<?php defined('SYSPATH') OR die('No direct access allowed.');



/**

 * Paypay (website payments pro) Payment Driver

 *

 *

 * @package    Payment

 * @author     Kohana Team

 * @copyright  (c) 2007-2008 Kohana Team

 * @license    http://kohanaphp.com/license.html

 */

class Payment_Paypalpro_Driver implements Payment_Driver

{

	// Fields required to do a transaction



	/**

	* these are the required fields for the API method DoDirectPayment

	* other API methods and the associated fields required are listed here: http://tinyurl.com/2cffgr

	*

	* *note - paypalpro API field names are not case sensitive

	*/



	private $required_fields = array

	(



		'ENDPOINT'       => FALSE,

		'USER'           => FALSE,

		'PWD'            => FALSE,

		'SIGNATURE'      => FALSE,

		'VERSION'        => FALSE,



		'METHOD'         => FALSE,



		'PAYMENTACTION'  => FALSE,



		'CURRENCYCODE'   => FALSE, // default is USD - only required if other currency needed

		'AMT'            => FALSE, // payment amount



		'IPADDRESS'      => FALSE,



		'FIRSTNAME'      => FALSE,

		'LASTNAME'       => FALSE,



		'CREDITCARDTYPE' => FALSE,

		'ACCT'           => FALSE, // card number

		'EXPDATE'        => FALSE,

		'CVV2'           => FALSE



	);



	private $fields = array

	(



		'ENDPOINT'       => '',

		'USER'           => '',

		'PWD'            => '',

		'SIGNATURE'      => '',

		'VERSION'        => '',



		'METHOD'         => '',

		/* some possible values for METHOD :

		   'DoDirectPayment',

		   'RefundTransaction',

		   'DoAuthorization',

		   'DoReauthorization',

		   'DoCapture',

		   'DoVoid'

		*/



		'PAYMENTACTION'  => '',



		'CURRENCYCODE'   => '',

		'AMT'            => 0,  // payment amount



		'IPADDRESS'      => '',



		'FIRSTNAME'      => '',

		'LASTNAME'       => '',



		'CREDITCARDTYPE' => '',

		'ACCT'           => '', // card number

		'EXPDATE'        => '', // Format: MMYYYY

		'CVV2'           => '', // security code



		// -- OPTIONAL FIELDS --



		'STREET'         => '',

		'STREET2'        => '',

		'CITY'           => '',

		'STATE'          => '',

		'ZIP'            => '',

		'COUNTRYCODE'    => '',



		'SHIPTONAME'        => '',

		'SHIPTOSTREET'      => '',

		'SHIPTOSTREET2'     => '',

		'SHIPTOCITY'        => '',

		'SHIPTOSTATE'       => '',

		'SHIPTOZIP'         => '',

		'SHIPTOCOUNTRYCODE' => '',



		'INVNUM'         => '' // your internal order id / transaction id



		// other optional fields listed here:

		// https://www.paypal.com/en_US/ebook/PP_NVPAPI_DeveloperGuide/Appx_fieldreference.html#2145100

	);



	private $test_mode = TRUE;



	/**

	 * Sets the config for the class.

	 *

	 * @param : array  - config passed from the payment library constructor

	 */

	 

	public function __construct($config)

	{

		$this->test_mode = $config['test_mode'];



		if ($this->test_mode)

		{

			$this->fields['USER']         = $config['SANDBOX_USER'];

			$this->fields['PWD']          = $config['SANDBOX_PWD'];

			$this->fields['SIGNATURE']    = $config['SANDBOX_SIGNATURE'];

			$this->fields['ENDPOINT']     = $config['SANDBOX_ENDPOINT'];

		}

		else

		{

			$this->fields['USER']         = $config['USER'];

			$this->fields['PWD']          = $config['PWD'];

			$this->fields['SIGNATURE']    = $config['SIGNATURE'];

			$this->fields['ENDPOINT']     = $config['ENDPOINT'];

		}



		$this->fields['VERSION']      = $config['VERSION'];

		$this->fields['CURRENCYCODE'] = $config['CURRENCYCODE'];



		$this->required_fields['USER']         = !empty($config['USER']);

		$this->required_fields['PWD']          = !empty($config['PWD']);

		$this->required_fields['SIGNATURE']    = !empty($config['SIGNATURE']);

		$this->required_fields['ENDPOINT']     = !empty($config['ENDPOINT']);

		$this->required_fields['VERSION']      = !empty($config['VERSION']);

		$this->required_fields['CURRENCYCODE'] = !empty($config['CURRENCYCODE']);



		$this->curl_config = $config['curl_config'];



		Kohana::log('debug', 'Paypalpro Payment Driver Initialized');

	}



	/**

	*@desc set fields for nvp string

	*/



	public function set_fields($fields)

	{

		foreach ((array) $fields as $key => $value)

		{

			$this->fields[$key] = $value;



			if (array_key_exists($key, $this->required_fields) and !empty($value))

			{

				$this->required_fields[$key] = TRUE;

			}

		

		}

	}

	

	/**

	*@desc process PayPal Website Payments Pro transaction

	*/



	public function process()

	{

		// Check for required fields

		if (in_array(FALSE, $this->required_fields))

		{

			$fields = array();



			foreach ($this->required_fields as $key => $field)

			{

				if (!$field) $fields[] = $key;

			}

			

			throw new Kohana_Exception('payment.required', implode(', ', $fields));

		}





		// Instantiate curl and pass the API post url

		$ch = curl_init($this->fields['ENDPOINT']);



		foreach ($this->fields as $key => $val)

		{

			// don't include unset optional fields in the name-value pair request string

			if ($val==='' OR $key=='ENDPOINT') unset($this->fields[$key]);

		}





		$nvp_qstr = http_build_query($this->fields);



		// Set custom curl options

		curl_setopt_array($ch, $this->curl_config);



		// Set the curl POST fields

		curl_setopt($ch, CURLOPT_POSTFIELDS, $nvp_qstr);



		// Execute post and get results

		$response = curl_exec($ch);



		if (curl_errno($ch))

		{

			$curl_error_no  = curl_errno($ch);

			$curl_error_msg = curl_error($ch);

			throw new Kohana_Exception('curl.error:'.$curl_error_no.' - '.$curl_error_msg);

		}



		curl_close ($ch);



		if (!$response)

			throw new Kohana_Exception('payment.gateway_connection_error');





		$nvp_res_array = array();



		parse_str(urldecode($response),$nvp_res_array);



		return ($nvp_res_array['ACK'] == TRUE);



	}

} // End Payment_Paypalpro_Driver Class