/**
 * Disable support for comments and trackbacks in post types
 */
function itc_disable_comments_post_types_support() {
    $post_types = get_post_types();
    foreach ($post_types as $post_type) {
        if (post_type_supports($post_type, 'comments')) {
            remove_post_type_support($post_type, 'comments');
            remove_post_type_support($post_type, 'trackbacks');
        }
    }
}
add_action('admin_init', 'itc_disable_comments_post_types_support');


/**
 * Close comments on the front-end (force comments_open() and pings_open() to return false)
 */
function itc_disable_comments_status() {
    return false;
}
add_filter('comments_open', 'itc_disable_comments_status', 20, 2);
add_filter('pings_open', 'itc_disable_comments_status', 20, 2);


/**
 * Hide existing comments (always return an empty array)
 */
function itc_disable_comments_hide_existing($comments) {
    return [];
}
add_filter('comments_array', 'itc_disable_comments_hide_existing', 10, 2);


/**
 * Block comment‐related feeds (e.g., /comments/feed/)
 */
function itc_disable_comments_feed_redirect() {
    if (is_comment_feed()) {
        wp_redirect(home_url(), 301);
        exit;
    }
}
add_action('template_redirect', 'itc_disable_comments_feed_redirect');


/**
 * Disable XML‐RPC methods for pingbacks/trackbacks
 */
add_filter('xmlrpc_methods', function($methods) {
    if (isset($methods['pingback.ping'])) {
        unset($methods['pingback.ping']);
    }
    if (isset($methods['pingback.extensions.getPingbacks'])) {
        unset($methods['pingback.extensions.getPingbacks']);
    }
    return $methods;
});


/**
 * Remove the comment-reply script from front-end
 */
function itc_disable_comment_reply_script() {
    wp_dequeue_script('comment-reply');
}
add_action('wp_print_scripts', 'itc_disable_comment_reply_script');


/**
 * Remove any “Comments” links from custom Nav Menus
 */
function itc_remove_comments_from_nav_menus($items, $args) {
    foreach ($items as $key => $item) {
        // If the menu item’s URL contains “#comments” or “/comments/” or “/feed/comments/”, remove it
        if (
            strpos($item->url, '#comments') !== false ||
            strpos($item->url, '/comments/') !== false ||
            strpos($item->url, '/feed/comments/') !== false
        ) {
            unset($items[$key]);
        }
    }
    return $items;
}
add_filter('wp_nav_menu_objects', 'itc_remove_comments_from_nav_menus', 10, 2);