<?php
require_once 'Configuration.php';

abstract class Modele
{
    private static $bdd;
	
    protected function executerRequete($sql, $params = null)
    {
        if ($params == null) {
            $resultat = self::getBdd()->query($sql);   // exécution directe
        }
        else {
            $resultat = self::getBdd()->prepare($sql); // requête préparée
            $resultat->execute($params);
        }
        return $resultat;
    }
    private static function getBdd()
    {
        if (self::$bdd === null) {
            $dsn = Configuration::get("dsn");
            $login = Configuration::get("login");
            $mdp = Configuration::get("mdp");
            self::$bdd = new PDO($dsn, $login, $mdp,
                    array(PDO::ATTR_ERRMODE => PDO::ERRMODE_EXCEPTION));
			
			self::$bdd->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, true); 
					
        }
        return self::$bdd;
    }
	
    protected function dernierId()
    {
        return self::getBdd()->lastInsertId();
    }
}