<?php

namespace database;

include_once "../../global.inc.php";
include_once PATH_CONFIG . "/config.db.php";

/**
 * The SQLManager manage the SQL-Connection for an API
 * @author stubbfel
 * @since 20.06.2013
 */
abstract class SqlManager {

    /**
     * Variable for address of the server
     * @var string
     */
    private $serverAddress;

    /**
     * Variable for name of the databaseuser
     * @var string
     */
    private $userName;

    /**
     * Variable for name of the database
     * @var string
     */
    private $dbName;

    /**
     * Variable for password of the user
     * @var string
     */
    private $userPw;

    /**
     * Variable for link of the connection to the server
     * @var connection
     */
    private $link;

    /**
     * String for an and-operrator
     * @var string
     */
    protected static $andTerm = " and ";

    /**
     * String for an or-operrator
     * @var string
     */
    protected static $orTerm = " or ";

    /**
     * String for quotes in a query
     * @var string
     */
    protected static $quoteTerm = "\"";

    /**
     * String for open Bracket in a query
     * @var string
     */
    protected static $openBracket = "(";
    
        /**
     * String for close Bracket in a query
     * @var string
     */
    protected static $closeBracket = ")";

    /**
     * Default-Constructor
     */
    public function __construct() {
        $this->serverAddress = \config\DBConfig::$sqlServer;
        $this->dbName = \config\DBConfig::$sqlDBName;
        $this->userName = \config\DBConfig::$sqlDBUser;
        $this->userPw = \config\DBConfig::$sqlDBUserPW

    ;
    }

    /**
     * Default-DEConstructor
     */
    public function __destruct() {
        
        // close connection
        $this->closeConnection();
        
        // delete connection parameter
        unset($this->serverAddress);
        unset($this->dbName);
        unset($this->userName);
        unset($this->userPW

    );
    }

    /**
     * Method setup the connection to the Database
     */
    public function connect() {
        $this->link = mysql_connect($this->serverAddress , $this->userName , $this->userPw);
        if (!$this->link) {
            exit("No Connection: " . mysql_error());
        }
        $selected = mysql_select_db($this->dbName , $this->link);
        if (!$selected) {
            exit("No DB: " . mysql_error());
        }
    }

    /**
     * Method close the connection
     */
    public function closeConnection() {
        if (

    $this->link) {
            mysql_close($this->link);
            unset($this->link);
            $this->link = null;
        }
    }

    /**
     * Method send a query to the Datebase and return the result
     * @param string $query

    
     * @return result[num][assoc]
     */
    protected function query($query) {
        
        // send error
        $mysqlResult = mysql_query($query, $this->link );
        if (!$mysqlResult) {
           // echo $query;
            exit("Query error: " . mysql_error());
        }
        
        // fetch result
        $rowNums = mysql_num_rows($mysqlResult);
        $result = array();
        for ($i = 0;  $i < $rowNums;  $i++) {
            $row = mysql_fetch_assoc($mysqlResult);
            $result[$i] = $row;
        }
        
        // call gc
        mysql_free_result($mysqlResult);
        
        return $result;
    }
}

?>