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<?php
/**
* This file contains the Front class for handling the front-end sitemap functionality.
*
* @package SmartCrawl
*/
namespace SmartCrawl\Sitemaps;
use SmartCrawl\Singleton;
use SmartCrawl\Controllers;
/**
* Class Front
*
* Handles the front-end sitemap functionality.
*/
class Front extends Controllers\Controller {
use Singleton;
const SITEMAP_TYPE_INDEX = 'index';
const SITEMAP_REWRITE_RULES_FLUSHED = 'wds-sitemap-rewrite-rules-flushed';
/**
* An array of Sitemap objects for handling different types of sitemaps.
*
* @var Sitemap[]
*/
private $sitemaps;
/**
* Constructor.
*
* Initializes the sitemaps array with News and General sitemaps.
*/
public function __construct() {
parent::__construct();
$this->sitemaps = array(
new \SmartCrawl\Sitemaps\News\Sitemap(),
new \SmartCrawl\Sitemaps\General\Sitemap(),
);
}
/**
* Initialize the class.
*
* @return bool True on success, false on failure.
*/
protected function init() {
add_action( 'init', array( $this, 'add_rewrites' ) );
add_action( 'wp', array( $this, 'serve_sitemaps' ), 999 );
add_action( 'wp_sitemaps_enabled', array( $this, 'maybe_disable_native_sitemap' ) );
return true;
}
/**
* Maybe disable the native sitemap.
*
* @param bool $is_enabled Whether the native sitemap is enabled.
*
* @return bool False if the native sitemap should be disabled, otherwise the original value.
*/
public function maybe_disable_native_sitemap( $is_enabled ) {
if ( Utils::override_native() ) {
return false;
}
return $is_enabled;
}
/**
* Add rewrite rules for the sitemaps.
*
* @return void
*/
public function add_rewrites() {
$this->add_styling_rewrites();
foreach ( $this->sitemaps as $sitemap ) {
$sitemap->add_rewrites();
}
$this->maybe_flush_rewrite_rules();
}
/**
* Serve the sitemaps.
*
* @return void
*/
public function serve_sitemaps() {
$this->maybe_serve_xsl_stylesheet();
foreach ( $this->sitemaps as $sitemap ) {
$this->serve_sitemap( $sitemap );
}
}
/**
* Serve a specific sitemap.
*
* @param Sitemap $sitemap The sitemap to serve.
*
* @return void
*/
private function serve_sitemap( $sitemap ) {
if ( $sitemap->can_handle_request() ) {
if ( $sitemap->is_enabled() ) {
$sitemap->serve();
} else {
$sitemap->do_fallback();
}
}
}
/**
* Maybe flush the rewrite rules.
*
* @return void
*/
protected function maybe_flush_rewrite_rules() {
$flushed = get_option( self::SITEMAP_REWRITE_RULES_FLUSHED, false );
if ( SMARTCRAWL_VERSION !== $flushed ) {
flush_rewrite_rules();
update_option( self::SITEMAP_REWRITE_RULES_FLUSHED, SMARTCRAWL_VERSION );
}
}
/**
* Add rewrite rules for the XSL styling.
*
* @return void
*/
private function add_styling_rewrites() {
global $wp;
$wp->add_query_var( 'wds_sitemap_styling' );
}
/**
* Maybe serve the XSL stylesheet.
*
* @return void
*/
private function maybe_serve_xsl_stylesheet() {
if ( $this->is_styling_request() ) {
$this->output_xsl();
}
}
/**
* Check if the request is for styling.
*
* @return string The query variable for styling.
*/
private function is_styling_request() {
return (string) get_query_var( 'wds_sitemap_styling' );
}
/**
* Output the XSL stylesheet.
*
* @return void
*/
private function output_xsl() {
if ( ! headers_sent() ) {
$whitelabel = \smartcrawl_get_array_value( $_GET, 'whitelabel' ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$template = \smartcrawl_get_array_value( $_GET, 'template' ); // phpcs:ignore WordPress.Security.NonceVerification.Recommended
$xsl = \SmartCrawl\Simple_Renderer::load(
'sitemap/sitemap-xsl',
array(
'whitelabel' => $whitelabel,
'template' => $template,
)
);
status_header( 200 );
header( 'Content-Type: text/xsl; charset=UTF-8' );
die( $xsl ); // phpcs:ignore WordPress.Security.EscapeOutput.OutputNotEscaped
}
}
}