<?php

/** Disable comments + pings by default. */
add_action('init', function () {
	update_option('default_comment_status', 'closed');
	update_option('default_ping_status', 'closed');
	update_option('default_pingback_flag', '0');
});


/** Remove comment + trackback support. */
add_action('init', function () {
	foreach (get_post_types() as $post_type) {
		remove_post_type_support($post_type, 'comments');
		remove_post_type_support($post_type, 'trackbacks');
	}
});


/** Remove comment feeds. */
add_action('init', function () {
	remove_action('wp_head', 'feed_links_extra', 3);
});
add_filter('feed_links_show_comments_feed', '__return_false');


/** Close comments + pings. */
add_filter('comments_open', '__return_false', 20, 2);
add_filter('pings_open', '__return_false', 20, 2);


/** Hide existing comments. */
add_filter('comments_array', '__return_empty_array', 10, 2);


/** Remove comment reply script. */
add_action('wp_enqueue_scripts', function () {
	wp_dequeue_script('comment-reply');
});


/** Block comments pages in admin. */
add_action('admin_init', function () {
	global $pagenow;

	if ($pagenow === 'edit-comments.php' || $pagenow === 'options-discussion.php') {
		wp_safe_redirect(admin_url());
		exit;
	}
});


/** Remove dashboard + menus. */
add_action('admin_init', function () {
	remove_meta_box('dashboard_recent_comments', 'dashboard', 'normal');
});

add_action('admin_menu', function () {
	remove_menu_page('edit-comments.php');
	remove_submenu_page('options-general.php', 'options-discussion.php');
});


/** Remove admin bar icon. */
add_action('admin_bar_menu', function ($wp_admin_bar) {
	$wp_admin_bar->remove_node('comments');
}, 999);


/** Disable pingbacks (XML-RPC). */
add_filter('wp_headers', function ($headers) {
	unset($headers['X-Pingback']);
	return $headers;
});

add_filter('xmlrpc_methods', function ($methods) {
	unset($methods['pingback.ping']);
	return $methods;
});


/** Remove REST comment routes. */
add_filter('rest_endpoints', function ($endpoints) {
	foreach ($endpoints as $route => $data) {
		if (strpos($route, 'comments') !== false) {
			unset($endpoints[$route]);
		}
	}
	return $endpoints;
});