<?php
/*------------------------------------------------------------------------------
  $Id$

  AbanteCart, Ideal OpenSource Ecommerce Solution
  http://www.AbanteCart.com

  Copyright © 2011-2014 Belavier Commerce LLC

  This source file is subject to Open Software License (OSL 3.0)
  License details is bundled with this package in the file LICENSE.txt.
  It is also available at this URL:
  <http://www.opensource.org/licenses/OSL-3.0>
  
 UPGRADE NOTE: 
   Do not edit or add to this file if you wish to upgrade AbanteCart to newer
   versions in the future. If you wish to customize AbanteCart for your
   needs please refer to http://www.AbanteCart.com for more information.  
------------------------------------------------------------------------------*/
if (! defined ( 'DIR_CORE' )) {
	header ( 'Location: static_pages/' );
}
final class ADB {
    /**
     * @var MySql|AMySQLi
     */
    private $driver;
	public $error='';
	public $registry;

    /**
     * @param string $driver
     * @param string $hostname
     * @param string $username
     * @param string $password
     * @param string $database
     * @throws AException
     */
    public function __construct($driver, $hostname, $username, $password, $database) {
        $filename = DIR_DATABASE . $driver . '.php';
		if (file_exists($filename)) {
            /** @noinspection PhpIncludeInspection */
            require_once($filename);
		} else {
			throw new AException(AC_ERR_MYSQL, 'Error: Could not load database file ' . $driver . '!');
		}
				
		$this->driver = new $driver($hostname, $username, $password, $database);
		
		$this->registry = Registry::getInstance();
	}

    /**
     * @param string $sql
     * @param bool $noexcept
     * @return bool|stdClass
     */
    public function query($sql,$noexcept=false) {
  		
        if ( $this->registry->has('extensions') ) {
	        $result = $this->registry->get('extensions')->hk_query($this, $sql,$noexcept);
        } else {
        	$result = $this->_query($sql,$noexcept);
        }
		if($noexcept && $result===false){
			$this->error = $this->driver->error;
		}
		return $result;
    }

    /**
     * @param string $table_name
     * @return string
     */
    public function table($table_name){
		//detect if encryption is enabled
		$postfix = '';
		if ( is_object($this->registry->get('dcrypt')) ) {
			$postfix = $this->registry->get('dcrypt')->posfix($table_name);
		}
		return DB_PREFIX . $table_name . $postfix;
	}

    /**
     * @param string $sql
     * @param bool $noexcept
     * @return bool|stdClass
     */
    public function _query($sql, $noexcept=false) {
		return $this->driver->query($sql,$noexcept);
  	}
  	
	public function escape($value) {
		return $this->driver->escape($value);
	}

    /**
     * @return int
     */
    public function countAffected() {
		return $this->driver->countAffected();
  	}

    /**
     * @return int
     */
    public function getLastId() {
		return $this->driver->getLastId();
  	}

    /**
     * @param $file
     * @return null
     */
    public function performSql($file){

        if ($sql = file($file)) {
			$query = '';
			foreach($sql as $line) {
				$tsl = trim($line);
				if (($sql != '') && (substr($tsl, 0, 2) != "--") && (substr($tsl, 0, 1) != '#')) {
					$query .= $line;
					if (preg_match('/;\s*$/', $line)) {
						$query = str_replace("`ac_", "`" . DB_PREFIX, $query);
						$result = $this->_query($query);
						if (!$result) {
							$this->error = mysql_error();
                            return null;
						}
						$query = '';
					}
				}
			}
        }
    }
}