class dwAPI{

	private $conn;
	private $url;
	
	//construct - select retrieve data method (file_get_contents [default] or cURL) 
	public function __construct($pref='file')
	{
		$this->conn = ($pref != 'file' || !ini_get('allow_url_fopen')) ? new dwCurlGet : new dwFileGet;
	}
	
	//get forum list shortcut
	public function getForums($self=false, $specify=false, $related=false)
	{
		$incSelf = ($self) ? '?include_self=' : '';
		$incRelated = ($related && in_array($related, array("ancestors","children","descendants"))) ? '/' . $related : ''; 
		if($specify)
		{
			if(is_array($specify)){	
				$incSpecifics = implode(";",$specify);
			}elseif(is_int($specify)){
				$incSpecifics = $specify;	
			}else{
				$incSpecifics = str_replace(',',';',$specify);	
			}
			$incSpecifics = '/' . $incSpecifics;
		}else{
			$incSpecifics = '';	
		}
		
		$this->url = 'http://www.daniweb.com/api/forums' . $incSpecifics . $incRelated . $incSelf;
		
		//====TEST URL====//
		//echo $this->url;
		//====/TEST URL===//
		
		return $this->returnData();
	}
	
	//get data from direct url
	public function getList($url)
	{
		$this->url = $url;
		return $this->returnData();
	}
	
	//Hand off return data to the applied 'get' type
	private function returnData()
	{
		return $this->conn->getJSON($this->url);	
	}
	
	//Return data as PHP multidimensional array
	public function json2Array($str)
	{
		return json_decode($str,true);	
	}
}


//classes implementing iConn must have this/these methods
interface iConn{
	function getJSON($url);
}

//filegetcontents retrieve
class dwFileGet implements iConn{
	public function getJSON($url){
		$result = false;
		if($content = file_get_contents($url))
		{
			$result = $content;	
		}
		return $result;	
	}
}

//curl retrieve
class dwCurlGet implements iConn{
	//Thanks to pritaeas for most of this cURL bit
	public function getJSON($url){
		$result = false;
		if (extension_loaded('curl'))
		{
			$ch = curl_init();
			if ($ch)
			{
				curl_setopt($ch, CURLOPT_URL, $url);
				curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
				$curl = curl_exec($ch);
				if ($curl)
				{
					$result = $curl;
				}
				curl_close($ch);
			}
		}
		return $result;
	}
}
?>