<?php
if (!defined("_GNUBOARD_")) exit; // 개별 페이지 접근 불가

/*
****************************************************************************************
* <Cancel Request Parameter>
* The sample page only shows basic (required) parameters.
****************************************************************************************
*/
$merchantKey = $default['de_nicepay_key'];
$mid = $default['de_nicepay_mid'];
$moid = isset($od_id) ? $od_id : get_session('ss_order_id');		
$cancelMsg = $cancel_msg;
$tid = $tno;
$partialCancelCode = isset($partialCancelCode) ? (int) $partialCancelCode : 0;

/*
****************************************************************************************
* <Hash encryption> (do not modify)
* SHA-256 hash encryption is a way to prevent forgery.
****************************************************************************************
*/
$ediDate = preg_replace('/[^0-9]/', '', G5_TIME_YMDHIS);
$signData = bin2hex(hash('sha256', $mid . $cancelAmt . $ediDate . $merchantKey, true));

try{
	$data = Array(
		'TID' => $tid,
		'MID' => $mid,
		'Moid' => $moid,
		'CancelAmt' => $cancelAmt,
		'CancelMsg' => iconv("UTF-8", "EUC-KR", $cancelMsg),
		'PartialCancelCode' => $partialCancelCode,
		'EdiDate' => $ediDate,
		'SignData' => $signData,
		'CharSet' => 'utf-8'
	);

	/*
	****************************************************************************************
	* <Cancel Request>
	****************************************************************************************
	*/
	$response = nicepay_reqPost($data, "https://pg-api.nicepay.co.kr/webapi/cancel_process.jsp"); //Cancel API call

	$result = json_decode($response, true);

	if (isset($result['ResultCode'])) {
		$responseTid = isset($result['TID']) ? $result['TID'] : $tid;
		$responseCancelAmt = isset($result['CancelAmt']) ? $result['CancelAmt'] : $cancelAmt;
		$responseSignature = isset($result['Signature']) ? $result['Signature'] : '';
		$responseSignData = bin2hex(hash('sha256', $responseTid . $mid . $responseCancelAmt . $merchantKey, true));
		$isCancelSuccess = ($result['ResultCode'] === '2001' || $result['ResultCode'] === '2211');

		if (($isCancelSuccess || $responseSignature) && $responseSignature != $responseSignData) {
			$result['ResultCode'] = '9998';
			$result['ResultMsg'] = '취소 응답 유효성 검증 실패';
		}
	}

}catch(Exception $e){
	$e->getMessage();
	$result = array(
		'ResultCode' => '9999',
		'ResultMsg'  => '통신실패'
	);
}