<?php
/**
 * Class Mobilpay_Payment_Request_Sms
 * This class can be used for accessing mobilpay.ro payment interface for your configured online services
 * @copyright NETOPIA
 * @author Claudiu Tudose
 * @version 1.0
 * 
 */
class Mobilpay_Payment_Request_Sms extends Mobilpay_Payment_Request_Abstract  
{
	const ERROR_LOAD_FROM_XML_SERVICE_ELEM_MISSING		= 0x31000001;
	/**
	 * mobilePhone	(Optional)		- MSISDN (mobile phone numner) of the customer. If it's supplied it should be in 07XXXXXXXX format.
	 * If it's supplied mobilpay.ro will autocomplete mobile phone field on payment interface
	 *
	 * @var string(10)
	 */
	public $msisdn		= null;
	
	function __construct()
	{
		parent::__construct();
		$this->type = self::PAYMENT_TYPE_SMS;
	}
	
	protected function _loadFromXml(DOMElement $elem)
	{
		parent::_parseFromXml($elem);
		
		//SMS request specific data
		$elems = $elem->getElementsByTagName('service');
		if($elems->length != 1)
		{
			throw new Exception('Mobilpay_Payment_Request_Sms::loadFromXml failed: service is missing', self::ERROR_LOAD_FROM_XML_SERVICE_ELEM_MISSING);
		}
		$xmlElem = $elems->item(0);
		$this->service = $xmlElem->nodeValue;
		
		$elems = $elem->getElementsByTagName('msisdn');
		if($elems->length == 1)
		{
			$this->msisdn = $elems->item(0)->nodeValue; 
		}
		
		$elem = $elem;
		return $this;
	}
	
	protected function _loadFromQueryString($queryString)
	{
		$parameters = explode('&', $queryString);
		$reqParams 	= array();
        foreach ($parameters as $item)
        {
        	list ($key, $value) = explode('=', $item);
        	$reqParams[$key] = urldecode($value);
        }
        
        if(!isset($reqParams['signature']))
        {
        	throw new Exception('Mobilpay_Payment_Request_Sms::loadFromQueryString failed: signature is missing', self::ERROR_LOAD_FROM_XML_SIGNATURE_ELEM_MISSING);
        }
        $this->signature = $reqParams['signature'];
        if(!isset($reqParams['service']))
        {
        	throw new Exception('Mobilpay_Payment_Request_Sms::loadFromQueryString failed: service is missing', self::ERROR_LOAD_FROM_XML_SERVICE_ELEM_MISSING);
        }
        $this->service = $reqParams['service'];
        if(!isset($reqParams['tran_id']))
        {
        	throw new Exception('Mobilpay_Payment_Request_Sms::loadFromQueryString failed: empty order id', self::ERROR_LOAD_FROM_XML_ORDER_ID_ATTR_MISSING);
        }
        $this->orderId = $reqParams['tran_id'];
        if(isset($reqParams['timestamp']))
        {
        	$this->timestamp = $reqParams['timestamp'];
        }
        if(isset($reqParams['confirm_url']))
        {
        	$this->confirmUrl = $reqParams['confirm_url'];
        }
        if(isset($reqParams['return_url']))
        {
        	$this->confirmUrl = $reqParams['return_url'];
        }
        if(isset($reqParams['msisdn']))
        {
        	$this->msisdn = $reqParams['msisdn'];
        }
        if(isset($reqParams['first_name']))
        {
        	$this->params['first_name'] = $reqParams['first_name'];
        }
        if(isset($reqParams['last_name']))
        {
        	$this->params['last_name'] = $reqParams['last_name'];
        }
        
		return $this;
	}
		
	protected function _prepare()
	{
		if(is_null($this->signature) || is_null($this->service) || is_null($this->orderId))
		{
			throw new Exception('One or more mandatory properties are invalid!', self::ERROR_PREPARE_MANDATORY_PROPERTIES_UNSET);
		}
		
		$this->_xmlDoc 		= new DOMDocument('1.0', 'utf-8');
		$rootElem 			= $this->_xmlDoc->createElement('order');

		//set payment type attribute
		$xmlAttr 			= $this->_xmlDoc->createAttribute('type');
		$xmlAttr->nodeValue	= $this->type;
		$rootElem->appendChild($xmlAttr);
		
		//set id attribute
		$xmlAttr 			= $this->_xmlDoc->createAttribute('id');
		$xmlAttr->nodeValue	= $this->orderId;
		$rootElem->appendChild($xmlAttr);
		
		//set timestamp attribute
		$xmlAttr 			= $this->_xmlDoc->createAttribute('timestamp');
		$xmlAttr->nodeValue	= date('YmdHis');
		$rootElem->appendChild($xmlAttr);
		
		$xmlElem			= $this->_xmlDoc->createElement('signature');
		$xmlElem->nodeValue	= $this->signature;
		$rootElem->appendChild($xmlElem);
		
		$xmlElem			= $this->_xmlDoc->createElement('service');
		$xmlElem->nodeValue	= $this->service;
		$rootElem->appendChild($xmlElem);
		
		if(!is_null($this->msisdn))
		{
			$xmlElem			= $this->_xmlDoc->createElement('msisdn');
			$xmlElem->nodeValue	= $this->msisdn;
			$rootElem->appendChild($xmlElem);
		}
		
		if(is_array($this->params) && sizeof($this->params) > 0)
		{
			$xmlParams = $this->_xmlDoc->createElement('params');
			foreach ($this->params as $key=>$value)
			{
				$xmlParam 	= $this->_xmlDoc->createElement('param');
				
				$xmlName			= $this->_xmlDoc->createElement('name');
				$xmlName->nodeValue = trim($key);
				$xmlParam->appendChild($xmlName);
				
				$xmlValue			= $this->_xmlDoc->createElement('value');
				$xmlValue->appendChild($this->_xmlDoc->createCDATASection(urlencode($value)));
				$xmlParam->appendChild($xmlValue);
				
				$xmlParams->appendChild($xmlParam);
			}
			
			$rootElem->appendChild($xmlParams);
		}
		
		if(!is_null($this->returnUrl) || !is_null($this->confirmUrl))
		{
			$xmlUrl = $this->_xmlDoc->createElement('url');
			if(!is_null($this->returnUrl))
			{
				$xmlElem = $this->_xmlDoc->createElement('return');
				$xmlElem->nodeValue = $this->returnUrl;
				$xmlUrl->appendChild($xmlElem); 
			}
			if(!is_null($this->confirmUrl))
			{
				$xmlElem = $this->_xmlDoc->createElement('confirm');
				$xmlElem->nodeValue = $this->confirmUrl;
				$xmlUrl->appendChild($xmlElem); 
			}
			
			$rootElem->appendChild($xmlUrl);
		}
		
		$this->_xmlDoc->appendChild($rootElem);

		return $this;
	}
}
