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<?php
/********************************
*  Quickchef PDO Database connection class
*
* @author Jeramy Wenserit
* @version 0.1.1
*
*********************************/


abstract class qcPdoDatabase {
	/********* CONFIG ***************/
	const DEFAULTPATH = '/var/www/quickchef/app/models/qcPdoDatabase/';
	const SQL_SERVER = '127.0.0.1'; /* default SQL Server ... Override in subclasses if different */
	const SQL_USER = 'root'; /* default SQL username ... Override in subclasses if different */
	const SQL_PASS = ''; /* default SQL password ... Override in subclasses if different */
	const SQL_SERVICE = 'mysql';
	const SQL_DATABASE = 'quickchef';
	/********* END OF CONFIG ***********/
	
	// SQL connection handles
	const NONSPEC 	= 'qcPdoStandard';
	const USERS 			= 'qcPdoUsers';
	const FORUM 		= 'qcPdoForum';
	
	//SQL data container
	const SQLDATA = 'qcPdoSqlData';
	
	// variables
	protected $pdoConn = null;
	
	protected function __construct() {
		// forces user to use getDbObject('name')
	}
	
	protected function connect() {
		$this->pdoConn = 
			new PDO(self::SQL_SERVICE.':host='.self::SQL_SERVER.';dbname='.self::SQL_DATABASE, self::SQL_USER, self::SQL_PASS);
	}
	
	protected function close() {
		$this->pdoConn = null;
	}
	
	static public function getDbObject($name = null) {
		if ($name) {
			if (file_exists(self::DEFAULTPATH.$name.".php")) 
			{
				// load require file of sub-class
				require_once(self::DEFAULTPATH.$name.".php");
				
				// now check weather the class actually exists in the file
				if (class_exists($name)) {
					$newClass =  new $name();
					
					// will only call Init() if its a sub-class of this class
					if (!$newClass instanceof qcPdoSqlData)
					{
						$newClass->init();
					}
					return $newClass;
				}
				else
				{
					throw new exception($name.": class doesn't exist in ".self::DEFAULTPATH.$name.".php");
					return null; //returns null because the file or class didn't exist
				}
			} 
			else
			{
				throw new exception(self::DEFAULTPATH.$name.".php: File doesn't exist.");
				return null; //returns null because the file or class didn't exist
			}
		} 
		else
		{
			throw new exception('$name contains a NULL Value, please specifiy a database connection type');
			return null; // return null if no name specified
		}
	}
	
	/*
	* Standard QC PDO Query - Pass qcPdoSqlData reference to me changed
	*/
	protected function query(qcPdoSqlData $sql) {
		$this->connect();
		$rowCount =0;
		try {
			$preSetFetch = $this->pdoConn->query($sql->readSql());
			
			if ($preSetFetch)
			{
				
				foreach ($preSetFetch->fetchAll(PDO::FETCH_ASSOC) as $row)
				{
					$sql->appendRows($row);
					$sql->setSuccessful();
					$rowCount++;
				}
			} 
			
			if ($rowCount === 0)
			{
				$sql->setFailure(qcPdoSqlData::NO_ROWS);
			}
			/*else
			{
				$sql->setFailure("Invalid Username or Password.");
			}*/
		} 
		catch (exception $e) 
		{
			
			$sql->setFailure($e->getMessage());
		}
		
		$this->close();
	}
	
	protected function insertRow(qcPdoSqlData $sql) 
	{
		$this->connect();
		
		$sql->setSuccessful(); // set as successful just incase a failure doesn't occur.
		
		$this->pdoConn->exec($sql->readSql()) or 
			$sql->setFailure($this->pdoConn->errorInfo());
		
		$this->close();		
	}
	
	protected function updateRow(qcPdoSqlData $sql) 
	{
		$this->insertRow($sql);
	}
	abstract protected function init();
	//abstract public function getData();
}

?>

/************************************************************************


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