<?php

/**
 * Payment API Settings
 */
$terminalID = 'anaqeed';
$password   = 'anaqeed@123';
$secretKey  = '77995d3e6232b329dc9bc3cbe6b7685d11c742dca5dbaa8ede0fbf052dc307ef';


// Generate trackID
function generateRandomString ( $length = 8 ) {
    $characters       = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
    $charactersLength = strlen($characters);
    $randomString     = '';
    for ( $i = 0; $i < $length; $i++ ) {
        $randomString .= $characters[rand(0, $charactersLength - 1)];
    }
    return 'trck'.$randomString;
}
$trackID = generateRandomString(12);


// Item Details
$customerIP    = '218.212.106.238';
$customerEmail = 'nojoud.khaled@hotmail.com';
$currency      = 'SAR';
$country       = 'SA'; // Country Code
$amount        = '200.00';


//  trackid | Terminalid | password | secret_key | amount | currency_code
$token = "$trackID|$terminalID|$password|$secretKey|$amount|$currency";
$hashToken = hash('sha256', $token);



/**
 * Sending Payment request
 */
$fields = array(
    'trackid'       =>  $trackID,
    'terminalId'    =>  $terminalID,
    'customerEmail' =>  $customerEmail,
    'action'        =>  '1', // action is always 1
    'merchantIp'    =>  $customerIP,
    'password'      =>  $password,
    'currency'      =>  $currency,
    'country'       =>  $country,
    'amount'        =>  $amount,
    'requestHash'   =>  $hashToken
);
$data  = json_encode($fields);
$error = '';

$url = "https://payments-dev.urway-tech.com/URWAYPGService/transaction/jsonProcess/JSONrequest";
$ch  = curl_init();
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(
    'Content-Type: application/json',
    'Content-Length: ' . strlen($data)
));
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$responseData = curl_exec($ch);
if ( curl_errno( $ch ) ) {
    $error = curl_error($ch);
}
curl_close($ch);
$responseData = json_decode($responseData, TRUE);

if ( isset( $responseData['payid'] ) && ! empty( $responseData['payid'] ) ) {
    $url = $responseData['targetUrl'] . '?paymentid=' . $responseData['payid'];
    echo '
    <form name="pymForm" method="POST" action="'. $url .'">
        <h1>Transaction is processing.....</h1>
    </form>
    <script>document.pymForm.submit();</script>
    ';
}
else {
    // echo $error;
    echo "<h1>Something went wrong!</h1>";
}