<?
///////////////////////////////////////////
// 				Helper classes
///////////////////////////////////////////

class MAL extends DAL
{
	protected $host		= 'localhost';
	protected $user		= 'root';
	protected $password	= '';
	protected $database	= 'blog';
	protected $link=null;
	
	public $row_count = -1;
	public $hasError = false;
	public $errorMsg = '';  
	function __construct($host='',$user='',$password='-1',$database='')
	{		
		/*
		 *  instead of using app specific logic here, should be used MYMAL 
		 *  to be extended by models like PostModel
		 */
		global $papa_config;
		//$papa_config->database->host,$papa_config->database->username,$papa_config->database->password,$papa_config->database->dbname
		if(empty($host)){
			$host = $papa_config['database']['host'];
		}
		if(empty($user)){
			$user = $papa_config['database']['username'];
		}
		if($password=='-1'){
			$password = $papa_config['database']['password'];
		}
		if(empty($database)){
			$database = $papa_config['database']['dbname'];
		}
		
		$this->host = $host;
		$this->user = $user;
		$this->password = $password;
		$this->database = $database;
		//echo "$host,$password,$database,$user";
		
		$this->link = mysql_connect($this->host,$this->user,$this->password);
		echo(mysql_error($this->link)); 
		//echo 'user = '.$papa_config->database->username.'<hr>';
		mysql_select_db($this->database,$this->link);
		//die($database);
		mysql_query("SET character_set_results=utf8",$this->link);
		$this->row_count = -1;
	}
	
	function execute($sql, array $params = array())
	{
		if( count($params) > 0 ){
			$sql = vsprintf( $sql, $params );
		}
		//$this->link = mysql_connect($this->host,$this->user,$this->password); 
		mysql_select_db($this->database);	
		//mysql_select_db($this->database,$this->link);
		//echo($sql);
		mysql_select_db($this->database,$this->link);
		//mysql_query("SET character_set_results=utf8",$this->link);
		mysql_query("SET character_set_results=utf8");
		mysql_set_charset('utf8');
		//die($sql);
		$res =  mysql_query($sql);
		@$this->row_count = mysql_num_rows($res);
		@$this->hasError = mysql_errno($this->link);
		if(empty($this->hasError)){
			$this->hasError =false;
		}else{
			$this->hasError =true;
			$this->errorMsg = mysql_error($this->link);
			echo(mysql_error($this->link)); 
		}
                
		//var_dump($this->hasError);
		//echo mysql_error($this->link);
		//die('hre='.$this->row_count);
                
		return $res;
	}
	public function getRowCount(){
		return $this->row_count;
	}
	
	function get_table_columns($table){}
	
	function get_connection()
	{
		return $this->link;
	}
	
	/**
	 * Checks if the value is unique in the user table
	 *
	 * @param  $col The column in the user tabls
	 * @param  $val The value to be checked
	 */
	public function isUnique( $col, $val, $table ){
		$col = mysql_real_escape_string($col);
		$val = mysql_real_escape_string($val);
		$table = mysql_real_escape_string($table);
		$sql = "select * from $table where $col='$val';";
		$res = $this->execute($sql);
		if($this->row_count>0){
			return false;
		}
		return true;
	}
	
	
	//TODO simple prepared statement
	/*
	 function preparedStatement(){}
	 //*/
}
?>