include_once( ABSPATH . 'wp-admin/includes/plugin.php' );
$plugin = 'wp-super-cache/wp-cache.php';
if ( !is_plugin_active($plugin) ) {
    // caching not active - just add body class filter hook and call it a day
    add_filter('body_class','awebsome_browsel_class_names');
} else {
    // caching is enabled - add browser classes using AJAX calls
    add_action( 'init', 'enqueue_awebsome_browsel_scripts' );   // this does the ajax request
    // both logged in and not logged in users can send this AJAX request,
    add_action( 'wp_ajax_nopriv_awebsome-browsel', 'awebsome_browsel_ajax' );
    add_action( 'wp_ajax_awebsome-browsel', 'awebsome_browsel_ajax' );

}


function enqueue_awebsome_browsel_scripts ( ) {
    $ajaxurl = admin_url( 'admin-ajax.php' );
    $ajaxurl = array_filter(explode('/', $ajaxurl));
    array_shift($ajaxurl);
    array_shift($ajaxurl);
    $ajaxurl = '/' . implode('/',$ajaxurl);
    wp_enqueue_script( 'awebsome_browsel-ajax', plugin_dir_url( __FILE__ ) . 'js/fetch-body-classes.js', array('jquery') );
    wp_localize_script( 'awebsome_browsel-ajax', 'AwebsomeBrowsel', array( 'ajaxurl' => $ajaxurl ) );
}

function print_awebsome_browsel_scripts ( ) {
    wp_print_scripts( 'awebsome_browsel' );
}

function awebsome_browsel_ajax ( ) {
    echo awebsome_browsel_filter_UA();
    exit();
}