prepare("SELECT leave_requests.*, users.full_name AS student_name FROM leave_requests JOIN users ON leave_requests.student_id = users.id WHERE status = 'pending' AND created_at < NOW() - INTERVAL 24 HOUR");
$stmt->execute();
$requests = $stmt->fetchAll();
foreach ($requests as $request) {
// Send reminder email to teacher
$teacher_email = 'teacher@example.com'; // Hardcoded for now
$subject = 'Reminder: Pending Leave Request from ' . $request['student_name'];
$body = "This is a reminder that a leave request from {$request['student_name']} is still pending your approval.
\n Please login to the dashboard to review the request.
";
MailService::sendMail($teacher_email, $subject, $body);
}