<?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 $resultat;
    }
    private static function getBdd()
    {
		if (!isset($_SESSION['c_codeSociete']))
		{
			$_SESSION['c_codeSociete']="ebene";
			$_SESSION['old_codeSociete']="";
		}	 
		$codeSociete = $_SESSION['c_codeSociete'];
		
        // if (self::$bdd === null) {
		if ($_SESSION['c_codeSociete'] != $_SESSION['old_codeSociete']) {
			$_SESSION['old_codeSociete']= $_SESSION['c_codeSociete'];
            $dsn = Configuration::get("dsn".$codeSociete);
            $login = Configuration::get("login".$codeSociete);
            $mdp = Configuration::get("mdp".$codeSociete);

			$_SESSION['param_bdd'] = array
			(
				"codeSociete" => $codeSociete,
				"dsn" => $dsn,
				"login" => $login,
				"mdp" => $mdp
			);
			
            self::$bdd = new PDO
			(
					$dsn, 
					$login, 
					$mdp,
                    array
					(
						PDO::ATTR_ERRMODE 					=> PDO::ERRMODE_EXCEPTION,
						PDO::MYSQL_ATTR_USE_BUFFERED_QUERY 	=> true
					)
			);
			// $pdo->setAttribute(PDO::MYSQL_ATTR_USE_BUFFERED_QUERY, false);
        }
        return self::$bdd;
    }
	
    protected function dernierId()
    {
        return self::getBdd()->lastInsertId();
    }
}