/**
 * TEST CLIENT DEMO
 * This mimics what the tool (Python/C++/etc.) should do.
 */

$apiUrl = "https://serverkey.nguonnick.com/api/claim.php";
$secret = "NetGen_Security_Master_2026_@Key";

$payload = [
    "license_key" => "CUT-TAY-XXXX",
    "tool_id" => "AUTO_GOM",
    "session_id" => "550e8400-e29b-41d4-a716-446655440000",
    "version" => "1.0.0",
    "client_ts" => time()
];

$jsonPayload = json_encode($payload);
$timestamp = time();

// Generate Signature
$signature = hash_hmac('sha256', $jsonPayload . $timestamp, $secret);

$headers = [
    "Content-Type: application/json",
    "X-Timestamp: $timestamp",
    "X-Signature: $signature"
];

// cURL Request
$ch = curl_init($apiUrl);
curl_setopt($ch, CURLOPT_POSTFIELDS, $jsonPayload);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

$response = curl_exec($ch);
curl_close($ch);

echo "Response from Server:\n";
print_r(json_decode($response, true));