File: //proc/self/root/var/www/linde/wp-content/plugins/lindevr-site-plugin/video/rest.php
<?php
if ( ! defined( 'ABSPATH' ) ) {
    exit; // Exit if accessed directly
}
// create a REST API endpoint on /wp-json/linde-vr-video/v1/checkVersion that triggers check_version function
add_action('rest_api_init', function () {
    register_rest_route( 'linde-vr-video/v1', 'checkVersion',array(
        'methods'  => WP_REST_Server::READABLE,
        'callback' => 'linde_check_video_version',
        'permission_callback' => '__return_true'
    ));
});
function linde_check_video_version(){
    $video = get_field('video_file', 'option');
    $version = get_field( 'video_version', 'option', true );
    echo json_encode(array(
        'url' => $video['url'],
        'version' => $version
    ));
}
?>