<?php

require_once("config/config.php");

$apiUrl = $endpoint;
//$officeId = 'YOUR_OFFICE_ID';
//$apiKey = 'YOUR_API_KEY';
//$publicKey = 'YOUR_PUBLIC_KEY';
//$pacoEncryptionPublic = 'YOUR_PACO_ENCRYPTION_PUBLIC_KEY';
//$pacoSigningPublic = 'YOUR_PACO_SIGNING_PUBLIC_KEY';

// Prepare payment data
/*$data = array(
    'amount' => '100.00',
    'currency' => 'THB',
    'paymentDescription' => 'Payment Description',
    // Add other required parameters
);*/

// ข้อมูลการทำธุรกรรม
$transactionId = '1234567890'; // เลขอ้างอิงธุรกรรม
$amount = 1000; // จำนวนเงินที่ต้องการชำระเงิน
$currency = 'THB'; // สกุลเงิน
$description = 'Payment for Order #123'; // รายละเอียดการชำระเงิน

// สร้างข้อมูล Payload
$payload = array(
    'transaction_id' => $transactionId,
    'amount' => $amount,
    'currency' => $currency,
    'description' => $description,
);

// แปลงข้อมูลเป็นรูปแบบ JSON
$jsonPayload = json_encode($payload);
var_dump($jsonPayload);

// เข้ารหัสข้อมูล Payload ด้วย PACO Encryption Public Key
$encryptedPayload = openssl_public_encrypt(json_encode($payload), $encryptedData, $pacoEncryptionPublicKey);
$encodedData = base64_encode($encryptedData);
echo($encodedData);
echo($encryptedPayload);

// Generate the Signature
$signature = hash_hmac('sha256', implode('', json_encode($payload)), $pacoSigningPublicKey);

var_dump($signature);
// Create the API request
$requestData = array(
    'paymentRequest' => json_encode($payload),
    'signature' => $signature,
);

// Set up headers
$headers = array(
    'Content-Type: application/json',
    'Office-Id: ' . $officeid,
    'Api-Key: ' . $apiKey,
);

// Send the API request
$ch = curl_init($apiUrl);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($requestData));
$response = curl_exec($ch);
curl_close($ch);

// Process the API response
if ($response === false) {
    echo 'Error: ' . curl_error($ch);
} else {
    $responseData = json_decode($response, true);
    if (isset($responseData['paymentUrl'])) {
        $paymentUrl = $responseData['paymentUrl'];
        // Redirect the user to the payment URL
        header('Location: ' . $paymentUrl);
        exit;
    } else {
        echo 'Payment URL not found in the API response';
    }
}
?>