<?php
namespace Blog\Database;

use PDO;
use PDOException;

class Database {
  private static ?PDO $pdo = null;

  public static function getConnection(): PDO {
    if(self::$pdo === null) {
      $config = parse_ini_file(__DIR__ . "/../../.env");
      try {
        self::$pdo = new PDO(
          "mysql:host={$config['DB_HOST']};dbname={$config['DB_NAME']};charset=utf8mb4",
          $config['DB_USER'],
          $config['DB_PASS'], [
            PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION,
            PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_OBJ,
            PDO::ATTR_PERSISTENT => true
          ]
        );
      } catch(PDOException $e) {
        die("Datenbankverbindung fehlgeschlagen: " . $e->getMessage());
      }
    }
    return self::$pdo;
  }
}