PDO('mysql:host='.DB_HOST.';dbname='.DB_NAME.';charset=utf8mb4',DB_USER,DB_PASS,
        [PDO::ATTR_ERRMODE=>PDO::ERRMODE_EXCEPTION,PDO::ATTR_DEFAULT_FETCH_MODE=>PDO::FETCH_ASSOC]);
    }catch(PDOException $e){
      http_response_code(503);
      die('Database connection failed. Check config.php credentials, then run diagnose.php for a full report.');
    }
  }
  return $pdo;
}
function log_activity(string $actor,string $action,string $detail=''): void {
  try{ db()->prepare('INSERT INTO activity_log(ts,actor,action,detail) VALUES(NOW(),?,?,?)')
        ->execute([$actor,$action,mb_substr($detail,0,400)]); }catch(Throwable $e){}
}