Add client Name & Date to Apps+ Cancellation Email

gistfile1.txt

function my_app_email_on_appointment_cancelled ($app_id) {
	global $appointments;
	$to = $appointments->get_admin_email();
​
    $appt = $appointments->get_app($app_id);
    $date = date_i18n( 'F j, Y', strtotime( $appt->start ) ) . ' at ' . date_i18n( 'G:i', strtotime( $appt->start ) );
    $body = "{$appt->name} cancelled his appointment on {$date}\n\n
    Appointment ID {$app_id}";
​
    $worker_email = $appointments->get_worker_email($appt->worker);
    if(is_array($to)) {
        $to[] = $worker_email;
    } else {
        $to = array($to, $worker_email);
    }
​
	wp_mail($to, 'An appointment has been cancelled', $body);
}
add_action('app-appointments-appointment_cancelled', 'my_app_email_on_appointment_cancelled');